* Feeble Files/ScummVM DXA decoder
* Copyright (c) 2007 Konstantin Shishkov
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/dxa.c
+ * @file
* DXA Video decoder
*/
#include <stdio.h>
#include <stdlib.h>
+#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
+#include "internal.h"
#include <zlib.h>
* Decoder context
*/
typedef struct DxaDecContext {
- AVCodecContext *avctx;
AVFrame pic, prev;
int dsize;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown opcode %d\n", type);
- return -1;
+ return AVERROR_INVALIDDATA;
}
}
dst += stride * 4;
return 0;
}
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size)
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
DxaDecContext * const c = avctx->priv_data;
uint8_t *outptr, *srcptr, *tmpptr;
unsigned long dsize;
- int i, j, compr;
+ int i, j, compr, ret;
int stride;
int orig_buf_size = buf_size;
int pc = 0;
buf_size -= 768+4;
}
- if(avctx->get_buffer(avctx, &c->pic) < 0){
+ if ((ret = ff_get_buffer(avctx, &c->pic)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
memcpy(c->pic.data[1], c->pal, AVPALETTE_SIZE);
c->pic.palette_has_changed = pc;
dsize = c->dsize;
if((compr != 4 && compr != -1) && uncompress(c->decomp_buf, &dsize, buf + 9, buf_size - 9) != Z_OK){
av_log(avctx, AV_LOG_ERROR, "Uncompress failed!\n");
- return -1;
+ return AVERROR_UNKNOWN;
}
switch(compr){
case -1:
c->pic.key_frame = 0;
- c->pic.pict_type = FF_P_TYPE;
+ c->pic.pict_type = AV_PICTURE_TYPE_P;
if(c->prev.data[0])
memcpy(c->pic.data[0], c->prev.data[0], c->pic.linesize[0] * avctx->height);
else{ // Should happen only when first frame is 'NULL'
memset(c->pic.data[0], 0, c->pic.linesize[0] * avctx->height);
c->pic.key_frame = 1;
- c->pic.pict_type = FF_I_TYPE;
+ c->pic.pict_type = AV_PICTURE_TYPE_I;
}
break;
case 2:
case 4:
case 5:
c->pic.key_frame = !(compr & 1);
- c->pic.pict_type = (compr & 1) ? FF_P_TYPE : FF_I_TYPE;
+ c->pic.pict_type = (compr & 1) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
for(j = 0; j < avctx->height; j++){
if(compr & 1){
for(i = 0; i < avctx->width; i++)
case 12: // ScummVM coding
case 13:
c->pic.key_frame = 0;
- c->pic.pict_type = FF_P_TYPE;
+ c->pic.pict_type = AV_PICTURE_TYPE_P;
decode_13(avctx, c, c->pic.data[0], srcptr, c->prev.data[0]);
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown/unsupported compression type %d\n", buf[4]);
- return -1;
+ return AVERROR_INVALIDDATA;
}
FFSWAP(AVFrame, c->pic, c->prev);
if(c->pic.data[0])
avctx->release_buffer(avctx, &c->pic);
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
*(AVFrame*)data = c->prev;
/* always report that the buffer was completely consumed */
{
DxaDecContext * const c = avctx->priv_data;
- c->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_PAL8;
-
- if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
- return -1;
- }
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
c->dsize = avctx->width * avctx->height * 2;
if((c->decomp_buf = av_malloc(c->dsize)) == NULL) {
av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
- return -1;
+ return AVERROR(ENOMEM);
}
return 0;
return 0;
}
-AVCodec dxa_decoder = {
- "dxa",
- CODEC_TYPE_VIDEO,
- CODEC_ID_DXA,
- sizeof(DxaDecContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- .long_name = NULL_IF_CONFIG_SMALL("Feeble Files/ScummVM DXA"),
+AVCodec ff_dxa_decoder = {
+ .name = "dxa",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_DXA,
+ .priv_data_size = sizeof(DxaDecContext),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Feeble Files/ScummVM DXA"),
};
-
projects / ffmpeg / blobdiff