---
libavformat/mpegenc.c | 553 ++++++++++++++++++++++++++------------------------
1 file changed, 283 insertions(+), 270 deletions(-)
diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c
index 13d5b03..375915e 100644
--- a/libavformat/mpegenc.c
+++ b/libavformat/mpegenc.c
@@ -103,11 +103,11 @@ static int put_pack_header(AVFormatContext *ctx,
} else {
put_bits(&pb, 4, 0x2);
}
- put_bits(&pb, 3, (uint32_t)((timestamp >> 30) & 0x07));
+ put_bits(&pb, 3, (uint32_t)((timestamp >> 30) & 0x07));
put_bits(&pb, 1, 1);
put_bits(&pb, 15, (uint32_t)((timestamp >> 15) & 0x7fff));
put_bits(&pb, 1, 1);
- put_bits(&pb, 15, (uint32_t)((timestamp ) & 0x7fff));
+ put_bits(&pb, 15, (uint32_t)((timestamp) & 0x7fff));
put_bits(&pb, 1, 1);
if (s->is_mpeg2) {
/* clock extension */
@@ -188,13 +188,14 @@ static int put_system_header(AVFormatContext *ctx,
uint8_t *buf,int only_for_str
int P_STD_max_mpeg_audio = 0;
int P_STD_max_mpeg_PS1 = 0;
- for(i=0;i<ctx->nb_streams;i++) {
+ for (i = 0; i < ctx->nb_streams; i++) {
StreamInfo *stream = ctx->streams[i]->priv_data;
id = stream->id;
if (id == 0xbd && stream->max_buffer_size > P_STD_max_mpeg_PS1) {
P_STD_max_mpeg_PS1 = stream->max_buffer_size;
- } else if (id >= 0xc0 && id <= 0xc7 && stream->max_buffer_size >
P_STD_max_mpeg_audio) {
+ } else if (id >= 0xc0 && id <= 0xc7 && stream->max_buffer_size >
+ P_STD_max_mpeg_audio) {
P_STD_max_mpeg_audio = stream->max_buffer_size;
} else if (id == 0xe0 && stream->max_buffer_size >
P_STD_max_video) {
P_STD_max_video = stream->max_buffer_size;
@@ -226,20 +227,17 @@ static int put_system_header(AVFormatContext *ctx,
uint8_t *buf,int only_for_str
put_bits(&pb, 2, 3);
put_bits(&pb, 1, 1);
put_bits(&pb, 13, 2);
- }
- else {
+ } else {
/* audio stream info */
private_stream_coded = 0;
- for(i=0;i<ctx->nb_streams;i++) {
+ for (i = 0; i < ctx->nb_streams; i++) {
StreamInfo *stream = ctx->streams[i]->priv_data;
-
/* For VCDs, only include the stream info for the stream
- that the pack which contains this system belongs to.
- (see VCD standard p. IV-7) */
- if ( !s->is_vcd || stream->id==only_for_stream_id
- || only_for_stream_id==0) {
-
+ * that the pack which contains this system belongs to.
+ * (see VCD standard p. IV-7) */
+ if (!s->is_vcd || stream->id == only_for_stream_id ||
+ only_for_stream_id == 0) {
id = stream->id;
if (id < 0xc0) {
/* special case for private streams (AC-3 uses that) */
@@ -248,7 +246,7 @@ static int put_system_header(AVFormatContext *ctx, uint8_t
*buf,int only_for_str
private_stream_coded = 1;
id = 0xbd;
}
- put_bits(&pb, 8, id); /* stream ID */
+ put_bits(&pb, 8, id); /* stream ID */
put_bits(&pb, 2, 3);
if (id < 0xe0) {
/* audio */
@@ -279,11 +277,11 @@ static int get_system_header_size(AVFormatContext *ctx)
MpegMuxContext *s = ctx->priv_data;
if (s->is_dvd)
- return 18; // DVD-Video system headers are 18 bytes fixed length.
+ return 18; // DVD-Video system headers are 18 bytes fixed length.
buf_index = 12;
private_stream_coded = 0;
- for(i=0;i<ctx->nb_streams;i++) {
+ for (i = 0; i < ctx->nb_streams; i++) {
stream = ctx->streams[i]->priv_data;
if (stream->id < 0xc0) {
if (private_stream_coded)
@@ -305,14 +303,14 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
int video_bitrate;
s->packet_number = 0;
- s->is_vcd = (CONFIG_MPEG1VCD_MUXER && ctx->oformat ==
&ff_mpeg1vcd_muxer);
- s->is_svcd = (CONFIG_MPEG2SVCD_MUXER && ctx->oformat ==
&ff_mpeg2svcd_muxer);
- s->is_mpeg2 = ((CONFIG_MPEG2VOB_MUXER && ctx->oformat ==
&ff_mpeg2vob_muxer) ||
- (CONFIG_MPEG2DVD_MUXER && ctx->oformat ==
&ff_mpeg2dvd_muxer) ||
- (CONFIG_MPEG2SVCD_MUXER && ctx->oformat ==
&ff_mpeg2svcd_muxer));
- s->is_dvd = (CONFIG_MPEG2DVD_MUXER && ctx->oformat ==
&ff_mpeg2dvd_muxer);
-
- if(ctx->packet_size) {
+ s->is_vcd = (CONFIG_MPEG1VCD_MUXER && ctx->oformat ==
&ff_mpeg1vcd_muxer);
+ s->is_svcd = (CONFIG_MPEG2SVCD_MUXER && ctx->oformat ==
&ff_mpeg2svcd_muxer);
+ s->is_mpeg2 = (CONFIG_MPEG2VOB_MUXER && ctx->oformat ==
&ff_mpeg2vob_muxer) ||
+ (CONFIG_MPEG2DVD_MUXER && ctx->oformat ==
&ff_mpeg2dvd_muxer) ||
+ (CONFIG_MPEG2SVCD_MUXER && ctx->oformat ==
&ff_mpeg2svcd_muxer);
+ s->is_dvd = (CONFIG_MPEG2DVD_MUXER && ctx->oformat ==
&ff_mpeg2dvd_muxer);
+
+ if (ctx->packet_size) {
if (ctx->packet_size < 20 || ctx->packet_size > (1 << 23) + 10) {
av_log(ctx, AV_LOG_ERROR, "Invalid packet size %d\n",
ctx->packet_size);
@@ -321,22 +319,24 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
s->packet_size = ctx->packet_size;
} else
s->packet_size = 2048;
- if (ctx->max_delay < 0) /* Not set by the caller */
+ if (ctx->max_delay < 0) /* Not set by the caller */
ctx->max_delay = 0;
s->vcd_padding_bytes_written = 0;
- s->vcd_padding_bitrate=0;
+ s->vcd_padding_bitrate = 0;
s->audio_bound = 0;
s->video_bound = 0;
- mpa_id = AUDIO_ID;
- ac3_id = AC3_ID;
- dts_id = DTS_ID;
- mpv_id = VIDEO_ID;
- mps_id = SUB_ID;
+
+ mpa_id = AUDIO_ID;
+ ac3_id = AC3_ID;
+ dts_id = DTS_ID;
+ mpv_id = VIDEO_ID;
+ mps_id = SUB_ID;
lpcm_id = LPCM_ID;
- for(i=0;i<ctx->nb_streams;i++) {
- st = ctx->streams[i];
+
+ for (i = 0; i < ctx->nb_streams; i++) {
+ st = ctx->streams[i];
stream = av_mallocz(sizeof(StreamInfo));
if (!stream)
goto fail;
@@ -344,15 +344,15 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
avpriv_set_pts_info(st, 64, 1, 90000);
- switch(st->codec->codec_type) {
+ switch (st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
- if (st->codec->codec_id == AV_CODEC_ID_AC3) {
+ if (st->codec->codec_id == AV_CODEC_ID_AC3) {
stream->id = ac3_id++;
} else if (st->codec->codec_id == AV_CODEC_ID_DTS) {
stream->id = dts_id++;
} else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
stream->id = lpcm_id++;
- for(j = 0; j < 4; j++) {
+ for (j = 0; j < 4; j++) {
if (lpcm_freq_tab[j] == st->codec->sample_rate)
break;
}
@@ -363,66 +363,67 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
stream->lpcm_header[0] = 0x0c;
stream->lpcm_header[1] = (st->codec->channels - 1) | (j << 4);
stream->lpcm_header[2] = 0x80;
- stream->lpcm_align = st->codec->channels * 2;
+ stream->lpcm_align = st->codec->channels * 2;
} else {
stream->id = mpa_id++;
}
/* This value HAS to be used for VCD (see VCD standard, p. IV-7).
- Right now it is also used for everything else.*/
+ * Right now it is also used for everything else.*/
stream->max_buffer_size = 4 * 1024;
s->audio_bound++;
break;
case AVMEDIA_TYPE_VIDEO:
stream->id = mpv_id++;
if (st->codec->rc_buffer_size)
- stream->max_buffer_size = 6*1024 + st->codec->rc_buffer_size/8;
+ stream->max_buffer_size = 6 * 1024 + st->codec->rc_buffer_size
/ 8;
else {
- av_log(ctx, AV_LOG_WARNING, "VBV buffer size not set, muxing
may fail\n");
- stream->max_buffer_size = 230*1024; //FIXME this is probably
too small as default
+ av_log(ctx, AV_LOG_WARNING,
+ "VBV buffer size not set, muxing may fail\n");
+ stream->max_buffer_size = 230 * 1024; //FIXME this is
probably too small as default
}
s->video_bound++;
break;
case AVMEDIA_TYPE_SUBTITLE:
- stream->id = mps_id++;
+ stream->id = mps_id++;
stream->max_buffer_size = 16 * 1024;
break;
default:
return -1;
}
- stream->fifo= av_fifo_alloc(16);
+ stream->fifo = av_fifo_alloc(16);
if (!stream->fifo)
goto fail;
}
- bitrate = 0;
+ bitrate = 0;
audio_bitrate = 0;
video_bitrate = 0;
- for(i=0;i<ctx->nb_streams;i++) {
+ for (i = 0; i < ctx->nb_streams; i++) {
int codec_rate;
- st = ctx->streams[i];
- stream = (StreamInfo*) st->priv_data;
+ st = ctx->streams[i];
+ stream = (StreamInfo *)st->priv_data;
- if(st->codec->rc_max_rate || stream->id==VIDEO_ID)
- codec_rate= st->codec->rc_max_rate;
+ if (st->codec->rc_max_rate || stream->id == VIDEO_ID)
+ codec_rate = st->codec->rc_max_rate;
else
- codec_rate= st->codec->bit_rate;
+ codec_rate = st->codec->bit_rate;
- if(!codec_rate)
- codec_rate= (1<<21)*8*50/ctx->nb_streams;
+ if (!codec_rate)
+ codec_rate = (1 << 21) * 8 * 50 / ctx->nb_streams;
bitrate += codec_rate;
if ((stream->id & 0xe0) == AUDIO_ID)
audio_bitrate += codec_rate;
- else if (stream->id==VIDEO_ID)
+ else if (stream->id == VIDEO_ID)
video_bitrate += codec_rate;
}
if (!s->mux_rate) {
/* we increase slightly the bitrate to take into account the
- headers. XXX: compute it exactly */
- bitrate += bitrate / 20;
- bitrate += 10000;
+ * headers. XXX: compute it exactly */
+ bitrate += bitrate / 20;
+ bitrate += 10000;
s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50);
}
@@ -430,23 +431,23 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
double overhead_rate;
/* The VCD standard mandates that the mux_rate field is 3528
- (see standard p. IV-6).
- The value is actually "wrong", i.e. if you calculate
- it using the normal formula and the 75 sectors per second transfer
- rate you get a different value because the real pack size is 2324,
- not 2352. But the standard explicitly specifies that the mux_rate
- field in the header must have this value.*/
-// s->mux_rate=2352 * 75 / 50; /* = 3528*/
+ * (see standard p. IV-6).
+ * The value is actually "wrong", i.e. if you calculate
+ * it using the normal formula and the 75 sectors per second transfer
+ * rate you get a different value because the real pack size is 2324,
+ * not 2352. But the standard explicitly specifies that the mux_rate
+ * field in the header must have this value.*/
+ // s->mux_rate=2352 * 75 / 50; /* = 3528*/
/* The VCD standard states that the muxed stream must be
- exactly 75 packs / second (the data rate of a single speed cdrom).
- Since the video bitrate (probably 1150000 bits/sec) will be below
- the theoretical maximum we have to add some padding packets
- to make up for the lower data rate.
- (cf. VCD standard p. IV-6 )*/
+ * exactly 75 packs / second (the data rate of a single speed cdrom).
+ * Since the video bitrate (probably 1150000 bits/sec) will be below
+ * the theoretical maximum we have to add some padding packets
+ * to make up for the lower data rate.
+ * (cf. VCD standard p. IV-6 )*/
/* Add the header overhead to the data rate.
- 2279 data bytes per audio pack, 2294 data bytes per video pack*/
+ * 2279 data bytes per audio pack, 2294 data bytes per video pack*/
overhead_rate = ((audio_bitrate / 8.0) / 2279) * (2324 - 2279);
overhead_rate += ((video_bitrate / 8.0) / 2294) * (2324 - 2294);
overhead_rate *= 8;
@@ -464,62 +465,58 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
/* the above seems to make pack_header_freq zero sometimes */
if (s->pack_header_freq == 0)
- s->pack_header_freq = 1;
+ s->pack_header_freq = 1;
if (s->is_mpeg2)
/* every 200 packets. Need to look at the spec. */
s->system_header_freq = s->pack_header_freq * 40;
else if (s->is_vcd)
/* the standard mandates that there are only two system headers
- in the whole file: one in the first packet of each stream.
- (see standard p. IV-7 and IV-8) */
+ * in the whole file: one in the first packet of each stream.
+ * (see standard p. IV-7 and IV-8) */
s->system_header_freq = 0x7fffffff;
else
s->system_header_freq = s->pack_header_freq * 5;
- for(i=0;i<ctx->nb_streams;i++) {
- stream = ctx->streams[i]->priv_data;
+ for (i = 0; i < ctx->nb_streams; i++) {
+ stream = ctx->streams[i]->priv_data;
stream->packet_number = 0;
}
s->system_header_size = get_system_header_size(ctx);
s->last_scr = 0;
return 0;
- fail:
- for(i=0;i<ctx->nb_streams;i++) {
+fail:
+ for (i = 0; i < ctx->nb_streams; i++)
av_free(ctx->streams[i]->priv_data);
- }
return AVERROR(ENOMEM);
}
static inline void put_timestamp(AVIOContext *pb, int id, int64_t timestamp)
{
- avio_w8(pb,
- (id << 4) |
- (((timestamp >> 30) & 0x07) << 1) |
- 1);
+ avio_w8(pb, (id << 4) | (((timestamp >> 30) & 0x07) << 1) | 1);
avio_wb16(pb, (uint16_t)((((timestamp >> 15) & 0x7fff) << 1) | 1));
avio_wb16(pb, (uint16_t)((((timestamp ) & 0x7fff) << 1) | 1));
}
-
/* return the number of padding bytes that should be inserted into
the multiplexed stream.*/
static int get_vcd_padding_size(AVFormatContext *ctx, int64_t pts)
{
MpegMuxContext *s = ctx->priv_data;
- int pad_bytes = 0;
+ int pad_bytes = 0;
- if (s->vcd_padding_bitrate > 0 && pts!=AV_NOPTS_VALUE)
- {
+ if (s->vcd_padding_bitrate > 0 && pts != AV_NOPTS_VALUE) {
int64_t full_pad_bytes;
- full_pad_bytes = (int64_t)((s->vcd_padding_bitrate * (pts / 90000.0))
/ 8.0); //FIXME this is wrong
- pad_bytes = (int) (full_pad_bytes - s->vcd_padding_bytes_written);
+ //FIXME this is wrong
+ full_pad_bytes =
+ (int64_t)((s->vcd_padding_bitrate * (pts / 90000.0)) / 8.0);
+ pad_bytes = (int)(full_pad_bytes - s->vcd_padding_bytes_written);
- if (pad_bytes<0)
+ if (pad_bytes < 0)
/* might happen if we have already padded to a later timestamp.
This
- can occur if another stream has already advanced further.*/
- pad_bytes=0;
+ * can occur if another stream has already advanced further.*/
+ pad_bytes = 0;
}
return pad_bytes;
@@ -527,7 +524,8 @@ static int get_vcd_padding_size(AVFormatContext *ctx,
int64_t pts)
/* Write an MPEG padding packet header. */
-static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb,int
packet_bytes)
+static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb,
+ int packet_bytes)
{
MpegMuxContext *s = ctx->priv_data;
int i;
@@ -540,19 +538,20 @@ static void put_padding_packet(AVFormatContext *ctx,
AVIOContext *pb,int packet_
} else
packet_bytes -= 6;
- for(i=0;i<packet_bytes;i++)
+ for (i = 0; i < packet_bytes; i++)
avio_w8(pb, 0xff);
}
-static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len){
- int nb_frames=0;
- PacketDesc *pkt_desc= stream->premux_packet;
+static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len)
+{
+ int nb_frames = 0;
+ PacketDesc *pkt_desc = stream->premux_packet;
- while(len>0){
- if(pkt_desc->size == pkt_desc->unwritten_size)
+ while (len > 0) {
+ if (pkt_desc->size == pkt_desc->unwritten_size)
nb_frames++;
- len -= pkt_desc->unwritten_size;
- pkt_desc= pkt_desc->next;
+ len -= pkt_desc->unwritten_size;
+ pkt_desc = pkt_desc->next;
}
return nb_frames;
@@ -560,9 +559,9 @@ static int get_nb_frames(AVFormatContext *ctx, StreamInfo
*stream, int len){
/* flush the packet on stream stream_index */
static int flush_packet(AVFormatContext *ctx, int stream_index,
- int64_t pts, int64_t dts, int64_t scr, int
trailer_size)
+ int64_t pts, int64_t dts, int64_t scr, int
trailer_size)
{
- MpegMuxContext *s = ctx->priv_data;
+ MpegMuxContext *s = ctx->priv_data;
StreamInfo *stream = ctx->streams[stream_index]->priv_data;
uint8_t *buf_ptr;
int size, payload_size, startcode, id, stuffing_size, i, header_len;
@@ -582,21 +581,21 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
if ((s->packet_number % s->pack_header_freq) == 0 || s->last_scr != scr) {
/* output pack and systems header if needed */
- size = put_pack_header(ctx, buf_ptr, scr);
- buf_ptr += size;
- s->last_scr= scr;
+ size = put_pack_header(ctx, buf_ptr, scr);
+ buf_ptr += size;
+ s->last_scr = scr;
if (s->is_vcd) {
/* there is exactly one system header for each stream in a VCD
MPEG,
- One in the very first video packet and one in the very first
- audio packet (see VCD standard p. IV-7 and IV-8).*/
+ * One in the very first video packet and one in the very first
+ * audio packet (see VCD standard p. IV-7 and IV-8).*/
- if (stream->packet_number==0) {
- size = put_system_header(ctx, buf_ptr, id);
+ if (stream->packet_number == 0) {
+ size = put_system_header(ctx, buf_ptr, id);
buf_ptr += size;
}
} else if (s->is_dvd) {
- if (stream->align_iframe || s->packet_number == 0){
+ if (stream->align_iframe || s->packet_number == 0) {
int PES_bytes_to_fill = s->packet_size - size - 10;
if (pts != AV_NOPTS_VALUE) {
@@ -607,9 +606,9 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
}
if (stream->bytes_to_iframe == 0 || s->packet_number == 0) {
- size = put_system_header(ctx, buf_ptr, 0);
+ size = put_system_header(ctx, buf_ptr, 0);
buf_ptr += size;
- size = buf_ptr - buffer;
+ size = buf_ptr - buffer;
avio_write(ctx->pb, buffer, size);
avio_wb32(ctx->pb, PRIVATE_STREAM_2);
@@ -628,18 +627,20 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
buf_ptr = buffer;
s->packet_number++;
stream->align_iframe = 0;
- scr += s->packet_size*90000LL / (s->mux_rate*50LL);
//FIXME rounding and first few bytes of each packet
- size = put_pack_header(ctx, buf_ptr, scr);
- s->last_scr= scr;
- buf_ptr += size;
+ scr += s->packet_size * 90000LL /
+ (s->mux_rate * 50LL);
//FIXME rounding and first few bytes of each packet
+ size = put_pack_header(ctx, buf_ptr, scr);
+ s->last_scr = scr;
+ buf_ptr += size;
/* GOP Start */
} else if (stream->bytes_to_iframe < PES_bytes_to_fill) {
- pad_packet_bytes = PES_bytes_to_fill -
stream->bytes_to_iframe;
+ pad_packet_bytes = PES_bytes_to_fill -
+ stream->bytes_to_iframe;
}
}
} else {
if ((s->packet_number % s->system_header_freq) == 0) {
- size = put_system_header(ctx, buf_ptr, 0);
+ size = put_system_header(ctx, buf_ptr, 0);
buf_ptr += size;
}
}
@@ -651,17 +652,17 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
if (s->is_vcd && (id & 0xe0) == AUDIO_ID)
/* The VCD standard demands that 20 zero bytes follow
- each audio pack (see standard p. IV-8).*/
+ * each audio pack (see standard p. IV-8).*/
zero_trail_bytes += 20;
- if ((s->is_vcd && stream->packet_number==0)
- || (s->is_svcd && s->packet_number==0)) {
+ if ((s->is_vcd && stream->packet_number == 0)
+ || (s->is_svcd && s->packet_number == 0)) {
/* for VCD the first pack of each stream contains only the pack header,
- the system header and lots of padding (see VCD standard p. IV-6).
- In the case of an audio pack, 20 zero bytes are also added at
- the end.*/
+ * the system header and lots of padding (see VCD standard p. IV-6).
+ * In the case of an audio pack, 20 zero bytes are also added at
+ * the end.*/
/* For SVCD we fill the very first pack to increase compatibility with
- some DVD players. Not mandated by the standard.*/
+ * some DVD players. Not mandated by the standard.*/
if (s->is_svcd)
general_pack = 1; /* the system header refers to both streams
and no stream data*/
pad_packet_bytes = packet_size - zero_trail_bytes;
@@ -670,14 +671,13 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
packet_size -= pad_packet_bytes + zero_trail_bytes;
if (packet_size > 0) {
-
/* packet header size */
packet_size -= 6;
/* packet header */
if (s->is_mpeg2) {
header_len = 3;
- if (stream->packet_number==0)
+ if (stream->packet_number == 0)
header_len += 3; /* PES extension */
header_len += 1; /* obligatory stuffing byte */
} else {
@@ -695,7 +695,7 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
payload_size = packet_size - header_len;
if (id < 0xc0) {
- startcode = PRIVATE_STREAM_1;
+ startcode = PRIVATE_STREAM_1;
payload_size -= 1;
if (id >= 0x40) {
payload_size -= 3;
@@ -709,30 +709,30 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
stuffing_size = payload_size - av_fifo_size(stream->fifo);
// first byte does not fit -> reset pts/dts + stuffing
- if(payload_size <= trailer_size && pts != AV_NOPTS_VALUE){
- int timestamp_len=0;
- if(dts != pts)
+ if (payload_size <= trailer_size && pts != AV_NOPTS_VALUE) {
+ int timestamp_len = 0;
+ if (dts != pts)
timestamp_len += 5;
- if(pts != AV_NOPTS_VALUE)
+ if (pts != AV_NOPTS_VALUE)
timestamp_len += s->is_mpeg2 ? 5 : 4;
- pts=dts= AV_NOPTS_VALUE;
+ pts = dts = AV_NOPTS_VALUE;
header_len -= timestamp_len;
if (s->is_dvd && stream->align_iframe) {
pad_packet_bytes += timestamp_len;
- packet_size -= timestamp_len;
+ packet_size -= timestamp_len;
} else {
payload_size += timestamp_len;
}
stuffing_size += timestamp_len;
- if(payload_size > trailer_size)
+ if (payload_size > trailer_size)
stuffing_size += payload_size - trailer_size;
}
if (pad_packet_bytes > 0 && pad_packet_bytes <= 7) { // can't use
padding, so use stuffing
- packet_size += pad_packet_bytes;
+ packet_size += pad_packet_bytes;
payload_size += pad_packet_bytes; // undo the previous adjustment
if (stuffing_size < 0) {
- stuffing_size = pad_packet_bytes;
+ stuffing_size = pad_packet_bytes;
} else {
stuffing_size += pad_packet_bytes;
}
@@ -751,23 +751,23 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
pad_packet_bytes += stuffing_size;
packet_size -= stuffing_size;
payload_size -= stuffing_size;
- stuffing_size = 0;
+ stuffing_size = 0;
}
- nb_frames= get_nb_frames(ctx, stream, payload_size - stuffing_size);
+ nb_frames = get_nb_frames(ctx, stream, payload_size - stuffing_size);
avio_wb32(ctx->pb, startcode);
avio_wb16(ctx->pb, packet_size);
if (!s->is_mpeg2)
- for(i=0;i<stuffing_size;i++)
+ for (i = 0; i < stuffing_size; i++)
avio_w8(ctx->pb, 0xff);
if (s->is_mpeg2) {
avio_w8(ctx->pb, 0x80); /* mpeg2 id */
- pes_flags=0;
+ pes_flags = 0;
if (pts != AV_NOPTS_VALUE) {
pes_flags |= 0x80;
@@ -776,9 +776,9 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
}
/* Both the MPEG-2 and the SVCD standards demand that the
- P-STD_buffer_size field be included in the first packet of
- every stream. (see SVCD standard p. 26 V.2.3.1 and V.2.3.2
- and MPEG-2 standard 2.7.7) */
+ * P-STD_buffer_size field be included in the first packet of
+ * every stream. (see SVCD standard p. 26 V.2.3.1 and V.2.3.2
+ * and MPEG-2 standard 2.7.7) */
if (stream->packet_number == 0)
pes_flags |= 0x01;
@@ -795,11 +795,11 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
/* P-STD buffer info */
if ((id & 0xe0) == AUDIO_ID)
- avio_wb16(ctx->pb, 0x4000 | stream->max_buffer_size/ 128);
+ avio_wb16(ctx->pb, 0x4000 | stream->max_buffer_size / 128);
else
- avio_wb16(ctx->pb, 0x6000 | stream->max_buffer_size/1024);
- }
+ avio_wb16(ctx->pb, 0x6000 | stream->max_buffer_size /
1024);
+ }
} else {
if (pts != AV_NOPTS_VALUE) {
if (dts != pts) {
@@ -815,10 +815,10 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
if (s->is_mpeg2) {
/* special stuffing byte that is always written
- to prevent accidental generation of start codes. */
+ * to prevent accidental generation of start codes. */
avio_w8(ctx->pb, 0xff);
- for(i=0;i<stuffing_size;i++)
+ for (i = 0; i < stuffing_size; i++)
avio_w8(ctx->pb, 0xff);
}
@@ -834,23 +834,24 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
} else if (id >= 0x40) {
/* AC-3 */
avio_w8(ctx->pb, nb_frames);
- avio_wb16(ctx->pb, trailer_size+1);
+ avio_wb16(ctx->pb, trailer_size + 1);
}
}
/* output data */
assert(payload_size - stuffing_size <= av_fifo_size(stream->fifo));
- av_fifo_generic_read(stream->fifo, ctx->pb, payload_size -
stuffing_size, &avio_write);
+ av_fifo_generic_read(stream->fifo, ctx->pb,
+ payload_size - stuffing_size, &avio_write);
stream->bytes_to_iframe -= payload_size - stuffing_size;
- }else{
- payload_size=
- stuffing_size= 0;
+ } else {
+ payload_size =
+ stuffing_size = 0;
}
if (pad_packet_bytes > 0)
- put_padding_packet(ctx,ctx->pb, pad_packet_bytes);
+ put_padding_packet(ctx, ctx->pb, pad_packet_bytes);
- for(i=0;i<zero_trail_bytes;i++)
+ for (i = 0; i < zero_trail_bytes; i++)
avio_w8(ctx->pb, 0x00);
avio_flush(ctx->pb);
@@ -858,8 +859,8 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
s->packet_number++;
/* only increase the stream packet number if this pack actually contains
- something that is specific to this stream! I.e. a dedicated header
- or some data.*/
+ * something that is specific to this stream! I.e. a dedicated header
+ * or some data.*/
if (!general_pack)
stream->packet_number++;
@@ -869,15 +870,15 @@ static int flush_packet(AVFormatContext *ctx, int
stream_index,
static void put_vcd_padding_sector(AVFormatContext *ctx)
{
/* There are two ways to do this padding: writing a sector/pack
- of 0 values, or writing an MPEG padding pack. Both seem to
- work with most decoders, BUT the VCD standard only allows a 0-sector
- (see standard p. IV-4, IV-5).
- So a 0-sector it is...*/
+ * of 0 values, or writing an MPEG padding pack. Both seem to
+ * work with most decoders, BUT the VCD standard only allows a 0-sector
+ * (see standard p. IV-4, IV-5).
+ * So a 0-sector it is...*/
MpegMuxContext *s = ctx->priv_data;
int i;
- for(i=0;i<s->packet_size;i++)
+ for (i = 0; i < s->packet_size; i++)
avio_w8(ctx->pb, 0);
s->vcd_padding_bytes_written += s->packet_size;
@@ -885,25 +886,25 @@ static void put_vcd_padding_sector(AVFormatContext *ctx)
avio_flush(ctx->pb);
/* increasing the packet number is correct. The SCR of the following packs
- is calculated from the packet_number and it has to include the padding
- sector (it represents the sector index, not the MPEG pack index)
- (see VCD standard p. IV-6)*/
+ * is calculated from the packet_number and it has to include the padding
+ * sector (it represents the sector index, not the MPEG pack index)
+ * (see VCD standard p. IV-6)*/
s->packet_number++;
}
-static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr){
-// MpegMuxContext *s = ctx->priv_data;
+static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr)
+{
int i;
- for(i=0; i<ctx->nb_streams; i++){
- AVStream *st = ctx->streams[i];
+ for (i = 0; i < ctx->nb_streams; i++) {
+ AVStream *st = ctx->streams[i];
StreamInfo *stream = st->priv_data;
PacketDesc *pkt_desc;
- while((pkt_desc= stream->predecode_packet)
- && scr > pkt_desc->dts){ //FIXME > vs >=
- if(stream->buffer_index < pkt_desc->size ||
- stream->predecode_packet == stream->premux_packet){
+ while ((pkt_desc = stream->predecode_packet) &&
+ scr > pkt_desc->dts) { //FIXME > vs >=
+ if (stream->buffer_index < pkt_desc->size ||
+ stream->predecode_packet == stream->premux_packet) {
av_log(ctx, AV_LOG_ERROR,
"buffer underflow i=%d bufi=%d size=%d\n",
i, stream->buffer_index, pkt_desc->size);
@@ -911,7 +912,7 @@ static int remove_decoded_packets(AVFormatContext *ctx,
int64_t scr){
}
stream->buffer_index -= pkt_desc->size;
- stream->predecode_packet= pkt_desc->next;
+ stream->predecode_packet = pkt_desc->next;
av_freep(&pkt_desc);
}
}
@@ -919,125 +920,133 @@ static int remove_decoded_packets(AVFormatContext *ctx,
int64_t scr){
return 0;
}
-static int output_packet(AVFormatContext *ctx, int flush){
+static int output_packet(AVFormatContext *ctx, int flush)
+{
MpegMuxContext *s = ctx->priv_data;
AVStream *st;
StreamInfo *stream;
- int i, avail_space=0, es_size, trailer_size;
- int best_i= -1;
- int best_score= INT_MIN;
- int ignore_constraints=0;
- int64_t scr= s->last_scr;
+ int i, avail_space = 0, es_size, trailer_size;
+ int best_i = -1;
+ int best_score = INT_MIN;
+ int ignore_constraints = 0;
+ int64_t scr = s->last_scr;
PacketDesc *timestamp_packet;
- const int64_t max_delay= av_rescale(ctx->max_delay, 90000, AV_TIME_BASE);
+ const int64_t max_delay = av_rescale(ctx->max_delay, 90000, AV_TIME_BASE);
retry:
- for(i=0; i<ctx->nb_streams; i++){
- AVStream *st = ctx->streams[i];
- StreamInfo *stream = st->priv_data;
- const int avail_data= av_fifo_size(stream->fifo);
- const int space= stream->max_buffer_size - stream->buffer_index;
- int rel_space= 1024*space / stream->max_buffer_size;
- PacketDesc *next_pkt= stream->premux_packet;
+ for (i = 0; i < ctx->nb_streams; i++) {
+ AVStream *st = ctx->streams[i];
+ StreamInfo *stream = st->priv_data;
+ const int avail_data = av_fifo_size(stream->fifo);
+ const int space = stream->max_buffer_size - stream->buffer_index;
+ int rel_space = 1024 * space / stream->max_buffer_size;
+ PacketDesc *next_pkt = stream->premux_packet;
/* for subtitle, a single PES packet must be generated,
- so we flush after every single subtitle packet */
- if(s->packet_size > avail_data && !flush
- && st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
+ * so we flush after every single subtitle packet */
+ if (s->packet_size > avail_data && !flush
+ && st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
return 0;
- if(avail_data==0)
+ if (avail_data == 0)
continue;
- assert(avail_data>0);
+ assert(avail_data > 0);
- if(space < s->packet_size && !ignore_constraints)
+ if (space < s->packet_size && !ignore_constraints)
continue;
- if(next_pkt && next_pkt->dts - scr > max_delay)
+ if (next_pkt && next_pkt->dts - scr > max_delay)
continue;
- if(rel_space > best_score){
- best_score= rel_space;
- best_i = i;
- avail_space= space;
+ if (rel_space > best_score) {
+ best_score = rel_space;
+ best_i = i;
+ avail_space = space;
}
}
- if(best_i < 0){
- int64_t best_dts= INT64_MAX;
+ if (best_i < 0) {
+ int64_t best_dts = INT64_MAX;
- for(i=0; i<ctx->nb_streams; i++){
- AVStream *st = ctx->streams[i];
- StreamInfo *stream = st->priv_data;
- PacketDesc *pkt_desc= stream->predecode_packet;
- if(pkt_desc && pkt_desc->dts < best_dts)
- best_dts= pkt_desc->dts;
+ for (i = 0; i < ctx->nb_streams; i++) {
+ AVStream *st = ctx->streams[i];
+ StreamInfo *stream = st->priv_data;
+ PacketDesc *pkt_desc = stream->predecode_packet;
+ if (pkt_desc && pkt_desc->dts < best_dts)
+ best_dts = pkt_desc->dts;
}
av_dlog(ctx, "bumping scr, scr:%f, dts:%f\n",
scr / 90000.0, best_dts / 90000.0);
- if(best_dts == INT64_MAX)
+ if (best_dts == INT64_MAX)
return 0;
- if(scr >= best_dts+1 && !ignore_constraints){
- av_log(ctx, AV_LOG_ERROR, "packet too large, ignoring buffer
limits to mux it\n");
- ignore_constraints= 1;
+ if (scr >= best_dts + 1 && !ignore_constraints) {
+ av_log(ctx, AV_LOG_ERROR,
+ "packet too large, ignoring buffer limits to mux it\n");
+ ignore_constraints = 1;
}
- scr= FFMAX(best_dts+1, scr);
- if(remove_decoded_packets(ctx, scr) < 0)
+ scr = FFMAX(best_dts + 1, scr);
+ if (remove_decoded_packets(ctx, scr) < 0)
return -1;
goto retry;
}
assert(best_i >= 0);
- st = ctx->streams[best_i];
+ st = ctx->streams[best_i];
stream = st->priv_data;
assert(av_fifo_size(stream->fifo) > 0);
assert(avail_space >= s->packet_size || ignore_constraints);
- timestamp_packet= stream->premux_packet;
- if(timestamp_packet->unwritten_size == timestamp_packet->size){
- trailer_size= 0;
- }else{
- trailer_size= timestamp_packet->unwritten_size;
- timestamp_packet= timestamp_packet->next;
+ timestamp_packet = stream->premux_packet;
+ if (timestamp_packet->unwritten_size == timestamp_packet->size) {
+ trailer_size = 0;
+ } else {
+ trailer_size = timestamp_packet->unwritten_size;
+ timestamp_packet = timestamp_packet->next;
}
- if(timestamp_packet){
+ if (timestamp_packet) {
av_dlog(ctx, "dts:%f pts:%f scr:%f stream:%d\n",
timestamp_packet->dts / 90000.0,
timestamp_packet->pts / 90000.0,
scr / 90000.0, best_i);
- es_size= flush_packet(ctx, best_i, timestamp_packet->pts,
timestamp_packet->dts, scr, trailer_size);
- }else{
+ es_size = flush_packet(ctx, best_i, timestamp_packet->pts,
+ timestamp_packet->dts, scr, trailer_size);
+ } else {
assert(av_fifo_size(stream->fifo) == trailer_size);
- es_size= flush_packet(ctx, best_i, AV_NOPTS_VALUE, AV_NOPTS_VALUE,
scr, trailer_size);
+ es_size = flush_packet(ctx, best_i, AV_NOPTS_VALUE, AV_NOPTS_VALUE,
scr,
+ trailer_size);
}
if (s->is_vcd) {
/* Write one or more padding sectors, if necessary, to reach
- the constant overall bitrate.*/
+ * the constant overall bitrate.*/
int vcd_pad_bytes;
- while((vcd_pad_bytes =
get_vcd_padding_size(ctx,stream->premux_packet->pts) ) >= s->packet_size){
//FIXME pts cannot be correct here
+ //FIXME pts cannot be correct here
+ while ((vcd_pad_bytes = get_vcd_padding_size(ctx,
stream->premux_packet->pts)) >= s->packet_size) {
put_vcd_padding_sector(ctx);
- s->last_scr += s->packet_size*90000LL / (s->mux_rate*50LL);
//FIXME rounding and first few bytes of each packet
+ //FIXME rounding and first few bytes of each packet
+ s->last_scr += s->packet_size * 90000LL / (s->mux_rate * 50LL);
}
}
stream->buffer_index += es_size;
- s->last_scr += s->packet_size*90000LL / (s->mux_rate*50LL); //FIXME
rounding and first few bytes of each packet
+ //FIXME rounding and first few bytes of each packet
+ s->last_scr += s->packet_size * 90000LL / (s->mux_rate * 50LL);
- while(stream->premux_packet && stream->premux_packet->unwritten_size <=
es_size){
- es_size -= stream->premux_packet->unwritten_size;
- stream->premux_packet= stream->premux_packet->next;
+ while (stream->premux_packet &&
+ stream->premux_packet->unwritten_size <= es_size) {
+ es_size -= stream->premux_packet->unwritten_size;
+ stream->premux_packet = stream->premux_packet->next;
}
- if(es_size)
+ if (es_size)
stream->premux_packet->unwritten_size -= es_size;
- if(remove_decoded_packets(ctx, s->last_scr) < 0)
+ if (remove_decoded_packets(ctx, s->last_scr) < 0)
return -1;
return 1;
@@ -1045,27 +1054,29 @@ retry:
static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
{
- MpegMuxContext *s = ctx->priv_data;
- int stream_index= pkt->stream_index;
- int size= pkt->size;
- uint8_t *buf= pkt->data;
- AVStream *st = ctx->streams[stream_index];
+ MpegMuxContext *s = ctx->priv_data;
+ int stream_index = pkt->stream_index;
+ int size = pkt->size;
+ uint8_t *buf = pkt->data;
+ AVStream *st = ctx->streams[stream_index];
StreamInfo *stream = st->priv_data;
int64_t pts, dts;
PacketDesc *pkt_desc;
int preload;
- const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
(pkt->flags & AV_PKT_FLAG_KEY);
+ const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
+ (pkt->flags & AV_PKT_FLAG_KEY);
preload = av_rescale(s->preload, 90000, AV_TIME_BASE);
- pts= pkt->pts;
- dts= pkt->dts;
+ pts = pkt->pts;
+ dts = pkt->dts;
- if(pts != AV_NOPTS_VALUE) pts += 2*preload;
- if(dts != AV_NOPTS_VALUE){
- if(!s->last_scr)
- s->last_scr= dts + preload;
- dts += 2*preload;
+ if (pts != AV_NOPTS_VALUE)
+ pts += 2 * preload;
+ if (dts != AV_NOPTS_VALUE) {
+ if (!s->last_scr)
+ s->last_scr = dts + preload;
+ dts += 2 * preload;
}
av_dlog(ctx, "dts:%f pts:%f flags:%d stream:%d nopts:%d\n",
@@ -1073,57 +1084,59 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx,
AVPacket *pkt)
pkt->stream_index, pts != AV_NOPTS_VALUE);
if (!stream->premux_packet)
stream->next_packet = &stream->premux_packet;
- *stream->next_packet=
- pkt_desc= av_mallocz(sizeof(PacketDesc));
- pkt_desc->pts= pts;
- pkt_desc->dts= dts;
- pkt_desc->unwritten_size=
- pkt_desc->size= size;
- if(!stream->predecode_packet)
- stream->predecode_packet= pkt_desc;
- stream->next_packet= &pkt_desc->next;
+ *stream->next_packet =
+ pkt_desc = av_mallocz(sizeof(PacketDesc));
+ pkt_desc->pts = pts;
+ pkt_desc->dts = dts;
+ pkt_desc->unwritten_size =
+ pkt_desc->size = size;
+ if (!stream->predecode_packet)
+ stream->predecode_packet = pkt_desc;
+ stream->next_packet = &pkt_desc->next;
if (av_fifo_realloc2(stream->fifo, av_fifo_size(stream->fifo) + size) < 0)
return -1;
- if (s->is_dvd){
- if (is_iframe && (s->packet_number == 0 || (pts -
stream->vobu_start_pts >= 36000))) { // min VOBU length 0.4 seconds (mpucoder)
+ if (s->is_dvd) {
+ // min VOBU length 0.4 seconds (mpucoder)
+ if (is_iframe &&
+ (s->packet_number == 0 ||
+ (pts - stream->vobu_start_pts >= 36000))) {
stream->bytes_to_iframe = av_fifo_size(stream->fifo);
- stream->align_iframe = 1;
- stream->vobu_start_pts = pts;
+ stream->align_iframe = 1;
+ stream->vobu_start_pts = pts;
}
}
av_fifo_generic_write(stream->fifo, buf, size, NULL);
- for(;;){
- int ret= output_packet(ctx, 0);
- if(ret<=0)
+ for (;;) {
+ int ret = output_packet(ctx, 0);
+ if (ret <= 0)
return ret;
}
}
static int mpeg_mux_end(AVFormatContext *ctx)
{
-// MpegMuxContext *s = ctx->priv_data;
StreamInfo *stream;
int i;
- for(;;){
- int ret= output_packet(ctx, 1);
- if(ret<0)
+ for (;;) {
+ int ret = output_packet(ctx, 1);
+ if (ret < 0)
return ret;
- else if(ret==0)
+ else if (ret == 0)
break;
}
/* End header according to MPEG1 systems standard. We do not write
- it as it is usually not needed by decoders and because it
- complicates MPEG stream concatenation. */
+ * it as it is usually not needed by decoders and because it
+ * complicates MPEG stream concatenation. */
//avio_wb32(ctx->pb, ISO_11172_END_CODE);
//avio_flush(ctx->pb);
- for(i=0;i<ctx->nb_streams;i++) {
+ for (i = 0; i < ctx->nb_streams; i++) {
stream = ctx->streams[i]->priv_data;
assert(av_fifo_size(stream->fifo) == 0);
--
1.9.0
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