mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/*
|
|
* Raw Video Encoder
|
|
* Copyright (c) 2001 Fabrice Bellard
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Raw Video Encoder
|
|
*/
|
|
|
|
#include "avcodec.h"
|
|
#include "codec_internal.h"
|
|
#include "encode.h"
|
|
#include "raw.h"
|
|
#include "internal.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/internal.h"
|
|
|
|
static av_cold int raw_encode_init(AVCodecContext *avctx)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
|
|
|
|
avctx->bits_per_coded_sample = av_get_bits_per_pixel(desc);
|
|
if(!avctx->codec_tag)
|
|
avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
|
|
avctx->bit_rate = ff_guess_coded_bitrate(avctx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *frame, int *got_packet)
|
|
{
|
|
int ret = av_image_get_buffer_size(frame->format,
|
|
frame->width, frame->height, 1);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if ((ret = ff_get_encode_buffer(avctx, pkt, ret, 0)) < 0)
|
|
return ret;
|
|
if ((ret = av_image_copy_to_buffer(pkt->data, pkt->size,
|
|
(const uint8_t **)frame->data, frame->linesize,
|
|
frame->format,
|
|
frame->width, frame->height, 1)) < 0)
|
|
return ret;
|
|
|
|
if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
|
|
frame->format == AV_PIX_FMT_YUYV422) {
|
|
int x;
|
|
for(x = 1; x < frame->height*frame->width*2; x += 2)
|
|
pkt->data[x] ^= 0x80;
|
|
} else if (avctx->codec_tag == AV_RL32("b64a") && ret > 0 &&
|
|
frame->format == AV_PIX_FMT_RGBA64BE) {
|
|
uint64_t v;
|
|
int x;
|
|
for (x = 0; x < frame->height * frame->width; x++) {
|
|
v = AV_RB64(&pkt->data[8 * x]);
|
|
AV_WB64(&pkt->data[8 * x], v << 48 | v >> 16);
|
|
}
|
|
}
|
|
*got_packet = 1;
|
|
return 0;
|
|
}
|
|
|
|
const FFCodec ff_rawvideo_encoder = {
|
|
.p.name = "rawvideo",
|
|
CODEC_LONG_NAME("raw video"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_RAWVIDEO,
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
|
|
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
|
|
.init = raw_encode_init,
|
|
FF_CODEC_ENCODE_CB(raw_encode),
|
|
};
|