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ffmpeg.wasm-core
Commit b4f0e04c authored by Michael Niedermayer's avatar Michael Niedermayer
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Introduce AVIStream struct and move stream based variables to it. 

This removes all but one MAX_STREAM from avienc.c.

Originally committed as revision 21498 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 3b849245
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Showing with 61 additions and 39 deletions
libavformat/avienc.c
View file @ b4f0e04c
......@@ -42,14 +42,18 @@ typedef struct AVIIndex {
typedef struct {
int64_t riff_start, movi_list, odml_list;
int64_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
int audio_strm_length[MAX_STREAMS];
int64_t frames_hdr_all;
int riff_id;
int packet_count[MAX_STREAMS];
AVIIndex indexes[MAX_STREAMS];
} AVIContext;
typedef struct {
int64_t frames_hdr_strm;
int audio_strm_length;
int packet_count;
AVIIndex indexes;
} AVIStream ;
static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id)
{
int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
......@@ -57,15 +61,18 @@ static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id)
return &idx->cluster[cl][id];
}
static int64_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb,
static int64_t avi_start_new_riff(AVFormatContext *s, ByteIOContext *pb,
const char* riff_tag, const char* list_tag)
{
AVIContext *avi= s->priv_data;
int64_t loff;
int i;
avi->riff_id++;
for (i=0; i<MAX_STREAMS; i++)
avi->indexes[i].entry = 0;
for (i=0; i<s->nb_streams; i++){
AVIStream *avist= s->streams[i]->priv_data;
avist->indexes.entry = 0;
}
avi->riff_start = ff_start_tag(pb, "RIFF");
put_tag(pb, riff_tag);
......@@ -125,17 +132,19 @@ static int avi_write_counters(AVFormatContext* s, int riff_id)
file_size = url_ftell(pb);
for(n = 0; n < s->nb_streams; n++) {
assert(avi->frames_hdr_strm[n]);
AVIStream *avist= s->streams[n]->priv_data;
assert(avist->frames_hdr_strm);
stream = s->streams[n]->codec;
url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
url_fseek(pb, avist->frames_hdr_strm, SEEK_SET);
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
if(au_ssize == 0) {
put_le32(pb, avi->packet_count[n]);
put_le32(pb, avist->packet_count);
} else {
put_le32(pb, avi->audio_strm_length[n] / au_ssize);
put_le32(pb, avist->audio_strm_length / au_ssize);
}
if(stream->codec_type == CODEC_TYPE_VIDEO)
nb_frames = FFMAX(nb_frames, avi->packet_count[n]);
nb_frames = FFMAX(nb_frames, avist->packet_count);
}
if(riff_id == 1) {
assert(avi->frames_hdr_all);
......@@ -155,9 +164,15 @@ static int avi_write_header(AVFormatContext *s)
AVCodecContext *stream, *video_enc;
int64_t list1, list2, strh, strf;
for(n=0;n<s->nb_streams;n++) {
s->streams[n]->priv_data= av_mallocz(sizeof(AVIStream));
if(!s->streams[n]->priv_data)
return AVERROR(ENOMEM);
}
/* header list */
avi->riff_id = 0;
list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl");
/* avi header */
put_tag(pb, "avih");
......@@ -204,6 +219,7 @@ static int avi_write_header(AVFormatContext *s)
/* stream list */
for(i=0;i<n;i++) {
AVIStream *avist= s->streams[i]->priv_data;
list2 = ff_start_tag(pb, "LIST");
put_tag(pb, "strl");
......@@ -238,7 +254,7 @@ static int avi_write_header(AVFormatContext *s)
av_set_pts_info(s->streams[i], 64, au_scale, au_byterate);
put_le32(pb, 0); /* start */
avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
avist->frames_hdr_strm = url_ftell(pb); /* remember this offset to fill later */
if (url_is_streamed(pb))
put_le32(pb, AVI_MAX_RIFF_SIZE); /* FIXME: this may be broken, but who cares */
else
......@@ -288,8 +304,8 @@ static int avi_write_header(AVFormatContext *s)
* like to get away without making AVI an OpenDML one
* for compatibility reasons.
*/
avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
avi->indexes[i].indx_start = ff_start_tag(pb, "JUNK");
avist->indexes.entry = avist->indexes.ents_allocated = 0;
avist->indexes.indx_start = ff_start_tag(pb, "JUNK");
put_le16(pb, 4); /* wLongsPerEntry */
put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
put_byte(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
......@@ -300,7 +316,7 @@ static int avi_write_header(AVFormatContext *s)
put_le32(pb, 0); Must be 0. */
for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
put_le64(pb, 0);
ff_end_tag(pb, avi->indexes[i].indx_start);
ff_end_tag(pb, avist->indexes.indx_start);
}
if( stream->codec_type == CODEC_TYPE_VIDEO
......@@ -392,6 +408,7 @@ static int avi_write_ix(AVFormatContext *s)
return -1;
for (i=0;i<s->nb_streams;i++) {
AVIStream *avist= s->streams[i]->priv_data;
int64_t ix, pos;
avi_stream2fourcc(&tag[0], i, s->streams[i]->codec->codec_type);
......@@ -400,19 +417,19 @@ static int avi_write_ix(AVFormatContext *s)
/* Writing AVI OpenDML leaf index chunk */
ix = url_ftell(pb);
put_tag(pb, &ix_tag[0]); /* ix?? */
put_le32(pb, avi->indexes[i].entry * 8 + 24);
put_le32(pb, avist->indexes.entry * 8 + 24);
/* chunk size */
put_le16(pb, 2); /* wLongsPerEntry */
put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
put_byte(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
put_le32(pb, avi->indexes[i].entry);
put_le32(pb, avist->indexes.entry);
/* nEntriesInUse */
put_tag(pb, &tag[0]); /* dwChunkId */
put_le64(pb, avi->movi_list);/* qwBaseOffset */
put_le32(pb, 0); /* dwReserved_3 (must be 0) */
for (j=0; j<avi->indexes[i].entry; j++) {
AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
for (j=0; j<avist->indexes.entry; j++) {
AVIIentry* ie = avi_get_ientry(&avist->indexes, j);
put_le32(pb, ie->pos + 8);
put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
(ie->flags & 0x10 ? 0 : 0x80000000));
......@@ -421,14 +438,14 @@ static int avi_write_ix(AVFormatContext *s)
pos = url_ftell(pb);
/* Updating one entry in the AVI OpenDML master index */
url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
url_fseek(pb, avist->indexes.indx_start - 8, SEEK_SET);
put_tag(pb, "indx"); /* enabling this entry */
url_fskip(pb, 8);
put_le32(pb, avi->riff_id); /* nEntriesInUse */
url_fskip(pb, 16*avi->riff_id);
put_le64(pb, ix); /* qwOffset */
put_le32(pb, pos - ix); /* dwSize */
put_le32(pb, avi->indexes[i].entry); /* dwDuration */
put_le32(pb, avist->indexes.entry); /* dwDuration */
url_fseek(pb, pos, SEEK_SET);
}
......@@ -453,10 +470,11 @@ static int avi_write_idx1(AVFormatContext *s)
do {
empty = 1;
for (i=0; i<s->nb_streams; i++) {
if (avi->indexes[i].entry <= entry[i])
AVIStream *avist= s->streams[i]->priv_data;
if (avist->indexes.entry <= entry[i])
continue;
tie = avi_get_ientry(&avi->indexes[i], entry[i]);
tie = avi_get_ientry(&avist->indexes, entry[i]);
if (empty || tie->pos < ie->pos) {
ie = tie;
stream_id = i;
......@@ -487,11 +505,12 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
unsigned char tag[5];
unsigned int flags=0;
const int stream_index= pkt->stream_index;
AVIStream *avist= s->streams[stream_index]->priv_data;
AVCodecContext *enc= s->streams[stream_index]->codec;
int size= pkt->size;
// av_log(s, AV_LOG_DEBUG, "%"PRId64" %d %d\n", pkt->dts, avi->packet_count[stream_index], stream_index);
while(enc->block_align==0 && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avi->packet_count[stream_index]){
while(enc->block_align==0 && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avist->packet_count){
AVPacket empty_packet;
av_init_packet(&empty_packet);
......@@ -501,7 +520,7 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
avi_write_packet(s, &empty_packet);
// av_log(s, AV_LOG_DEBUG, "dup %"PRId64" %d\n", pkt->dts, avi->packet_count[stream_index]);
}
avi->packet_count[stream_index]++;
avist->packet_count++;
// Make sure to put an OpenDML chunk when the file size exceeds the limits
if (!url_is_streamed(pb) &&
......@@ -514,18 +533,18 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
avi_write_idx1(s);
ff_end_tag(pb, avi->riff_start);
avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi");
}
avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
if(pkt->flags&PKT_FLAG_KEY)
flags = 0x10;
if (enc->codec_type == CODEC_TYPE_AUDIO) {
avi->audio_strm_length[stream_index] += size;
avist->audio_strm_length += size;
}
if (!url_is_streamed(s->pb)) {
AVIIndex* idx = &avi->indexes[stream_index];
AVIIndex* idx = &avist->indexes;
int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
if (idx->ents_allocated <= idx->entry) {
......@@ -579,12 +598,14 @@ static int avi_write_trailer(AVFormatContext *s)
for (n=nb_frames=0;n<s->nb_streams;n++) {
AVCodecContext *stream = s->streams[n]->codec;
AVIStream *avist= s->streams[n]->priv_data;
if (stream->codec_type == CODEC_TYPE_VIDEO) {
if (nb_frames < avi->packet_count[n])
nb_frames = avi->packet_count[n];
if (nb_frames < avist->packet_count)
nb_frames = avist->packet_count;
} else {
if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
nb_frames += avi->packet_count[n];
nb_frames += avist->packet_count;
}
}
}
......@@ -596,11 +617,12 @@ static int avi_write_trailer(AVFormatContext *s)
}
put_flush_packet(pb);
for (i=0; i<MAX_STREAMS; i++) {
for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
av_free(avi->indexes[i].cluster[j]);
av_freep(&avi->indexes[i].cluster);
avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
for (i=0; i<s->nb_streams; i++) {
AVIStream *avist= s->streams[i]->priv_data;
for (j=0; j<avist->indexes.ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
av_free(avist->indexes.cluster[j]);
av_freep(&avist->indexes.cluster);
avist->indexes.ents_allocated = avist->indexes.entry = 0;
}
return res;
......
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