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Latest Coktel Vision VMDs contained Indeo 3, add demuxer support for it 

Originally committed as revision 16363 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2008-12-27 17:34:00 +00:00
parent edf7c2b26f
commit 10f35ebddd
1 changed files with 15 additions and 3 deletions
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18
libavformat/sierravmd.c
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@ -49,6 +49,7 @@ typedef struct VmdDemuxContext {
unsigned int frames_per_block;
vmd_frame *frame_table;
unsigned int current_frame;
int is_indeo3;
int sample_rate;
int64_t audio_sample_counter;
@ -91,6 +92,10 @@ static int vmd_read_header(AVFormatContext *s,
if (get_buffer(pb, vmd->vmd_header, VMD_HEADER_SIZE) != VMD_HEADER_SIZE)
return AVERROR(EIO);
if(vmd->vmd_header[16] == 'i' && vmd->vmd_header[17] == 'v' && vmd->vmd_header[18] == '3')
vmd->is_indeo3 = 1;
else
vmd->is_indeo3 = 1;
/* start up the decoders */
vst = av_new_stream(s, 0);
if (!vst)
@ -98,10 +103,14 @@ static int vmd_read_header(AVFormatContext *s,
av_set_pts_info(vst, 33, 1, 10);
vmd->video_stream_index = vst->index;
vst->codec->codec_type = CODEC_TYPE_VIDEO;
vst->codec->codec_id = CODEC_ID_VMDVIDEO;
vst->codec->codec_id = vmd->is_indeo3 ? CODEC_ID_INDEO3 : CODEC_ID_VMDVIDEO;
vst->codec->codec_tag = 0; /* no fourcc */
vst->codec->width = AV_RL16(&vmd->vmd_header[12]);
vst->codec->height = AV_RL16(&vmd->vmd_header[14]);
if(vmd->is_indeo3 && vst->codec->width > 320){
vst->codec->width >>= 1;
vst->codec->height >>= 1;
}
vst->codec->extradata_size = VMD_HEADER_SIZE;
vst->codec->extradata = av_mallocz(VMD_HEADER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
memcpy(vst->codec->extradata, vmd->vmd_header, VMD_HEADER_SIZE);
@ -261,8 +270,11 @@ static int vmd_read_packet(AVFormatContext *s,
return AVERROR(ENOMEM);
pkt->pos= url_ftell(pb);
memcpy(pkt->data, frame->frame_record, BYTES_PER_FRAME_RECORD);
ret = get_buffer(pb, pkt->data + BYTES_PER_FRAME_RECORD,
frame->frame_size);
if(vmd->is_indeo3)
ret = get_buffer(pb, pkt->data, frame->frame_size);
else
ret = get_buffer(pb, pkt->data + BYTES_PER_FRAME_RECORD,
frame->frame_size);
if (ret != frame->frame_size) {
av_free_packet(pkt);