130 lines
4.3 KiB
C
Executable file
130 lines
4.3 KiB
C
Executable file
/*
|
|
* Raw v210 video demuxer
|
|
* Copyright (c) 2015 Tiancheng "Timothy" Gu
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/parseutils.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/opt.h"
|
|
#include "internal.h"
|
|
#include "avformat.h"
|
|
|
|
typedef struct V210DemuxerContext {
|
|
const AVClass *class; /**< Class for private options. */
|
|
int width, height; /**< Integers describing video size, set by a private option. */
|
|
AVRational framerate; /**< AVRational describing framerate, set by a private option. */
|
|
} V210DemuxerContext;
|
|
|
|
// v210 frame width is padded to multiples of 48
|
|
#define GET_PACKET_SIZE(w, h) (((w + 47) / 48) * 48 * h * 8 / 3)
|
|
|
|
static int v210_read_header(AVFormatContext *ctx)
|
|
{
|
|
V210DemuxerContext *s = ctx->priv_data;
|
|
AVStream *st;
|
|
int ret;
|
|
|
|
st = avformat_new_stream(ctx, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
|
|
st->codecpar->codec_id = ctx->iformat->raw_codec_id;
|
|
|
|
avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
|
|
|
|
ret = av_image_check_size(s->width, s->height, 0, ctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
st->codecpar->width = s->width;
|
|
st->codecpar->height = s->height;
|
|
st->codecpar->format = ctx->iformat->raw_codec_id == AV_CODEC_ID_V210 ?
|
|
AV_PIX_FMT_YUV422P10 : AV_PIX_FMT_YUV422P16;
|
|
ctx->packet_size = GET_PACKET_SIZE(s->width, s->height);
|
|
st->codecpar->bit_rate = av_rescale_q(ctx->packet_size,
|
|
(AVRational){8,1}, st->time_base);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int v210_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret;
|
|
|
|
ret = av_get_packet(s->pb, pkt, s->packet_size);
|
|
pkt->pts = pkt->dts = pkt->pos / s->packet_size;
|
|
|
|
pkt->stream_index = 0;
|
|
if (ret < 0)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(V210DemuxerContext, x)
|
|
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
|
static const AVOption v210_options[] = {
|
|
{ "video_size", "set frame size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
|
|
{ "framerate", "set frame rate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC },
|
|
{ NULL },
|
|
};
|
|
|
|
#if CONFIG_V210_DEMUXER
|
|
static const AVClass v210_demuxer_class = {
|
|
.class_name = "v210 demuxer",
|
|
.item_name = av_default_item_name,
|
|
.option = v210_options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
AVInputFormat ff_v210_demuxer = {
|
|
.name = "v210",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
|
|
.priv_data_size = sizeof(V210DemuxerContext),
|
|
.read_header = v210_read_header,
|
|
.read_packet = v210_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
|
|
static const AVClass v210x_demuxer_class = {
|
|
.class_name = "v210x demuxer",
|
|
.item_name = av_default_item_name,
|
|
.option = v210_options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
AVInputFormat ff_v210x_demuxer = {
|
|
.name = "v210x",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
|
|
.priv_data_size = sizeof(V210DemuxerContext),
|
|
.read_header = v210_read_header,
|
|
.read_packet = v210_read_packet,
|
|
.flags = AVFMT_GENERIC_INDEX,
|
|
.extensions = "yuv10",
|
|
.raw_codec_id = AV_CODEC_ID_V210X,
|
|
.priv_class = &v210x_demuxer_class,
|
|
};
|
|
#endif // CONFIG_V210X_DEMUXER
|