mirror of
https://github.com/FFmpeg/FFmpeg.git
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c7a0addf93
Trivial for an encoder that knows the size of the output packet in advance. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/*
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* Raw Video Encoder
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* Copyright (c) 2001 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Raw Video Encoder
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*/
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#include "avcodec.h"
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#include "encode.h"
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#include "raw.h"
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#include "internal.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/internal.h"
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static av_cold int raw_encode_init(AVCodecContext *avctx)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
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avctx->bits_per_coded_sample = av_get_bits_per_pixel(desc);
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if(!avctx->codec_tag)
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avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
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avctx->bit_rate = ff_guess_coded_bitrate(avctx);
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return 0;
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}
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static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *frame, int *got_packet)
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{
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int ret = av_image_get_buffer_size(frame->format,
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frame->width, frame->height, 1);
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if (ret < 0)
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return ret;
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if ((ret = ff_get_encode_buffer(avctx, pkt, ret, 0)) < 0)
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return ret;
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if ((ret = av_image_copy_to_buffer(pkt->data, pkt->size,
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(const uint8_t **)frame->data, frame->linesize,
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frame->format,
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frame->width, frame->height, 1)) < 0)
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return ret;
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if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
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frame->format == AV_PIX_FMT_YUYV422) {
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int x;
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for(x = 1; x < frame->height*frame->width*2; x += 2)
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pkt->data[x] ^= 0x80;
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} else if (avctx->codec_tag == AV_RL32("b64a") && ret > 0 &&
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frame->format == AV_PIX_FMT_RGBA64BE) {
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uint64_t v;
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int x;
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for (x = 0; x < frame->height * frame->width; x++) {
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v = AV_RB64(&pkt->data[8 * x]);
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AV_WB64(&pkt->data[8 * x], v << 48 | v >> 16);
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}
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}
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pkt->flags |= AV_PKT_FLAG_KEY;
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*got_packet = 1;
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return 0;
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}
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const AVCodec ff_rawvideo_encoder = {
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.name = "rawvideo",
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.long_name = NULL_IF_CONFIG_SMALL("raw video"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_RAWVIDEO,
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.capabilities = AV_CODEC_CAP_DR1,
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.init = raw_encode_init,
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.encode2 = raw_encode,
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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