mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
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>
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/*
|
|
* v308 encoder
|
|
*
|
|
* Copyright (c) 2011 Carl Eugen Hoyos
|
|
*
|
|
* 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/intreadwrite.h"
|
|
#include "avcodec.h"
|
|
#include "internal.h"
|
|
|
|
static av_cold int v308_encode_init(AVCodecContext *avctx)
|
|
{
|
|
if (avctx->width & 1) {
|
|
av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
avctx->bits_per_coded_sample = 24;
|
|
avctx->bit_rate = ff_guess_coded_bitrate(avctx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int v308_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *pic, int *got_packet)
|
|
{
|
|
uint8_t *dst;
|
|
uint8_t *y, *u, *v;
|
|
int i, j, ret;
|
|
|
|
if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 3, 0)) < 0)
|
|
return ret;
|
|
dst = pkt->data;
|
|
|
|
y = pic->data[0];
|
|
u = pic->data[1];
|
|
v = pic->data[2];
|
|
|
|
for (i = 0; i < avctx->height; i++) {
|
|
for (j = 0; j < avctx->width; j++) {
|
|
*dst++ = v[j];
|
|
*dst++ = y[j];
|
|
*dst++ = u[j];
|
|
}
|
|
y += pic->linesize[0];
|
|
u += pic->linesize[1];
|
|
v += pic->linesize[2];
|
|
}
|
|
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
*got_packet = 1;
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int v308_encode_close(AVCodecContext *avctx)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_v308_encoder = {
|
|
.name = "v308",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_V308,
|
|
.init = v308_encode_init,
|
|
.encode2 = v308_encode_frame,
|
|
.close = v308_encode_close,
|
|
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
|
|
.capabilities = AV_CODEC_CAP_INTRA_ONLY,
|
|
};
|