#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
+typedef enum {
+ hb_stream_type_unknown = 0,
+ hb_stream_type_transport,
+ hb_stream_type_program
+} 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 */
+
+ 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_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) */
+
+ /*
+ * 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.
+ */
+ int16_t ts_video_pids[kMaxNumberVideoPIDS];
+ int16_t ts_audio_pids[kMaxNumberAudioPIDS];
+
+ uint8_t ts_number_video_pids;
+ uint8_t ts_number_audio_pids;
+
+ uint8_t ts_streamid[kMaxNumberDecodeStreams];
+ uint8_t ts_video_stream_type[kMaxNumberDecodeStreams];
+ uint8_t ts_audio_stream_type[kMaxNumberDecodeStreams];
+
+ char *path;
+ FILE *file_handle;
+ hb_stream_type_t stream_type;
+ int opentype;
+
+ 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);
/*
* 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_stream_t *current_stream;
+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 );
+}
static inline int check_ps_sync(const uint8_t *buf)
{
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;
- }
- }
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, int opentype )
{
- 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 ( opentype == 1 )
{
+ /* opening to read - we must have saved state */
+ if ( ss == NULL )
+ {
+ hb_log( "hb_stream_open: error: re-opening %s but no scan state", path );
+ fclose( f );
+ free( d );
+ return NULL;
+ }
+ /*
+ * copy the saved state since we might be encoding the same stream
+ * multiple times.
+ */
+ memcpy( d, ss, sizeof(*d) );
+ d->file_handle = f;
+ d->opentype = opentype;
d->path = strdup( path );
- if (d->path != NULL && hb_stream_get_type( d ) != 0 )
+
+ if ( d->stream_type == hb_stream_type_transport )
{
- current_stream = d;
- return d;
+ 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. );
}
- fclose( d->file_handle );
- if (d->path)
- free( d->path );
+ 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->opentype = opentype;
+ d->path = strdup( path );
+ if (d->path != NULL && hb_stream_get_type( d ) != 0 )
+ {
+ return d;
+ }
+ fclose( d->file_handle );
+ 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->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->opentype == 0 )
+ {
+ 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_audio_stream_type[1 + indx] = stream->ts_audio_stream_type[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
***********************************************************************
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;
+ }
}
else
{
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->ps_decode_buffer[read_buffer_index].len == 0)
- {
- hb_log("hb_stream_read - buffer after decode has zero length data");
- return 0;
- }
-
- // 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;
-
- return 1;
- }
- }
- else
- return 0;
+ if ( src_stream->stream_type == hb_stream_type_program )
+ {
+ size_t amt_read = fread(b->data, HB_DVD_READ_BUFFER_SIZE, 1,
+ src_stream->file_handle);
+ return (amt_read > 0);
+ }
+ return hb_ts_stream_decode( src_stream, b->data );
}
/***********************************************************************
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))
- {
- done = 1;
- // 'Put Back' the data we've just read (up to this point)
- hb_stream_put_back(src_stream, i);
- }
- }
- }
- else
- done = 1; // End of data;
- }
- hb_buffer_close(&buf);
return 1;
}
+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.
+ */
+ snprintf( audio->config.lang.description,
+ sizeof( audio->config.lang.description ), "%s (%s)",
+ strlen(lang->native_name) ? lang->native_name : lang->eng_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" : "LPCM" );
+ 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,
int aud_pid_index)
{
if (buf[3] == 0xbd)
{
audio->id = 0x80bd | (aud_pid_index << 8);
- audio->codec = HB_ACODEC_AC3;
+ audio->config.in.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],
+ stream->ts_audio_stream_type[1 + 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];
+ stream->ts_audio_stream_type[1 + aud_pid_index] = 0x81;
+ stream->ts_streamid[1 + aud_pid_index] = buf[3];
}
else if ((buf[3] & 0xe0) == 0xc0)
{
audio->id = buf[3] | aud_pid_index;
- audio->codec = HB_ACODEC_MPGA;
+ audio->config.in.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],
+ stream->ts_audio_stream_type[1 + 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];
+ stream->ts_audio_stream_type[1 + aud_pid_index] = 0x03;
+ stream->ts_streamid[1 + aud_pid_index] = buf[3];
}
}
fseeko(stream->file_handle, cur_pos, SEEK_SET);
- if (! audio->codec)
+ if ( audio->config.in.codec )
+ {
+ set_audio_description( audio,
+ lang_for_code( stream->a52_info[aud_pid_index].lang_code ) );
+ }
+ 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]);
+ stream->ts_audio_stream_type[1 + aud_pid_index]);
}
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_stream_update_audio
- ***********************************************************************
- *
- **********************************************************************/
-void hb_stream_update_audio(hb_stream_t *stream, hb_audio_t *audio)
-{
- iso639_lang_t *lang;
-
- if (stream->stream_type == hb_stream_type_transport)
- {
- // 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;
-
- }
- else
- {
- // XXX should try to get language code from the AC3 bitstream
- lang = lang_for_code(0x0000);
- }
-
- if (!audio->input_channel_layout)
- {
- 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);
- }
- 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);
- }
-}
-
-
-/***********************************************************************
* hb_ts_stream_init
***********************************************************************
*
**********************************************************************/
- #define PS_DECODE_BUFFER_SIZE ( 1024 * 1024 * 4)
static void hb_ts_stream_init(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;
- }
+ int i;
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;
+ stream->ts_video_pids[0] = -1;
+ for ( i = 0; i < stream->ts_number_audio_pids; i++ )
+ {
+ stream-> ts_audio_pids[i] = -1;
+ }
// Find the audio and video pids in the stream
hb_ts_stream_find_pids(stream);
- 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
- }
+ stream->ts_streamid[0] = 0xE0; // stream 0 must be video
- for (i = stream->ts_number_video_pids; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
+ for (i = 0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
{
- stream->ts_packetbuf[i] = (unsigned char *) malloc(1024 * 1024);
+ // demuxing buffer for TS to PS conversion
+ stream->ts_buf[i] = malloc( HB_DVD_READ_BUFFER_SIZE );
}
}
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);
+ memset(bb->buf, 0, bufsize);
}
-static inline int buf_size()
+static inline int buf_size(bitbuf_t *bb)
{
- return bitpos >> 3;
-}
-
-static inline void set_bits(unsigned int val, int bits)
-{
- 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;
}
}
}
}
+/*
+ * Get the name of the stream from the type - thanks to VLC for this.
+ */
+static const char *get_stream_name (unsigned char stream_type)
+{
+ switch( stream_type )
+ {
+ case 0x01: /* MPEG-1 video */
+ case 0x02: /* MPEG-2 video */
+ case 0x80: /* MPEG-2 MOTO video */
+ return("MPEG 1/2 Video");
+ break;
+ case 0x03: /* MPEG-1 audio */
+ case 0x04: /* MPEG-2 audio */
+ return("MPEG Audio");
+ break;
+ case 0x11: /* MPEG4 (audio) */
+ case 0x0f: /* ISO/IEC 13818-7 Audio with ADTS transport syntax */
+ return("MPEG-4 Audio");
+ break;
+ case 0x10: /* MPEG4 (video) */
+ return("MPEG-4 Video");
+ break;
+ case 0x1B: /* H264 <- check transport syntax/needed descriptor */
+ return("H.264 Video");
+ break;
+
+ case 0x81: /* A52 (audio) */
+ return("A52/AC-3 Audio");
+ break;
+ case 0x82: /* DVD_SPU (sub) */
+ return("Subtitle");
+ break;
+ case 0x83: /* LPCM (audio) */
+ return("LPCM Audio");
+ break;
+ case 0x84: /* SDDS (audio) */
+ return("SDDS Audio");
+ break;
+ case 0x85: /* DTS (audio) */
+ return("DTS Audio");
+ break;
+
+ case 0x91: /* A52 vls (audio) */
+ return("A52b/AC-3 Audio");
+ break;
+ case 0x92: /* DVD_SPU vls (sub) */
+ return("Subtitle");
+ break;
+
+ case 0x94: /* SDDS (audio) */
+ return("SDDS Audio");
+ break;
+
+ case 0xa0: /* MSCODEC vlc (video) (fixed later) */
+ return("MSCODEC Video");
+ break;
+
+ case 0x06: /* PES_PRIVATE (fixed later) */
+ case 0x12: /* MPEG-4 generic (sub/scene/...) (fixed later) */
+ case 0xEA: /* Privately managed ES (VC-1) (fixed later */
+ default:
+ return("Other");
+ break;
+ }
+}
+
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);
+ 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(8);
+ ES_info_buf[i] = get_bits(&bb, 8);
}
- if (stream_type == 0x02)
+
+ if (stream_type == 0x02 || stream_type == 0x10 || stream_type == 0x1B)
{
- if (stream->ts_number_video_pids <= kMaxNumberVideoPIDS)
+ /* MPEG-2/MPEG-4/H.264 */
+ if (stream->ts_number_video_pids <= kMaxNumberVideoPIDS)
stream->ts_number_video_pids++;
- stream->ts_video_pids[stream->ts_number_video_pids-1] = elementary_PID;
+ stream->ts_video_pids[stream->ts_number_video_pids-1] = elementary_PID;
+ stream->ts_video_stream_type[stream->ts_number_video_pids-1] = stream_type;
}
- 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);
- }
+ 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[1 + i] = stream_type;
+
+ if (ES_info_length > 0)
+ {
+ decode_element_descriptors(stream, i, ES_info_buf, ES_info_length);
+ }
}
-
+
cur_pos += 5 /* stream header */ + ES_info_length;
free(ES_info_buf);
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)
+static void hb_ts_stream_find_pids(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;
-}
+ unsigned char buf[188];
-static int fwrite64(void* buf, int elsize, int elnum, hb_stream_t* stream)
-{
- int size = elsize;
- if (elnum > 1)
- size *= elnum;
+ // align to first packet
+ align_to_next_packet(stream->file_handle);
- int written = 0;
- int current_write_index = stream->ps_current_write_buffer_index;
+ // 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
- 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
+ int bytesReadInPacket = 0;
+ for (;;)
{
- 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))
+ // Try to read packet..
+ int bytesRead;
+ if ((bytesRead = fread(buf+bytesReadInPacket, 1, 188-bytesReadInPacket, stream->file_handle)) != 188-bytesReadInPacket)
{
- // 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;
-}
+ if (bytesRead < 0)
+ bytesRead = 0;
+ bytesReadInPacket += bytesRead;
-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;
+ hb_log("hb_ts_stream_find_pids - end of file");
+ break;
}
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);
-
- // 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;
-
- hb_log("hb_ts_stream_find_pids - end of file");
- break;
- }
- else
- {
- bytesReadInPacket = 0;
+ 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;
+ off_t pos = ftello(stream->file_handle) - 188;
+ off_t pos2 = align_to_next_packet(stream->file_handle);
+ if ( pos2 == 0 )
+ {
+ hb_log( "hb_ts_stream_find_pids: eof while re-establishing sync @ %lld",
+ pos );
+ break;
+ }
+ hb_log("hb_ts_stream_decode: sync lost @%lld, regained after %lld bytes",
+ pos, pos2 );
continue;
}
int i=0;
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 (%d) [Type %s (0x%x)]",
+ stream->ts_video_pids[i], stream->ts_video_pids[i],
+ get_stream_name(stream->ts_video_stream_type[i]),
+ stream->ts_video_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 (%d) [Type %s (0x%x)]",
+ stream->ts_audio_pids[i], stream->ts_audio_pids[i],
+ get_stream_name(stream->ts_audio_stream_type[i]),
+ stream->ts_audio_stream_type[i] );
}
}
-int index_of_video_pid(int pid, hb_stream_t *stream)
+
+static void fwrite64( hb_stream_t *stream, void *buf, int size )
{
- int found_pid = -1, i = 0;
+ 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;
+}
- 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 write_pack(hb_stream_t* stream, uint64_t time, int stuffing)
+{
+ uint8_t buf[24];
+
+ buf[0] = 0x00; // pack id
+ buf[1] = 0x00;
+ buf[2] = 0x01;
+ buf[3] = 0xba;
+
+ 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 );
+
+ buf[9] = 0x01; // SCR extension
+
+ buf[10] = 384000 >> (22 - 8); // program mux rate
+ buf[11] = (uint8_t)( 384000 >> (22 - 16) );
+ buf[12] = (uint8_t)( 384000 << 2 ) | 0x03;
+
+ buf[13] = 0xf8 | stuffing;
+
+ int i;
+ for (i = 0; i < stuffing; ++i )
+ buf[14+i] = 0xff;
+
+ fwrite64(stream, buf, 14 + stuffing );
}
-int index_of_audio_pid(int pid, hb_stream_t *stream)
+static void pad_buffer(hb_stream_t* stream, int pad)
{
- int i = 0, found_pid = -1;
+ pad -= 6;
- for (i = 0; (i < stream->ts_number_audio_pids) && (found_pid < 0); i++)
- {
- if (pid == stream->ts_audio_pids[i])
- found_pid = i;
+ uint8_t buf[6];
+ buf[0] = 0;
+ buf[1] = 0;
+ buf[2] = 0;
+ buf[3] = 0xbe;
+ buf[4] = pad >> 8;
+ buf[5] = pad;
+
+ fwrite64(stream, buf, 6);
+
+ buf[0] = 0xff;
+ while ( --pad >= 0 )
+ {
+ fwrite64(stream, buf, 1);
}
- return found_pid;
}
-int index_of_pid(int pid, hb_stream_t *stream)
+static void make_pes_header(hb_stream_t* stream, int len, uint8_t streamid)
+{
+ uint8_t buf[9];
+
+ memset(buf, 0, sizeof(buf) );
+ buf[2] = 1;
+ buf[3] = streamid;
+ buf[4] = ( len + 3 ) >> 8;
+ buf[5] = len + 3;
+ buf[6] = 0x88;
+
+ 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 it substream header.
+ len = 14 + stream->ts_pos[curstream];
+ if ( stream->ts_audio_stream_type[curstream] == 0x81)
+ {
+ 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_audio_stream_type[curstream] == 0x81)
+ {
+ // 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_audio_stream_type[curstream] != 0x81)
+ {
+ 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 void ts_warn_helper( hb_stream_t *stream, char *log, va_list args )
{
- int found_pid = -1;
+ // 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];
- if ((found_pid = index_of_video_pid(pid, stream)) >= 0)
- return found_pid;
+ vsnprintf( msg, sizeof(msg), log, args );
- if ((found_pid = index_of_audio_pid(pid, stream)) >= 0)
- return found_pid;
+ 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;
+ }
+}
- return found_pid;
+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 int isIframe( const uint8_t *buf, int adapt_len )
+{
+ // Look for the Group of Pictures packet
+ int i;
+ uint32_t strid = 0;
+
+ for (i = 4 + adapt_len; i < 188; i++)
+ {
+ strid = (strid << 8) | buf[i];
+ switch ( strid )
+ {
+ case 0x000001B8: // group_start_code (GOP header)
+ case 0x000001B3: // sequence_header code
+ return 1;
+
+ case 0x00000100: // 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;
+ }
+ }
+ // didn't find an I frame
+ return 0;
}
/***********************************************************************
***********************************************************************
*
**********************************************************************/
-static void hb_ts_stream_decode(hb_stream_t *stream)
+static int hb_ts_stream_decode( hb_stream_t *stream, uint8_t *obuf )
{
- unsigned char buf[188];
+ int64_t pcr = stream->ts_lastpcr;
int curstream;
- int doing_iframe;
+ uint8_t buf[188];
- int i = 0;
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- stream->ts_skipbad[i] = 0;
- }
-
- doing_iframe = 0;
+ /*
+ * 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;
- if ((stream->ts_number_video_pids == 0) || (stream->ts_number_audio_pids == 0))
+ // spin until we get a packet of data from some stream or hit eof
+ while ( 1 )
{
- hb_log("hb_ts_stream_decode - no Video or Audio PID selected, cannot decode transport stream");
- return;
- }
-
- int curr_write_buffer_index = stream->ps_current_write_buffer_index;
-
- // 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)
+ 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;
+ return 0;
}
+ /* This next section validates the packet */
+
// Check sync byte
if ((buf[0] != 0x47) && (buf[0] != 0x72) && (buf[0] != 0x29))
{
{
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;
+ return 0;
}
- 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;
- }
+ ts_warn( stream, "hb_ts_stream_decode: sync lost @%lld, "
+ "regained after %lld bytes", pos, pos2 );
continue;
}
- // Get pid
- int pid = (((buf[1] & 0x1F) << 8) | buf[2]) & 0x1FFF;
-
- // 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;
- }
- }
- else
- curstream = index_of_selected_pid;
-
- // Get start code
- int start;
- start = (buf[1] & 0x40) != 0;
-
- 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 ( pcr == -1 )
+ {
+ // don't accumulate data until we get a pcr
+ continue;
}
- // Found a random access point (now we can start a frame/audio packet..)
- if (start)
+ // 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;
+
+ 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) &&
+ (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( 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;
- }
-
- // 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 video yet, check to see if this is an
+ // i_frame (group of picture start)
+ if ( curstream == 0 )
+ {
+ if ( !stream->ts_foundfirst[0] )
+ {
+ if ( !isIframe( buf, adapt_len ) )
+ {
+ // didn't find an I frame
+ continue;
+ }
+ stream->ts_foundfirst[0] = 1;
+ }
+ ++stream->frames;
+ }
+ 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;
}
}
}
**********************************************************************/
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->last_error_frame = -10000;
+ stream->last_error_count = 0;
align_to_next_packet(stream->file_handle);
}
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