mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
21b23ceab3
and remove FF_CODEC_CAP_INIT_THREADSAFE All our native codecs are already init-threadsafe (only wrappers for external libraries and hwaccels are typically not marked as init-threadsafe yet), so it is only natural for this to also be the default state. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/*
|
|
* AVRn decoder
|
|
* Copyright (c) 2012 Michael Niedermayer
|
|
*
|
|
* 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 "codec_internal.h"
|
|
#include "internal.h"
|
|
#include "libavutil/imgutils.h"
|
|
|
|
typedef struct {
|
|
int interlace;
|
|
int tff;
|
|
} AVRnContext;
|
|
|
|
static av_cold int init(AVCodecContext *avctx)
|
|
{
|
|
AVRnContext *a = avctx->priv_data;
|
|
int ret;
|
|
|
|
if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
|
|
return ret;
|
|
|
|
avctx->pix_fmt = AV_PIX_FMT_UYVY422;
|
|
|
|
if(avctx->extradata_size >= 9 && avctx->extradata[4]+28 < avctx->extradata_size) {
|
|
int ndx = avctx->extradata[4] + 4;
|
|
a->interlace = !memcmp(avctx->extradata + ndx, "1:1(", 4);
|
|
if(a->interlace) {
|
|
a->tff = avctx->extradata[ndx + 24] == 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx, AVFrame *p,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
AVRnContext *a = avctx->priv_data;
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
int y, ret, true_height;
|
|
|
|
true_height = buf_size / (2*avctx->width);
|
|
|
|
if(buf_size < 2*avctx->width * avctx->height) {
|
|
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
|
|
return ret;
|
|
p->pict_type= AV_PICTURE_TYPE_I;
|
|
p->key_frame= 1;
|
|
|
|
if(a->interlace) {
|
|
buf += (true_height - avctx->height)*avctx->width;
|
|
for(y = 0; y < avctx->height-1; y+=2) {
|
|
memcpy(p->data[0] + (y+ a->tff)*p->linesize[0], buf , 2*avctx->width);
|
|
memcpy(p->data[0] + (y+!a->tff)*p->linesize[0], buf + avctx->width*true_height+4, 2*avctx->width);
|
|
buf += 2*avctx->width;
|
|
}
|
|
} else {
|
|
buf += (true_height - avctx->height)*avctx->width*2;
|
|
for(y = 0; y < avctx->height; y++) {
|
|
memcpy(p->data[0] + y*p->linesize[0], buf, 2*avctx->width);
|
|
buf += 2*avctx->width;
|
|
}
|
|
}
|
|
|
|
*got_frame = 1;
|
|
return buf_size;
|
|
}
|
|
|
|
const FFCodec ff_avrn_decoder = {
|
|
.p.name = "avrn",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Avid AVI Codec"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_AVRN,
|
|
.priv_data_size = sizeof(AVRnContext),
|
|
.init = init,
|
|
FF_CODEC_DECODE_CB(decode_frame),
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
|
|
};
|