/* $Id$
This file is part of the HandBrake source code.
- Homepage: <http://handbrake.m0k.org/>.
+ Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+
#include "hb.h"
#include "lang.h"
#include "a52dec/a52.h"
-
-#include <string.h>
+#include "libavcodec/avcodec.h"
+#include "libavformat/avformat.h"
#define min(a, b) a < b ? a : b
-typedef enum { hb_stream_type_unknown = 0, hb_stream_type_transport, hb_stream_type_program } hb_stream_type_t;
-
-#define kMaxNumberDecodeStreams 8
-#define kMaxNumberVideoPIDS 16
-#define kMaxNumberAudioPIDS 16
-//#define kVideoStream 0
-//#define kAudioStream 1
-#define kNumDecodeBuffers 2
+/*
+ * This table defines how ISO MPEG stream type codes map to HandBrake
+ * codecs. It is indexed by the 8 bit stream type and contains the codec
+ * worker object id and a parameter for that worker proc (ignored except
+ * for the ffmpeg-based codecs in which case it is the ffmpeg codec id).
+ *
+ * Entries with a worker proc id of 0 or a kind of 'U' indicate that HB
+ * doesn't handle the stream type.
+ */
+typedef struct {
+ enum { U, A, V } kind; /* unknown / audio / video */
+ int codec; /* HB worker object id of codec */
+ int codec_param; /* param for codec (usually ffmpeg codec id) */
+ const char* name; /* description of type */
+ int extra_hdr; /* needs a substream header added to PS pack */
+} stream2codec_t;
+
+#define st(id, kind, codec, codec_param, name) \
+ [id] = { kind, codec, codec_param, name, 0 }
+#define se(id, kind, codec, codec_param, name) \
+ [id] = { kind, codec, codec_param, name, 1 }
+
+static const stream2codec_t st2codec[256] = {
+ st(0x01, V, WORK_DECMPEG2, 0, "MPEG1"),
+ st(0x02, V, WORK_DECMPEG2, 0, "MPEG2"),
+ st(0x03, A, HB_ACODEC_MPGA, CODEC_ID_MP2, "MPEG1"),
+ st(0x04, A, HB_ACODEC_MPGA, CODEC_ID_MP2, "MPEG2"),
+ st(0x05, U, 0, 0, "ISO 13818-1 private section"),
+ st(0x06, U, 0, 0, "ISO 13818-1 PES private data"),
+ st(0x07, U, 0, 0, "ISO 13522 MHEG"),
+ st(0x08, U, 0, 0, "ISO 13818-1 DSM-CC"),
+ st(0x09, U, 0, 0, "ISO 13818-1 auxiliary"),
+ st(0x0a, U, 0, 0, "ISO 13818-6 encap"),
+ st(0x0b, U, 0, 0, "ISO 13818-6 DSM-CC U-N msgs"),
+ st(0x0c, U, 0, 0, "ISO 13818-6 Stream descriptors"),
+ st(0x0d, U, 0, 0, "ISO 13818-6 Sections"),
+ st(0x0e, U, 0, 0, "ISO 13818-1 auxiliary"),
+ st(0x0f, A, HB_ACODEC_MPGA, CODEC_ID_AAC, "ISO 13818-7 AAC Audio"),
+ st(0x10, V, WORK_DECAVCODECV, CODEC_ID_MPEG4, "MPEG4"),
+ st(0x11, A, HB_ACODEC_MPGA, CODEC_ID_AAC_LATM, "MPEG4 LATM AAC"),
+ st(0x12, U, 0, 0, "MPEG4 generic"),
+
+ st(0x14, U, 0, 0, "ISO 13818-6 DSM-CC download"),
+
+ st(0x1b, V, WORK_DECAVCODECV, CODEC_ID_H264, "H.264"),
+
+ //st(0x80, U, 0, 0, "DigiCipher II Video"),
+ se(0x81, A, HB_ACODEC_AC3, 0, "AC-3"),
+ se(0x82, A, HB_ACODEC_DCA, 0, "HDMV DTS"),
+ st(0x83, A, HB_ACODEC_LPCM, 0, "LPCM"),
+ st(0x84, A, 0, 0, "SDDS"),
+ st(0x85, U, 0, 0, "ATSC Program ID"),
+ st(0x86, U, 0, 0, "SCTE 35 splice info"),
+ st(0x87, A, 0, 0, "E-AC-3"),
+
+ se(0x8a, A, HB_ACODEC_DCA, 0, "DTS"),
+
+ se(0x91, A, HB_ACODEC_AC3, 0, "AC-3"),
+ st(0x92, U, 0, 0, "Subtitle"),
+
+ st(0x94, A, 0, 0, "SDDS"),
+ st(0xa0, V, 0, 0, "MSCODEC"),
+
+ st(0xea, V, WORK_DECAVCODECV, CODEC_ID_VC1, "VC1"),
+};
+#undef st
+
+typedef enum {
+ hb_stream_type_unknown = 0,
+ transport,
+ program,
+ dvd_program,
+ ffmpeg
+} hb_stream_type_t;
+
+#define kMaxNumberVideoPIDS 1
+#define kMaxNumberAudioPIDS 15
+#define kMaxNumberDecodeStreams (kMaxNumberVideoPIDS+kMaxNumberAudioPIDS)
#define kMaxNumberPMTStreams 32
-#define CLOCKRATE ((int64_t)27000000) // MPEG System clock rate
-#define STREAMRATE ((int64_t)2401587) // Original HD stream rate 19.2 Mbps
-#define DEMUX (((int)STREAMRATE * 8) / 50)// Demux value for HD content STREAMRATE / 50
struct hb_stream_s
{
- char * path;
- FILE * file_handle;
- hb_stream_type_t stream_type;
-
- int ps_current_write_buffer_index;
- int ps_current_read_buffer_index;
-
- struct {
- int size;
- int len;
- int read_pos;
- int write_pos;
- unsigned char * data;
- } ps_decode_buffer[kNumDecodeBuffers];
-
- struct {
- int lang_code;
- int flags;
- int rate;
- int bitrate;
- } a52_info[kMaxNumberAudioPIDS];
-
- int ts_video_pids[kMaxNumberVideoPIDS];
- int ts_audio_pids[kMaxNumberAudioPIDS];
-
- int ts_number_video_pids;
- int ts_number_audio_pids;
-
- unsigned char* ts_packetbuf[kMaxNumberDecodeStreams];
- int ts_packetpos[kMaxNumberDecodeStreams];
-// int ts_bufpackets[kMaxNumberDecodeStreams];
- int ts_foundfirst[kMaxNumberDecodeStreams];
- int ts_skipbad[kMaxNumberDecodeStreams];
- int ts_streamcont[kMaxNumberDecodeStreams];
- int ts_streamid[kMaxNumberDecodeStreams];
- int ts_audio_stream_type[kMaxNumberAudioPIDS];
-
- struct
- {
- unsigned short program_number;
- unsigned short program_map_PID;
- } pat_info[kMaxNumberPMTStreams];
- int ts_number_pat_entries;
+ int frames; /* video frames so far */
+ int errors; /* total errors so far */
+ int last_error_frame; /* frame # at last error message */
+ int last_error_count; /* # errors at last error message */
+ int packetsize; /* Transport Stream packet size */
+
+ int64_t ts_lastpcr; /* the last pcr we found in the TS stream */
+ int64_t ts_nextpcr; /* the next pcr to put in a PS packet */
+
+ uint8_t *ts_packet; /* buffer for one TS packet */
+ uint8_t *ts_buf[kMaxNumberDecodeStreams];
+ int ts_pos[kMaxNumberDecodeStreams];
+ int8_t ts_foundfirst[kMaxNumberDecodeStreams];
+ int8_t ts_skipbad[kMaxNumberDecodeStreams];
+ int8_t ts_streamcont[kMaxNumberDecodeStreams];
+ int8_t ts_start[kMaxNumberDecodeStreams];
+
+ uint8_t *fwrite_buf; /* PS buffer (set by hb_ts_stream_decode) */
+ uint8_t *fwrite_buf_orig; /* PS buffer start (set by hb_ts_stream_decode) */
+
+ uint8_t need_keyframe;
+
+ /*
+ * Stuff before this point is dynamic state updated as we read the
+ * stream. Stuff after this point is stream description state that
+ * we learn during the initial scan but cache so it can be
+ * reused during the conversion read.
+ */
+ uint8_t ts_number_video_pids;
+ uint8_t ts_number_audio_pids;
+
+ int16_t ts_video_pids[kMaxNumberVideoPIDS];
+ int16_t ts_audio_pids[kMaxNumberAudioPIDS];
+
+ uint8_t ts_streamid[kMaxNumberDecodeStreams];
+ uint8_t ts_stream_type[kMaxNumberDecodeStreams];
+ uint8_t ts_extra_hdr[kMaxNumberDecodeStreams];
+
+ char *path;
+ FILE *file_handle;
+ hb_stream_type_t hb_stream_type;
+ hb_title_t *title;
+
+ AVFormatContext *ffmpeg_ic;
+ AVPacket *ffmpeg_pkt;
+ double ffmpeg_tsconv[MAX_STREAMS];
+ uint8_t ffmpeg_video_id;
+
+ struct {
+ int lang_code;
+ int flags;
+ int rate;
+ int bitrate;
+ } a52_info[kMaxNumberAudioPIDS];
+
+ struct
+ {
+ unsigned short program_number;
+ unsigned short program_map_PID;
+ } pat_info[kMaxNumberPMTStreams];
+ int ts_number_pat_entries;
- struct
- {
- int reading;
- unsigned char *tablebuf;
- unsigned int tablepos;
- unsigned char current_continuity_counter;
-
- int section_length;
- int program_number;
- unsigned int PCR_PID;
- int program_info_length;
- unsigned char *progam_info_descriptor_data;
- struct
- {
- unsigned char stream_type;
- unsigned short elementary_PID;
- unsigned short ES_info_length;
- unsigned char *es_info_descriptor_data;
- } pmt_stream_info[kMaxNumberPMTStreams];
- } pmt_info;
+ struct
+ {
+ int reading;
+ unsigned char *tablebuf;
+ unsigned int tablepos;
+ unsigned char current_continuity_counter;
+
+ int section_length;
+ int program_number;
+ unsigned int PCR_PID;
+ int program_info_length;
+ unsigned char *progam_info_descriptor_data;
+ struct
+ {
+ unsigned char stream_type;
+ unsigned short elementary_PID;
+ unsigned short ES_info_length;
+ unsigned char *es_info_descriptor_data;
+ } pmt_stream_info[kMaxNumberPMTStreams];
+ } pmt_info;
};
/***********************************************************************
static void hb_stream_duration(hb_stream_t *stream, hb_title_t *inTitle);
static void hb_ts_stream_init(hb_stream_t *stream);
static void hb_ts_stream_find_pids(hb_stream_t *stream);
-static void hb_ts_stream_decode(hb_stream_t *stream);
+static int hb_ts_stream_decode(hb_stream_t *stream, uint8_t *obuf);
static void hb_ts_stream_reset(hb_stream_t *stream);
-static void hb_stream_put_back(hb_stream_t *stream, int i);
static hb_audio_t *hb_ts_stream_set_audio_id_and_codec(hb_stream_t *stream,
int aud_pid_index);
static void hb_ps_stream_find_audio_ids(hb_stream_t *stream, hb_title_t *title);
-static off_t align_to_next_packet(FILE* f);
+static off_t align_to_next_packet(hb_stream_t *stream);
+
+static int ffmpeg_open( hb_stream_t *stream, hb_title_t *title );
+static void ffmpeg_close( hb_stream_t *d );
+static hb_title_t *ffmpeg_title_scan( hb_stream_t *stream );
+static int ffmpeg_read( hb_stream_t *stream, hb_buffer_t *buf );
+static int ffmpeg_seek( hb_stream_t *stream, float frac );
/*
* streams have a bunch of state that's learned during the scan. We don't
* want to throw away the state when scan does a close then relearn
- * everything when reader does an open. So we basically ignore
- * a stream close, remember the most recent stream we've opened and only
- * delete it when a stream of a different name is opened.
+ * everything when reader does an open. So we save the stream state on
+ * the close following a scan and reuse it when 'reader' does an open.
+ */
+static hb_list_t *stream_state_list;
+
+static hb_stream_t *hb_stream_lookup( const char *path )
+{
+ if ( stream_state_list == NULL )
+ return NULL;
+
+ hb_stream_t *ss;
+ int i = 0;
+
+ while ( ( ss = hb_list_item( stream_state_list, i++ ) ) != NULL )
+ {
+ if ( strcmp( path, ss->path ) == 0 )
+ {
+ break;
+ }
+ }
+ return ss;
+}
+
+static void hb_stream_state_delete( hb_stream_t *ss )
+{
+ hb_list_rem( stream_state_list, ss );
+ free( ss->path );
+ free( ss );
+}
+
+/*
+ * logging routines.
+ * these frontend hb_log because transport streams can have a lot of errors
+ * so we want to rate limit messages. this routine limits the number of
+ * messages to at most one per minute of video. other errors that occur
+ * during the minute are counted & the count is output with the next
+ * error msg we print.
*/
-static hb_stream_t *current_stream;
+static void ts_warn_helper( hb_stream_t *stream, char *log, va_list args )
+{
+ // limit error printing to at most one per minute of video (at 30fps)
+ ++stream->errors;
+ if ( stream->frames - stream->last_error_frame >= 30*60 )
+ {
+ char msg[256];
+
+ vsnprintf( msg, sizeof(msg), log, args );
+
+ if ( stream->errors - stream->last_error_count < 10 )
+ {
+ hb_log( "stream: error near frame %d: %s", stream->frames, msg );
+ }
+ else
+ {
+ int Edelta = stream->errors - stream->last_error_count;
+ double Epcnt = (double)Edelta * 100. /
+ (stream->frames - stream->last_error_frame);
+ hb_log( "stream: %d new errors (%.0f%%) up to frame %d: %s",
+ Edelta, Epcnt, stream->frames, msg );
+ }
+ stream->last_error_frame = stream->frames;
+ stream->last_error_count = stream->errors;
+ }
+}
+
+static void ts_warn( hb_stream_t *stream, char *log, ... )
+{
+ va_list args;
+ va_start( args, log );
+ ts_warn_helper( stream, log, args );
+ va_end( args );
+}
+static void ts_err( hb_stream_t *stream, int curstream, char *log, ... )
+{
+ va_list args;
+ va_start( args, log );
+ ts_warn_helper( stream, log, args );
+ va_end( args );
+
+ stream->ts_skipbad[curstream] = 1;
+ stream->ts_pos[curstream] = 0;
+ stream->ts_streamcont[curstream] = -1;
+}
-static inline int check_ps_sync(const uint8_t *buf)
+static int check_ps_sync(const uint8_t *buf)
{
// a legal MPEG program stream must start with a Pack header in the
// first four bytes.
(buf[2] == 0x01) && (buf[3] == 0xba);
}
-static inline int check_ts_sync(const uint8_t *buf)
+static int check_ps_sys(const uint8_t *buf)
+{
+ // a legal MPEG program stream must start with a Pack followed by a
+ // SYS. If we've already verified the pack, this skips over it and checks
+ // for the sys header.
+ int pos = 14 + ( buf[13] & 0x7 ); // skip over the PACK
+ return (buf[pos+0] == 0x00) && (buf[pos+1] == 0x00) &&
+ (buf[pos+2] == 0x01) && (buf[pos+3] == 0xbb);
+}
+
+static int check_ts_sync(const uint8_t *buf)
{
// must have initial sync byte, no scrambling & a legal adaptation ctrl
return (buf[0] == 0x47) && ((buf[3] >> 6) == 0) && ((buf[3] >> 4) > 0);
}
-static inline int have_ts_sync(const uint8_t *buf)
+static int have_ts_sync(const uint8_t *buf, int psize)
{
- return check_ts_sync(&buf[0*188]) && check_ts_sync(&buf[1*188]) &&
- check_ts_sync(&buf[2*188]) && check_ts_sync(&buf[3*188]) &&
- check_ts_sync(&buf[4*188]) && check_ts_sync(&buf[5*188]) &&
- check_ts_sync(&buf[6*188]) && check_ts_sync(&buf[7*188]);
+ return check_ts_sync(&buf[0*psize]) && check_ts_sync(&buf[1*psize]) &&
+ check_ts_sync(&buf[2*psize]) && check_ts_sync(&buf[3*psize]) &&
+ check_ts_sync(&buf[4*psize]) && check_ts_sync(&buf[5*psize]) &&
+ check_ts_sync(&buf[6*psize]) && check_ts_sync(&buf[7*psize]);
}
static int hb_stream_check_for_ts(const uint8_t *buf)
{
// transport streams should have a sync byte every 188 bytes.
- // search the first KB of buf looking for at least 8 consecutive
+ // search the first 8KB of buf looking for at least 8 consecutive
// correctly located sync patterns.
int offset = 0;
- for ( offset = 0; offset < 1024; ++offset )
+ for ( offset = 0; offset < 8*1024-8*188; ++offset )
{
- if ( have_ts_sync( &buf[offset]) )
- return 1;
+ if ( have_ts_sync( &buf[offset], 188) )
+ return 188 | (offset << 8);
+ if ( have_ts_sync( &buf[offset], 192) )
+ return 192 | (offset << 8);
+ if ( have_ts_sync( &buf[offset], 204) )
+ return 204 | (offset << 8);
+ if ( have_ts_sync( &buf[offset], 208) )
+ return 208 | (offset << 8);
}
return 0;
}
static int hb_stream_check_for_ps(const uint8_t *buf)
{
- // program streams should have a Pack header every 2048 bytes.
- // check that we have 4 of these.
+ // program streams should start with a PACK then a SYS header.
+ return check_ps_sync(buf) && check_ps_sys(buf);
+}
+
+static int hb_stream_check_for_dvd_ps(const uint8_t *buf)
+{
+ // DVD program streams should have a Pack header every 2048 bytes.
+ // check that we have 4 of these in a row.
return check_ps_sync(&buf[0*2048]) && check_ps_sync(&buf[1*2048]) &&
check_ps_sync(&buf[2*2048]) && check_ps_sync(&buf[3*2048]);
}
if ( fread(buf, 1, sizeof(buf), stream->file_handle) == sizeof(buf) )
{
- if ( hb_stream_check_for_ts(buf) != 0 )
+ int psize;
+ if ( ( psize = hb_stream_check_for_ts(buf) ) != 0 )
{
- hb_log("file is MPEG Transport Stream");
- stream->stream_type = hb_stream_type_transport;
+ int offset = psize >> 8;
+ psize &= 0xff;
+ hb_log("file is MPEG Transport Stream with %d byte packets"
+ " offset %d bytes", psize, offset);
+ stream->packetsize = psize;
+ stream->hb_stream_type = transport;
hb_ts_stream_init(stream);
+ if ( !stream->ts_number_video_pids || !stream->ts_number_audio_pids )
+ {
+ return 0;
+ }
+ return 1;
+ }
+ if ( hb_stream_check_for_dvd_ps(buf) != 0 )
+ {
+ hb_log("file is MPEG DVD Program Stream");
+ stream->hb_stream_type = dvd_program;
return 1;
}
if ( hb_stream_check_for_ps(buf) != 0 )
{
hb_log("file is MPEG Program Stream");
- stream->stream_type = hb_stream_type_program;
+ stream->hb_stream_type = program;
return 1;
}
}
return 0;
}
-static void hb_stream_delete( hb_stream_t ** _d )
+static void hb_stream_delete_dynamic( hb_stream_t *d )
{
- hb_stream_t * d = *_d;
-
if( d->file_handle )
{
fclose( d->file_handle );
}
int i=0;
- for (i = 0; i < kNumDecodeBuffers; i++)
- {
- if (d->ps_decode_buffer[i].data)
- {
- free(d->ps_decode_buffer[i].data);
- d->ps_decode_buffer[i].data = NULL;
- }
- }
+ if ( d->ts_packet )
+ {
+ free( d->ts_packet );
+ d->ts_packet = NULL;
+ }
for (i = 0; i < kMaxNumberDecodeStreams; i++)
{
- if (d->ts_packetbuf[i])
+ if (d->ts_buf[i])
{
- free(d->ts_packetbuf[i]);
- d->ts_packetbuf[i] = NULL;
+ free(d->ts_buf[i]);
+ d->ts_buf[i] = NULL;
}
}
+}
+
+static void hb_stream_delete( hb_stream_t *d )
+{
+ hb_stream_delete_dynamic( d );
free( d->path );
free( d );
- *_d = NULL;
}
/***********************************************************************
***********************************************************************
*
**********************************************************************/
-hb_stream_t * hb_stream_open( char * path )
+hb_stream_t * hb_stream_open( char *path, hb_title_t *title )
{
- if (current_stream)
+ FILE *f = fopen( path, "r" );
+ if ( f == NULL )
{
- if (strcmp( path, current_stream->path ) == 0 )
- {
- hb_stream_seek( current_stream, 0. );
- return current_stream;
- }
- hb_stream_delete( ¤t_stream );
+ hb_log( "hb_stream_open: open %s failed", path );
+ return NULL;
}
+
hb_stream_t *d = calloc( sizeof( hb_stream_t ), 1 );
+ if ( d == NULL )
+ {
+ fclose( f );
+ hb_log( "hb_stream_open: can't allocate space for %s stream state", path );
+ return NULL;
+ }
- /* open the file and see if it's a type we know about. return a stream
- * reference structure if we can deal with it & NULL otherwise. */
- if( ( d->file_handle = fopen( path, "rb" ) ) )
+ /*
+ * if we're opening the stream to read & convert, we need
+ * the state we saved when we scanned the stream. if we're
+ * opening the stream to scan it we want to rebuild the state
+ * (even if we have saved state, the stream may have changed).
+ */
+ hb_stream_t *ss = hb_stream_lookup( path );
+ if ( title && ss && ss->hb_stream_type != ffmpeg )
{
+ /*
+ * copy the saved state since we might be encoding the same stream
+ * multiple times.
+ */
+ memcpy( d, ss, sizeof(*d) );
+ d->file_handle = f;
+ d->title = title;
d->path = strdup( path );
- if (d->path != NULL && hb_stream_get_type( d ) != 0 )
+
+ if ( d->hb_stream_type == transport )
+ {
+ d->ts_packet = malloc( d->packetsize );
+
+ int i = 0;
+ for ( ; i < d->ts_number_video_pids + d->ts_number_audio_pids; i++)
+ {
+ d->ts_buf[i] = malloc( HB_DVD_READ_BUFFER_SIZE );
+ }
+ hb_stream_seek( d, 0. );
+
+ if ( d->packetsize == 188 )
+ {
+ // Assume that an over-the-air transport stream can lose PCR
+ // packets and try to filter out the timing inconsistencies.
+ title->flaky_clock = 1;
+ }
+ }
+ return d;
+ }
+
+ /*
+ * opening for scan - delete any saved state then (re)scan the stream.
+ * If it's something we can deal with (MPEG2 PS or TS) return a stream
+ * reference structure & null otherwise.
+ */
+ if ( ss != NULL )
+ {
+ hb_stream_state_delete( ss );
+ }
+ d->file_handle = f;
+ d->title = title;
+ d->path = strdup( path );
+ if (d->path != NULL )
+ {
+ if ( hb_stream_get_type( d ) != 0 )
+ {
+ return d;
+ }
+ fclose( d->file_handle );
+ d->file_handle = NULL;
+ if ( ffmpeg_open( d, title ) )
{
- current_stream = d;
return d;
}
+ }
+ if ( d->file_handle )
+ {
fclose( d->file_handle );
- if (d->path)
- free( d->path );
+ }
+ if (d->path)
+ {
+ free( d->path );
}
hb_log( "hb_stream_open: open %s failed", path );
free( d );
**********************************************************************/
void hb_stream_close( hb_stream_t ** _d )
{
+ hb_stream_t *stream = * _d;
+
+ if ( stream->hb_stream_type == ffmpeg )
+ {
+ ffmpeg_close( stream );
+ hb_stream_delete( stream );
+ *_d = NULL;
+ return;
+ }
+
+ if ( stream->frames )
+ {
+ hb_log( "stream: %d good frames, %d errors (%.0f%%)", stream->frames,
+ stream->errors, (double)stream->errors * 100. /
+ (double)stream->frames );
+ }
+
+ /*
+ * if the stream was opened for a scan, cache the result, otherwise delete
+ * the state.
+ */
+ if ( stream->title == NULL )
+ {
+ hb_stream_delete_dynamic( stream );
+ if ( stream_state_list == NULL )
+ {
+ stream_state_list = hb_list_init();
+ }
+ hb_list_add( stream_state_list, stream );
+ }
+ else
+ {
+ hb_stream_delete( stream );
+ }
+ *_d = NULL;
}
/* when the file was first opened we made entries for all the audio elementary
for (i = indx+1; i < stream->ts_number_audio_pids; ++i)
{
stream->ts_audio_pids[indx] = stream->ts_audio_pids[i];
- stream->ts_audio_stream_type[indx] = stream->ts_audio_stream_type[i];
- stream->ts_streamid[stream->ts_number_video_pids + indx] =
- stream->ts_streamid[stream->ts_number_video_pids + i];
+ stream->ts_stream_type[1 + indx] = stream->ts_stream_type[1+i];
+ stream->ts_extra_hdr[1 + indx] = stream->ts_extra_hdr[1+i];
+ stream->ts_streamid[1 + indx] = stream->ts_streamid[1 + i];
++indx;
}
--stream->ts_number_audio_pids;
}
+static int index_of_pid(int pid, hb_stream_t *stream)
+{
+ int i;
+
+ if ( pid == stream->ts_video_pids[0] )
+ return 0;
+
+ for ( i = 0; i < stream->ts_number_audio_pids; ++i )
+ if ( pid == stream->ts_audio_pids[i] )
+ return i + 1;
+
+ return -1;
+}
+
/***********************************************************************
* hb_ps_stream_title_scan
***********************************************************************
**********************************************************************/
hb_title_t * hb_stream_title_scan(hb_stream_t *stream)
{
+ if ( stream->hb_stream_type == ffmpeg )
+ return ffmpeg_title_scan( stream );
+
// 'Barebones Title'
hb_title_t *aTitle = hb_title_init( stream->path, 0 );
aTitle->index = 1;
// the elementary stream is an audio type.
// - For program streams read the first 4MB and take every unique
// audio stream we find.
- if (stream->stream_type == hb_stream_type_transport)
+ if (stream->hb_stream_type == transport)
{
int i;
for (i=0; i < stream->ts_number_audio_pids; i++)
{
hb_audio_t *audio = hb_ts_stream_set_audio_id_and_codec(stream, i);
- if (audio->codec)
+ if (audio->config.in.codec)
hb_list_add( aTitle->list_audio, audio );
else
{
--i;
}
}
+
+ // add the PCR PID if we don't already have it
+ if ( index_of_pid( stream->pmt_info.PCR_PID, stream ) < 0 )
+ {
+ stream->ts_audio_pids[stream->ts_number_audio_pids++] =
+ stream->pmt_info.PCR_PID;
+ }
+
+ // set up the video codec to use for this title
+ aTitle->video_codec = st2codec[stream->ts_stream_type[0]].codec;
+ aTitle->video_codec_param = st2codec[stream->ts_stream_type[0]].codec_param;
}
else
{
}
/*
+ * read the next transport stream packet from 'stream'. Return NULL if
+ * we hit eof & a pointer to the sync byte otherwise.
+ */
+static const uint8_t *next_packet( hb_stream_t *stream )
+{
+ uint8_t *buf = stream->ts_packet + stream->packetsize - 188;
+
+ while ( 1 )
+ {
+ if ( fread(stream->ts_packet, 1, stream->packetsize, stream->file_handle) !=
+ stream->packetsize )
+ {
+ return NULL;
+ }
+ if (buf[0] == 0x47)
+ {
+ return buf;
+ }
+ // lost sync - back up to where we started then try to re-establish.
+ off_t pos = ftello(stream->file_handle) - stream->packetsize;
+ off_t pos2 = align_to_next_packet(stream);
+ if ( pos2 == 0 )
+ {
+ hb_log( "next_packet: eof while re-establishing sync @ %lld", pos );
+ return NULL;
+ }
+ ts_warn( stream, "next_packet: sync lost @ %lld, regained after %lld bytes",
+ pos, pos2 );
+ }
+}
+
+/*
+ * skip to the start of the next PACK header in program stream src_stream.
+ */
+static void skip_to_next_pack( hb_stream_t *src_stream )
+{
+ // scan forward until we find the start of the next pack
+ uint32_t strt_code = -1;
+ int c;
+
+ flockfile( src_stream->file_handle );
+ while ( ( c = getc_unlocked( src_stream->file_handle ) ) != EOF )
+ {
+ strt_code = ( strt_code << 8 ) | c;
+ if ( strt_code == 0x000001ba )
+ // we found the start of the next pack
+ break;
+ }
+ funlockfile( src_stream->file_handle );
+
+ // if we didn't terminate on an eof back up so the next read
+ // starts on the pack boundary.
+ if ( c != EOF )
+ {
+ fseeko( src_stream->file_handle, -4, SEEK_CUR );
+ }
+}
+
+/*
* scan the next MB of 'stream' to find the next start packet for
* the Packetized Elementary Stream associated with TS PID 'pid'.
*/
static const uint8_t *hb_ts_stream_getPEStype(hb_stream_t *stream, uint32_t pid)
{
- static uint8_t buf[188];
- int npack = 100000; // max packets to read
+ int npack = 300000; // max packets to read
while (--npack >= 0)
{
- if (fread(buf, 1, 188, stream->file_handle) != 188)
+ const uint8_t *buf = next_packet( stream );
+ if ( buf == NULL )
{
hb_log("hb_ts_stream_getPEStype: EOF while searching for PID 0x%x", pid);
return 0;
}
- if (buf[0] != 0x47)
- {
- hb_log("hb_ts_stream_getPEStype: lost sync while searching for PID 0x%x", pid);
- align_to_next_packet(stream->file_handle);
- continue;
- }
/*
* The PES header is only in TS packets with 'start' set so we check
udata += buf[4] + 1;
break;
}
- return &buf[udata];
+ /* PES hdr has to begin with an mpeg start code */
+ if (buf[udata+0] == 0x00 && buf[udata+1] == 0x00 && buf[udata+2] == 0x01)
+ {
+ return &buf[udata];
+ }
}
/* didn't find it */
hb_buffer_t *es;
// 'buf' contains an MPEG2 PACK - get a list of all it's elementary streams
- hb_demux_ps(buf, list);
+ hb_demux_ps( buf, list, 0 );
while ( ( es = hb_list_item( list, 0 ) ) )
{
{
struct pts_pos pp = { 0, 0 };
- if ( stream->stream_type == hb_stream_type_program )
- {
- // round address down to nearest dvd sector start
- fpos &=~ ( HB_DVD_READ_BUFFER_SIZE - 1 );
- fseeko( stream->file_handle, fpos, SEEK_SET );
- pp.pts = hb_ps_stream_getVideoPTS( stream );
- }
- else
+ if ( stream->hb_stream_type == transport )
{
const uint8_t *buf;
fseeko( stream->file_handle, fpos, SEEK_SET );
- align_to_next_packet( stream->file_handle );
+ align_to_next_packet( stream );
buf = hb_ts_stream_getPEStype( stream, stream->ts_video_pids[0] );
if ( buf == NULL )
{
( (uint64_t)buf[12] << 7 ) |
( (uint64_t)buf[13] >> 1 );
}
+ else
+ {
+ // round address down to nearest dvd sector start
+ fpos &=~ ( HB_DVD_READ_BUFFER_SIZE - 1 );
+ fseeko( stream->file_handle, fpos, SEEK_SET );
+ if ( stream->hb_stream_type == program )
+ {
+ skip_to_next_pack( stream );
+ }
+ pp.pts = hb_ps_stream_getVideoPTS( stream );
+ }
pp.pos = ftello(stream->file_handle);
- hb_log("hb_sample_pts: pts %lld at %llu", pp.pts, pp.pos );
return pp;
}
for ( i = 0; i < n-1; ++i )
{
// Bias the median filter by not including pairs that are "far"
- // frome one another. This is to handle cases where the file is
+ // from one another. This is to handle cases where the file is
// made of roughly equal size pieces where a symmetric choice of
// pairs results in having the same number of intra-piece &
// inter-piece rate estimates. This would mean that the median
**********************************************************************/
int hb_stream_read( hb_stream_t * src_stream, hb_buffer_t * b )
{
- if (src_stream->stream_type == hb_stream_type_program)
- {
- size_t amt_read;
- amt_read = fread(b->data, HB_DVD_READ_BUFFER_SIZE, 1, src_stream->file_handle);
- if (amt_read > 0)
- return 1;
- else
- return 0;
- }
- else if (src_stream->stream_type == hb_stream_type_transport)
- {
- int read_buffer_index = src_stream->ps_current_read_buffer_index;
-
- // Transport streams are a little more complex - we might be able to just
- // read from the transport stream conversion buffer (if there's enough data)
- // or we may need to transfer what's left and fill it again.
- if (src_stream->ps_decode_buffer[read_buffer_index].len
- - src_stream->ps_decode_buffer[read_buffer_index].read_pos
- >= HB_DVD_READ_BUFFER_SIZE)
- {
- memcpy(b->data,
- src_stream->ps_decode_buffer[read_buffer_index].data +
- src_stream->ps_decode_buffer[read_buffer_index].read_pos,
- HB_DVD_READ_BUFFER_SIZE);
- src_stream->ps_decode_buffer[read_buffer_index].read_pos += HB_DVD_READ_BUFFER_SIZE;
- return 1;
- }
- else
- {
- // Not quite enough data in the buffer - transfer what is present, fill the buffer and then
- // transfer what's still needed.
- int transfer_size = HB_DVD_READ_BUFFER_SIZE;
- int amt_avail_to_transfer = src_stream->ps_decode_buffer[read_buffer_index].len - src_stream->ps_decode_buffer[read_buffer_index].read_pos;
- memcpy(b->data, src_stream->ps_decode_buffer[read_buffer_index].data + src_stream->ps_decode_buffer[read_buffer_index].read_pos, amt_avail_to_transfer);
- transfer_size -= amt_avail_to_transfer;
-
- // Give up this buffer - decoding may well need it, and we're done
- src_stream->ps_decode_buffer[read_buffer_index].read_pos = 0;
- src_stream->ps_decode_buffer[read_buffer_index].write_pos = 0;
- src_stream->ps_decode_buffer[read_buffer_index].len = 0;
-
- // Fill the buffer
- hb_ts_stream_decode(src_stream);
-
- // Decoding will almost certainly have changed the current read buffer index
- read_buffer_index = src_stream->ps_current_read_buffer_index;
+ if ( src_stream->hb_stream_type == ffmpeg )
+ {
+ return ffmpeg_read( src_stream, b );
+ }
+ if ( src_stream->hb_stream_type == dvd_program )
+ {
+ size_t amt_read = fread(b->data, HB_DVD_READ_BUFFER_SIZE, 1,
+ src_stream->file_handle);
+ return (amt_read > 0);
+ }
+ if ( src_stream->hb_stream_type == program )
+ {
+ // a general program stream has arbitrary sized pack's. we're
+ // currently positioned at the start of a pack so read up to but
+ // not including the start of the next, expanding the buffer
+ // as necessary.
+ uint8_t *cp = b->data;
+ uint8_t *ep = cp + b->alloc;
+ uint32_t strt_code = -1;
+ int c;
+
+ // consume the first byte of the initial pack so we don't match on
+ // it in the loop below.
+ if ( ( c = getc( src_stream->file_handle ) ) == EOF )
+ return 0;
- if (src_stream->ps_decode_buffer[read_buffer_index].len == 0)
- {
- hb_log("hb_stream_read - buffer after decode has zero length data");
- return 0;
- }
+ *cp++ = c;
- // Read the bit we still need
- memcpy(b->data+amt_avail_to_transfer, src_stream->ps_decode_buffer[read_buffer_index].data + src_stream->ps_decode_buffer[read_buffer_index].read_pos,transfer_size);
- src_stream->ps_decode_buffer[read_buffer_index].read_pos += transfer_size;
+ flockfile( src_stream->file_handle );
+ while ( ( c = getc_unlocked( src_stream->file_handle ) ) != EOF )
+ {
+ strt_code = ( strt_code << 8 ) | c;
+ if ( strt_code == 0x000001ba )
+ // we found the start of the next pack
+ break;
+ if ( cp >= ep )
+ {
+ // need to expand the buffer
+ int curSize = cp - b->data;
+ hb_buffer_realloc( b, curSize * 2 );
+ cp = b->data + curSize;
+ ep = b->data + b->alloc;
+ }
+ *cp++ = c;
+ }
+ funlockfile( src_stream->file_handle );
- return 1;
- }
- }
- else
- return 0;
+ // if we didn't terminate on an eof back up so the next read
+ // starts on the pack boundary.
+ b->size = cp - b->data;
+ if ( c != EOF )
+ {
+ fseeko( src_stream->file_handle, -4, SEEK_CUR );
+ b->size -= 4;
+ }
+ return 1;
+ }
+ return hb_ts_stream_decode( src_stream, b->data );
}
/***********************************************************************
**********************************************************************/
int hb_stream_seek( hb_stream_t * src_stream, float f )
{
- off_t stream_size, cur_pos, new_pos;
- double pos_ratio = f;
- cur_pos = ftello(src_stream->file_handle);
- fseeko(src_stream->file_handle,0 ,SEEK_END);
- stream_size = ftello(src_stream->file_handle);
- new_pos = (off_t) ((double) (stream_size) * pos_ratio);
- new_pos &=~ (HB_DVD_READ_BUFFER_SIZE - 1);
- int r = fseeko(src_stream->file_handle, new_pos, SEEK_SET);
-
- if (r == -1)
- {
- fseeko(src_stream->file_handle, cur_pos, SEEK_SET);
- return 0;
- }
-
- if (src_stream->stream_type == hb_stream_type_transport)
- {
- // We need to drop the current decoder output and move
- // forwards to the next transport stream packet.
- hb_ts_stream_reset(src_stream);
- }
-
- // Now we must scan forwards for a valid start code (0x000001BA)
- int done = 0;
- hb_buffer_t *buf = hb_buffer_init(HB_DVD_READ_BUFFER_SIZE);
- while (!done)
- {
- if (hb_stream_read(src_stream,buf) == 1)
- {
- int i=0;
- for (i=0; (i <= HB_DVD_READ_BUFFER_SIZE-4) && (!done); i++)
- {
- if ((buf->data[i] == 0x00) && (buf->data[i+1] == 0x00) && (buf->data[i+2] == 0x01) && (buf->data[i+3] == 0xba))
+ if ( src_stream->hb_stream_type == ffmpeg )
+ {
+ return ffmpeg_seek( src_stream, f );
+ }
+ off_t stream_size, cur_pos, new_pos;
+ double pos_ratio = f;
+ cur_pos = ftello( src_stream->file_handle );
+ fseeko( src_stream->file_handle, 0, SEEK_END );
+ stream_size = ftello( src_stream->file_handle );
+ new_pos = (off_t) ((double) (stream_size) * pos_ratio);
+ new_pos &=~ (HB_DVD_READ_BUFFER_SIZE - 1);
+
+ int r = fseeko( src_stream->file_handle, new_pos, SEEK_SET );
+ if (r == -1)
+ {
+ fseeko( src_stream->file_handle, cur_pos, SEEK_SET );
+ return 0;
+ }
+
+ if ( src_stream->hb_stream_type == transport )
+ {
+ // We need to drop the current decoder output and move
+ // forwards to the next transport stream packet.
+ hb_ts_stream_reset(src_stream);
+ src_stream->need_keyframe = ( f != 0 );
+ }
+ else if ( src_stream->hb_stream_type == program )
+ {
+ skip_to_next_pack( src_stream );
+ }
+
+ return 1;
+}
+
+static const char* make_upper( const char* s )
+{
+ static char name[8];
+ char *cp = name;
+ char *ep = cp + sizeof(name)-1;
+
+ while ( *s && cp < ep )
+ {
+ *cp++ = islower(*s)? toupper(*s) : *s;
+ ++s;
+ }
+ *cp = 0;
+ return name;
+}
+
+static void set_audio_description( hb_audio_t *audio, iso639_lang_t *lang )
+{
+ /* XXX
+ * This is a duplicate of code in dvd.c - it should get factored out
+ * into a common routine. We probably should only be putting the lang
+ * code or a lang pointer into the audio config & let the common description
+ * formatting routine in scan.c do all the stuff below.
+ */
+ const char *codec_name;
+ AVCodecContext *cc;
+
+ if ( audio->config.in.codec == HB_ACODEC_FFMPEG &&
+ ( cc = hb_ffmpeg_context( audio->config.in.codec_param ) ) &&
+ avcodec_find_decoder( cc->codec_id ) )
+ {
+ codec_name = make_upper( avcodec_find_decoder( cc->codec_id )->name );
+ if ( !strcmp( codec_name, "LIBFAAD" ) )
{
- done = 1;
- // 'Put Back' the data we've just read (up to this point)
- hb_stream_put_back(src_stream, i);
+ codec_name = "AAC";
}
- }
+ }
+ else if ( audio->config.in.codec == HB_ACODEC_MPGA &&
+ avcodec_find_decoder( audio->config.in.codec_param ) )
+ {
+ codec_name = avcodec_find_decoder( audio->config.in.codec_param )->name;
}
else
- done = 1; // End of data;
- }
- hb_buffer_close(&buf);
- return 1;
+ {
+ codec_name = audio->config.in.codec == HB_ACODEC_AC3 ? "AC3" :
+ audio->config.in.codec == HB_ACODEC_DCA ? "DTS" :
+ audio->config.in.codec == HB_ACODEC_MPGA ? "MPEG" :
+ audio->config.in.codec == HB_ACODEC_LPCM ? "LPCM" :
+ audio->config.in.codec == HB_ACODEC_FFMPEG ? "FFMPEG" :
+ "Unknown";
+ }
+ snprintf( audio->config.lang.description,
+ sizeof( audio->config.lang.description ), "%s (%s)",
+ strlen(lang->native_name) ? lang->native_name : lang->eng_name,
+ codec_name );
+ snprintf( audio->config.lang.simple, sizeof( audio->config.lang.simple ), "%s",
+ strlen(lang->native_name) ? lang->native_name : lang->eng_name );
+ snprintf( audio->config.lang.iso639_2, sizeof( audio->config.lang.iso639_2 ),
+ "%s", lang->iso639_2);
}
static hb_audio_t *hb_ts_stream_set_audio_id_and_codec(hb_stream_t *stream,
const uint8_t *buf;
fseeko(stream->file_handle, 0, SEEK_SET);
- align_to_next_packet(stream->file_handle);
+ align_to_next_packet(stream);
buf = hb_ts_stream_getPEStype(stream, stream->ts_audio_pids[aud_pid_index]);
/* check that we found a PES header */
+ uint8_t stype = 0;
if (buf && buf[0] == 0x00 && buf[1] == 0x00 && buf[2] == 0x01)
{
- if (buf[3] == 0xbd)
+ // 0xbd is the normal container for AC3/DCA/PCM/etc. 0xfd indicates an
+ // extended stream id (ISO 13818-1(2007)). If we cared about the
+ // real id we'd have to look inside the PES extension to find it.
+ // But since we remap stream id's when we generate PS packets from
+ // the TS packets we can just ignore the actual id.
+ if ( buf[3] == 0xbd || buf[3] == 0xfd )
{
audio->id = 0x80bd | (aud_pid_index << 8);
- audio->codec = HB_ACODEC_AC3;
- hb_log("transport stream pid 0x%x (type 0x%x) is AC-3 audio id 0x%x",
- stream->ts_audio_pids[aud_pid_index],
- stream->ts_audio_stream_type[aud_pid_index],
- audio->id);
- stream->ts_audio_stream_type[aud_pid_index] = 0x81;
- stream->ts_streamid[stream->ts_number_video_pids + aud_pid_index] = buf[3];
+ stype = stream->ts_stream_type[1 + aud_pid_index];
+ if ( st2codec[stype].kind == U )
+ {
+ // XXX assume unknown stream types are AC-3 (if they're not
+ // audio we'll find that out during the scan but if they're
+ // some other type of audio we'll end up ignoring them).
+ stype = 0x81;
+ stream->ts_stream_type[1 + aud_pid_index] = 0x81;
+ }
+ stream->ts_streamid[1 + aud_pid_index] = 0xbd;
}
else if ((buf[3] & 0xe0) == 0xc0)
{
- audio->id = buf[3] | aud_pid_index;
- audio->codec = HB_ACODEC_MPGA;
- hb_log("transport stream pid 0x%x (type 0x%x) is MPEG audio id 0x%x",
- stream->ts_audio_pids[aud_pid_index],
- stream->ts_audio_stream_type[aud_pid_index],
- audio->id);
- stream->ts_audio_stream_type[aud_pid_index] = 0x03;
- stream->ts_streamid[stream->ts_number_video_pids + aud_pid_index] = buf[3];
+ audio->id = 0xc0 | aud_pid_index;
+ stype = stream->ts_stream_type[1 + aud_pid_index];
+ if ( st2codec[stype].kind == U )
+ {
+ // XXX assume unknown stream types are MPEG audio
+ stype = 0x03;
+ stream->ts_stream_type[1 + aud_pid_index] = 0x03;
+ }
}
}
- fseeko(stream->file_handle, cur_pos, SEEK_SET);
- if (! audio->codec)
+ // if we found an audio stream type & HB has a codec that can decode it
+ // finish configuring the audio so we'll add it to the title's list.
+ if ( st2codec[stype].kind == A && st2codec[stype].codec )
+ {
+ stream->ts_streamid[1 + aud_pid_index] = audio->id;
+ stream->ts_extra_hdr[1 + aud_pid_index] = st2codec[stype].extra_hdr;
+ audio->config.in.codec = st2codec[stype].codec;
+ audio->config.in.codec_param = st2codec[stype].codec_param;
+ set_audio_description( audio,
+ lang_for_code( stream->a52_info[aud_pid_index].lang_code ) );
+ hb_log("transport stream pid 0x%x (type 0x%x) is %s audio id 0x%x",
+ stream->ts_audio_pids[aud_pid_index],
+ stype, st2codec[stype].name, audio->id);
+ }
+ else
{
- hb_log("transport stream pid 0x%x (type 0x%x) isn't audio",
- stream->ts_audio_pids[aud_pid_index],
- stream->ts_audio_stream_type[aud_pid_index]);
+ if ( buf )
+ {
+ hb_log("transport stream pid 0x%x (type 0x%x, substream 0x%x) "
+ "isn't audio", stream->ts_audio_pids[aud_pid_index],
+ stream->ts_stream_type[1 + aud_pid_index], buf[3]);
+ }
+ else
+ {
+ hb_log("transport stream pid 0x%x (type 0x%x) isn't audio",
+ stream->ts_audio_pids[aud_pid_index],
+ stream->ts_stream_type[1 + aud_pid_index]);
+ }
}
+ fseeko(stream->file_handle, cur_pos, SEEK_SET);
return audio;
}
switch ( id >> 12 )
{
case 0x0:
- audio->codec = HB_ACODEC_MPGA;
+ audio->config.in.codec = HB_ACODEC_MPGA;
hb_log("add_audio_to_title: added MPEG audio stream 0x%x", id);
break;
case 0x2:
free( audio );
return;
case 0x8:
- audio->codec = HB_ACODEC_AC3;
+ audio->config.in.codec = HB_ACODEC_AC3;
hb_log("add_audio_to_title: added AC3 audio stream 0x%x", id);
break;
case 0xa:
- audio->codec = HB_ACODEC_LPCM;
+ audio->config.in.codec = HB_ACODEC_LPCM;
hb_log("add_audio_to_title: added LPCM audio stream 0x%x", id);
break;
default:
return;
}
+ set_audio_description( audio, lang_for_code( 0 ) );
hb_list_add( title->list_audio, audio );
}
hb_buffer_t *es;
// 'buf' contains an MPEG2 PACK - get a list of all it's elementary streams
- hb_demux_ps(buf, list);
+ hb_demux_ps( buf, list, 0 );
while ( ( es = hb_list_item( list, 0 ) ) )
{
}
/***********************************************************************
- * hb_stream_update_audio
+ * hb_ts_stream_init
***********************************************************************
*
**********************************************************************/
-void hb_stream_update_audio(hb_stream_t *stream, hb_audio_t *audio)
+
+static void hb_ts_stream_init(hb_stream_t *stream)
{
- iso639_lang_t *lang;
+ int i;
- if (stream->stream_type == hb_stream_type_transport)
+ for (i=0; i < kMaxNumberDecodeStreams; i++)
{
- // Find the audio stream info for this PID. The stream index is
- // the subchannel id which is in the bottom four bits for MPEG audio
- // and the bottom four bits of the upper byte for everything else.
- int i = ( audio->id >= 0xd0 ? audio->id >> 8 : audio->id ) & 0xf;
- if (i >= stream->ts_number_audio_pids)
- {
- hb_log("hb_stream_update_audio: no PID for audio stream 0x%x",
- audio->id);
- return;
- }
- if (audio->id < 0xd0)
- {
- /* XXX fake mpeg audio sample rate & bps */
- stream->a52_info[i].flags = A52_STEREO;
- stream->a52_info[i].rate = 48000 /*Hz*/;
- stream->a52_info[i].bitrate = 384000 /*Bps*/;
- }
-
- lang = lang_for_code(stream->a52_info[i].lang_code);
- if (!audio->rate)
- audio->rate = stream->a52_info[i].rate;
- if (!audio->bitrate)
- audio->bitrate = stream->a52_info[i].bitrate;
- if (!audio->config.a52.ac3flags)
- audio->config.a52.ac3flags = audio->ac3flags = stream->a52_info[i].flags;
-
+ stream->ts_streamcont[i] = -1;
}
- else
+ stream->ts_video_pids[0] = -1;
+ for ( i = 0; i < stream->ts_number_audio_pids; i++ )
{
- // XXX should try to get language code from the AC3 bitstream
- lang = lang_for_code(0x0000);
+ stream-> ts_audio_pids[i] = -1;
}
- if (!audio->input_channel_layout)
+ stream->ts_packet = malloc( stream->packetsize );
+
+ // Find the audio and video pids in the stream
+ hb_ts_stream_find_pids(stream);
+
+ for (i = 0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
{
- switch( audio->ac3flags & A52_CHANNEL_MASK )
- {
- /* mono sources */
- case A52_MONO:
- case A52_CHANNEL1:
- case A52_CHANNEL2:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_MONO;
- break;
- /* stereo input */
- case A52_CHANNEL:
- case A52_STEREO:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_STEREO;
- break;
- /* dolby (DPL1 aka Dolby Surround = 4.0 matrix-encoded) input */
- case A52_DOLBY:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_DOLBY;
- break;
- /* 3F/2R input */
- case A52_3F2R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_3F2R;
- break;
- /* 3F/1R input */
- case A52_3F1R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_3F1R;
- break;
- /* other inputs */
- case A52_3F:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_3F;
- break;
- case A52_2F1R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_2F1R;
- break;
- case A52_2F2R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_2F2R;
- break;
- /* unknown */
- default:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_STEREO;
- }
-
- /* add in our own LFE flag if the source has LFE */
- if (audio->ac3flags & A52_LFE)
- {
- audio->input_channel_layout = audio->input_channel_layout | HB_INPUT_CH_LAYOUT_HAS_LFE;
- }
- }
-
- snprintf( audio->lang, sizeof( audio->lang ), "%s (%s)", strlen(lang->native_name) ? lang->native_name : lang->eng_name,
- audio->codec == HB_ACODEC_AC3 ? "AC3" : ( audio->codec == HB_ACODEC_MPGA ? "MPEG" : ( audio->codec == HB_ACODEC_DCA ? "DTS" : "LPCM" ) ) );
- snprintf( audio->lang_simple, sizeof( audio->lang_simple ), "%s", strlen(lang->native_name) ? lang->native_name : lang->eng_name );
- snprintf( audio->iso639_2, sizeof( audio->iso639_2 ), "%s", lang->iso639_2);
-
- if ( (audio->ac3flags & A52_CHANNEL_MASK) == A52_DOLBY ) {
- sprintf( audio->lang + strlen( audio->lang ),
- " (Dolby Surround)" );
- } else {
- sprintf( audio->lang + strlen( audio->lang ),
- " (%d.%d ch)",
- HB_INPUT_CH_LAYOUT_GET_DISCRETE_FRONT_COUNT(audio->input_channel_layout) +
- HB_INPUT_CH_LAYOUT_GET_DISCRETE_REAR_COUNT(audio->input_channel_layout),
- HB_INPUT_CH_LAYOUT_GET_DISCRETE_LFE_COUNT(audio->input_channel_layout));
- }
-
- hb_log( "hb_stream_update_audio: id=%x, lang=%s, 3cc=%s, rate = %d, bitrate = %d, flags = 0x%x (%d)", audio->id, audio->lang, audio->iso639_2, audio->rate, audio->bitrate, audio->ac3flags, audio->ac3flags );
-
-}
-
-/***********************************************************************
- * hb_stream_put_back
- ***********************************************************************
- *
- **********************************************************************/
-static void hb_stream_put_back(hb_stream_t *stream, int i)
-{
- if (stream->stream_type == hb_stream_type_program)
- {
- // Program streams are pretty easy - we just reposition the source file
- // pointer
- fseeko(stream->file_handle, -(HB_DVD_READ_BUFFER_SIZE-i), SEEK_CUR);
+ // demuxing buffer for TS to PS conversion
+ stream->ts_buf[i] = malloc( HB_DVD_READ_BUFFER_SIZE );
}
- else if (stream->stream_type == hb_stream_type_transport)
- {
- int read_buffer_index = stream->ps_current_read_buffer_index;
- // Transport streams are a little more tricky - so long as the
- // amount to back up is still within the current decode buffer
- // we can just adjust the read pos.
- if (stream->ps_decode_buffer[read_buffer_index].read_pos - i > 0)
- {
- stream->ps_decode_buffer[read_buffer_index].read_pos -= i;
- }
- else
- hb_error("hb_stream_put_back - trying to step beyond the start of the buffer, read_pos = %d amt to put back = %d\n", stream->ps_decode_buffer[read_buffer_index].read_pos, i);
- }
+ stream->ts_streamid[0] = 0xE0; // stream 0 must be video
}
+#define MAX_HOLE 208*80
-/***********************************************************************
- * hb_ts_stream_init
- ***********************************************************************
- *
- **********************************************************************/
- #define PS_DECODE_BUFFER_SIZE ( 1024 * 1024 * 4)
-
-static void hb_ts_stream_init(hb_stream_t *stream)
+static off_t align_to_next_packet(hb_stream_t *stream)
{
- // Output Program Stream
- int i=0;
- for (i=0; i < kNumDecodeBuffers; i++)
- {
- stream->ps_decode_buffer[i].data = (unsigned char *) malloc(PS_DECODE_BUFFER_SIZE);
- stream->ps_decode_buffer[i].read_pos = 0;
- stream->ps_decode_buffer[i].size = PS_DECODE_BUFFER_SIZE;
- stream->ps_decode_buffer[i].len = 0;
- stream->ps_decode_buffer[i].write_pos = 0;
- }
-
- for (i=0; i < kMaxNumberDecodeStreams; i++)
- {
- stream->ts_streamcont[i] = -1;
- }
-
- stream->ps_current_write_buffer_index = 0;
- stream->ps_current_read_buffer_index = 1;
-
- // Find the audio and video pids in the stream
- hb_ts_stream_find_pids(stream);
+ uint8_t buf[MAX_HOLE];
+ off_t pos = 0;
+ off_t start = ftello(stream->file_handle);
- for (i=0; i < stream->ts_number_video_pids; i++)
- {
- // In progress audio/video data during the transport stream -> program stream processing
- stream->ts_packetbuf[i] = (unsigned char *) malloc(1024 * 1024);
- stream->ts_streamid[i] = 0xE0; // Stream is Video
- }
+ if ( start >= stream->packetsize ) {
+ start -= stream->packetsize;
+ fseeko(stream->file_handle, start, SEEK_SET);
+ }
- for (i = stream->ts_number_video_pids; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
+ if (fread(buf, sizeof(buf), 1, stream->file_handle) == 1)
{
- stream->ts_packetbuf[i] = (unsigned char *) malloc(1024 * 1024);
- }
-}
-
-// ------------------------------------------------------------------------------------
-
-static off_t align_to_next_packet(FILE* f)
-{
- unsigned char buf[188*20];
-
- off_t start = ftello(f);
- off_t pos = 0;
+ const uint8_t *bp = buf;
+ int i;
- if (fread(buf, 188*20, 1, f) == 1)
- {
- int found = 0;
- while (!found && (pos < 188))
- {
- found = 1;
- int i = 0;
- for (i = 0; i < 188*20; i += 188)
- {
- unsigned char c = buf[pos+i];
- // Check sync byte
- if ((c != 0x47) && (c != 0x72) && (c != 0x29))
- {
- // this offset failed, try next
- found = 0;
- pos++;
- break;
- }
- }
- }
+ for ( i = sizeof(buf); --i >= 0; ++bp )
+ {
+ if ( have_ts_sync( bp, stream->packetsize ) )
+ {
+ break;
+ }
+ }
+ if ( i >= 0 )
+ {
+ pos = ( bp - buf ) - stream->packetsize + 188;
+ if ( pos < 0 )
+ pos = 0;
+ }
}
-
- if (pos == 188)
- pos = 0; // failed to find anything!!!!!?
-
- fseeko(f, start+pos, SEEK_SET);
-
+ fseeko(stream->file_handle, start+pos, SEEK_SET);
return pos;
}
-// ------------------------------------------------------------------------------------
-int bitpos = 0;
-unsigned int bitval = 0;
-unsigned char* bitbuf = NULL;
-unsigned int bitmask[] = {
+typedef struct {
+ uint8_t *buf;
+ uint32_t val;
+ int pos;
+} bitbuf_t;
+
+static const unsigned int bitmask[] = {
0x0,0x1,0x3,0x7,0xf,0x1f,0x3f,0x7f,0xff,
0x1ff,0x3ff,0x7ff,0xfff,0x1fff,0x3fff,0x7fff,0xffff,
0x1ffff,0x3ffff,0x7ffff,0xfffff,0x1fffff,0x3fffff,0x7fffff,0xffffff,
0x1ffffff,0x3ffffff,0x7ffffff,0xfffffff,0x1fffffff,0x3fffffff,0x7fffffff,0xffffffff};
-static inline void set_buf(unsigned char* buf, int bufsize, int clear)
+static inline void set_buf(bitbuf_t *bb, uint8_t* buf, int bufsize, int clear)
{
- bitpos = 0;
- bitbuf = buf;
- bitval = (bitbuf[0] << 24) | (bitbuf[1] << 16) | (bitbuf[2] << 8) | bitbuf[3];
+ bb->pos = 0;
+ bb->buf = buf;
+ bb->val = (bb->buf[0] << 24) | (bb->buf[1] << 16) |
+ (bb->buf[2] << 8) | bb->buf[3];
if (clear)
- memset(bitbuf, 0, bufsize);
-}
-
-static inline int buf_size()
-{
- return bitpos >> 3;
+ memset(bb->buf, 0, bufsize);
}
-static inline void set_bits(unsigned int val, int bits)
+static inline int buf_size(bitbuf_t *bb)
{
- val &= bitmask[bits];
-
- while (bits > 0)
- {
- int bitsleft = (8 - (bitpos & 7));
- if (bits >= bitsleft)
- {
- bitbuf[bitpos >> 3] |= val >> (bits - bitsleft);
- bitpos += bitsleft;
- bits -= bitsleft;
- val &= bitmask[bits];
- }
- else
- {
- bitbuf[bitpos >> 3] |= val << (bitsleft - bits);
- bitpos += bits;
- bits = 0;
- }
- }
+ return bb->pos >> 3;
}
-static inline unsigned int get_bits(int bits)
+static inline unsigned int get_bits(bitbuf_t *bb, int bits)
{
unsigned int val;
- int left = 32 - (bitpos & 31);
+ int left = 32 - (bb->pos & 31);
if (bits < left)
{
- val = (bitval >> (left - bits)) & bitmask[bits];
- bitpos += bits;
+ val = (bb->val >> (left - bits)) & bitmask[bits];
+ bb->pos += bits;
}
else
{
- val = (bitval & bitmask[left]) << (bits - left);
- bitpos += left;
+ val = (bb->val & bitmask[left]) << (bits - left);
+ bb->pos += left;
bits -= left;
- int pos = bitpos >> 3;
- bitval = (bitbuf[pos] << 24) | (bitbuf[pos + 1] << 16) | (bitbuf[pos + 2] << 8) | bitbuf[pos + 3];
+ int pos = bb->pos >> 3;
+ bb->val = (bb->buf[pos] << 24) | (bb->buf[pos + 1] << 16) | (bb->buf[pos + 2] << 8) | bb->buf[pos + 3];
if (bits > 0)
{
- val |= (bitval >> (32 - bits)) & bitmask[bits];
- bitpos += bits;
+ val |= (bb->val >> (32 - bits)) & bitmask[bits];
+ bb->pos += bits;
}
}
}
}
+static const char *stream_type_name (uint8_t stream_type)
+{
+ return st2codec[stream_type].name? st2codec[stream_type].name : "Unknown";
+}
+
int decode_program_map(hb_stream_t* stream)
{
- set_buf(stream->pmt_info.tablebuf, stream->pmt_info.tablepos, 0);
+ bitbuf_t bb;
+ set_buf(&bb, stream->pmt_info.tablebuf, stream->pmt_info.tablepos, 0);
- get_bits(8); // table_id
- get_bits(4);
- unsigned int section_length = get_bits(12);
+ get_bits(&bb, 8); // table_id
+ get_bits(&bb, 4);
+ unsigned int section_length = get_bits(&bb, 12);
stream->pmt_info.section_length = section_length;
- unsigned int program_number = get_bits(16);
+ unsigned int program_number = get_bits(&bb, 16);
stream->pmt_info.program_number = program_number;
- get_bits(2);
- get_bits(5); // version_number
- get_bits(1);
- get_bits(8); // section_number
- get_bits(8); // last_section_number
- get_bits(3);
- unsigned int PCR_PID = get_bits(13);
+ get_bits(&bb, 2);
+ get_bits(&bb, 5); // version_number
+ get_bits(&bb, 1);
+ get_bits(&bb, 8); // section_number
+ get_bits(&bb, 8); // last_section_number
+ get_bits(&bb, 3);
+ unsigned int PCR_PID = get_bits(&bb, 13);
stream->pmt_info.PCR_PID = PCR_PID;
- get_bits(4);
- unsigned int program_info_length = get_bits(12);
+ get_bits(&bb, 4);
+ unsigned int program_info_length = get_bits(&bb, 12);
stream->pmt_info.program_info_length = program_info_length;
int i=0;
unsigned char *descriptor_buf = (unsigned char *) malloc(program_info_length);
for (i = 0; i < program_info_length; i++)
{
- descriptor_buf[i] = get_bits(8);
+ descriptor_buf[i] = get_bits(&bb, 8);
}
int cur_pos = 9 /* data after the section length field*/ + program_info_length;
int done_reading_stream_types = 0;
while (!done_reading_stream_types)
- {
- unsigned char stream_type = get_bits(8);
- get_bits(3);
- unsigned int elementary_PID = get_bits(13);
- get_bits(4);
- unsigned int ES_info_length = get_bits(12);
-
- int i=0;
- unsigned char *ES_info_buf = (unsigned char *) malloc(ES_info_length);
- for (i=0; i < ES_info_length; i++)
- {
- ES_info_buf[i] = get_bits(8);
- }
-
- if (stream_type == 0x02)
- {
- if (stream->ts_number_video_pids <= kMaxNumberVideoPIDS)
- stream->ts_number_video_pids++;
- stream->ts_video_pids[stream->ts_number_video_pids-1] = elementary_PID;
- }
- else
- {
- // Defined audio stream types are 0x81 for AC-3/A52 audio and 0x03
- // for mpeg audio. But content producers seem to use other
- // values (0x04 and 0x06 have both been observed) so at this point
- // we say everything that isn't a video pid is audio then at the end
- // of hb_stream_title_scan we'll figure out which are really audio
- // by looking at the PES headers.
- i = stream->ts_number_audio_pids;
- if (i < kMaxNumberAudioPIDS)
- stream->ts_number_audio_pids++;
- stream->ts_audio_pids[i] = elementary_PID;
- stream->ts_audio_stream_type[i] = stream_type;
-
- if (ES_info_length > 0)
- {
- decode_element_descriptors(stream, i, ES_info_buf, ES_info_length);
- }
- }
+ {
+ unsigned char stream_type = get_bits(&bb, 8);
+ get_bits(&bb, 3);
+ unsigned int elementary_PID = get_bits(&bb, 13);
+ get_bits(&bb, 4);
+ unsigned int ES_info_length = get_bits(&bb, 12);
+
+ int i=0;
+ unsigned char *ES_info_buf = (unsigned char *) malloc(ES_info_length);
+ for (i=0; i < ES_info_length; i++)
+ {
+ ES_info_buf[i] = get_bits(&bb, 8);
+ }
- cur_pos += 5 /* stream header */ + ES_info_length;
- free(ES_info_buf);
+ if ( index_of_pid( elementary_PID, stream ) < 0 )
+ {
+ // already have this pid - do nothing
+ }
+ if (stream->ts_number_video_pids == 0 && st2codec[stream_type].kind == V )
+ {
+ stream->ts_video_pids[0] = elementary_PID;
+ stream->ts_stream_type[0] = stream_type;
+ stream->ts_number_video_pids = 1;
+ }
+ else
+ {
+ // Defined audio stream types are 0x81 for AC-3/A52 audio and 0x03
+ // for mpeg audio. But content producers seem to use other
+ // values (0x04 and 0x06 have both been observed) so at this point
+ // we say everything that isn't a video pid is audio then at the end
+ // of hb_stream_title_scan we'll figure out which are really audio
+ // by looking at the PES headers.
+ i = stream->ts_number_audio_pids;
+ if (i < kMaxNumberAudioPIDS)
+ {
+ stream->ts_audio_pids[i] = elementary_PID;
+ stream->ts_stream_type[1 + i] = stream_type;
+ if (ES_info_length > 0)
+ {
+ decode_element_descriptors(stream, i, ES_info_buf,
+ ES_info_length);
+ }
+ ++stream->ts_number_audio_pids;
+ }
+ }
- if (cur_pos >= section_length - 4 /* stop before the CRC */)
- done_reading_stream_types = 1;
- }
+ cur_pos += 5 /* stream header */ + ES_info_length;
+
+ free(ES_info_buf);
+
+ if (cur_pos >= section_length - 4 /* stop before the CRC */)
+ done_reading_stream_types = 1;
+ }
free(descriptor_buf);
return 1;
}
-// ------------------------------------------------------------------------------------
-
-int build_program_map(unsigned char *buf, hb_stream_t *stream)
+static int build_program_map(const uint8_t *buf, hb_stream_t *stream)
{
// Get adaption header info
int adapt_len = 0;
// Get pointer length - only valid in packets with a start flag
int pointer_len = 0;
- if (start && stream->pmt_info.reading)
- {
- // We just finished a bunch of packets - parse the program map details
- int decode_ok = 0;
- if (stream->pmt_info.tablebuf[0] == 0x02)
- decode_ok = decode_program_map(stream);
- free(stream->pmt_info.tablebuf);
- stream->pmt_info.tablebuf = NULL;
- stream->pmt_info.tablepos = 0;
- stream->pmt_info.reading = 0;
- if (decode_ok)
- return decode_ok;
- }
if (start)
{
memcpy(stream->pmt_info.tablebuf + stream->pmt_info.tablepos, buf + 4 + adapt_len + pointer_len, amount_to_copy);
stream->pmt_info.tablepos += amount_to_copy;
}
+ if (stream->pmt_info.tablepos > 3)
+ {
+ // We have enough to check the section length
+ int length;
+ length = ((stream->pmt_info.tablebuf[1] << 8) +
+ stream->pmt_info.tablebuf[2]) & 0xFFF;
+ if (stream->pmt_info.tablepos > length + 1)
+ {
+ // We just finished a bunch of packets - parse the program map details
+ int decode_ok = 0;
+ if (stream->pmt_info.tablebuf[0] == 0x02)
+ decode_ok = decode_program_map(stream);
+ free(stream->pmt_info.tablebuf);
+ stream->pmt_info.tablebuf = NULL;
+ stream->pmt_info.tablepos = 0;
+ stream->pmt_info.reading = 0;
+ if (decode_ok)
+ return decode_ok;
+ }
+
+ }
return 0;
}
-int decode_PAT(unsigned char *buf, hb_stream_t *stream)
+static int decode_PAT(const uint8_t *buf, hb_stream_t *stream)
{
unsigned char tablebuf[1024];
unsigned int tablepos = 0;
unsigned int pos = 0;
//while (pos < tablepos)
{
- set_buf(tablebuf + pos, tablepos - pos, 0);
-
- unsigned char section_id = get_bits(8);
- get_bits(4);
- unsigned int section_len = get_bits(12);
- get_bits(16); // transport_id
- get_bits(2);
- get_bits(5); // version_num
- get_bits(1); // current_next
- get_bits(8); // section_num
- get_bits(8); // last_section
+ bitbuf_t bb;
+ set_buf(&bb, tablebuf + pos, tablepos - pos, 0);
+
+ unsigned char section_id = get_bits(&bb, 8);
+ get_bits(&bb, 4);
+ unsigned int section_len = get_bits(&bb, 12);
+ get_bits(&bb, 16); // transport_id
+ get_bits(&bb, 2);
+ get_bits(&bb, 5); // version_num
+ get_bits(&bb, 1); // current_next
+ get_bits(&bb, 8); // section_num
+ get_bits(&bb, 8); // last_section
switch (section_id)
{
stream->ts_number_pat_entries = 0;
while ((curr_pos < section_len) && (stream->ts_number_pat_entries < kMaxNumberPMTStreams))
{
- unsigned int pkt_program_num = get_bits(16);
+ unsigned int pkt_program_num = get_bits(&bb, 16);
stream->pat_info[stream->ts_number_pat_entries].program_number = pkt_program_num;
- get_bits(3); // Reserved
+ get_bits(&bb, 3); // Reserved
if (pkt_program_num == 0)
{
- get_bits(13); // pkt_network_id
+ get_bits(&bb, 13); // pkt_network_id
}
else
{
- unsigned int pkt_program_map_PID = get_bits(13);
+ unsigned int pkt_program_map_PID = get_bits(&bb, 13);
stream->pat_info[stream->ts_number_pat_entries].program_map_PID = pkt_program_map_PID;
}
curr_pos += 4;
return 1;
}
-static int flushbuf(hb_stream_t *stream)
-{
- int old_write_index = stream->ps_current_write_buffer_index;
-
- // Flip the buffers and start moving on to the next
- stream->ps_current_write_buffer_index++;
- if (stream->ps_current_write_buffer_index > kNumDecodeBuffers-1)
- stream->ps_current_write_buffer_index = 0;
-
- if ( (stream->ps_decode_buffer[stream->ps_current_write_buffer_index].len != 0) || (stream->ps_decode_buffer[stream->ps_current_write_buffer_index].write_pos != 0) )
- {
- hb_log("flushbuf - new buffer (index %d) has non zero length and write position !", stream->ps_current_write_buffer_index);
- return 0;
- }
-
- stream->ps_current_read_buffer_index = old_write_index;
- stream->ps_decode_buffer[stream->ps_current_read_buffer_index].read_pos = 0;
-
- return 1;
-}
-
-static int fwrite64(void* buf, int elsize, int elnum, hb_stream_t* stream)
-{
- int size = elsize;
- if (elnum > 1)
- size *= elnum;
-
- int written = 0;
- int current_write_index = stream->ps_current_write_buffer_index;
-
- if (size <= stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos)
- {
- memcpy(stream->ps_decode_buffer[current_write_index].data + stream->ps_decode_buffer[current_write_index].write_pos, buf, size);
- stream->ps_decode_buffer[current_write_index].write_pos += size;
- stream->ps_decode_buffer[current_write_index].len = stream->ps_decode_buffer[current_write_index].write_pos;
- written = size;
- }
- else
- {
- memcpy(stream->ps_decode_buffer[current_write_index].data + stream->ps_decode_buffer[current_write_index].write_pos, buf, stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos);
- written += stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos;
- stream->ps_decode_buffer[current_write_index].write_pos += stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos;
- stream->ps_decode_buffer[current_write_index].len = stream->ps_decode_buffer[current_write_index].write_pos;
-
- if (flushbuf(stream))
- {
- // FLushing the buffer will have change the current write buffer
- current_write_index = stream->ps_current_write_buffer_index;
-
- memcpy(stream->ps_decode_buffer[current_write_index].data, (unsigned char*)buf + written, size - written);
- stream->ps_decode_buffer[current_write_index].write_pos += size - written;
- stream->ps_decode_buffer[current_write_index].len = stream->ps_decode_buffer[current_write_index].write_pos;
- written += size - written;
- }
- }
-
-
- if (elnum == 1 && written == size)
- return 1;
- else
- return written / elsize;
-}
-
-static int write_pack(hb_stream_t* stream, int64_t time)
-{
- unsigned char buf[64];
- set_buf(buf, 64, 1); // clear buffer
-
- int64_t ext_time = time % 300;
- time = time / 300;
-
- set_bits(0x000001ba, 32); // pack id 32
- set_bits(1, 2); // 0x01 2
- set_bits((unsigned int)(time >> 30), 3); // system_clock_reference_base 3
- set_bits(1, 1); // marker_bit 1
- set_bits((unsigned int)(time >> 15), 15); // system_clock_reference_base 15
- set_bits(1, 1); // marker_bit 1
- set_bits((unsigned int)time, 15); // system_clock_reference_base1 15
- set_bits(1, 1); // marker_bit 1
- set_bits((unsigned int)ext_time, 9); // system_clock_reference_extension 9
- set_bits(1, 1); // marker_bit 1
- set_bits(DEMUX, 22); // program_mux_rate 22
- set_bits(1, 1); // marker_bit 1
- set_bits(1, 1); // marker_bit 1
- set_bits(31, 5); // reserved 5
- set_bits(0, 3); // pack_stuffing_length 3
-
- return fwrite64(buf, buf_size(), 1, stream) == 1;
-}
-
-static int pad_buffer(hb_stream_t *stream, int pad)
-{
- pad -= 6;
-
- char buf[6];
- buf[0] = '\x0'; buf[1] = '\x0'; buf[2] = '\x1'; buf[3] = '\xbe';
- buf[4] = pad >> 8; buf[5] = pad & 0xff;
-
- if (fwrite64(buf, 6, 1, stream) != 1)
- return 0;
-
- unsigned char padbyte = 0xff;
- int i=0;
- for (i = 0; i < pad; i++)
- {
- if (fwrite64(&padbyte, 1, 1, stream) != 1)
- return 0;
- }
-
- return 1;
-}
-
-int make_pes_header(unsigned char* buf, int streamid, int len, int64_t PTS, int64_t DTS)
-{
- int hdrlen = 0;
- int PTS_DTS_flags = 0;
- if (PTS != -1)
- {
- if (DTS != -1)
- {
- PTS_DTS_flags = 3;
- hdrlen += 10;
- }
- else
- {
- PTS_DTS_flags = 2;
- hdrlen += 5;
- }
- }
-
- set_buf(buf, 9 + hdrlen, 1); // clear the buffer
-
- set_bits(0x000001, 24); // packet_start_code_prefix 24
- set_bits((unsigned int)streamid, 8); // directory_stream_id 8
- set_bits(len, 16); // PES_packet_length 16
- set_bits(0x2, 2); // '10' 2
- set_bits(0, 2); // PES_scrambling_control 2
- set_bits(1, 1); // PES_priority 1
- set_bits(0, 1); // data_alignment_indicator 1
- set_bits(0, 1); // copyright 1
- set_bits(0, 1); // original_or_copy 1
- set_bits(PTS_DTS_flags, 2); // PTS_DTS_flags 2
- set_bits(0, 1); // ESCR_flag 1
- set_bits(0, 1); // ES_rate_flag 1
- set_bits(0, 1); // DSM_trick_mode_flag 1
- set_bits(0, 1); // additional_copy_info_flag 1
- set_bits(0, 1); // PES_CRC_flag 1
- set_bits(0, 1); // PES_extension_flag 1
- set_bits(hdrlen, 8); // PES_header_data_length 8
-
- if (PTS_DTS_flags == 2)
- {
- set_bits(2, 4); // '0010' 4
- set_bits((unsigned int)(PTS >> 30), 3); // PTS [32..30] 3
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)(PTS >> 15), 15); // PTS [29..15] 15
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)PTS, 15); // PTS [14..0] 15
- set_bits(1, 1); // marker bit 1
- }
- else if (PTS_DTS_flags == 3)
- {
- set_bits(3, 4); // '0011' 4
- set_bits((unsigned int)(PTS >> 30), 3); // PTS [32..30] 3
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)(PTS >> 15), 15); // PTS [29..15] 15
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)PTS, 15); // PTS [14..0] 15
- set_bits(1, 1); // marker bit 1
- set_bits(1, 4); // '0001' 4
- set_bits((unsigned int)(DTS >> 30), 3); // DTS [32..30] 3
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)(DTS >> 15), 15); // DTS [29..15] 15
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)DTS, 15); // DTS [14..0] 15
- set_bits(1, 1); // marker bit 1
- }
-
- return buf_size();
-}
-
-int generate_output_data(hb_stream_t *stream, int write_ac3, int curstream, int pid)
-{
- unsigned char ac3_substream_id[4];
- int ac3len = 0;
-
- if (write_ac3)
- {
- // Make a four byte DVD ac3 stream header
- int ssid = (curstream - stream->ts_number_video_pids) & 0xf;
- ac3_substream_id[0] = 0x80 | ssid; // substream id
- ac3_substream_id[1] = 0x01; // number of sync words
- ac3_substream_id[2] = 0x00; // first offset (16 bits)
- ac3_substream_id[3] = 0x02;
- ac3len = 4;
- }
-
- int written = 0; // Bytes we've written to output file
- int pos = 0; // Position in PES packet buffer
-
- for (;;)
- {
- if ((stream->ps_decode_buffer[stream->ps_current_write_buffer_index].len % HB_DVD_READ_BUFFER_SIZE) != 0)
- {
- hb_log("write_output_stream - Packet's not falling on read buffer size boundries!");
- return 1;
- }
-
- // Get total length of this pack
- int len = min(14 + ac3len + stream->ts_packetpos[curstream] - pos, HB_DVD_READ_BUFFER_SIZE);
-
- // Figure out stuffing (if we have less than 16 bytes left)
- int stuffing = 0;
- if (len < HB_DVD_READ_BUFFER_SIZE && HB_DVD_READ_BUFFER_SIZE - len < 16)
- {
- stuffing = HB_DVD_READ_BUFFER_SIZE - len;
- len += stuffing;
- }
-
- // Write out pack header
- off_t file_offset = ftello(stream->file_handle);
- int64_t packet_time = (file_offset * CLOCKRATE / STREAMRATE) + 0 /*file_time*/;
- if (!write_pack(stream, packet_time))
- {
- hb_log("write_output_stream - Couldn't write pack header!");
- return 1;
- }
-
- stream->ts_packetbuf[curstream][pos + 3] =
- stream->ts_streamid[curstream];
-
- // Packet length..
- // Subtract pack size (14) and pes id and len (6) from lenth
- stream->ts_packetbuf[curstream][pos + 4] = (len - 6 - 14) >> 8; stream->ts_packetbuf[curstream][pos + 5] = (len - 6 - 14) & 0xFF;
-
- // Add any stuffing bytes to header extra len
- int hdrsize = 9 + stream->ts_packetbuf[curstream][pos + 8];
- stream->ts_packetbuf[curstream][pos + 8] += stuffing; // Add stuffing to header bytes
-
- // Write out id, streamid, len
- if (fwrite64(stream->ts_packetbuf[curstream] + pos, hdrsize, 1, stream) != 1) // Write pes id, streamid, and len
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
-
- // Write stuffing
- int i=0;
- for (i = 0; i < stuffing; i++) // Write any stuffing bytes
- {
- unsigned char stuff = 0xff;
- if (fwrite64(&stuff, 1, 1, stream) != 1)
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
- }
-
- // Write ac3 streamid
- if (ac3len != 0)
- {
- if (fwrite64(ac3_substream_id, ac3len, 1, stream) != 1)
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
- }
-
- // Write rest of data len minus headersize (9) stuffing, and pack size (14)
- if (fwrite64(stream->ts_packetbuf[curstream] + pos + hdrsize, len - hdrsize - 14 - stuffing - ac3len, 1, stream) != 1) // Write data bytes
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
- written += len;
-
- // Add len minus stuff we added like the pack (14) and the stuffing.
- pos += len - 14 - stuffing - ac3len;
- if (pos == stream->ts_packetpos[curstream])
- break;
-
- // Add pes header for next packet
- pos -= 9;
- make_pes_header(stream->ts_packetbuf[curstream] + pos, stream->ts_streamid[curstream], 0, -1, -1);
- }
-
- stream->ts_packetpos[curstream] = 0;
- stream->ts_streamcont[curstream] = -1;
-
- // Write padding
- if ((written % HB_DVD_READ_BUFFER_SIZE) != 0)
- {
- int left = HB_DVD_READ_BUFFER_SIZE - (written % HB_DVD_READ_BUFFER_SIZE);
-
- // Pad out to HB_DVD_READ_BUFFER_SIZE bytes
- if (!pad_buffer(stream, left))
- {
- hb_log("write_output_stream - Couldn't write pad buffer!");
- return 1;
- }
- }
-
- return 0;
-}
-
-static void hb_ts_handle_mpeg_audio(hb_stream_t *stream, int curstream, unsigned char* buf, int adapt_len )
-{
- // Although we don't have AC3/A52 audio here we can still use the same structure to record this useful information.
-
- stream->a52_info[curstream - stream->ts_number_video_pids].flags = A52_STEREO;
- stream->a52_info[curstream - stream->ts_number_video_pids].rate = 48000 /*Hz*/;
- stream->a52_info[curstream - stream->ts_number_video_pids].bitrate = 384000 /*Bps*/;
-}
-
-static int hb_ts_handle_ac3_audio(hb_stream_t *stream, int curstream, unsigned char* buf, int adapt_len )
-{
- int spos, dpos;
-
- // Make sure we start with 0x0b77
- if (stream->ts_packetbuf[curstream][9 + stream->ts_packetbuf[curstream][8]] != 0x0b || stream->ts_packetbuf[curstream][9 + stream->ts_packetbuf[curstream][8] + 1] != 0x77)
- {
- spos = 9 + stream->ts_packetbuf[curstream][8];
- dpos = 9 + stream->ts_packetbuf[curstream][8];
- while (spos <= stream->ts_packetpos[curstream] - 2 && !(stream->ts_packetbuf[curstream][spos] == 0x0b && stream->ts_packetbuf[curstream][spos + 1] == 0x77))
- spos++;
-
- if (!(stream->ts_packetbuf[curstream][spos] == 0x0b && stream->ts_packetbuf[curstream][spos + 1] == 0x77))
- {
- hb_log("hb_ts_stream_decode - Couldn't sync AC3 packet!");
- stream->ts_skipbad[curstream] = 1;
- return 0;
- }
-
- while (spos < stream->ts_packetpos[curstream])
- {
- stream->ts_packetbuf[curstream][dpos] = stream->ts_packetbuf[curstream][spos];
- spos++;
- dpos++;
- }
- stream->ts_packetpos[curstream] = dpos;
- }
-
- // Check the next packet to make sure IT starts with a 0x0b77
- int plen = 0;
- plen = 9 + buf[4 + adapt_len + 8];
- int pstart = 4 + adapt_len + plen;
- if (buf[pstart] != 0x0b || buf[pstart + 1] != 0x77)
- {
- spos = pstart;
- while (spos < 188 - 2 && !(buf[spos] == 0x0b && buf[spos + 1] == 0x77))
- {
- stream->ts_packetbuf[curstream][stream->ts_packetpos[curstream]] = buf[spos];
- stream->ts_packetpos[curstream]++;
- spos++;
- }
-
- if (!(buf[spos] == 0x0b && buf[spos + 1] == 0x77))
- {
- hb_log("hb_ts_stream_decode - Couldn't sync AC3 packet!");
- stream->ts_skipbad[curstream] = 1;
- return 0;
- }
-
- adapt_len = spos - 4 - plen;
-
- dpos = spos - 1;
- spos = pstart - 1;
- while (spos >= pstart - plen)
- {
- buf[dpos] = buf[spos];
- spos--;
- dpos--;
- }
- }
-
- int flags, rate, bitrate;
- if( a52_syncinfo( &buf[pstart], &flags, &rate, &bitrate ) )
- {
- stream->a52_info[curstream - stream->ts_number_video_pids].flags = flags;
- stream->a52_info[curstream - stream->ts_number_video_pids].rate = rate;
- stream->a52_info[curstream - stream->ts_number_video_pids].bitrate = bitrate;
- }
- return 1;
-}
-
static void hb_ts_stream_find_pids(hb_stream_t *stream)
{
- unsigned char buf[188];
-
// align to first packet
- align_to_next_packet(stream->file_handle);
+ align_to_next_packet(stream);
// Read the Transport Stream Packets (188 bytes each) looking at first for PID 0 (the PAT PID), then decode that
// to find the program map PID and then decode that to get the list of audio and video PIDs
- int bytesReadInPacket = 0;
for (;;)
{
- // Try to read packet..
- int bytesRead;
- if ((bytesRead = fread(buf+bytesReadInPacket, 1, 188-bytesReadInPacket, stream->file_handle)) != 188-bytesReadInPacket)
- {
- if (bytesRead < 0)
- bytesRead = 0;
- bytesReadInPacket += bytesRead;
+ const uint8_t *buf = next_packet( stream );
+ if ( buf == NULL )
+ {
hb_log("hb_ts_stream_find_pids - end of file");
break;
}
- else
- {
- bytesReadInPacket = 0;
- }
-
- // Check sync byte
- if ((buf[0] != 0x47) && (buf[0] != 0x72) && (buf[0] != 0x29))
- {
- hb_log("hb_ts_stream_find_pids - Bad transport packet (no sync byte 0x47)!");
- int i = 0;
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- stream->ts_skipbad[i] = 1;
- continue;
- }
// Get pid
int pid = (((buf[1] & 0x1F) << 8) | buf[2]) & 0x1FFF;
// on the first pat entry for which we find a matching program map PID. The ideal solution would
// be to build a title choice popup from the PAT program number details and then select from
// their - but right now the API's not capable of that.
- if (pid == stream->pat_info[pat_index].program_map_PID)
+ if (stream->pat_info[pat_index].program_number != 0 &&
+ pid == stream->pat_info[pat_index].program_map_PID)
{
if (build_program_map(buf, stream) > 0)
break;
if ((stream->ts_number_video_pids > 0) && (stream->ts_number_audio_pids > 0))
break;
}
+ // XXX - until we figure out how to handle VC1 just bail when we find it so
+ // that ffmpeg will claim the input stream.
+ if ( stream->ts_stream_type[0] == 0xea )
+ {
+ stream->ts_number_video_pids = 0;
+ stream->ts_number_audio_pids = 0;
+ return;
+ }
hb_log("hb_ts_stream_find_pids - found the following PIDS");
hb_log(" Video PIDS : ");
- int i=0;
+ int i;
for (i=0; i < stream->ts_number_video_pids; i++)
{
- hb_log(" 0x%x (%d)", stream->ts_video_pids[i], stream->ts_video_pids[i]);
+ hb_log( " 0x%x type %s (0x%x)",
+ stream->ts_video_pids[i],
+ stream_type_name(stream->ts_stream_type[i]),
+ stream->ts_stream_type[i]);
}
hb_log(" Audio PIDS : ");
for (i = 0; i < stream->ts_number_audio_pids; i++)
{
- hb_log(" 0x%x (%d)", stream->ts_audio_pids[i], stream->ts_audio_pids[i]);
+ hb_log( " 0x%x type %s (0x%x)",
+ stream->ts_audio_pids[i],
+ stream_type_name(stream->ts_stream_type[i+1]),
+ stream->ts_stream_type[i+1] );
}
}
-int index_of_video_pid(int pid, hb_stream_t *stream)
-{
- int found_pid = -1, i = 0;
- for (i = 0; (i < stream->ts_number_video_pids) && (found_pid < 0); i++)
- {
- if (pid == stream->ts_video_pids[i])
- found_pid = i;
- }
- return found_pid;
+static void fwrite64( hb_stream_t *stream, void *buf, int size )
+{
+ if ( (stream->fwrite_buf - stream->fwrite_buf_orig) + size > 2048 )
+ {
+ hb_log( "steam fwrite64 buffer overflow - writing %d with %d already",
+ size, stream->fwrite_buf - stream->fwrite_buf_orig );
+ return;
+ }
+ memcpy( stream->fwrite_buf, buf, size );
+ stream->fwrite_buf += size;
}
-int index_of_audio_pid(int pid, hb_stream_t *stream)
+static void write_pack(hb_stream_t* stream, uint64_t time, int stuffing)
{
- int i = 0, found_pid = -1;
+ uint8_t buf[24];
- for (i = 0; (i < stream->ts_number_audio_pids) && (found_pid < 0); i++)
- {
- if (pid == stream->ts_audio_pids[i])
- found_pid = i;
- }
- return found_pid;
-}
+ buf[0] = 0x00; // pack id
+ buf[1] = 0x00;
+ buf[2] = 0x01;
+ buf[3] = 0xba;
-int index_of_pid(int pid, hb_stream_t *stream)
-{
- int found_pid = -1;
+ buf[4] = 0x44 | // SCR
+ ( ( ( time >> 30 ) & 7 ) << 3 ) |
+ ( ( time >> 28 ) & 3 );
+ buf[5] = time >> 20;
+ buf[6] = 0x04 |
+ ( ( ( time >> 15 ) & 0x1f ) << 3 ) |
+ ( ( time >> 13 ) & 3 );
+ buf[7] = time >> 5;
+ buf[8] = 0x04 | ( time << 3 );
- if ((found_pid = index_of_video_pid(pid, stream)) >= 0)
- return found_pid;
+ buf[9] = 0x01; // SCR extension
- if ((found_pid = index_of_audio_pid(pid, stream)) >= 0)
- return found_pid;
+ buf[10] = 384000 >> (22 - 8); // program mux rate
+ buf[11] = (uint8_t)( 384000 >> (22 - 16) );
+ buf[12] = (uint8_t)( 384000 << 2 ) | 0x03;
- return found_pid;
+ buf[13] = 0xf8 | stuffing;
+
+ int i;
+ for (i = 0; i < stuffing; ++i )
+ buf[14+i] = 0xff;
+
+ fwrite64(stream, buf, 14 + stuffing );
}
-/***********************************************************************
- * hb_ts_stream_decode
- ***********************************************************************
- *
- **********************************************************************/
-static void hb_ts_stream_decode(hb_stream_t *stream)
+static void pad_buffer(hb_stream_t* stream, int pad)
{
- unsigned char buf[188];
- int curstream;
- int doing_iframe;
+ pad -= 6;
- int i = 0;
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- stream->ts_skipbad[i] = 0;
- }
+ uint8_t buf[6];
+ buf[0] = 0;
+ buf[1] = 0;
+ buf[2] = 0;
+ buf[3] = 0xbe;
+ buf[4] = pad >> 8;
+ buf[5] = pad;
- doing_iframe = 0;
+ fwrite64(stream, buf, 6);
- if ((stream->ts_number_video_pids == 0) || (stream->ts_number_audio_pids == 0))
- {
- hb_log("hb_ts_stream_decode - no Video or Audio PID selected, cannot decode transport stream");
- return;
+ buf[0] = 0xff;
+ while ( --pad >= 0 )
+ {
+ fwrite64(stream, buf, 1);
}
+}
- int curr_write_buffer_index = stream->ps_current_write_buffer_index;
+static void make_pes_header(hb_stream_t* stream, int len, uint8_t streamid)
+{
+ uint8_t buf[9];
- // Write output data until a buffer switch occurs.
- while (curr_write_buffer_index == stream->ps_current_write_buffer_index)
- {
- if ((fread(buf, 188, 1, stream->file_handle)) != 1)
- {
- // end of file - we didn't finish filling our ps write buffer
- // so just discard the remainder (the partial buffer is useless)
- hb_log("hb_ts_stream_decode - eof");
- stream->ps_decode_buffer[stream->ps_current_write_buffer_index].len = 0;
- return;
- }
+ memset(buf, 0, sizeof(buf) );
+ buf[2] = 1;
+ buf[3] = streamid;
+ buf[4] = ( len + 3 ) >> 8;
+ buf[5] = len + 3;
+ buf[6] = 0x88;
- // Check sync byte
- if ((buf[0] != 0x47) && (buf[0] != 0x72) && (buf[0] != 0x29))
- {
- // lost sync - back up to where we started then try to
- // re-establish sync.
- off_t pos = ftello(stream->file_handle) - 188;
- off_t pos2 = align_to_next_packet(stream->file_handle);
- if ( pos2 == 0 )
+ fwrite64(stream, buf, 9);
+}
+
+static void generate_output_data(hb_stream_t *stream, int curstream)
+{
+ uint8_t *tdat = stream->ts_buf[curstream];
+ int len;
+
+ // we always ship a PACK header plus all the data in our demux buf.
+ // AC3 audio also always needs its substream header.
+ len = 14 + stream->ts_pos[curstream];
+ if ( stream->ts_extra_hdr[curstream] )
+ {
+ len += 4;
+ }
+
+ if ( ! stream->ts_start[curstream] )
+ {
+ // we're in the middle of a chunk of PES data - we need to add
+ // a 'continuation' PES header after the PACK header.
+ len += 9;
+ }
+
+ // Write out pack header
+ // If we don't have 2048 bytes we need to pad to 2048. We can
+ // add a padding frame after our data but we need at least 7
+ // bytes of space to do it (6 bytes of header & 1 of pad). If
+ // we have fewer than 7 bytes left we need to fill the excess
+ // space with stuffing bytes added to the pack header.
+ int stuffing = 0;
+ if ( len > HB_DVD_READ_BUFFER_SIZE )
+ {
+ hb_log( "stream ts length botch %d", len );
+ }
+ if ( HB_DVD_READ_BUFFER_SIZE - len < 8)
+ {
+ stuffing = HB_DVD_READ_BUFFER_SIZE - len;
+ }
+ write_pack(stream, stream->ts_nextpcr, stuffing );
+ stream->ts_nextpcr += 10;
+
+ if ( stream->ts_start[curstream] )
+ {
+ // Start frames already have a PES header but we have modify it
+ // to map from TS PID to PS stream id. Also, if the stream is AC3
+ // audio we have to insert an AC3 stream header between the end of
+ // the PES header and the start of the stream data.
+
+ stream->ts_start[curstream] = 0;
+ tdat[3] = stream->ts_streamid[curstream];
+
+ uint16_t plen = stream->ts_pos[curstream] - 6;
+ if ( stream->ts_extra_hdr[curstream] )
+ {
+ // We have to add an AC3 header in front of the data. Add its
+ // size to the PES packet length.
+ plen += 4;
+ tdat[4] = plen >> 8;
+ tdat[5] = plen;
+
+ // Write out the PES header
+ int hdrsize = 9 + tdat[8];
+ fwrite64(stream, tdat, hdrsize);
+
+ // add a four byte DVD ac3 stream header
+ uint8_t ac3_substream_id[4];
+ int ssid = (curstream - stream->ts_number_video_pids) & 0xf;
+ ac3_substream_id[0] = 0x80 | ssid; // substream id
+ ac3_substream_id[1] = 0x01; // number of sync words
+ ac3_substream_id[2] = 0x00; // first offset (16 bits)
+ ac3_substream_id[3] = 0x02;
+ fwrite64(stream, ac3_substream_id, 4);
+
+ // add the rest of the data
+ fwrite64(stream, tdat + hdrsize, stream->ts_pos[curstream] - hdrsize);
+ }
+ else
+ {
+ // not audio - don't need to modify the stream so write what we've got
+ tdat[4] = plen >> 8;
+ tdat[5] = plen;
+ fwrite64( stream, tdat, stream->ts_pos[curstream] );
+ }
+ }
+ else
+ {
+ // data without a PES start header needs a simple 'continuation'
+ // PES header. AC3 audio also needs its substream header.
+ if ( stream->ts_extra_hdr[curstream] == 0 )
+ {
+ make_pes_header(stream, stream->ts_pos[curstream],
+ stream->ts_streamid[curstream]);
+ }
+ else
+ {
+ make_pes_header(stream, stream->ts_pos[curstream] + 4,
+ stream->ts_streamid[curstream]);
+
+ // add a four byte DVD ac3 stream header
+ uint8_t ac3_substream_id[4];
+ int ssid = (curstream - stream->ts_number_video_pids) & 0xf;
+ ac3_substream_id[0] = 0x80 | ssid; // substream id
+ ac3_substream_id[1] = 0x01; // number of sync words
+ ac3_substream_id[2] = 0x00; // first offset (16 bits)
+ ac3_substream_id[3] = 0x02;
+ fwrite64(stream, ac3_substream_id, 4);
+ }
+ fwrite64( stream, tdat, stream->ts_pos[curstream] );
+ }
+
+ // Write padding
+ int left = HB_DVD_READ_BUFFER_SIZE - len;
+ if ( left >= 8 )
+ {
+ pad_buffer(stream, left);
+ }
+
+ stream->ts_pos[curstream] = 0;
+}
+
+static int isIframe( hb_stream_t *stream, const uint8_t *buf, int adapt_len )
+{
+ // For mpeg2: look for a gop start or i-frame picture start
+ // for h.264: look for idr nal type or a slice header for an i-frame
+ // for vc1: ???
+ int i;
+ uint32_t strid = 0;
+
+
+ if ( stream->ts_stream_type[0] <= 2 )
+ {
+ // This section of the code handles MPEG-1 and MPEG-2 video streams
+ for (i = 13 + adapt_len; i < 188; i++)
+ {
+ strid = (strid << 8) | buf[i];
+ if ( ( strid >> 8 ) == 1 )
{
- hb_log( "hb_ts_stream_decode: eof while re-establishing sync @ %lld",
- pos );
- stream->ps_decode_buffer[stream->ps_current_write_buffer_index].len = 0;
- return;
+ // we found a start code
+ uint8_t id = strid;
+ switch ( id )
+ {
+ case 0xB8: // group_start_code (GOP header)
+ case 0xB3: // sequence_header code
+ return 1;
+
+ case 0x00: // picture_start_code
+ // picture_header, let's see if it's an I-frame
+ if (i<185)
+ {
+ // check if picture_coding_type == 1
+ if ((buf[i+2] & (0x7 << 3)) == (1 << 3))
+ {
+ // found an I-frame picture
+ return 1;
+ }
+ }
+ break;
+ }
}
- hb_log("hb_ts_stream_decode: sync lost @%lld, regained after %lld bytes",
- pos, pos2 );
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- stream->ts_skipbad[i] = 1;
- }
- continue;
- }
+ }
+ // didn't find an I-frame
+ return 0;
+ }
+ if ( stream->ts_stream_type[0] == 0x1b )
+ {
+ // we have an h.264 stream
+ for (i = 13 + adapt_len; i < 188; i++)
+ {
+ strid = (strid << 8) | buf[i];
+ if ( ( strid >> 8 ) == 1 )
+ {
+ // we found a start code - remove the ref_idc from the nal type
+ uint8_t nal_type = strid & 0x1f;
+ if ( nal_type == 0x05 )
+ // h.264 IDR picture start
+ return 1;
- // Get pid
- int pid = (((buf[1] & 0x1F) << 8) | buf[2]) & 0x1FFF;
+ if ( stream->packetsize == 192 )
+ {
+ // m2ts files have idr frames so keep looking for one
+ continue;
+ }
- // Get the pos and buf - we organize our streams as 'n' video streams then 'm' audio streams
- int index_of_selected_pid;
- if ((index_of_selected_pid = index_of_video_pid(pid,stream)) < 0)
- {
- // Not a video PID perhaps audio ?
- if ((index_of_selected_pid = index_of_audio_pid(pid,stream)) < 0)
- {
- // not a pid we want
- continue;
- }
- else
- {
- curstream = stream->ts_number_video_pids + index_of_selected_pid;
- }
+ // h226 in ts files (ATSC or DVB video) often seem to be
+ // missing IDR frames so look for at least an I
+ if ( nal_type == 0x01 )
+ {
+ // h.264 slice: has to be start MB 0 & type I (2, 4, 7 or 9)
+ uint8_t id = buf[i+1];
+ if ( ( id >> 4 ) == 0x0b || ( id >> 2 ) == 0x25 ||
+ id == 0x88 || id == 0x8a )
+ {
+ return 1;
+ }
+ }
+ }
+ }
+ // didn't find an I-frame
+ return 0;
+ }
+
+ // we don't understand the stream type so just say "yes" otherwise
+ // we'll discard all the video.
+ return 1;
+}
+
+/***********************************************************************
+ * hb_ts_stream_decode
+ ***********************************************************************
+ *
+ **********************************************************************/
+static int hb_ts_stream_decode( hb_stream_t *stream, uint8_t *obuf )
+{
+ /*
+ * stash the output buffer pointer in our stream so we don't have to
+ * pass it & its original value to everything we call.
+ */
+ stream->fwrite_buf = obuf;
+ stream->fwrite_buf_orig = obuf;
+
+ // spin until we get a packet of data from some stream or hit eof
+ while ( 1 )
+ {
+ int64_t pcr = stream->ts_lastpcr;
+ int curstream;
+
+ const uint8_t *buf = next_packet(stream);
+ if ( buf == NULL )
+ {
+ // end of file - we didn't finish filling our ps write buffer
+ // so just discard the remainder (the partial buffer is useless)
+ hb_log("hb_ts_stream_decode - eof");
+ return 0;
}
- else
- curstream = index_of_selected_pid;
- // Get start code
- int start;
- start = (buf[1] & 0x40) != 0;
+ /* This next section validates the packet */
- if (!start && stream->ts_skipbad[curstream])
- continue;
+ // Get pid and use it to find stream state.
+ int pid = ((buf[1] & 0x1F) << 8) | buf[2];
+ if ( ( curstream = index_of_pid( pid, stream ) ) < 0 )
+ continue;
// Get error
int errorbit = (buf[1] & 0x80) != 0;
if (errorbit)
{
- hb_log("hb_ts_stream_decode - Error bit set in packet");
- stream->ts_skipbad[curstream] = 1;
+ ts_err( stream, curstream, "packet error bit set");
continue;
}
// Get adaption header info
int adaption = (buf[3] & 0x30) >> 4;
int adapt_len = 0;
-
- // Get continuity
- // Continuity only increments for adaption values of 0x3 or 0x01
- int continuity = (buf[3] & 0xF);
- if ((stream->ts_streamcont[curstream] != -1) && ((adaption & 0x01) != 0))
- {
- if (continuity != ((stream->ts_streamcont[curstream] + 1) & 0xF))
- {
- hb_log("hb_ts_stream_decode - Bad continuity code in packet");
- stream->ts_skipbad[curstream] = 1;
- continue;
- }
- stream->ts_streamcont[curstream] = continuity;
- }
-
- // Get adaption header size
if (adaption == 0)
{
- hb_log("hb_ts_stream_decode - Bad adaption code (code was 0)!");
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- stream->ts_skipbad[i] = 1;
- }
+ ts_err( stream, curstream, "adaptation code 0");
continue;
}
else if (adaption == 0x2)
adapt_len = buf[4] + 1;
if (adapt_len > 184)
{
- hb_log("hb_ts_stream_decode - Invalid adapt len %d", adapt_len);
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- stream->ts_skipbad[i] = 1;
- }
+ ts_err( stream, curstream, "invalid adapt len %d", adapt_len);
+ continue;
}
}
- // HBO is slick, it doesn't bother to sync AC3 packets with PES elementary stream packets.. so
- // we have to swizzle them together! (ARGHH!)
- if (start && curstream >= stream->ts_number_video_pids &&
- stream->ts_audio_stream_type[curstream - stream->ts_number_video_pids]
- != 0x03)
- {
- // Is there an AC3 packet start 0b77 code in this packet??
- int sync_found = 0;
- unsigned char *p = buf + 4 + adapt_len;
- while (p <= buf + 186)
- {
- if (p[0] == 0x0b && p[1] == 0x77)
- {
- sync_found = 1;
- break;
- }
- p++;
- }
+ // if there's an adaptation header & PCR_flag is set
+ // get the PCR (Program Clock Reference)
+ if ( adapt_len > 7 && ( buf[5] & 0x10 ) != 0 )
+ {
+ pcr = ( (uint64_t)buf[6] << (33 - 8) ) |
+ ( (uint64_t)buf[7] << (33 - 16) ) |
+ ( (uint64_t)buf[8] << (33 - 24) ) |
+ ( (uint64_t)buf[9] << (33 - 32) ) |
+ ( buf[10] >> 7 );
+ stream->ts_nextpcr = pcr;
+
+ // remember the pcr across calls to this routine
+ stream->ts_lastpcr = pcr;
+ }
- // Couldn't find an AC3 sync start in this packet.. don't make a PES packet!
- if (!sync_found)
- {
- adapt_len = 184;
- start = 0;
- }
- }
+ // If we don't have a pcr yet, the right thing to do here would
+ // be a 'continue' so we don't process anything until we have a
+ // clock reference. Unfortunately the HD Home Run appears to null
+ // out the pcr field of some streams so we keep going & substitute
+ // the video stream dts for the pcr when there's no pcr.
+
+ // Get continuity
+ // Continuity only increments for adaption values of 0x3 or 0x01
+ // and is not checked for start packets.
+
+ int start = (buf[1] & 0x40) != 0;
- // Found a random access point (now we can start a frame/audio packet..)
- if (start)
+ if ( (adaption & 0x01) != 0 )
{
- // Check to see if this is an i_frame (group of picture start)
- if (pid == stream->ts_video_pids[0])
- {
- // Look for the Group of Pictures packet.. indicates this is an I-Frame packet..
- doing_iframe = 0;
- unsigned int strid = 0;
- int i = 4;
- for (i = 4 + adapt_len; i < 188; i++)
- {
- strid = (strid << 8) | buf[i];
- if (strid == 0x000001B8) // group_start_code
- {
- // found a Group of Pictures header, subsequent picture must be an I-frame
- doing_iframe = 1;
- }
- else if (strid == 0x000001B3) // sequence_header code
- {
- doing_iframe = 1;
- }
- else if (strid == 0x00000100) // picture_start_code
- {
- // picture_header, let's see if it's an I-frame
- if (i<187)
- {
- // check if picture_coding_type == 1
- if ((buf[i+2] & (0x7 << 3)) == (1 << 3))
- {
- // found an I-frame picture
- doing_iframe = 1;
- }
- }
- }
-
- if (doing_iframe)
- {
- if (!stream->ts_foundfirst[curstream])
- {
- stream->ts_foundfirst[curstream] = 1;
-// first_video_PCR = PCR;
- }
- break;
- }
- }
- }
- else if (index_of_audio_pid(pid, stream) >= 0)
+ int continuity = (buf[3] & 0xF);
+ if ( continuity == stream->ts_streamcont[curstream] )
+ {
+ // we got a duplicate packet (usually used to introduce
+ // a PCR when one is needed). The only thing that can
+ // change in the dup is the PCR which we grabbed above
+ // so ignore the rest.
+ continue;
+ }
+ if ( !start && (stream->ts_streamcont[curstream] != -1) &&
+ stream->ts_foundfirst[curstream] &&
+ (continuity != ( (stream->ts_streamcont[curstream] + 1) & 0xf ) ) )
{
- if (stream->ts_foundfirst[0]) // Set audio found first ONLY after first video frame found. There's an assumption here that stream '0' is a video stream
- {
- stream->ts_foundfirst[curstream] |= 1;
- }
+ ts_err( stream, curstream, "continuity error: got %d expected %d",
+ (int)continuity,
+ (stream->ts_streamcont[curstream] + 1) & 0xf );
+ stream->ts_streamcont[curstream] = continuity;
+ continue;
}
+ stream->ts_streamcont[curstream] = continuity;
+ }
+
+ /* If we get here the packet is valid - process its data */
+
+ if ( start )
+ {
+ // Found a random access point (now we can start a frame/audio packet..)
// If we were skipping a bad packet, start fresh on this new PES packet..
if (stream->ts_skipbad[curstream] == 1)
{
+ // video skips to an iframe after a bad packet to minimize
+ // screen corruption
+ if ( curstream == 0 && !isIframe( stream, buf, adapt_len ) )
+ {
+ continue;
+ }
stream->ts_skipbad[curstream] = 0;
- stream->ts_packetpos[curstream] = 0;
}
- // Get the continuity code of this packet
- stream->ts_streamcont[curstream] = continuity;
- }
+ // If we don't have video yet, check to see if this is an
+ // i_frame (group of picture start)
+ if ( curstream == 0 )
+ {
+ if ( !stream->ts_foundfirst[0] )
+ {
+ if ( stream->need_keyframe )
+ {
+ if ( !isIframe( stream, buf, adapt_len ) )
+ {
+ // didn't find an I frame
+ continue;
+ }
+ stream->need_keyframe = 0;
+ }
+ stream->ts_foundfirst[0] = 1;
+ }
+ ++stream->frames;
- // Write a 2048 byte program stream packet..
- if (start && stream->ts_packetpos[curstream] > 0 && stream->ts_foundfirst[curstream] && !stream->ts_skipbad[curstream])
- {
- // Save the substream id block so we can added it to subsequent blocks
- int write_ac3 = 0;
- if (curstream >= stream->ts_number_video_pids)
- {
- // Curstream is a zero based index of streams and includes both video and audio streams, so we must subtract the numver of video streams
- // from the indes value used here since ts_audio_stream_type is indexed only by audio streams.
- if (stream->ts_audio_stream_type[curstream - stream->ts_number_video_pids] == 0x03)
- {
- hb_ts_handle_mpeg_audio(stream, curstream, buf, adapt_len);
- }
- else
- {
- write_ac3 = hb_ts_handle_ac3_audio(stream, curstream, buf, adapt_len);
- }
+ // if we don't have a pcr yet use the dts from this frame
+ if ( pcr == -1 )
+ {
+ // PES must begin with an mpeg start code & contain
+ // a DTS or PTS.
+ const uint8_t *pes = buf + adapt_len + 4;
+ if ( pes[0] != 0x00 || pes[1] != 0x00 || pes[2] != 0x01 ||
+ ( pes[7] >> 6 ) == 0 )
+ {
+ continue;
+ }
+ // if we have a dts use it otherwise use the pts
+ pes += (pes[7] & 0x40)? 14 : 9;
+
+ pcr = ( (uint64_t)(pes[0] & 0xe ) << 29 );
+ pcr |= ( pes[1] << 22 ) |
+ ( ( pes[2] >> 1 ) << 15 ) |
+ ( pes[3] << 7 ) |
+ ( pes[4] >> 1 );
+ stream->ts_nextpcr = pcr;
+ }
+ }
+ else if ( ! stream->ts_foundfirst[curstream] )
+ {
+ // start other streams only after first video frame found.
+ if ( ! stream->ts_foundfirst[0] )
+ {
+ continue;
+ }
+ stream->ts_foundfirst[curstream] = 1;
}
- if (generate_output_data(stream, write_ac3, curstream, pid) != 0)
- return ;
- }
+ // If we have some data already on this stream, turn it into
+ // a program stream packet. Then add the payload for this
+ // packet to the current pid's buffer.
+ if ( stream->ts_pos[curstream] )
+ {
+ generate_output_data(stream, curstream);
+ stream->ts_start[curstream] = 1;
+ memcpy(stream->ts_buf[curstream],
+ buf + 4 + adapt_len, 184 - adapt_len);
+ stream->ts_pos[curstream] = 184 - adapt_len;
+ return 1;
+ }
+ stream->ts_start[curstream] = 1;
+ }
// Add the payload for this packet to the current buffer
if (!stream->ts_skipbad[curstream] && stream->ts_foundfirst[curstream] &&
(184 - adapt_len) > 0)
{
- // XXX this shouldn't happen but we'll be paranoid
- if (stream->ts_packetpos[curstream] + 184 - adapt_len > 1024*1024)
+ memcpy(stream->ts_buf[curstream] + stream->ts_pos[curstream],
+ buf + 4 + adapt_len, 184 - adapt_len);
+ stream->ts_pos[curstream] += 184 - adapt_len;
+
+ // if the next TS packet could possibly overflow our 2K output buffer
+ // we need to generate a packet now. Overflow would be 184 bytes of
+ // data + the 9 byte PES hdr + the 14 byte PACK hdr = 211 bytes.
+ if ( stream->ts_pos[curstream] >= (HB_DVD_READ_BUFFER_SIZE - 216) )
{
- hb_log("hb_ts_stream_decode: ts_packetbuf overflow, pos = %d ,"
- "len = %d", stream->ts_packetpos[curstream],
- 184 - adapt_len );
- return;
+ // we have enough data to make a PS packet
+ generate_output_data(stream, curstream);
+ return 1;
}
- memcpy(stream->ts_packetbuf[curstream] + stream->ts_packetpos[curstream], buf + 4 + adapt_len, 184 - adapt_len);
- stream->ts_packetpos[curstream] += 184 - adapt_len;
}
}
}
-/***********************************************************************
- * hb_ts_stream_reset
- ***********************************************************************
- *
- **********************************************************************/
static void hb_ts_stream_reset(hb_stream_t *stream)
{
- int i=0;
- for (i=0; i < kNumDecodeBuffers; i++)
- {
- stream->ps_decode_buffer[i].read_pos = 0;
- stream->ps_decode_buffer[i].write_pos = 0;
- stream->ps_decode_buffer[i].len = 0;
- }
+ int i;
for (i=0; i < kMaxNumberDecodeStreams; i++)
{
+ stream->ts_pos[i] = 0;
+ stream->ts_foundfirst[i] = 0;
+ stream->ts_skipbad[i] = 0;
stream->ts_streamcont[i] = -1;
+ stream->ts_start[i] = 0;
}
- stream->ps_current_write_buffer_index = 0;
- stream->ps_current_read_buffer_index = 1;
+ stream->ts_lastpcr = -1;
+ stream->ts_nextpcr = -1;
+
+ stream->frames = 0;
+ stream->errors = 0;
+ stream->need_keyframe = 0;
+ stream->last_error_frame = -10000;
+ stream->last_error_count = 0;
+
+ align_to_next_packet(stream);
+}
+
+// ------------------------------------------------------------------
+// Support for reading media files via the ffmpeg libraries.
+
+static void ffmpeg_add_codec( hb_stream_t *stream, int stream_index )
+{
+ // add a codec to the context here so it will be there when we
+ // read the first packet.
+ AVCodecContext *context = stream->ffmpeg_ic->streams[stream_index]->codec;
+ context->workaround_bugs = FF_BUG_AUTODETECT;
+ context->error_recognition = 1;
+ context->error_concealment = FF_EC_GUESS_MVS|FF_EC_DEBLOCK;
+ AVCodec *codec = avcodec_find_decoder( context->codec_id );
+ avcodec_open( context, codec );
+}
+
+// The ffmpeg stream reader / parser shares a lot of state with the
+// decoder via a codec context kept in the AVStream of the reader's
+// AVFormatContext. Since decoding is done in a different thread we
+// have to somehow pass this codec context to the decoder and we have
+// to do it before the first packet is read (so we can't put the info
+// in the buf we'll send downstream). Decoders don't have any way to
+// get to the stream directly (they're not passed the title or job
+// pointers during a scan) so this is a back door for the decoder to
+// get the codec context. We just stick the stream pointer in the next
+// slot an array of pointers maintained as a circular list then return
+// the index into the list combined with the ffmpeg stream index as the
+// codec_param that will be passed to the decoder init routine. We make
+// the list 'big' (enough for 1024 simultaneously open ffmpeg streams)
+// so that we don't have to do a complicated allocator or worry about
+// deleting entries on close.
+//
+// Entries can only be added to this list during a scan and are never
+// deleted so the list access doesn't require locking.
+static hb_stream_t **ffmpeg_streams; // circular list of stream pointers
+static int ffmpeg_stream_cur; // where we put the last stream pointer
+#define ffmpeg_sl_bits (10) // log2 stream list size (in entries)
+#define ffmpeg_sl_size (1 << ffmpeg_sl_bits)
+
+// add a stream to the list & return the appropriate codec_param to access it
+static int ffmpeg_codec_param( hb_stream_t *stream, int stream_index )
+{
+ if ( !ffmpeg_streams )
+ {
+ ffmpeg_streams = calloc( ffmpeg_sl_size, sizeof(stream) );
+ }
+
+ // the title scan adds all the ffmpeg media streams at once so we
+ // only add a new entry to our stream list if the stream is different
+ // than last time.
+ int slot = ffmpeg_stream_cur;
+ if ( ffmpeg_streams[slot] != stream )
+ {
+ // new stream - put it in the next slot of the stream list
+ slot = ++ffmpeg_stream_cur & (ffmpeg_sl_size - 1);
+ ffmpeg_streams[slot] = stream;
+ }
+
+ ffmpeg_add_codec( stream, stream_index );
+
+ return ( stream_index << ffmpeg_sl_bits ) | slot;
+}
+
+// we're about to open 'title' to convert it - remap the stream associated
+// with the video & audio codec params of the title to refer to 'stream'
+// (the original scan stream was closed and no longer exists).
+static void ffmpeg_remap_stream( hb_stream_t *stream, hb_title_t *title )
+{
+ // tell ffmpeg we want a pts on every frame it returns
+ stream->ffmpeg_ic->flags |= AVFMT_FLAG_GENPTS;
+
+ // all the video & audio came from the same stream so remapping
+ // the video's stream slot takes care of everything.
+ int slot = title->video_codec_param & (ffmpeg_sl_size - 1);
+ ffmpeg_streams[slot] = stream;
+
+ // add codecs for all the streams used by the title
+ ffmpeg_add_codec( stream, title->video_codec_param >> ffmpeg_sl_bits );
- align_to_next_packet(stream->file_handle);
+ int i;
+ hb_audio_t *audio;
+ for ( i = 0; ( audio = hb_list_item( title->list_audio, i ) ); ++i )
+ {
+ if ( audio->config.in.codec == HB_ACODEC_FFMPEG )
+ {
+ ffmpeg_add_codec( stream,
+ audio->config.in.codec_param >> ffmpeg_sl_bits );
+ }
+ }
+}
+
+void *hb_ffmpeg_context( int codec_param )
+{
+ int slot = codec_param & (ffmpeg_sl_size - 1);
+ int stream_index = codec_param >> ffmpeg_sl_bits;
+ return ffmpeg_streams[slot]->ffmpeg_ic->streams[stream_index]->codec;
+}
+
+void *hb_ffmpeg_avstream( int codec_param )
+{
+ int slot = codec_param & (ffmpeg_sl_size - 1);
+ int stream_index = codec_param >> ffmpeg_sl_bits;
+ return ffmpeg_streams[slot]->ffmpeg_ic->streams[stream_index];
+}
+
+static AVFormatContext *ffmpeg_deferred_close;
+
+static int ffmpeg_open( hb_stream_t *stream, hb_title_t *title )
+{
+ if ( ffmpeg_deferred_close )
+ {
+ av_close_input_file( ffmpeg_deferred_close );
+ ffmpeg_deferred_close = NULL;
+ }
+ AVFormatContext *ic;
+
+ av_log_set_level( AV_LOG_ERROR );
+ if ( av_open_input_file( &ic, stream->path, NULL, 0, NULL ) < 0 )
+ {
+ return 0;
+ }
+ if ( av_find_stream_info( ic ) < 0 )
+ goto fail;
+
+ stream->ffmpeg_ic = ic;
+ stream->hb_stream_type = ffmpeg;
+ stream->ffmpeg_pkt = malloc(sizeof(*stream->ffmpeg_pkt));
+ av_init_packet( stream->ffmpeg_pkt );
+
+ if ( title )
+ {
+ // we're opening for read. scan passed out codec params that
+ // indexed its stream so we need to remap them so they point
+ // to this stream.
+ ffmpeg_remap_stream( stream, title );
+ av_log_set_level( AV_LOG_ERROR );
+ }
+ else
+ {
+ // we're opening for scan. let ffmpeg put some info into the
+ // log about what we've got.
+ av_log_set_level( AV_LOG_INFO );
+ dump_format( ic, 0, stream->path, 0 );
+ av_log_set_level( AV_LOG_ERROR );
+
+ // accept this file if it has at least one video stream we can decode
+ int i;
+ for (i = 0; i < ic->nb_streams; ++i )
+ {
+ if ( ic->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO )
+ {
+ break;
+ }
+ }
+ if ( i >= ic->nb_streams )
+ goto fail;
+ }
+ return 1;
+
+ fail:
+ av_close_input_file( ic );
+ return 0;
}
+static void ffmpeg_close( hb_stream_t *d )
+{
+ // XXX since we're sharing the CodecContext with the downstream
+ // decoder proc we can't close the stream. We need to reference count
+ // this so we can close it when both are done with their instance but
+ // for now just defer the close until the next stream open or close.
+ if ( ffmpeg_deferred_close )
+ {
+ av_close_input_file( ffmpeg_deferred_close );
+ }
+ ffmpeg_deferred_close = d->ffmpeg_ic;
+ if ( d->ffmpeg_pkt != NULL )
+ {
+ free( d->ffmpeg_pkt );
+ d->ffmpeg_pkt = NULL;
+ }
+}
+
+static void add_ffmpeg_audio( hb_title_t *title, hb_stream_t *stream, int id )
+{
+ AVStream *st = stream->ffmpeg_ic->streams[id];
+ AVCodecContext *codec = st->codec;
+
+ // scan will ignore any audio without a bitrate. Since we've already
+ // typed the audio in order to determine its codec we set up the audio
+ // paramters here.
+ if ( codec->bit_rate || codec->sample_rate )
+ {
+ static const int chan2layout[] = {
+ HB_INPUT_CH_LAYOUT_MONO, // We should allow no audio really.
+ HB_INPUT_CH_LAYOUT_MONO,
+ HB_INPUT_CH_LAYOUT_STEREO,
+ HB_INPUT_CH_LAYOUT_2F1R,
+ HB_INPUT_CH_LAYOUT_2F2R,
+ HB_INPUT_CH_LAYOUT_3F2R,
+ HB_INPUT_CH_LAYOUT_4F2R,
+ HB_INPUT_CH_LAYOUT_STEREO,
+ HB_INPUT_CH_LAYOUT_STEREO,
+ };
+
+ hb_audio_t *audio = calloc( 1, sizeof(*audio) );;
+
+ audio->id = id;
+ if ( codec->codec_id == CODEC_ID_AC3 )
+ {
+ audio->config.in.codec = HB_ACODEC_AC3;
+ }
+ else if ( codec->codec_id == CODEC_ID_DTS )
+ {
+ audio->config.in.codec = HB_ACODEC_DCA;
+ }
+ else
+ {
+ audio->config.in.codec = HB_ACODEC_FFMPEG;
+ audio->config.in.codec_param = ffmpeg_codec_param( stream, id );
+
+ audio->config.in.bitrate = codec->bit_rate? codec->bit_rate : 1;
+ audio->config.in.samplerate = codec->sample_rate;
+ audio->config.in.channel_layout = chan2layout[codec->channels & 7];
+ }
+
+ set_audio_description( audio, lang_for_code2( st->language ) );
+
+ hb_list_add( title->list_audio, audio );
+ }
+}
+
+static hb_title_t *ffmpeg_title_scan( hb_stream_t *stream )
+{
+ AVFormatContext *ic = stream->ffmpeg_ic;
+
+ // 'Barebones Title'
+ hb_title_t *title = hb_title_init( stream->path, 0 );
+ title->index = 1;
+
+ // Copy part of the stream path to the title name
+ char *sep = strrchr(stream->path, '/');
+ if (sep)
+ strcpy(title->name, sep+1);
+ char *dot_term = strrchr(title->name, '.');
+ if (dot_term)
+ *dot_term = '\0';
+
+ uint64_t dur = ic->duration * 90000 / AV_TIME_BASE;
+ title->duration = dur;
+ dur /= 90000;
+ title->hours = dur / 3600;
+ title->minutes = ( dur % 3600 ) / 60;
+ title->seconds = dur % 60;
+
+ // One Chapter
+ hb_chapter_t * chapter;
+ chapter = calloc( sizeof( hb_chapter_t ), 1 );
+ chapter->index = 1;
+ chapter->duration = title->duration;
+ chapter->hours = title->hours;
+ chapter->minutes = title->minutes;
+ chapter->seconds = title->seconds;
+ hb_list_add( title->list_chapter, chapter );
+
+ // set the title to decode the first video stream in the file
+ title->demuxer = HB_NULL_DEMUXER;
+ title->video_codec = 0;
+ int i;
+ for (i = 0; i < ic->nb_streams; ++i )
+ {
+ if ( ic->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO &&
+ avcodec_find_decoder( ic->streams[i]->codec->codec_id ) &&
+ title->video_codec == 0 )
+ {
+ title->video_id = i;
+ stream->ffmpeg_video_id = i;
+
+ // We have to use the 'internal' avcodec decoder because
+ // it needs to share the codec context from this video
+ // stream. The parser internal to av_read_frame
+ // passes a bunch of state info to the decoder via the context.
+ title->video_codec = WORK_DECAVCODECVI;
+ title->video_codec_param = ffmpeg_codec_param( stream, i );
+ }
+ else if ( ic->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO &&
+ avcodec_find_decoder( ic->streams[i]->codec->codec_id ) )
+ {
+ add_ffmpeg_audio( title, stream, i );
+ }
+ }
+
+ title->container_name = strdup( ic->iformat->name );
+ title->data_rate = ic->bit_rate;
+
+ return title;
+}
+
+static int64_t av_to_hb_pts( int64_t pts, double conv_factor )
+{
+ if ( pts == AV_NOPTS_VALUE )
+ return -1;
+ return (int64_t)( (double)pts * conv_factor );
+}
+
+static int ffmpeg_read( hb_stream_t *stream, hb_buffer_t *buf )
+{
+ int err;
+ again:
+ if ( ( err = av_read_frame( stream->ffmpeg_ic, stream->ffmpeg_pkt )) < 0 )
+ {
+ // XXX the following conditional is to handle avi files that
+ // use M$ 'packed b-frames' and occasionally have negative
+ // sizes for the null frames these require.
+ if ( err != AVERROR_NOMEM || stream->ffmpeg_pkt->size >= 0 )
+ // eof
+ return 0;
+ }
+ if ( stream->ffmpeg_pkt->size <= 0 )
+ {
+ // M$ "invalid and inefficient" packed b-frames require 'null frames'
+ // following them to preserve the timing (since the packing puts two
+ // or more frames in what looks like one avi frame). The contents and
+ // size of these null frames are ignored by the ff_h263_decode_frame
+ // as long as they're < 20 bytes. We need a positive size so we use
+ // one byte if we're given a zero or negative size. We don't know
+ // if the pkt data points anywhere reasonable so we just stick a
+ // byte of zero in our outbound buf.
+ buf->size = 1;
+ *buf->data = 0;
+ }
+ else
+ {
+ if ( stream->ffmpeg_pkt->size > buf->alloc )
+ {
+ // sometimes we get absurd sizes from ffmpeg
+ if ( stream->ffmpeg_pkt->size >= (1 << 25) )
+ {
+ hb_log( "ffmpeg_read: pkt too big: %d bytes", stream->ffmpeg_pkt->size );
+ av_free_packet( stream->ffmpeg_pkt );
+ return ffmpeg_read( stream, buf );
+ }
+ // need to expand buffer
+ hb_buffer_realloc( buf, stream->ffmpeg_pkt->size );
+ }
+ memcpy( buf->data, stream->ffmpeg_pkt->data, stream->ffmpeg_pkt->size );
+ buf->size = stream->ffmpeg_pkt->size;
+ }
+ buf->id = stream->ffmpeg_pkt->stream_index;
+ if ( buf->id == stream->ffmpeg_video_id )
+ {
+ if ( stream->need_keyframe &&
+ stream->ffmpeg_ic->streams[stream->ffmpeg_video_id]->codec->codec_id ==
+ CODEC_ID_VC1 )
+ {
+ // XXX the VC1 codec doesn't seek to key frames so to get previews
+ // we do it ourselves here. The decoder gets messed up if it
+ // doesn't get a SEQ header first so we consider that to be a key frame.
+ uint8_t *pkt = stream->ffmpeg_pkt->data;
+ if ( pkt[0] || pkt[1] || pkt[2] != 1 || pkt[3] != 0x0f )
+ {
+ goto again;
+ }
+ stream->need_keyframe = 0;
+ }
+ ++stream->frames;
+ }
+
+ // if we haven't done it already, compute a conversion factor to go
+ // from the ffmpeg timebase for the stream to HB's 90KHz timebase.
+ double tsconv = stream->ffmpeg_tsconv[stream->ffmpeg_pkt->stream_index];
+ if ( ! tsconv )
+ {
+ AVStream *s = stream->ffmpeg_ic->streams[stream->ffmpeg_pkt->stream_index];
+ tsconv = 90000. * (double)s->time_base.num / (double)s->time_base.den;
+ stream->ffmpeg_tsconv[stream->ffmpeg_pkt->stream_index] = tsconv;
+ }
+
+ buf->start = av_to_hb_pts( stream->ffmpeg_pkt->pts, tsconv );
+ buf->renderOffset = av_to_hb_pts( stream->ffmpeg_pkt->dts, tsconv );
+ if ( buf->renderOffset >= 0 && buf->start == -1 )
+ {
+ buf->start = buf->renderOffset;
+ }
+ av_free_packet( stream->ffmpeg_pkt );
+ return 1;
+}
+
+static int ffmpeg_seek( hb_stream_t *stream, float frac )
+{
+ AVFormatContext *ic = stream->ffmpeg_ic;
+ int64_t pos = (double)ic->duration * (double)frac;
+ if ( pos )
+ {
+ av_seek_frame( ic, -1, pos, 0 );
+ stream->need_keyframe = 1;
+ }
+ else
+ {
+ av_seek_frame( ic, -1, pos, AVSEEK_FLAG_BACKWARD );
+ }
+ return 1;
+}