mirror of
https://github.com/xenia-project/FFmpeg.git
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205b8fd078
Allows to get a more realistic total bitrate (and estimated file size) in avi_write_header. Previously a static default value of 200k was assumed. Adds an internal helper function for bitrate guessing. Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com> Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
96 lines
3.1 KiB
C
96 lines
3.1 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 "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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#if FF_API_CODED_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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_alloc_packet2(avctx, pkt, ret, ret)) < 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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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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.init = raw_encode_init,
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.encode2 = raw_encode,
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};
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