static int avi_write_counters(AVFormatContext* s, int riff_id)
{
ByteIOContext *pb = &s->pb;
AVIContext *avi = s->priv_data;
int n, au_byterate, au_ssize, au_scale, nb_frames = 0;
offset_t file_size;
AVCodecContext* stream;
file_size = url_ftell(pb);
for(n = 0; n < s->nb_streams; n++) {
assert(avi->frames_hdr_strm[n]);
stream = s->streams[n]->codec;
url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
if(au_ssize == 0) {
put_le32(pb, avi->packet_count[n]);
} else {
put_le32(pb, avi->audio_strm_length[n] / au_ssize);
}
if(stream->codec_type == CODEC_TYPE_VIDEO)
nb_frames = FFMAX(nb_frames, avi->packet_count[n]);
}
if(riff_id == 1) {
assert(avi->frames_hdr_all);
url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
put_le32(pb, nb_frames);
}
url_fseek(pb, file_size, SEEK_SET);
return 0;
}
static int avi_write_counters(AVFormatContext* s, int riff_id)
{
AVIOContext *pb = s->pb;
AVIContext *avi = s->priv_data;
int n, au_byterate, au_ssize, au_scale, nb_frames = 0;
int64_t file_size;
AVCodecContext* stream;
file_size = avio_tell(pb);
for(n = 0; n < s->nb_streams; n++) {
AVIStream *avist= s->streams[n]->priv_data;
av_assert0(avist->frames_hdr_strm);
stream = s->streams[n]->codec;
avio_seek(pb, avist->frames_hdr_strm, SEEK_SET);
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
if(au_ssize == 0) {
avio_wl32(pb, avist->packet_count);
} else {
avio_wl32(pb, avist->audio_strm_length / au_ssize);
}
if(stream->codec_type == AVMEDIA_TYPE_VIDEO)
nb_frames = FFMAX(nb_frames, avist->packet_count);
}
if(riff_id == 1) {
av_assert0(avi->frames_hdr_all);
avio_seek(pb, avi->frames_hdr_all, SEEK_SET);
avio_wl32(pb, nb_frames);
}
avio_seek(pb, file_size, SEEK_SET);
return 0;
}
static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix, int size)
{
AVIOContext *pb = s->pb;
AVIContext *avi = s->priv_data;
AVIStream *avist = s->streams[stream_index]->priv_data;
int64_t pos;
int au_byterate, au_ssize, au_scale;
avio_flush(pb);
pos = avio_tell(pb);
/* Updating one entry in the AVI OpenDML master index */
avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
ffio_wfourcc(pb, "indx"); /* enabling this entry */
avio_skip(pb, 8);
avio_wl32(pb, avi->riff_id - avist->indexes.master_odml_riff_id_base); /* nEntriesInUse */
avio_skip(pb, 16 * (avi->riff_id - avist->indexes.master_odml_riff_id_base));
avio_wl64(pb, ix); /* qwOffset */
avio_wl32(pb, size); /* dwSize */
ff_parse_specific_params(s->streams[stream_index], &au_byterate, &au_ssize, &au_scale);
if (s->streams[stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO && au_ssize > 0) {
uint32_t audio_segm_size = (avist->audio_strm_length - avist->indexes.audio_strm_offset);
if ((audio_segm_size % au_ssize > 0) && !avist->sample_requested) {
avpriv_request_sample(s, "OpenDML index duration for audio packets with partial frames");
avist->sample_requested = 1;
}
avio_wl32(pb, audio_segm_size / au_ssize); /* dwDuration (sample count) */
} else
avio_wl32(pb, avist->indexes.entry); /* dwDuration (packet count) */
avio_seek(pb, pos, SEEK_SET);
}
static int avi_write_header(AVFormatContext *s)
{
AVIContext *avi = s->priv_data;
AVIOContext *pb = s->pb;
int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
AVCodecContext *stream, *video_enc;
int64_t list1, list2, strh, strf;
AVDictionaryEntry *t = NULL;
if (s->nb_streams > AVI_MAX_STREAM_COUNT) {
av_log(s, AV_LOG_ERROR, "AVI does not support >%d streams\n",
AVI_MAX_STREAM_COUNT);
return AVERROR(EINVAL);
}
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(s, pb, "AVI ", "hdrl");
/* avi header */
ffio_wfourcc(pb, "avih");
avio_wl32(pb, 14 * 4);
bitrate = 0;
video_enc = NULL;
for(n=0;n<s->nb_streams;n++) {
stream = s->streams[n]->codec;
bitrate += stream->bit_rate;
if (stream->codec_type == AVMEDIA_TYPE_VIDEO)
video_enc = stream;
}
nb_frames = 0;
if(video_enc){
avio_wl32(pb, (uint32_t)(INT64_C(1000000) * video_enc->time_base.num / video_enc->time_base.den));
} else {
avio_wl32(pb, 0);
}
avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */
avio_wl32(pb, 0); /* padding */
if (!pb->seekable)
avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
else
avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */
avio_wl32(pb, nb_frames); /* nb frames, filled later */
avio_wl32(pb, 0); /* initial frame */
avio_wl32(pb, s->nb_streams); /* nb streams */
avio_wl32(pb, 1024 * 1024); /* suggested buffer size */
if(video_enc){
avio_wl32(pb, video_enc->width);
avio_wl32(pb, video_enc->height);
} else {
avio_wl32(pb, 0);
avio_wl32(pb, 0);
}
avio_wl32(pb, 0); /* reserved */
avio_wl32(pb, 0); /* reserved */
avio_wl32(pb, 0); /* reserved */
avio_wl32(pb, 0); /* reserved */
/* stream list */
for(i=0;i<n;i++) {
AVIStream *avist= s->streams[i]->priv_data;
list2 = ff_start_tag(pb, "LIST");
ffio_wfourcc(pb, "strl");
stream = s->streams[i]->codec;
/* stream generic header */
strh = ff_start_tag(pb, "strh");
switch(stream->codec_type) {
case AVMEDIA_TYPE_SUBTITLE:
// XSUB subtitles behave like video tracks, other subtitles
// are not (yet) supported.
if (stream->codec_id != AV_CODEC_ID_XSUB) {
av_log(s, AV_LOG_ERROR, "Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n");
return AVERROR_PATCHWELCOME;
}
case AVMEDIA_TYPE_VIDEO: ffio_wfourcc(pb, "vids"); break;
case AVMEDIA_TYPE_AUDIO: ffio_wfourcc(pb, "auds"); break;
// case AVMEDIA_TYPE_TEXT : ffio_wfourcc(pb, "txts"); break;
case AVMEDIA_TYPE_DATA : ffio_wfourcc(pb, "dats"); break;
}
if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
stream->codec_id == AV_CODEC_ID_XSUB)
avio_wl32(pb, stream->codec_tag);
else
avio_wl32(pb, 1);
avio_wl32(pb, 0); /* flags */
avio_wl16(pb, 0); /* priority */
avio_wl16(pb, 0); /* language */
avio_wl32(pb, 0); /* initial frame */
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
if ( stream->codec_type == AVMEDIA_TYPE_VIDEO
&& stream->codec_id != AV_CODEC_ID_XSUB
&& au_byterate > 1000LL*au_scale) {
au_byterate = 600;
au_scale = 1;
}
avpriv_set_pts_info(s->streams[i], 64, au_scale, au_byterate);
if(stream->codec_id == AV_CODEC_ID_XSUB)
au_scale = au_byterate = 0;
avio_wl32(pb, au_scale); /* scale */
avio_wl32(pb, au_byterate); /* rate */
avio_wl32(pb, 0); /* start */
avist->frames_hdr_strm = avio_tell(pb); /* remember this offset to fill later */
if (!pb->seekable)
avio_wl32(pb, AVI_MAX_RIFF_SIZE); /* FIXME: this may be broken, but who cares */
else
avio_wl32(pb, 0); /* length, XXX: filled later */
/* suggested buffer size */ //FIXME set at the end to largest chunk
if(stream->codec_type == AVMEDIA_TYPE_VIDEO)
avio_wl32(pb, 1024 * 1024);
else if(stream->codec_type == AVMEDIA_TYPE_AUDIO)
avio_wl32(pb, 12 * 1024);
else
avio_wl32(pb, 0);
avio_wl32(pb, -1); /* quality */
avio_wl32(pb, au_ssize); /* sample size */
avio_wl32(pb, 0);
avio_wl16(pb, stream->width);
avio_wl16(pb, stream->height);
ff_end_tag(pb, strh);
if(stream->codec_type != AVMEDIA_TYPE_DATA){
int ret;
strf = ff_start_tag(pb, "strf");
switch(stream->codec_type) {
case AVMEDIA_TYPE_SUBTITLE:
// XSUB subtitles behave like video tracks, other subtitles
// are not (yet) supported.
if (stream->codec_id != AV_CODEC_ID_XSUB) break;
case AVMEDIA_TYPE_VIDEO:
ff_put_bmp_header(pb, stream, ff_codec_bmp_tags, 0, 0);
break;
case AVMEDIA_TYPE_AUDIO:
if ((ret = ff_put_wav_header(pb, stream)) < 0) {
return ret;
}
break;
default:
av_log(s, AV_LOG_ERROR,
"Invalid or not supported codec type '%s' found in the input\n",
(char *)av_x_if_null(av_get_media_type_string(stream->codec_type), "?"));
return AVERROR(EINVAL);
}
ff_end_tag(pb, strf);
if ((t = av_dict_get(s->streams[i]->metadata, "title", NULL, 0))) {
ff_riff_write_info_tag(s->pb, "strn", t->value);
t = NULL;
}
if(stream->codec_id == AV_CODEC_ID_XSUB
&& (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) {
const char* langstr = av_convert_lang_to(t->value, AV_LANG_ISO639_1);
t = NULL;
if (langstr) {
char* str = av_asprintf("Subtitle - %s-xx;02", langstr);
ff_riff_write_info_tag(s->pb, "strn", str);
av_free(str);
}
}
}
if (pb->seekable) {
unsigned char tag[5];
int j;
/* Starting to lay out AVI OpenDML master index.
* We want to make it JUNK entry for now, since we'd
* like to get away without making AVI an OpenDML one
* for compatibility reasons.
*/
avist->indexes.entry = avist->indexes.ents_allocated = 0;
avist->indexes.indx_start = ff_start_tag(pb, "JUNK");
avio_wl16(pb, 4); /* wLongsPerEntry */
avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
avio_w8(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
avio_wl32(pb, 0); /* nEntriesInUse (will fill out later on) */
ffio_wfourcc(pb, avi_stream2fourcc(tag, i, stream->codec_type));
/* dwChunkId */
avio_wl64(pb, 0); /* dwReserved[3]
avio_wl32(pb, 0); Must be 0. */
for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
avio_wl64(pb, 0);
ff_end_tag(pb, avist->indexes.indx_start);
}
if( stream->codec_type == AVMEDIA_TYPE_VIDEO
&& s->streams[i]->sample_aspect_ratio.num>0
&& s->streams[i]->sample_aspect_ratio.den>0){
int vprp= ff_start_tag(pb, "vprp");
AVRational dar = av_mul_q(s->streams[i]->sample_aspect_ratio,
(AVRational){stream->width, stream->height});
int num, den;
av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
avio_wl32(pb, 0); //video format = unknown
avio_wl32(pb, 0); //video standard= unknown
avio_wl32(pb, lrintf(1.0/av_q2d(stream->time_base)));
avio_wl32(pb, stream->width );
avio_wl32(pb, stream->height);
avio_wl16(pb, den);
avio_wl16(pb, num);
avio_wl32(pb, stream->width );
avio_wl32(pb, stream->height);
avio_wl32(pb, 1); //progressive FIXME
avio_wl32(pb, stream->height);
avio_wl32(pb, stream->width );
avio_wl32(pb, stream->height);
avio_wl32(pb, stream->width );
avio_wl32(pb, 0);
avio_wl32(pb, 0);
avio_wl32(pb, 0);
avio_wl32(pb, 0);
ff_end_tag(pb, vprp);
}
ff_end_tag(pb, list2);
}
if (pb->seekable) {
/* AVI could become an OpenDML one, if it grows beyond 2Gb range */
avi->odml_list = ff_start_tag(pb, "JUNK");
ffio_wfourcc(pb, "odml");
ffio_wfourcc(pb, "dmlh");
avio_wl32(pb, 248);
for (i = 0; i < 248; i+= 4)
avio_wl32(pb, 0);
ff_end_tag(pb, avi->odml_list);
}
ff_end_tag(pb, list1);
ff_riff_write_info(s);
/* some padding for easier tag editing */
list2 = ff_start_tag(pb, "JUNK");
for (i = 0; i < 1016; i += 4)
avio_wl32(pb, 0);
ff_end_tag(pb, list2);
avi->movi_list = ff_start_tag(pb, "LIST");
ffio_wfourcc(pb, "movi");
avio_flush(pb);
return 0;
}
static int avi_write_header(AVFormatContext *s)
{
AVIContext *avi = s->priv_data;
ByteIOContext *pb = &s->pb;
int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
AVCodecContext *stream, *video_enc;
offset_t list1, list2, strh, strf;
/* header list */
avi->riff_id = 0;
list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
/* avi header */
put_tag(pb, "avih");
put_le32(pb, 14 * 4);
bitrate = 0;
video_enc = NULL;
for(n=0;n<s->nb_streams;n++) {
stream = s->streams[n]->codec;
bitrate += stream->bit_rate;
if (stream->codec_type == CODEC_TYPE_VIDEO)
video_enc = stream;
}
nb_frames = 0;
if(video_enc){
put_le32(pb, (uint32_t)(INT64_C(1000000) * video_enc->time_base.num / video_enc->time_base.den));
} else {
put_le32(pb, 0);
}
put_le32(pb, bitrate / 8); /* XXX: not quite exact */
put_le32(pb, 0); /* padding */
if (url_is_streamed(pb))
put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
else
put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
put_le32(pb, nb_frames); /* nb frames, filled later */
put_le32(pb, 0); /* initial frame */
put_le32(pb, s->nb_streams); /* nb streams */
put_le32(pb, 1024 * 1024); /* suggested buffer size */
if(video_enc){
put_le32(pb, video_enc->width);
put_le32(pb, video_enc->height);
} else {
put_le32(pb, 0);
put_le32(pb, 0);
}
put_le32(pb, 0); /* reserved */
put_le32(pb, 0); /* reserved */
put_le32(pb, 0); /* reserved */
put_le32(pb, 0); /* reserved */
/* stream list */
for(i=0;i<n;i++) {
list2 = start_tag(pb, "LIST");
put_tag(pb, "strl");
stream = s->streams[i]->codec;
/* FourCC should really be set by the codec itself */
if (! stream->codec_tag) {
stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
}
/* stream generic header */
strh = start_tag(pb, "strh");
switch(stream->codec_type) {
case CODEC_TYPE_VIDEO: put_tag(pb, "vids"); break;
case CODEC_TYPE_AUDIO: put_tag(pb, "auds"); break;
// case CODEC_TYPE_TEXT : put_tag(pb, "txts"); break;
case CODEC_TYPE_DATA : put_tag(pb, "dats"); break;
}
if(stream->codec_type == CODEC_TYPE_VIDEO)
put_le32(pb, stream->codec_tag);
else
put_le32(pb, 1);
put_le32(pb, 0); /* flags */
put_le16(pb, 0); /* priority */
put_le16(pb, 0); /* language */
put_le32(pb, 0); /* initial frame */
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
put_le32(pb, au_scale); /* scale */
put_le32(pb, au_byterate); /* rate */
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 */
if (url_is_streamed(pb))
put_le32(pb, AVI_MAX_RIFF_SIZE); /* FIXME: this may be broken, but who cares */
else
put_le32(pb, 0); /* length, XXX: filled later */
/* suggested buffer size */ //FIXME set at the end to largest chunk
if(stream->codec_type == CODEC_TYPE_VIDEO)
put_le32(pb, 1024 * 1024);
else if(stream->codec_type == CODEC_TYPE_AUDIO)
put_le32(pb, 12 * 1024);
else
put_le32(pb, 0);
put_le32(pb, -1); /* quality */
put_le32(pb, au_ssize); /* sample size */
put_le32(pb, 0);
put_le16(pb, stream->width);
put_le16(pb, stream->height);
end_tag(pb, strh);
if(stream->codec_type != CODEC_TYPE_DATA){
strf = start_tag(pb, "strf");
switch(stream->codec_type) {
case CODEC_TYPE_VIDEO:
put_bmp_header(pb, stream, codec_bmp_tags, 0);
break;
case CODEC_TYPE_AUDIO:
if (put_wav_header(pb, stream) < 0) {
av_free(avi);
return -1;
}
break;
default:
return -1;
}
end_tag(pb, strf);
}
if (!url_is_streamed(pb)) {
unsigned char tag[5];
int j;
/* Starting to lay out AVI OpenDML master index.
* We want to make it JUNK entry for now, since we'd
* 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 = 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) */
put_le32(pb, 0); /* nEntriesInUse (will fill out later on) */
put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
/* dwChunkId */
put_le64(pb, 0); /* dwReserved[3]
put_le32(pb, 0); Must be 0. */
for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
put_le64(pb, 0);
end_tag(pb, avi->indexes[i].indx_start);
}
end_tag(pb, list2);
}
if (!url_is_streamed(pb)) {
/* AVI could become an OpenDML one, if it grows beyond 2Gb range */
avi->odml_list = start_tag(pb, "JUNK");
put_tag(pb, "odml");
put_tag(pb, "dmlh");
put_le32(pb, 248);
for (i = 0; i < 248; i+= 4)
put_le32(pb, 0);
end_tag(pb, avi->odml_list);
}
end_tag(pb, list1);
list2 = start_tag(pb, "LIST");
put_tag(pb, "INFO");
avi_write_info_tag(pb, "INAM", s->title);
avi_write_info_tag(pb, "IART", s->author);
avi_write_info_tag(pb, "ICOP", s->copyright);
avi_write_info_tag(pb, "ICMT", s->comment);
avi_write_info_tag(pb, "IPRD", s->album);
avi_write_info_tag(pb, "IGNR", s->genre);
if (s->track) {
char str_track[4];
snprintf(str_track, 4, "%d", s->track);
avi_write_info_tag(pb, "IPRT", str_track);
}
if(!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
avi_write_info_tag(pb, "ISFT", LIBAVFORMAT_IDENT);
end_tag(pb, list2);
/* some padding for easier tag editing */
list2 = start_tag(pb, "JUNK");
for (i = 0; i < 1016; i += 4)
put_le32(pb, 0);
end_tag(pb, list2);
avi->movi_list = start_tag(pb, "LIST");
put_tag(pb, "movi");
put_flush_packet(pb);
return 0;
}
static int avi_write_idx1(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
AVIContext *avi = s->priv_data;
offset_t file_size, idx_chunk;
int i, n, nb_frames, au_byterate, au_ssize, au_scale;
AVCodecContext *stream;
unsigned char tag[5];
if (!url_is_streamed(pb)) {
AVIIentry* ie = 0, *tie;
int entry[MAX_STREAMS];
int empty, stream_id = -1;
idx_chunk = start_tag(pb, "idx1");
memset(&entry[0], 0, sizeof(entry));
do {
empty = 1;
for (i=0; i<s->nb_streams; i++) {
if (avi->indexes[i].entry <= entry[i])
continue;
tie = avi_get_ientry(&avi->indexes[i], entry[i]);
if (empty || tie->pos < ie->pos) {
ie = tie;
stream_id = i;
}
empty = 0;
}
if (!empty) {
avi_stream2fourcc(&tag[0], stream_id,
s->streams[stream_id]->codec->codec_type);
put_tag(pb, &tag[0]);
put_le32(pb, ie->flags);
put_le32(pb, ie->pos);
put_le32(pb, ie->len);
entry[stream_id]++;
}
} while (!empty);
end_tag(pb, idx_chunk);
/* Fill in frame/sample counters */
file_size = url_ftell(pb);
nb_frames = 0;
for(n=0;n<s->nb_streams;n++) {
assert(avi->frames_hdr_strm[n]);
stream = s->streams[n]->codec;
url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
if (au_ssize == 0) {
put_le32(pb, avi->packet_count[n]);
} else {
put_le32(pb, avi->audio_strm_length[n] / au_ssize);
}
if(stream->codec_type == CODEC_TYPE_VIDEO)
nb_frames = FFMAX(nb_frames, avi->packet_count[n]);
}
assert(avi->frames_hdr_all);
url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
put_le32(pb, nb_frames);
url_fseek(pb, file_size, SEEK_SET);
}
return 0;
}
static int avi_write_header(AVFormatContext *s)
{
AVIContext *avi = s->priv_data;
AVIOContext *pb = s->pb;
int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
AVCodecContext *video_enc;
AVStream *video_st = NULL;
int64_t list1, list2, strh, strf;
AVDictionaryEntry *t = NULL;
int padding;
if (s->nb_streams > AVI_MAX_STREAM_COUNT) {
av_log(s, AV_LOG_ERROR, "AVI does not support >%d streams\n",
AVI_MAX_STREAM_COUNT);
return AVERROR(EINVAL);
}
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(s, pb, "AVI ", "hdrl");
/* avi header */
ffio_wfourcc(pb, "avih");
avio_wl32(pb, 14 * 4);
bitrate = 0;
video_enc = NULL;
for (n = 0; n < s->nb_streams; n++) {
AVCodecContext *codec = s->streams[n]->codec;
bitrate += codec->bit_rate;
if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
video_enc = codec;
video_st = s->streams[n];
}
}
nb_frames = 0;
// TODO: should be avg_frame_rate
if (video_st)
avio_wl32(pb, (uint32_t) (INT64_C(1000000) * video_st->time_base.num /
video_st->time_base.den));
else
avio_wl32(pb, 0);
avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */
avio_wl32(pb, 0); /* padding */
if (!pb->seekable)
avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
else
avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */
avio_wl32(pb, nb_frames); /* nb frames, filled later */
avio_wl32(pb, 0); /* initial frame */
avio_wl32(pb, s->nb_streams); /* nb streams */
avio_wl32(pb, 1024 * 1024); /* suggested buffer size */
if (video_enc) {
avio_wl32(pb, video_enc->width);
avio_wl32(pb, video_enc->height);
} else {
avio_wl32(pb, 0);
avio_wl32(pb, 0);
}
avio_wl32(pb, 0); /* reserved */
avio_wl32(pb, 0); /* reserved */
avio_wl32(pb, 0); /* reserved */
avio_wl32(pb, 0); /* reserved */
/* stream list */
for (i = 0; i < n; i++) {
AVStream *st = s->streams[i];
AVCodecContext *enc = st->codec;
AVIStream *avist = st->priv_data;
list2 = ff_start_tag(pb, "LIST");
ffio_wfourcc(pb, "strl");
/* stream generic header */
strh = ff_start_tag(pb, "strh");
switch (enc->codec_type) {
case AVMEDIA_TYPE_SUBTITLE:
// XSUB subtitles behave like video tracks, other subtitles
// are not (yet) supported.
if (enc->codec_id != AV_CODEC_ID_XSUB) {
av_log(s, AV_LOG_ERROR,
"Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n");
return AVERROR_PATCHWELCOME;
}
case AVMEDIA_TYPE_VIDEO:
ffio_wfourcc(pb, "vids");
break;
case AVMEDIA_TYPE_AUDIO:
ffio_wfourcc(pb, "auds");
break;
// case AVMEDIA_TYPE_TEXT:
// ffio_wfourcc(pb, "txts");
// break;
case AVMEDIA_TYPE_DATA:
ffio_wfourcc(pb, "dats");
break;
}
if (enc->codec_type == AVMEDIA_TYPE_VIDEO ||
enc->codec_id == AV_CODEC_ID_XSUB)
avio_wl32(pb, enc->codec_tag);
else
avio_wl32(pb, 1);
avio_wl32(pb, 0); /* flags */
avio_wl16(pb, 0); /* priority */
avio_wl16(pb, 0); /* language */
avio_wl32(pb, 0); /* initial frame */
ff_parse_specific_params(st, &au_byterate, &au_ssize, &au_scale);
if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
&& enc->codec_id != AV_CODEC_ID_XSUB
&& au_byterate > 1000LL*au_scale) {
au_byterate = 600;
au_scale = 1;
}
avpriv_set_pts_info(st, 64, au_scale, au_byterate);
if (enc->codec_id == AV_CODEC_ID_XSUB)
au_scale = au_byterate = 0;
avio_wl32(pb, au_scale); /* scale */
avio_wl32(pb, au_byterate); /* rate */
avio_wl32(pb, 0); /* start */
/* remember this offset to fill later */
avist->frames_hdr_strm = avio_tell(pb);
if (!pb->seekable)
/* FIXME: this may be broken, but who cares */
avio_wl32(pb, AVI_MAX_RIFF_SIZE);
else
avio_wl32(pb, 0); /* length, XXX: filled later */
/* suggested buffer size, is set to largest chunk size in avi_write_trailer */
if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
avio_wl32(pb, 1024 * 1024);
else if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
avio_wl32(pb, 12 * 1024);
else
avio_wl32(pb, 0);
avio_wl32(pb, -1); /* quality */
avio_wl32(pb, au_ssize); /* sample size */
avio_wl32(pb, 0);
avio_wl16(pb, enc->width);
avio_wl16(pb, enc->height);
ff_end_tag(pb, strh);
if (enc->codec_type != AVMEDIA_TYPE_DATA) {
int ret;
enum AVPixelFormat pix_fmt;
strf = ff_start_tag(pb, "strf");
switch (enc->codec_type) {
case AVMEDIA_TYPE_SUBTITLE:
/* XSUB subtitles behave like video tracks, other subtitles
* are not (yet) supported. */
if (enc->codec_id != AV_CODEC_ID_XSUB)
break;
case AVMEDIA_TYPE_VIDEO:
/* WMP expects RGB 5:5:5 rawvideo in avi to have bpp set to 16. */
if ( !enc->codec_tag
&& enc->codec_id == AV_CODEC_ID_RAWVIDEO
&& enc->pix_fmt == AV_PIX_FMT_RGB555LE
&& enc->bits_per_coded_sample == 15)
enc->bits_per_coded_sample = 16;
ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 0, 0);
pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi,
enc->bits_per_coded_sample);
if ( !enc->codec_tag
&& enc->codec_id == AV_CODEC_ID_RAWVIDEO
&& enc->pix_fmt != pix_fmt
&& enc->pix_fmt != AV_PIX_FMT_NONE)
av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to avi, output file will be unreadable\n",
av_get_pix_fmt_name(enc->pix_fmt));
break;
case AVMEDIA_TYPE_AUDIO:
if ((ret = ff_put_wav_header(pb, enc, 0)) < 0)
return ret;
break;
default:
av_log(s, AV_LOG_ERROR,
"Invalid or not supported codec type '%s' found in the input\n",
(char *)av_x_if_null(av_get_media_type_string(enc->codec_type), "?"));
return AVERROR(EINVAL);
}
ff_end_tag(pb, strf);
if ((t = av_dict_get(st->metadata, "title", NULL, 0))) {
ff_riff_write_info_tag(s->pb, "strn", t->value);
t = NULL;
}
if (enc->codec_id == AV_CODEC_ID_XSUB
&& (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) {
const char* langstr = av_convert_lang_to(t->value, AV_LANG_ISO639_1);
t = NULL;
if (langstr) {
char* str = av_asprintf("Subtitle - %s-xx;02", langstr);
if (!str)
return AVERROR(ENOMEM);
ff_riff_write_info_tag(s->pb, "strn", str);
av_free(str);
}
}
}
if (pb->seekable) {
write_odml_master(s, i);
}
if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
st->sample_aspect_ratio.num > 0 &&
st->sample_aspect_ratio.den > 0) {
int vprp = ff_start_tag(pb, "vprp");
AVRational dar = av_mul_q(st->sample_aspect_ratio,
(AVRational) { enc->width,
enc->height });
int num, den;
av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
avio_wl32(pb, 0); // video format = unknown
avio_wl32(pb, 0); // video standard = unknown
// TODO: should be avg_frame_rate
avio_wl32(pb, (2LL*st->time_base.den + st->time_base.num - 1) / (2LL * st->time_base.num));
avio_wl32(pb, enc->width);
avio_wl32(pb, enc->height);
avio_wl16(pb, den);
avio_wl16(pb, num);
avio_wl32(pb, enc->width);
avio_wl32(pb, enc->height);
avio_wl32(pb, 1); // progressive FIXME
avio_wl32(pb, enc->height);
avio_wl32(pb, enc->width);
avio_wl32(pb, enc->height);
avio_wl32(pb, enc->width);
avio_wl32(pb, 0);
avio_wl32(pb, 0);
avio_wl32(pb, 0);
avio_wl32(pb, 0);
ff_end_tag(pb, vprp);
}
ff_end_tag(pb, list2);
}
if (pb->seekable) {
/* AVI could become an OpenDML one, if it grows beyond 2Gb range */
avi->odml_list = ff_start_tag(pb, "JUNK");
ffio_wfourcc(pb, "odml");
ffio_wfourcc(pb, "dmlh");
avio_wl32(pb, 248);
for (i = 0; i < 248; i += 4)
avio_wl32(pb, 0);
ff_end_tag(pb, avi->odml_list);
}
ff_end_tag(pb, list1);
ff_riff_write_info(s);
padding = s->metadata_header_padding;
if (padding < 0)
padding = 1016;
/* some padding for easier tag editing */
if (padding) {
list2 = ff_start_tag(pb, "JUNK");
for (i = padding; i > 0; i -= 4)
avio_wl32(pb, 0);
ff_end_tag(pb, list2);
}
avi->movi_list = ff_start_tag(pb, "LIST");
ffio_wfourcc(pb, "movi");
avio_flush(pb);
return 0;
}
static int avi_write_ix(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
AVIContext *avi = s->priv_data;
char tag[5];
char ix_tag[] = "ix00";
int i, j;
av_assert0(pb->seekable);
if (avi->riff_id > AVI_MASTER_INDEX_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid riff index %d > %d\n",
avi->riff_id, AVI_MASTER_INDEX_SIZE);
return AVERROR(EINVAL);
}
for (i = 0; i < s->nb_streams; i++) {
AVIStream *avist = s->streams[i]->priv_data;
int64_t ix, pos;
int au_byterate, au_ssize, au_scale;
avi_stream2fourcc(tag, i, s->streams[i]->codec->codec_type);
ix_tag[3] = '0' + i;
/* Writing AVI OpenDML leaf index chunk */
ix = avio_tell(pb);
ffio_wfourcc(pb, ix_tag); /* ix?? */
avio_wl32(pb, avist->indexes.entry * 8 + 24);
/* chunk size */
avio_wl16(pb, 2); /* wLongsPerEntry */
avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
avio_wl32(pb, avist->indexes.entry);
/* nEntriesInUse */
ffio_wfourcc(pb, tag); /* dwChunkId */
avio_wl64(pb, avi->movi_list); /* qwBaseOffset */
avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */
for (j = 0; j < avist->indexes.entry; j++) {
AVIIentry *ie = avi_get_ientry(&avist->indexes, j);
avio_wl32(pb, ie->pos + 8);
avio_wl32(pb, ((uint32_t) ie->len & ~0x80000000) |
(ie->flags & 0x10 ? 0 : 0x80000000));
}
avio_flush(pb);
pos = avio_tell(pb);
/* Updating one entry in the AVI OpenDML master index */
avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
ffio_wfourcc(pb, "indx"); /* enabling this entry */
avio_skip(pb, 8);
avio_wl32(pb, avi->riff_id); /* nEntriesInUse */
avio_skip(pb, 16 * avi->riff_id);
avio_wl64(pb, ix); /* qwOffset */
avio_wl32(pb, pos - ix); /* dwSize */
ff_parse_specific_params(s->streams[i], &au_byterate, &au_ssize, &au_scale);
if (s->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO && au_ssize > 0) {
uint32_t audio_segm_size = (avist->audio_strm_length - avist->indexes.audio_strm_offset);
if ((audio_segm_size % au_ssize > 0) && !avist->sample_requested) {
avpriv_request_sample(s, "OpenDML index duration for audio packets with partial frames");
avist->sample_requested = 1;
}
avio_wl32(pb, audio_segm_size / au_ssize); /* dwDuration (sample count) */
} else
avio_wl32(pb, avist->indexes.entry); /* dwDuration (packet count) */
avio_seek(pb, pos, SEEK_SET);
}
return 0;
}
