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yuv4mpegdec: do not set coded_frame properties

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coded_frame is not meant to be changed from outside of lavc, and is not
used for decoding.
Set AVCodecContext.field_order instead.
This commit is contained in:
Anton Khirnov 2014-05-03 11:08:25 +02:00
parent e4dc1000d7
commit b513bf6f69
1 changed files with 6 additions and 20 deletions
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26
libavformat/yuv4mpegdec.c
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@ -27,11 +27,6 @@
#define MAX_YUV4_HEADER 80
#define MAX_FRAME_HEADER 80
struct frame_attributes {
int interlaced_frame;
int top_field_first;
};
static int yuv4_read_header(AVFormatContext *s)
{
char header[MAX_YUV4_HEADER + 10]; // Include headroom for
@ -44,7 +39,7 @@ static int yuv4_read_header(AVFormatContext *s)
enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE, alt_pix_fmt = AV_PIX_FMT_NONE;
enum AVChromaLocation chroma_sample_location = AVCHROMA_LOC_UNSPECIFIED;
AVStream *st;
struct frame_attributes *s1 = s->priv_data;
enum AVFieldOrder field_order;
for (i = 0; i < MAX_YUV4_HEADER; i++) {
header[i] = avio_r8(pb);
@ -60,8 +55,6 @@ static int yuv4_read_header(AVFormatContext *s)
if (strncmp(header, Y4M_MAGIC, strlen(Y4M_MAGIC)))
return -1;
s1->interlaced_frame = 0;
s1->top_field_first = 0;
header_end = &header[i + 1]; // Include space
for (tokstart = &header[strlen(Y4M_MAGIC) + 1];
tokstart < header_end; tokstart++) {
@ -112,17 +105,16 @@ static int yuv4_read_header(AVFormatContext *s)
case 'I': // Interlace type
switch (*tokstart++){
case '?':
field_order = AV_FIELD_UNKNOWN;
break;
case 'p':
s1->interlaced_frame = 0;
field_order = AV_FIELD_PROGRESSIVE;
break;
case 't':
s1->interlaced_frame = 1;
s1->top_field_first = 1;
field_order = AV_FIELD_TT;
break;
case 'b':
s1->interlaced_frame = 1;
s1->top_field_first = 0;
field_order = AV_FIELD_BB;
break;
case 'm':
av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains mixed "
@ -202,6 +194,7 @@ static int yuv4_read_header(AVFormatContext *s)
st->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
st->sample_aspect_ratio = (AVRational){ aspectn, aspectd };
st->codec->chroma_sample_location = chroma_sample_location;
st->codec->field_order = field_order;
return 0;
}
@ -212,7 +205,6 @@ static int yuv4_read_packet(AVFormatContext *s, AVPacket *pkt)
char header[MAX_FRAME_HEADER+1];
int packet_size, width, height, ret;
AVStream *st = s->streams[0];
struct frame_attributes *s1 = s->priv_data;
for (i = 0; i < MAX_FRAME_HEADER; i++) {
header[i] = avio_r8(s->pb);
@ -244,11 +236,6 @@ static int yuv4_read_packet(AVFormatContext *s, AVPacket *pkt)
else if (ret != packet_size)
return s->pb->eof_reached ? AVERROR_EOF : AVERROR(EIO);
if (st->codec->coded_frame) {
st->codec->coded_frame->interlaced_frame = s1->interlaced_frame;
st->codec->coded_frame->top_field_first = s1->top_field_first;
}
pkt->stream_index = 0;
return 0;
}
@ -265,7 +252,6 @@ static int yuv4_probe(AVProbeData *pd)
AVInputFormat ff_yuv4mpegpipe_demuxer = {
.name = "yuv4mpegpipe",
.long_name = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"),
.priv_data_size = sizeof(struct frame_attributes),
.read_probe = yuv4_probe,
.read_header = yuv4_read_header,
.read_packet = yuv4_read_packet,