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);
+/*
+ * 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.
+ */
+static hb_stream_t *current_stream;
+
static inline int check_ps_sync(const uint8_t *buf)
{
return 0;
}
+static void hb_stream_delete( hb_stream_t ** _d )
+{
+ hb_stream_t * d = *_d;
+
+ if( d->file_handle )
+ {
+ fclose( d->file_handle );
+ d->file_handle = NULL;
+ }
+
+ 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])
+ {
+ free(d->ts_packetbuf[i]);
+ d->ts_packetbuf[i] = NULL;
+ }
+ }
+ free( d->path );
+ free( d );
+ *_d = NULL;
+}
+
/***********************************************************************
* hb_stream_open
***********************************************************************
**********************************************************************/
hb_stream_t * hb_stream_open( char * path )
{
- hb_stream_t * d;
-
- d = calloc( sizeof( hb_stream_t ), 1 );
+ if (current_stream)
+ {
+ if (strcmp( path, current_stream->path ) == 0 )
+ {
+ hb_stream_seek( current_stream, 0. );
+ return current_stream;
+ }
+ hb_stream_delete( ¤t_stream );
+ }
+ hb_stream_t *d = calloc( sizeof( hb_stream_t ), 1 );
/* 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. */
d->path = strdup( path );
if (d->path != NULL && hb_stream_get_type( d ) != 0 )
{
+ current_stream = d;
return d;
}
fclose( d->file_handle );
**********************************************************************/
void hb_stream_close( hb_stream_t ** _d )
{
- hb_stream_t * d = *_d;
-
- if( d->file_handle )
- {
- fclose( d->file_handle );
- d->file_handle = NULL;
- }
-
- 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])
- {
- free(d->ts_packetbuf[i]);
- d->ts_packetbuf[i] = NULL;
- }
- }
- free( d->path );
- free( d );
- *_d = NULL;
}
/* when the file was first opened we made entries for all the audio elementary
{
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];
++indx;
}
--stream->ts_number_audio_pids;
// 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)
+ 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);
+ 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;
}
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;
- src_stream->ps_decode_buffer[read_buffer_index].read_pos += 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;
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];
}
else if ((buf[3] & 0xe0) == 0xc0)
{
- audio->id = buf[3];
+ 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];
}
}
fseeko(stream->file_handle, cur_pos, SEEK_SET);
if (stream->stream_type == hb_stream_type_transport)
{
- // Find the audio stream info for this PID
- int i = (audio->id >> 8) & 0xf;
+ // 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)
for (i = stream->ts_number_video_pids; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
{
stream->ts_packetbuf[i] = (unsigned char *) malloc(1024 * 1024);
- stream->ts_streamid[i] = 0xBD; // Stream 1 is AC-3 Audio
}
}
{
set_buf(stream->pmt_info.tablebuf, stream->pmt_info.tablepos, 0);
- unsigned char table_id = get_bits(8);
- get_bits(4);
- unsigned int section_length = get_bits(12);
- stream->pmt_info.section_length = section_length;
-
- unsigned int program_number = get_bits(16);
- stream->pmt_info.program_number = program_number;
- get_bits(2);
- unsigned char version_number = get_bits(5);
- get_bits(1);
- unsigned char section_number = get_bits(8);
- unsigned char last_section_number = get_bits(8);
- get_bits(3);
- unsigned int PCR_PID = get_bits(13);
- stream->pmt_info.PCR_PID = PCR_PID;
- get_bits(4);
- unsigned int program_info_length = get_bits(12);
- stream->pmt_info.program_info_length = program_info_length;
+ get_bits(8); // table_id
+ get_bits(4);
+ unsigned int section_length = get_bits(12);
+ stream->pmt_info.section_length = section_length;
+
+ unsigned int program_number = get_bits(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);
+ stream->pmt_info.PCR_PID = PCR_PID;
+ get_bits(4);
+ unsigned int program_info_length = get_bits(12);
+ stream->pmt_info.program_info_length = program_info_length;
int i=0;
unsigned char *descriptor_buf = (unsigned char *) malloc(program_info_length);
set_buf(tablebuf + pos, tablepos - pos, 0);
unsigned char section_id = get_bits(8);
- get_bits(4);
+ get_bits(4);
unsigned int section_len = get_bits(12);
- unsigned int transport_id = get_bits(16);
- get_bits(2);
- unsigned int version_num = get_bits(5);
- unsigned int current_next = get_bits(1);
- unsigned int section_num = get_bits(8);
- unsigned int last_section = get_bits(8);
+ 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
switch (section_id)
{
get_bits(3); // Reserved
if (pkt_program_num == 0)
{
- unsigned int pkt_network_PID = get_bits(13);
+ get_bits(13); // pkt_network_id
}
else
{
return 1;
}
- int index_of_selected_pid = -1;
- if ((index_of_selected_pid = index_of_video_pid(pid,stream)) < 0)
- {
- if ((index_of_selected_pid = index_of_audio_pid(pid,stream)) < 0)
- {
- hb_log("generate_output_data - cannot find pid 0x%x (%d) in selected audio or video pids", pid, pid);
- return 0;
- }
- else
- {
- stream->ts_packetbuf[curstream][pos + 3] = stream->ts_streamid[stream->ts_number_video_pids + index_of_selected_pid];
- }
- }
- else
- stream->ts_packetbuf[curstream][pos + 3] = stream->ts_streamid[index_of_selected_pid];
+ stream->ts_packetbuf[curstream][pos + 3] =
+ stream->ts_streamid[curstream];
// Packet length..
// Subtract pack size (14) and pes id and len (6) from lenth
// Add pes header for next packet
pos -= 9;
-// make_pes_header(stream->ts_packetbuf[curstream] + pos, (pid == stream->ts_video_pids[0] ? stream->ts_streamid[kVideoStream] : stream->ts_streamid[kAudioStream]), 0, -1, -1);
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)
{
}
}
- stream->ts_packetpos[curstream] = 0;
- stream->ts_streamcont[curstream] = -1;
-
return 0;
}
// Check the next packet to make sure IT starts with a 0x0b77
int plen = 0;
-// if (buf[4 + adapt_len] == 0 && buf[4 + adapt_len + 1] == 0 && // Starting with an mpeg header?
-// buf[4 + adapt_len + 2] == 1 && buf[4 + adapt_len + 3] == 0xBD)
- plen = 9 + buf[4 + adapt_len + 8];
+ plen = 9 + buf[4 + adapt_len + 8];
int pstart = 4 + adapt_len + plen;
if (buf[pstart] != 0x0b || buf[pstart + 1] != 0x77)
{
{
stream->ts_skipbad[i] = 1;
}
- // stream->ts_skipbad[kAudioStream] = stream->ts_skipbad[kVideoStream] = 1;
continue;
}
else if (adaption == 0x2)
adapt_len = buf[4] + 1;
if (adapt_len > 184)
{
- hb_log("hb_ts_stream_decode - Invalid adapt len (was > 183)!");
+ 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;
}
-// stream->ts_skipbad[kAudioStream] = stream->ts_skipbad[kVideoStream] = 1;
}
}
// 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 (pid == stream->ts_audio_pids[0] && start)
- if ((index_of_audio_pid(pid, stream) >= 0) && start)
+ 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;
// Couldn't find an AC3 sync start in this packet.. don't make a PES packet!
if (!sync_found)
{
-// int pos = ftell(fin);
-// error("AC3 packet sync not found in start frame");
-// return 1;
- adapt_len += 9 + buf[4 + adapt_len + 8];
+ adapt_len = 184;
start = 0;
}
}
// Check to see if this is an i_frame (group of picture start)
if (pid == stream->ts_video_pids[0])
{
-// printf("Found Video Start for pid 0x%x\n", pid);
// Look for the Group of Pictures packet.. indicates this is an I-Frame packet..
doing_iframe = 0;
unsigned int strid = 0;
// picture_header, let's see if it's an I-frame
if (i<187)
{
-// int pic_start_code = (buf[i+2] >> 3) & 0x07;
-// hb_log("hb_ts_stream_decode - picture_start_code header value = 0x%x (%d)", pic_start_code, pic_start_code);
// check if picture_coding_type == 1
if ((buf[i+2] & (0x7 << 3)) == (1 << 3))
{
{
// Save the substream id block so we can added it to subsequent blocks
int write_ac3 = 0;
-// if (pid == stream->ts_audio_pids[0] /*&& audstreamid == 0xBD*/)
- if (index_of_audio_pid(pid, stream) >= 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.
}
// Add the payload for this packet to the current buffer
- if (stream->ts_foundfirst[curstream] && (184 - adapt_len) > 0)
+ 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)
+ {
+ hb_log("hb_ts_stream_decode: ts_packetbuf overflow, pos = %d ,"
+ "len = %d", stream->ts_packetpos[curstream],
+ 184 - adapt_len );
+ return;
+ }
memcpy(stream->ts_packetbuf[curstream] + stream->ts_packetpos[curstream], buf + 4 + adapt_len, 184 - adapt_len);
stream->ts_packetpos[curstream] += 184 - adapt_len;
}
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