1
0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-07 11:13:41 +02:00
FFmpeg/libavcodec/avuienc.c

114 lines
3.5 KiB
C
Raw Normal View History

/*
* AVID Meridien encoder
*
* Copyright (c) 2012 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 "avcodec.h"
#include "internal.h"
static av_cold int avui_encode_init(AVCodecContext *avctx)
{
avctx->coded_frame = avcodec_alloc_frame();
if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) {
av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n");
return AVERROR(EINVAL);
}
if (!avctx->coded_frame) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
return AVERROR(ENOMEM);
}
if (!(avctx->extradata = av_mallocz(24 + FF_INPUT_BUFFER_PADDING_SIZE)))
return AVERROR(ENOMEM);
avctx->extradata_size = 24;
memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16);
if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
avctx->extradata[19] = 2;
} else {
avctx->extradata[19] = 1;
}
return 0;
}
static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet)
{
uint8_t *dst, *src = pic->data[0];
int i, j, skip, ret, size, interlaced;
interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE;
if (avctx->height == 486) {
skip = 10;
} else {
skip = 16;
}
size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0)
return ret;
dst = pkt->data;
if (!interlaced) {
dst += avctx->width * skip;
}
avctx->coded_frame->reference = 0;
avctx->coded_frame->key_frame = 1;
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
for (i = 0; i <= interlaced; i++) {
if (interlaced && avctx->height == 486) {
src = pic->data[0] + (1 - i) * pic->linesize[0];
} else {
src = pic->data[0] + i * pic->linesize[0];
}
dst += avctx->width * skip + 4 * i;
for (j = 0; j < avctx->height; j += interlaced + 1) {
memcpy(dst, src, avctx->width * 2);
src += (interlaced + 1) * pic->linesize[0];
dst += avctx->width * 2;
}
}
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
static av_cold int avui_encode_close(AVCodecContext *avctx)
{
av_freep(&avctx->coded_frame);
return 0;
}
AVCodec ff_avui_encoder = {
.name = "avui",
.type = AVMEDIA_TYPE_VIDEO,
Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85' * commit '36ef5369ee9b336febc2c270f8718cec4476cb85': Replace all CODEC_ID_* with AV_CODEC_ID_* lavc: add AV prefix to codec ids. Conflicts: doc/APIchanges doc/examples/decoding_encoding.c doc/examples/muxing.c ffmpeg.c ffprobe.c ffserver.c libavcodec/8svx.c libavcodec/avcodec.h libavcodec/dnxhd_parser.c libavcodec/dvdsubdec.c libavcodec/error_resilience.c libavcodec/h263dec.c libavcodec/libvorbisenc.c libavcodec/mjpeg_parser.c libavcodec/mjpegenc.c libavcodec/mpeg12.c libavcodec/mpeg4videodec.c libavcodec/mpegvideo.c libavcodec/mpegvideo_enc.c libavcodec/pcm.c libavcodec/r210dec.c libavcodec/utils.c libavcodec/v210dec.c libavcodec/version.h libavdevice/alsa-audio-dec.c libavdevice/bktr.c libavdevice/v4l2.c libavformat/asfdec.c libavformat/asfenc.c libavformat/avformat.h libavformat/avidec.c libavformat/caf.c libavformat/electronicarts.c libavformat/flacdec.c libavformat/flvdec.c libavformat/flvenc.c libavformat/framecrcenc.c libavformat/img2.c libavformat/img2dec.c libavformat/img2enc.c libavformat/ipmovie.c libavformat/isom.c libavformat/matroska.c libavformat/matroskadec.c libavformat/matroskaenc.c libavformat/mov.c libavformat/movenc.c libavformat/mp3dec.c libavformat/mpeg.c libavformat/mpegts.c libavformat/mxf.c libavformat/mxfdec.c libavformat/mxfenc.c libavformat/nsvdec.c libavformat/nut.c libavformat/oggenc.c libavformat/pmpdec.c libavformat/rawdec.c libavformat/rawenc.c libavformat/riff.c libavformat/sdp.c libavformat/utils.c libavformat/vocenc.c libavformat/wtv.c libavformat/xmv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-07 23:45:46 +03:00
.id = AV_CODEC_ID_AVUI,
.init = avui_encode_init,
.encode2 = avui_encode_frame,
.close = avui_encode_close,
.capabilities = CODEC_CAP_EXPERIMENTAL,
.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_UYVY422, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),
};