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electronicarts: move video stream properties into dedicated structure 

This is required for the alpha stream demux patch.

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Peter Ross 2015-06-25 15:04:58 +10:00 committed by Michael Niedermayer
parent 1bcdac2da3
commit a2517fca1e
1 changed files with 67 additions and 56 deletions
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123
libavformat/electronicarts.c
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@ -63,14 +63,18 @@
#define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV I-frame */
#define AVP6_TAG MKTAG('A', 'V', 'P', '6')
typedef struct EaDemuxContext {
int big_endian;
enum AVCodecID video_codec;
typedef struct VideoProperties {
enum AVCodecID codec;
AVRational time_base;
int width, height;
int nb_frames;
int video_stream_index;
int stream_index;
} VideoProperties;
typedef struct EaDemuxContext {
int big_endian;
VideoProperties video;
enum AVCodecID audio_codec;
int audio_stream_index;
@ -302,46 +306,43 @@ static void process_audio_header_sead(AVFormatContext *s)
ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_SEAD;
}
static void process_video_header_mdec(AVFormatContext *s)
static void process_video_header_mdec(AVFormatContext *s, VideoProperties *video)
{
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
avio_skip(pb, 4);
ea->width = avio_rl16(pb);
ea->height = avio_rl16(pb);
ea->time_base = (AVRational) { 1, 15 };
ea->video_codec = AV_CODEC_ID_MDEC;
video->width = avio_rl16(pb);
video->height = avio_rl16(pb);
video->time_base = (AVRational) { 1, 15 };
video->codec = AV_CODEC_ID_MDEC;
}
static int process_video_header_vp6(AVFormatContext *s)
static int process_video_header_vp6(AVFormatContext *s, VideoProperties *video)
{
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
AVIOContext *pb = s->pb;
avio_skip(pb, 8);
ea->nb_frames = avio_rl32(pb);
video->nb_frames = avio_rl32(pb);
avio_skip(pb, 4);
ea->time_base.den = avio_rl32(pb);
ea->time_base.num = avio_rl32(pb);
if (ea->time_base.den <= 0 || ea->time_base.num <= 0) {
video->time_base.den = avio_rl32(pb);
video->time_base.num = avio_rl32(pb);
if (video->time_base.den <= 0 || video->time_base.num <= 0) {
av_log(s, AV_LOG_ERROR, "Timebase is invalid\n");
return AVERROR_INVALIDDATA;
}
ea->video_codec = AV_CODEC_ID_VP6;
video->codec = AV_CODEC_ID_VP6;
return 1;
}
static void process_video_header_cmv(AVFormatContext *s)
static void process_video_header_cmv(AVFormatContext *s, VideoProperties *video)
{
EaDemuxContext *ea = s->priv_data;
int fps;
avio_skip(s->pb, 10);
fps = avio_rl16(s->pb);
if (fps)
ea->time_base = (AVRational) { 1, fps };
ea->video_codec = AV_CODEC_ID_CMV;
video->time_base = (AVRational) { 1, fps };
video->codec = AV_CODEC_ID_CMV;
}
/* Process EA file header.
@ -353,7 +354,7 @@ static int process_ea_header(AVFormatContext *s)
AVIOContext *pb = s->pb;
int i;
for (i = 0; i < 5 && (!ea->audio_codec || !ea->video_codec); i++) {
for (i = 0; i < 5 && (!ea->audio_codec || !ea->video.codec); i++) {
uint64_t startpos = avio_tell(pb);
int err = 0;
@ -395,40 +396,40 @@ static int process_ea_header(AVFormatContext *s)
break;
case MVIh_TAG:
process_video_header_cmv(s);
process_video_header_cmv(s, &ea->video);
break;
case kVGT_TAG:
ea->video_codec = AV_CODEC_ID_TGV;
ea->video.codec = AV_CODEC_ID_TGV;
break;
case mTCD_TAG:
process_video_header_mdec(s);
process_video_header_mdec(s, &ea->video);
break;
case MPCh_TAG:
ea->video_codec = AV_CODEC_ID_MPEG2VIDEO;
ea->video.codec = AV_CODEC_ID_MPEG2VIDEO;
break;
case pQGT_TAG:
case TGQs_TAG:
ea->video_codec = AV_CODEC_ID_TGQ;
ea->time_base = (AVRational) { 1, 15 };
ea->video.codec = AV_CODEC_ID_TGQ;
ea->video.time_base = (AVRational) { 1, 15 };
break;
case pIQT_TAG:
ea->video_codec = AV_CODEC_ID_TQI;
ea->time_base = (AVRational) { 1, 15 };
ea->video.codec = AV_CODEC_ID_TQI;
ea->video.time_base = (AVRational) { 1, 15 };
break;
case MADk_TAG:
ea->video_codec = AV_CODEC_ID_MAD;
ea->video.codec = AV_CODEC_ID_MAD;
avio_skip(pb, 6);
ea->time_base = (AVRational) { avio_rl16(pb), 1000 };
ea->video.time_base = (AVRational) { avio_rl16(pb), 1000 };
break;
case MVhd_TAG:
err = process_video_header_vp6(s);
err = process_video_header_vp6(s, &ea->video);
break;
}
@ -474,6 +475,34 @@ static int ea_probe(AVProbeData *p)
return AVPROBE_SCORE_MAX;
}
static int init_video_stream(AVFormatContext *s, VideoProperties *video)
{
AVStream *st;
if (!video->codec)
return 0;
/* initialize the video decoder stream */
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
video->stream_index = st->index;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = video->codec;
// parsing is necessary to make FFmpeg generate correct timestamps
if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO)
st->need_parsing = AVSTREAM_PARSE_HEADERS;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = video->width;
st->codec->height = video->height;
st->duration = st->nb_frames = video->nb_frames;
if (video->time_base.num)
avpriv_set_pts_info(st, 64, video->time_base.num, video->time_base.den);
st->r_frame_rate =
st->avg_frame_rate = av_inv_q(video->time_base);
return 0;
}
static int ea_read_header(AVFormatContext *s)
{
EaDemuxContext *ea = s->priv_data;
@ -482,26 +511,8 @@ static int ea_read_header(AVFormatContext *s)
if (process_ea_header(s)<=0)
return AVERROR(EIO);
if (ea->video_codec) {
/* initialize the video decoder stream */
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
ea->video_stream_index = st->index;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = ea->video_codec;
// parsing is necessary to make FFmpeg generate correct timestamps
if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO)
st->need_parsing = AVSTREAM_PARSE_HEADERS;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = ea->width;
st->codec->height = ea->height;
st->duration = st->nb_frames = ea->nb_frames;
if (ea->time_base.num)
avpriv_set_pts_info(st, 64, ea->time_base.num, ea->time_base.den);
st->r_frame_rate =
st->avg_frame_rate = av_inv_q(ea->time_base);
}
if (init_video_stream(s, &ea->video))
return AVERROR(ENOMEM);
if (ea->audio_codec) {
if (ea->num_channels <= 0 || ea->num_channels > 2) {
@ -678,7 +689,7 @@ get_video_packet:
break;
}
partial_packet = chunk_type == MVIh_TAG;
pkt->stream_index = ea->video_stream_index;
pkt->stream_index = ea->video.stream_index;
pkt->flags |= key;
packet_read = 1;
break;