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avformat: reuse the common code for v210/v210x

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As suggested by Andreas Rheinhardt, most code of v210 demuxer is common code
which is duplicated from rawvideodec, so it's better to move v210/v210x
demuxer code to rawvideodec.c and reuse the common code.

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2021-12-22 23:07:38 +08:00
parent 46f43f222e
commit 41f213c3bf
2 changed files with 52 additions and 6 deletions
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4
libavformat/Makefile
View File

@ -560,8 +560,8 @@ OBJS-$(CONFIG_TTY_DEMUXER) += tty.o sauce.o
OBJS-$(CONFIG_TY_DEMUXER) += ty.o
OBJS-$(CONFIG_TXD_DEMUXER) += txd.o
OBJS-$(CONFIG_UNCODEDFRAMECRC_MUXER) += uncodedframecrcenc.o framehash.o
OBJS-$(CONFIG_V210_DEMUXER) += v210.o
OBJS-$(CONFIG_V210X_DEMUXER) += v210.o
OBJS-$(CONFIG_V210_DEMUXER) += rawvideodec.o
OBJS-$(CONFIG_V210X_DEMUXER) += rawvideodec.o
OBJS-$(CONFIG_VAG_DEMUXER) += vag.o
OBJS-$(CONFIG_VC1_DEMUXER) += rawdec.o vc1dec.o
OBJS-$(CONFIG_VC1_MUXER) += rawenc.o

54
libavformat/rawvideodec.c
View File

@ -33,6 +33,8 @@ typedef struct RawVideoDemuxerContext {
AVRational framerate; /**< AVRational describing framerate, set by a private option. */
} RawVideoDemuxerContext;
// v210 frame width is padded to multiples of 48
#define GET_PACKET_SIZE(w, h) (((w + 47) / 48) * 48 * h * 8 / 3)
static int rawvideo_read_header(AVFormatContext *ctx)
{
@ -49,10 +51,13 @@ static int rawvideo_read_header(AVFormatContext *ctx)
st->codecpar->codec_id = ctx->iformat->raw_codec_id;
if ((pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "No such pixel format: %s.\n",
s->pixel_format);
return AVERROR(EINVAL);
if ((ctx->iformat->raw_codec_id != AV_CODEC_ID_V210) &&
(ctx->iformat->raw_codec_id != AV_CODEC_ID_V210X)) {
if ((pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "No such pixel format: %s.\n",
s->pixel_format);
return AVERROR(EINVAL);
}
}
avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
@ -84,6 +89,12 @@ static int rawvideo_read_header(AVFormatContext *ctx)
}
st->codecpar->codec_tag = tag;
packet_size = s->width * s->height * pgroup / xinc;
} else if ((ctx->iformat->raw_codec_id == AV_CODEC_ID_V210) ||
(ctx->iformat->raw_codec_id == AV_CODEC_ID_V210X)) {
pix_fmt = ctx->iformat->raw_codec_id == AV_CODEC_ID_V210 ?
AV_PIX_FMT_YUV422P10 : AV_PIX_FMT_YUV422P16;
packet_size = GET_PACKET_SIZE(s->width, s->height);
} else {
packet_size = av_image_get_buffer_size(pix_fmt, s->width, s->height, 1);
if (packet_size < 0)
@ -160,3 +171,38 @@ const AVInputFormat ff_bitpacked_demuxer = {
.priv_class = &bitpacked_demuxer_class,
};
#endif // CONFIG_BITPACKED_DEMUXER
static const AVClass v210_demuxer_class = {
.class_name = "v210(x) demuxer",
.item_name = av_default_item_name,
.option = rawvideo_options,
.version = LIBAVUTIL_VERSION_INT,
};
#if CONFIG_V210_DEMUXER
const AVInputFormat ff_v210_demuxer = {
.name = "v210",
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
.priv_data_size = sizeof(RawVideoDemuxerContext),
.read_header = rawvideo_read_header,
.read_packet = rawvideo_read_packet,
.flags = AVFMT_GENERIC_INDEX,
.extensions = "v210",
.raw_codec_id = AV_CODEC_ID_V210,
.priv_class = &v210_demuxer_class,
};
#endif // CONFIG_V210_DEMUXER
#if CONFIG_V210X_DEMUXER
const AVInputFormat ff_v210x_demuxer = {
.name = "v210x",
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
.priv_data_size = sizeof(RawVideoDemuxerContext),
.read_header = rawvideo_read_header,
.read_packet = rawvideo_read_packet,
.flags = AVFMT_GENERIC_INDEX,
.extensions = "yuv10",
.raw_codec_id = AV_CODEC_ID_V210X,
.priv_class = &v210_demuxer_class,
};
#endif // CONFIG_V210X_DEMUXER