Index: patched-ffmpeg-mt/libavformat/mpegtsenc.c |
=================================================================== |
--- patched-ffmpeg-mt/libavformat/mpegtsenc.c (revision 41250) |
+++ patched-ffmpeg-mt/libavformat/mpegtsenc.c (working copy) |
@@ -24,6 +24,7 @@ |
#include "libavcodec/mpegvideo.h" |
#include "avformat.h" |
#include "mpegts.h" |
+#include "adts.h" |
/* write DVB SI sections */ |
@@ -59,7 +60,7 @@ |
int onid; |
int tsid; |
uint64_t cur_pcr; |
- int mux_rate; |
+ int mux_rate; ///< set to 1 when VBR |
} MpegTSWrite; |
/* NOTE: 4 bytes must be left at the end for the crc32 */ |
@@ -89,8 +90,8 @@ |
b |= 0x40; |
*q++ = b; |
*q++ = s->pid; |
+ s->cc = (s->cc + 1) & 0xf; |
*q++ = 0x10 | s->cc; |
- s->cc = (s->cc + 1) & 0xf; |
if (first) |
*q++ = 0; /* 0 offset */ |
len1 = TS_PACKET_SIZE - (q - packet); |
@@ -177,6 +178,7 @@ |
int64_t payload_pts; |
int64_t payload_dts; |
uint8_t payload[DEFAULT_PES_PAYLOAD_SIZE]; |
+ ADTSContext *adts; |
} MpegTSWriteStream; |
static void mpegts_write_pat(AVFormatContext *s) |
@@ -382,11 +384,10 @@ |
MpegTSWrite *ts = s->priv_data; |
MpegTSWriteStream *ts_st; |
MpegTSService *service; |
- AVStream *st; |
+ AVStream *st, *pcr_st = NULL; |
AVMetadataTag *title; |
- int i, total_bit_rate; |
+ int i; |
const char *service_name; |
- uint64_t sdt_size, pat_pmt_size, pos; |
ts->tsid = DEFAULT_TSID; |
ts->onid = DEFAULT_ONID; |
@@ -397,19 +398,19 @@ |
DEFAULT_PROVIDER_NAME, service_name); |
service->pmt.write_packet = section_write_packet; |
service->pmt.opaque = s; |
+ service->pmt.cc = 15; |
ts->pat.pid = PAT_PID; |
- ts->pat.cc = 0; |
+ ts->pat.cc = 15; // Initialize at 15 so that it wraps and be equal to 0 for the first packet we write |
ts->pat.write_packet = section_write_packet; |
ts->pat.opaque = s; |
ts->sdt.pid = SDT_PID; |
- ts->sdt.cc = 0; |
+ ts->sdt.cc = 15; |
ts->sdt.write_packet = section_write_packet; |
ts->sdt.opaque = s; |
/* assign pids to each stream */ |
- total_bit_rate = 0; |
for(i = 0;i < s->nb_streams; i++) { |
st = s->streams[i]; |
ts_st = av_mallocz(sizeof(MpegTSWriteStream)); |
@@ -421,70 +422,34 @@ |
ts_st->payload_pts = AV_NOPTS_VALUE; |
ts_st->payload_dts = AV_NOPTS_VALUE; |
ts_st->first_pts_check = 1; |
+ ts_st->cc = 15; |
/* update PCR pid by using the first video stream */ |
if (st->codec->codec_type == CODEC_TYPE_VIDEO && |
- service->pcr_pid == 0x1fff) |
+ service->pcr_pid == 0x1fff) { |
service->pcr_pid = ts_st->pid; |
- if (st->codec->rc_max_rate) |
- total_bit_rate += st->codec->rc_max_rate; |
- else { |
- if (!st->codec->bit_rate) { |
- av_log(s, AV_LOG_WARNING, |
- "stream %d, bit rate is not set, this will cause problems\n", |
- st->index); |
- } |
- total_bit_rate += st->codec->bit_rate; |
+ pcr_st = st; |
} |
- /* PES header size */ |
- if (st->codec->codec_type == CODEC_TYPE_VIDEO || |
- st->codec->codec_type == CODEC_TYPE_SUBTITLE) { |
- /* 1 PES per frame |
- * 19 bytes of PES header |
- * on average a half TS-packet (184/2) of padding-overhead every PES */ |
- total_bit_rate += (19 + 184/2)*8 / av_q2d(st->codec->time_base); |
- } else { |
- /* 1 PES per DEFAULT_PES_PAYLOAD_SIZE bytes of audio data |
- * 14 bytes of PES header |
- * on average a half TS-packet (184/2) of padding-overhead every PES */ |
- total_bit_rate += (14 + 184/2) * |
- st->codec->bit_rate / DEFAULT_PES_PAYLOAD_SIZE; |
+ if (st->codec->codec_id == CODEC_ID_AAC && |
+ st->codec->extradata_size > 0) { |
+ ts_st->adts = av_mallocz(sizeof(*ts_st->adts)); |
+ if (!ts_st->adts) |
+ return AVERROR_NOMEM; |
+ if (ff_adts_decode_extradata(s, ts_st->adts, st->codec->extradata, |
+ st->codec->extradata_size) < 0) |
+ return -1; |
} |
} |
/* if no video stream, use the first stream as PCR */ |
if (service->pcr_pid == 0x1fff && s->nb_streams > 0) { |
- ts_st = s->streams[0]->priv_data; |
+ pcr_st = s->streams[0]; |
+ ts_st = pcr_st->priv_data; |
service->pcr_pid = ts_st->pid; |
} |
- ts->mux_rate = 1; // avoid div by 0 |
+ ts->mux_rate = s->mux_rate ? s->mux_rate : 1; |
- /* write info at the start of the file, so that it will be fast to |
- find them */ |
- pos = url_ftell(s->pb); |
- mpegts_write_sdt(s); |
- sdt_size = url_ftell(s->pb) - pos; |
- pos = url_ftell(s->pb); |
- mpegts_write_pat(s); |
- for(i = 0; i < ts->nb_services; i++) { |
- mpegts_write_pmt(s, ts->services[i]); |
- } |
- pat_pmt_size = url_ftell(s->pb) - pos; |
- |
- if (total_bit_rate <= 8 * 1024) |
- total_bit_rate = 8 * 1024; |
- |
- total_bit_rate += |
- total_bit_rate * 4 / (TS_PACKET_SIZE-4) + /* TS header size */ |
- 1000 * 8 * sdt_size / PAT_RETRANS_TIME + /* SDT size */ |
- 1000 * 8 * pat_pmt_size / SDT_RETRANS_TIME + /* PAT+PMT size */ |
- 1000 * 8 * 8 / PCR_RETRANS_TIME; /* PCR size */ |
- |
- if (s->mux_rate) |
- ts->mux_rate = s->mux_rate; |
- else |
- ts->mux_rate = total_bit_rate; |
- |
+ if (ts->mux_rate > 1) { |
service->pcr_packet_period = (ts->mux_rate * PCR_RETRANS_TIME) / |
(TS_PACKET_SIZE * 8 * 1000); |
ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) / |
@@ -492,17 +457,38 @@ |
ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) / |
(TS_PACKET_SIZE * 8 * 1000); |
+ ts->cur_pcr = av_rescale(s->max_delay, 90000, AV_TIME_BASE); |
+ } else { |
+ /* Arbitrary values, PAT/PMT could be written on key frames */ |
+ ts->sdt_packet_period = 200; |
+ ts->pat_packet_period = 40; |
+ if (pcr_st->codec->codec_type == CODEC_TYPE_AUDIO) { |
+ if (!pcr_st->codec->frame_size) { |
+ av_log(s, AV_LOG_WARNING, "frame size not set\n"); |
+ service->pcr_packet_period = |
+ pcr_st->codec->sample_rate/(10*512); |
+ } else { |
+ service->pcr_packet_period = |
+ pcr_st->codec->sample_rate/(10*pcr_st->codec->frame_size); |
+ } |
+ } else { |
+ // max delta PCR 0.1s |
+ service->pcr_packet_period = |
+ pcr_st->codec->time_base.den/(10*pcr_st->codec->time_base.num); |
+ } |
+ } |
+ |
// output a PCR as soon as possible |
service->pcr_packet_count = service->pcr_packet_period; |
+ ts->pat_packet_count = ts->pat_packet_period-1; |
+ ts->sdt_packet_count = ts->sdt_packet_period-1; |
- av_log(s, AV_LOG_DEBUG, |
- "calculated bitrate %d bps, muxrate %d bps, " |
+ av_log(s, AV_LOG_INFO, |
+ "muxrate %d bps, pcr every %d pkts, " |
"sdt every %d, pat/pmt every %d pkts\n", |
- total_bit_rate, ts->mux_rate, ts->sdt_packet_period, |
- ts->pat_packet_period); |
+ ts->mux_rate, service->pcr_packet_period, |
+ ts->sdt_packet_period, ts->pat_packet_period); |
- // adjust pcr |
- ts->cur_pcr /= ts->mux_rate; |
put_flush_packet(s->pb); |
@@ -622,7 +608,8 @@ |
write_pcr = 0; |
if (ts_st->pid == ts_st->service->pcr_pid) { |
- ts_st->service->pcr_packet_count++; |
+ if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames |
+ ts_st->service->pcr_packet_count++; |
if (ts_st->service->pcr_packet_count >= |
ts_st->service->pcr_packet_period) { |
ts_st->service->pcr_packet_count = 0; |
@@ -630,7 +617,8 @@ |
} |
} |
- if (dts != AV_NOPTS_VALUE && (dts - (int64_t)ts->cur_pcr) > delay) { |
+ if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE && |
+ (dts - (int64_t)ts->cur_pcr) > delay) { |
/* pcr insert gets priority over null packet insert */ |
if (write_pcr) |
mpegts_insert_pcr_only(s, st); |
@@ -647,11 +635,14 @@ |
val |= 0x40; |
*q++ = val; |
*q++ = ts_st->pid; |
+ ts_st->cc = (ts_st->cc + 1) & 0xf; |
*q++ = 0x10 | ts_st->cc | (write_pcr ? 0x20 : 0); |
- ts_st->cc = (ts_st->cc + 1) & 0xf; |
if (write_pcr) { |
// add 11, pcr references the last byte of program clock reference base |
- pcr = ts->cur_pcr + (4+7)*8*90000LL / ts->mux_rate; |
+ if (ts->mux_rate > 1) |
+ pcr = ts->cur_pcr + (4+7)*8*90000LL / ts->mux_rate; |
+ else |
+ pcr = dts - delay; |
if (dts != AV_NOPTS_VALUE && dts < pcr) |
av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n"); |
*q++ = 7; /* AFC length */ |
@@ -788,7 +779,7 @@ |
uint8_t *buf= pkt->data; |
uint8_t *data= NULL; |
MpegTSWriteStream *ts_st = st->priv_data; |
- const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE); |
+ const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE)*2; |
int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE; |
if (pkt->pts != AV_NOPTS_VALUE) |
@@ -803,11 +794,22 @@ |
ts_st->first_pts_check = 0; |
if (st->codec->codec_id == CODEC_ID_H264) { |
+ const uint8_t *p = buf, *buf_end = p+size; |
+ uint32_t state = -1; |
+ |
if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001) { |
- av_log(s, AV_LOG_ERROR, "h264 bitstream malformated\n"); |
+ av_log(s, AV_LOG_ERROR, "h264 bitstream malformated, " |
+ "no startcode found, use -vbsf h264_mp4toannexb\n"); |
return -1; |
} |
- if (pkt->data[4] != 0x09) { // AUD NAL |
+ |
+ do { |
+ p = ff_find_start_code(p, buf_end, &state); |
+ //av_log(s, AV_LOG_INFO, "nal %d\n", state & 0x1f); |
+ } while (p < buf_end && (state & 0x1f) != 9 && |
+ (state & 0x1f) != 5 && (state & 0x1f) != 1); |
+ |
+ if ((state & 0x1f) != 9) { // AUD NAL |
data = av_malloc(pkt->size+6); |
if (!data) |
return -1; |
@@ -818,6 +820,32 @@ |
buf = data; |
size = pkt->size+6; |
} |
+ } else if (st->codec->codec_id == CODEC_ID_AAC) { |
+ if (pkt->size < 2) |
+ return -1; |
+ if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) { |
+ ADTSContext *adts = ts_st->adts; |
+ int new_size; |
+ if (!adts) { |
+ av_log(s, AV_LOG_ERROR, "aac bitstream not in adts format " |
+ "and extradata missing\n"); |
+ return -1; |
+ } |
+ new_size = ADTS_HEADER_SIZE+adts->pce_size+pkt->size; |
+ if ((unsigned)new_size >= INT_MAX) |
+ return -1; |
+ data = av_malloc(new_size); |
+ if (!data) |
+ return AVERROR_NOMEM; |
+ ff_adts_write_frame_header(adts, data, pkt->size, adts->pce_size); |
+ if (adts->pce_size) { |
+ memcpy(data+ADTS_HEADER_SIZE, adts->pce_data, adts->pce_size); |
+ adts->pce_size = 0; |
+ } |
+ memcpy(data+ADTS_HEADER_SIZE+adts->pce_size, pkt->data, pkt->size); |
+ buf = data; |
+ size = new_size; |
+ } |
} |
if (st->codec->codec_type != CODEC_TYPE_AUDIO) { |