mirror of https://git.ffmpeg.org/ffmpeg.git
matroskadec: split frame parsing
This commit is contained in:
Luca Barbato
parent
2d0e7713f9
commit
c831ebf616
|
|
@ -1855,6 +1855,141 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
|
|||
return res;
|
||||
}
|
||||
|
||||
static int matroska_parse_rm_audio(MatroskaDemuxContext *matroska,
|
||||
MatroskaTrack *track,
|
||||
AVStream *st,
|
||||
uint8_t *data, int size,
|
||||
uint64_t timecode, uint64_t duration,
|
||||
int64_t pos)
|
||||
{
|
||||
int a = st->codec->block_align;
|
||||
int sps = track->audio.sub_packet_size;
|
||||
int cfs = track->audio.coded_framesize;
|
||||
int h = track->audio.sub_packet_h;
|
||||
int y = track->audio.sub_packet_cnt;
|
||||
int w = track->audio.frame_size;
|
||||
int x;
|
||||
|
||||
if (!track->audio.pkt_cnt) {
|
||||
if (track->audio.sub_packet_cnt == 0)
|
||||
track->audio.buf_timecode = timecode;
|
||||
if (st->codec->codec_id == AV_CODEC_ID_RA_288) {
|
||||
if (size < cfs * h / 2) {
|
||||
av_log(matroska->ctx, AV_LOG_ERROR,
|
||||
"Corrupt int4 RM-style audio packet size\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
for (x=0; x<h/2; x++)
|
||||
memcpy(track->audio.buf+x*2*w+y*cfs,
|
||||
data+x*cfs, cfs);
|
||||
} else if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
|
||||
if (size < w) {
|
||||
av_log(matroska->ctx, AV_LOG_ERROR,
|
||||
"Corrupt sipr RM-style audio packet size\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
memcpy(track->audio.buf + y*w, data, w);
|
||||
} else {
|
||||
if (size < sps * w / sps) {
|
||||
av_log(matroska->ctx, AV_LOG_ERROR,
|
||||
"Corrupt generic RM-style audio packet size\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
for (x=0; x<w/sps; x++)
|
||||
memcpy(track->audio.buf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), data+x*sps, sps);
|
||||
}
|
||||
|
||||
if (++track->audio.sub_packet_cnt >= h) {
|
||||
if (st->codec->codec_id == AV_CODEC_ID_SIPR)
|
||||
ff_rm_reorder_sipr_data(track->audio.buf, h, w);
|
||||
track->audio.sub_packet_cnt = 0;
|
||||
track->audio.pkt_cnt = h*w / a;
|
||||
}
|
||||
}
|
||||
|
||||
while (track->audio.pkt_cnt) {
|
||||
AVPacket *pkt = av_mallocz(sizeof(AVPacket));
|
||||
av_new_packet(pkt, a);
|
||||
memcpy(pkt->data, track->audio.buf
|
||||
+ a * (h*w / a - track->audio.pkt_cnt--), a);
|
||||
pkt->pts = track->audio.buf_timecode;
|
||||
track->audio.buf_timecode = AV_NOPTS_VALUE;
|
||||
pkt->pos = pos;
|
||||
pkt->stream_index = st->index;
|
||||
dynarray_add(&matroska->packets,&matroska->num_packets,pkt);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
static int matroska_parse_frame(MatroskaDemuxContext *matroska,
|
||||
MatroskaTrack *track,
|
||||
AVStream *st,
|
||||
uint8_t *data, int pkt_size,
|
||||
uint64_t timecode, uint64_t duration,
|
||||
int64_t pos, int is_keyframe)
|
||||
{
|
||||
MatroskaTrackEncoding *encodings = track->encodings.elem;
|
||||
uint8_t *pkt_data = data;
|
||||
int offset = 0, res;
|
||||
AVPacket *pkt;
|
||||
|
||||
if (encodings && encodings->scope & 1) {
|
||||
res = matroska_decode_buffer(&pkt_data, &pkt_size, track);
|
||||
if (res < 0)
|
||||
return res;
|
||||
}
|
||||
|
||||
if (st->codec->codec_id == AV_CODEC_ID_PRORES)
|
||||
offset = 8;
|
||||
|
||||
pkt = av_mallocz(sizeof(AVPacket));
|
||||
/* XXX: prevent data copy... */
|
||||
if (av_new_packet(pkt, pkt_size + offset) < 0) {
|
||||
av_free(pkt);
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
|
||||
if (st->codec->codec_id == AV_CODEC_ID_PRORES) {
|
||||
uint8_t *buf = pkt->data;
|
||||
bytestream_put_be32(&buf, pkt_size);
|
||||
bytestream_put_be32(&buf, MKBETAG('i', 'c', 'p', 'f'));
|
||||
}
|
||||
|
||||
memcpy(pkt->data + offset, pkt_data, pkt_size);
|
||||
|
||||
if (pkt_data != data)
|
||||
av_free(pkt_data);
|
||||
|
||||
pkt->flags = is_keyframe;
|
||||
pkt->stream_index = st->index;
|
||||
|
||||
if (track->ms_compat)
|
||||
pkt->dts = timecode;
|
||||
else
|
||||
pkt->pts = timecode;
|
||||
pkt->pos = pos;
|
||||
if (st->codec->codec_id == AV_CODEC_ID_TEXT)
|
||||
pkt->convergence_duration = duration;
|
||||
else if (track->type != MATROSKA_TRACK_TYPE_SUBTITLE)
|
||||
pkt->duration = duration;
|
||||
|
||||
if (st->codec->codec_id == AV_CODEC_ID_SSA)
|
||||
matroska_fix_ass_packet(matroska, pkt, duration);
|
||||
|
||||
if (matroska->prev_pkt &&
|
||||
timecode != AV_NOPTS_VALUE &&
|
||||
matroska->prev_pkt->pts == timecode &&
|
||||
matroska->prev_pkt->stream_index == st->index &&
|
||||
st->codec->codec_id == AV_CODEC_ID_SSA)
|
||||
matroska_merge_packets(matroska->prev_pkt, pkt);
|
||||
else {
|
||||
dynarray_add(&matroska->packets,&matroska->num_packets,pkt);
|
||||
matroska->prev_pkt = pkt;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
|
||||
int size, int64_t pos, uint64_t cluster_time,
|
||||
uint64_t duration, int is_keyframe,
|
||||
|
|
@ -1864,7 +1999,6 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
|
|||
MatroskaTrack *track;
|
||||
int res = 0;
|
||||
AVStream *st;
|
||||
AVPacket *pkt;
|
||||
int16_t block_time;
|
||||
uint32_t *lace_size = NULL;
|
||||
int n, flags, laces = 0;
|
||||
|
|
@ -1917,139 +2051,33 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
|
|||
res = matroska_parse_laces(matroska, &data, size, (flags & 0x06) >> 1,
|
||||
&lace_size, &laces);
|
||||
|
||||
if (res == 0) {
|
||||
for (n = 0; n < laces; n++) {
|
||||
if ((st->codec->codec_id == AV_CODEC_ID_RA_288 ||
|
||||
st->codec->codec_id == AV_CODEC_ID_COOK ||
|
||||
st->codec->codec_id == AV_CODEC_ID_SIPR ||
|
||||
st->codec->codec_id == AV_CODEC_ID_ATRAC3) &&
|
||||
st->codec->block_align && track->audio.sub_packet_size) {
|
||||
int a = st->codec->block_align;
|
||||
int sps = track->audio.sub_packet_size;
|
||||
int cfs = track->audio.coded_framesize;
|
||||
int h = track->audio.sub_packet_h;
|
||||
int y = track->audio.sub_packet_cnt;
|
||||
int w = track->audio.frame_size;
|
||||
int x;
|
||||
if (res)
|
||||
goto end;
|
||||
|
||||
if (!track->audio.pkt_cnt) {
|
||||
if (track->audio.sub_packet_cnt == 0)
|
||||
track->audio.buf_timecode = timecode;
|
||||
if (st->codec->codec_id == AV_CODEC_ID_RA_288) {
|
||||
if (size < cfs * h / 2) {
|
||||
av_log(matroska->ctx, AV_LOG_ERROR,
|
||||
"Corrupt int4 RM-style audio packet size\n");
|
||||
res = AVERROR_INVALIDDATA;
|
||||
goto end;
|
||||
}
|
||||
for (x=0; x<h/2; x++)
|
||||
memcpy(track->audio.buf+x*2*w+y*cfs,
|
||||
data+x*cfs, cfs);
|
||||
} else if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
|
||||
if (size < w) {
|
||||
av_log(matroska->ctx, AV_LOG_ERROR,
|
||||
"Corrupt sipr RM-style audio packet size\n");
|
||||
res = AVERROR_INVALIDDATA;
|
||||
goto end;
|
||||
}
|
||||
memcpy(track->audio.buf + y*w, data, w);
|
||||
} else {
|
||||
if (size < sps * w / sps) {
|
||||
av_log(matroska->ctx, AV_LOG_ERROR,
|
||||
"Corrupt generic RM-style audio packet size\n");
|
||||
res = AVERROR_INVALIDDATA;
|
||||
goto end;
|
||||
}
|
||||
for (x=0; x<w/sps; x++)
|
||||
memcpy(track->audio.buf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), data+x*sps, sps);
|
||||
}
|
||||
for (n = 0; n < laces; n++) {
|
||||
if ((st->codec->codec_id == AV_CODEC_ID_RA_288 ||
|
||||
st->codec->codec_id == AV_CODEC_ID_COOK ||
|
||||
st->codec->codec_id == AV_CODEC_ID_SIPR ||
|
||||
st->codec->codec_id == AV_CODEC_ID_ATRAC3) &&
|
||||
st->codec->block_align && track->audio.sub_packet_size) {
|
||||
|
||||
if (++track->audio.sub_packet_cnt >= h) {
|
||||
if (st->codec->codec_id == AV_CODEC_ID_SIPR)
|
||||
ff_rm_reorder_sipr_data(track->audio.buf, h, w);
|
||||
track->audio.sub_packet_cnt = 0;
|
||||
track->audio.pkt_cnt = h*w / a;
|
||||
}
|
||||
}
|
||||
while (track->audio.pkt_cnt) {
|
||||
pkt = av_mallocz(sizeof(AVPacket));
|
||||
av_new_packet(pkt, a);
|
||||
memcpy(pkt->data, track->audio.buf
|
||||
+ a * (h*w / a - track->audio.pkt_cnt--), a);
|
||||
pkt->pts = track->audio.buf_timecode;
|
||||
track->audio.buf_timecode = AV_NOPTS_VALUE;
|
||||
pkt->pos = pos;
|
||||
pkt->stream_index = st->index;
|
||||
dynarray_add(&matroska->packets,&matroska->num_packets,pkt);
|
||||
}
|
||||
} else {
|
||||
MatroskaTrackEncoding *encodings = track->encodings.elem;
|
||||
uint32_t pkt_size = lace_size[n];
|
||||
uint8_t *pkt_data = data;
|
||||
int offset = 0;
|
||||
res = matroska_parse_rm_audio(matroska, track, st, data, size,
|
||||
timecode, duration, pos);
|
||||
if (res)
|
||||
goto end;
|
||||
|
||||
if (encodings && encodings->scope & 1) {
|
||||
res = matroska_decode_buffer(&pkt_data, &pkt_size, track);
|
||||
if (res < 0)
|
||||
break;
|
||||
}
|
||||
|
||||
if (st->codec->codec_id == AV_CODEC_ID_PRORES)
|
||||
offset = 8;
|
||||
|
||||
pkt = av_mallocz(sizeof(AVPacket));
|
||||
/* XXX: prevent data copy... */
|
||||
if (av_new_packet(pkt, pkt_size + offset) < 0) {
|
||||
av_free(pkt);
|
||||
res = AVERROR(ENOMEM);
|
||||
break;
|
||||
}
|
||||
|
||||
if (st->codec->codec_id == AV_CODEC_ID_PRORES) {
|
||||
uint8_t *buf = pkt->data;
|
||||
bytestream_put_be32(&buf, pkt_size);
|
||||
bytestream_put_be32(&buf, MKBETAG('i', 'c', 'p', 'f'));
|
||||
}
|
||||
|
||||
memcpy(pkt->data + offset, pkt_data, pkt_size);
|
||||
|
||||
if (pkt_data != data)
|
||||
av_free(pkt_data);
|
||||
|
||||
if (n == 0)
|
||||
pkt->flags = is_keyframe;
|
||||
pkt->stream_index = st->index;
|
||||
|
||||
if (track->ms_compat)
|
||||
pkt->dts = timecode;
|
||||
else
|
||||
pkt->pts = timecode;
|
||||
pkt->pos = pos;
|
||||
if (st->codec->codec_id == AV_CODEC_ID_TEXT)
|
||||
pkt->convergence_duration = duration;
|
||||
else if (track->type != MATROSKA_TRACK_TYPE_SUBTITLE)
|
||||
pkt->duration = duration;
|
||||
|
||||
if (st->codec->codec_id == AV_CODEC_ID_SSA)
|
||||
matroska_fix_ass_packet(matroska, pkt, duration);
|
||||
|
||||
if (matroska->prev_pkt &&
|
||||
timecode != AV_NOPTS_VALUE &&
|
||||
matroska->prev_pkt->pts == timecode &&
|
||||
matroska->prev_pkt->stream_index == st->index &&
|
||||
st->codec->codec_id == AV_CODEC_ID_SSA)
|
||||
matroska_merge_packets(matroska->prev_pkt, pkt);
|
||||
else {
|
||||
dynarray_add(&matroska->packets,&matroska->num_packets,pkt);
|
||||
matroska->prev_pkt = pkt;
|
||||
}
|
||||
}
|
||||
|
||||
if (timecode != AV_NOPTS_VALUE)
|
||||
timecode = duration ? timecode + duration : AV_NOPTS_VALUE;
|
||||
data += lace_size[n];
|
||||
size -= lace_size[n];
|
||||
} else {
|
||||
res = matroska_parse_frame(matroska, track, st, data, lace_size[n],
|
||||
timecode, duration,
|
||||
pos, !n? is_keyframe : 0);
|
||||
if (res)
|
||||
goto end;
|
||||
}
|
||||
|
||||
if (timecode != AV_NOPTS_VALUE)
|
||||
timecode = duration ? timecode + duration : AV_NOPTS_VALUE;
|
||||
data += lace_size[n];
|
||||
size -= lace_size[n];
|
||||
}
|
||||
|
||||
end:
|
||||
|
|
|
|||
Loading…
Reference in New Issue