2005-04-03 05:02:08 +00:00
|
|
|
/*
|
2008-04-26 04:14:33 +00:00
|
|
|
* Autodesk RLE Decoder
|
2016-04-27 17:45:23 +00:00
|
|
|
* Copyright (C) 2005 The FFmpeg project
|
2005-04-03 05:02:08 +00:00
|
|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* This file is part of Libav.
|
2006-10-07 15:30:46 +00:00
|
|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* Libav is free software; you can redistribute it and/or
|
2005-04-03 05:02:08 +00:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 15:30:46 +00:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2005-04-03 05:02:08 +00:00
|
|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* Libav is distributed in the hope that it will be useful,
|
2005-04-03 05:02:08 +00:00
|
|
|
* 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
|
2011-03-18 17:35:10 +00:00
|
|
|
* License along with Libav; if not, write to the Free Software
|
2006-01-12 22:43:26 +00:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2005-04-03 05:02:08 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
2010-04-20 14:45:34 +00:00
|
|
|
* @file
|
2008-04-26 04:14:33 +00:00
|
|
|
* Autodesk RLE Video Decoder by Konstantin Shishkov
|
2005-04-03 05:02:08 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
|
|
|
|
#include "avcodec.h"
|
2012-11-21 20:34:46 +00:00
|
|
|
#include "internal.h"
|
2008-09-18 05:20:54 +00:00
|
|
|
#include "msrledec.h"
|
2005-04-03 05:02:08 +00:00
|
|
|
|
|
|
|
typedef struct AascContext {
|
|
|
|
AVCodecContext *avctx;
|
2012-03-31 17:10:54 +00:00
|
|
|
GetByteContext gb;
|
2012-11-21 20:34:46 +00:00
|
|
|
AVFrame *frame;
|
2005-04-03 05:02:08 +00:00
|
|
|
} AascContext;
|
|
|
|
|
2008-03-21 03:11:20 +00:00
|
|
|
static av_cold int aasc_decode_init(AVCodecContext *avctx)
|
2005-04-03 05:02:08 +00:00
|
|
|
{
|
2007-04-08 20:24:16 +00:00
|
|
|
AascContext *s = avctx->priv_data;
|
2005-04-03 05:02:08 +00:00
|
|
|
|
|
|
|
s->avctx = avctx;
|
|
|
|
|
2012-10-06 10:10:34 +00:00
|
|
|
avctx->pix_fmt = AV_PIX_FMT_BGR24;
|
2005-04-03 05:02:08 +00:00
|
|
|
|
2012-11-21 20:34:46 +00:00
|
|
|
s->frame = av_frame_alloc();
|
|
|
|
if (!s->frame)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
2005-04-03 05:02:08 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int aasc_decode_frame(AVCodecContext *avctx,
|
2012-11-13 18:35:22 +00:00
|
|
|
void *data, int *got_frame,
|
2009-04-07 15:59:50 +00:00
|
|
|
AVPacket *avpkt)
|
2005-04-03 05:02:08 +00:00
|
|
|
{
|
2009-04-07 15:59:50 +00:00
|
|
|
const uint8_t *buf = avpkt->data;
|
2012-11-14 08:09:43 +00:00
|
|
|
int buf_size = avpkt->size;
|
|
|
|
AascContext *s = avctx->priv_data;
|
2012-11-14 08:11:07 +00:00
|
|
|
int compr, i, stride, ret;
|
2005-04-03 05:02:08 +00:00
|
|
|
|
2013-07-07 10:31:19 +00:00
|
|
|
if (buf_size < 4)
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
|
2012-11-21 20:34:46 +00:00
|
|
|
if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) {
|
2005-04-03 05:02:08 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
|
2012-11-14 08:11:07 +00:00
|
|
|
return ret;
|
2005-04-03 05:02:08 +00:00
|
|
|
}
|
|
|
|
|
2012-11-14 08:09:43 +00:00
|
|
|
compr = AV_RL32(buf);
|
|
|
|
buf += 4;
|
2008-12-06 08:57:31 +00:00
|
|
|
buf_size -= 4;
|
2012-11-14 08:09:43 +00:00
|
|
|
switch (compr) {
|
2008-12-06 08:57:31 +00:00
|
|
|
case 0:
|
|
|
|
stride = (avctx->width * 3 + 3) & ~3;
|
2013-07-07 10:31:19 +00:00
|
|
|
if (buf_size < stride * avctx->height)
|
|
|
|
return AVERROR_INVALIDDATA;
|
2012-11-14 08:09:43 +00:00
|
|
|
for (i = avctx->height - 1; i >= 0; i--) {
|
2012-11-21 20:34:46 +00:00
|
|
|
memcpy(s->frame->data[0] + i * s->frame->linesize[0], buf, avctx->width * 3);
|
2008-12-06 08:57:31 +00:00
|
|
|
buf += stride;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 1:
|
2013-01-29 11:42:54 +00:00
|
|
|
bytestream2_init(&s->gb, buf, buf_size);
|
2015-10-14 09:33:18 +00:00
|
|
|
ff_msrle_decode(avctx, s->frame, 8, &s->gb);
|
2008-12-06 08:57:31 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Unknown compression type %d\n", compr);
|
2012-11-14 08:11:07 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2008-12-06 08:57:31 +00:00
|
|
|
}
|
2005-04-03 05:02:08 +00:00
|
|
|
|
2012-11-13 18:35:22 +00:00
|
|
|
*got_frame = 1;
|
2012-11-21 20:34:46 +00:00
|
|
|
if ((ret = av_frame_ref(data, s->frame)) < 0)
|
|
|
|
return ret;
|
2005-04-03 05:02:08 +00:00
|
|
|
|
|
|
|
/* report that the buffer was completely consumed */
|
2015-04-16 17:12:02 +00:00
|
|
|
return avpkt->size;
|
2005-04-03 05:02:08 +00:00
|
|
|
}
|
|
|
|
|
2008-03-21 03:11:20 +00:00
|
|
|
static av_cold int aasc_decode_end(AVCodecContext *avctx)
|
2005-04-03 05:02:08 +00:00
|
|
|
{
|
2007-04-08 20:24:16 +00:00
|
|
|
AascContext *s = avctx->priv_data;
|
2005-04-03 05:02:08 +00:00
|
|
|
|
2012-11-21 20:34:46 +00:00
|
|
|
av_frame_free(&s->frame);
|
2005-04-03 05:02:08 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-25 21:40:11 +00:00
|
|
|
AVCodec ff_aasc_decoder = {
|
2011-07-17 10:54:31 +00:00
|
|
|
.name = "aasc",
|
2013-10-03 20:57:53 +00:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Autodesk RLE"),
|
2011-07-17 10:54:31 +00:00
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 09:11:04 +00:00
|
|
|
.id = AV_CODEC_ID_AASC,
|
2011-07-17 10:54:31 +00:00
|
|
|
.priv_data_size = sizeof(AascContext),
|
|
|
|
.init = aasc_decode_init,
|
|
|
|
.close = aasc_decode_end,
|
|
|
|
.decode = aasc_decode_frame,
|
2015-07-07 00:41:27 +00:00
|
|
|
.capabilities = AV_CODEC_CAP_DR1,
|
2017-02-08 14:42:16 +00:00
|
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
|
2005-04-03 05:02:08 +00:00
|
|
|
};
|