* Electronic Arts TGV Video Decoder
* Copyright (c) 2007-2008 Peter Ross
*
- * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file eatgv.c
+ * @file
* Electronic Arts TGV Video Decoder
- * by Peter Ross (suxen_drol at hotmail dot com)
+ * by Peter Ross (pross@xvid.org)
*
* Technical details here:
* http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TGV
*/
#include "avcodec.h"
-#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#define BITSTREAM_READER_LE
+#include "get_bits.h"
#include "libavutil/lzo.h"
+#include "libavutil/imgutils.h"
#define EA_PREAMBLE_SIZE 8
#define kVGT_TAG MKTAG('k', 'V', 'G', 'T')
*/
static int unpack(const uint8_t *src, const uint8_t *src_end, unsigned char *dst, int width, int height) {
unsigned char *dst_end = dst + width*height;
- int size,size1,size2,offset,run;
+ int size, size1, size2, offset, run;
unsigned char *dst_start = dst;
if (src[0] & 0x01)
vector_bits = AV_RL16(&buf[6]);
buf += 12;
- /* allocate codebook buffers as neccessary */
+ /* allocate codebook buffers as necessary */
if (num_mvs > s->num_mvs) {
s->mv_codebook = av_realloc(s->mv_codebook, num_mvs*2*sizeof(int));
s->num_mvs = num_mvs;
s->block_codebook[i][15-j] = tmp[get_bits(&gb, 2)];
}
+ if (get_bits_left(&gb) < vector_bits *
+ (s->avctx->height/4) * (s->avctx->width/4))
+ return -1;
+
/* read vectors and build frame */
for(y=0; y<s->avctx->height/4; y++)
for(x=0; x<s->avctx->width/4; x++) {
static int tgv_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
TgvContext *s = avctx->priv_data;
const uint8_t *buf_end = buf + buf_size;
int chunk_type;
}
}
- if (avcodec_check_dimensions(avctx, s->width, s->height))
+ if (av_image_check_size(s->width, s->height, 0, avctx))
return -1;
/* shuffle */
s->frame.buffer_hints = FF_BUFFER_HINTS_VALID;
s->frame.linesize[0] = s->width;
- /* allocate additional 12 bytes to accomodate av_memcpy_backptr() OUTBUF_PADDED optimisation */
+ /* allocate additional 12 bytes to accommodate av_memcpy_backptr() OUTBUF_PADDED optimisation */
s->frame.data[0] = av_malloc(s->width*s->height + 12);
if (!s->frame.data[0])
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
s->frame.data[1] = av_malloc(AVPALETTE_SIZE);
if (!s->frame.data[1]) {
av_freep(&s->frame.data[0]);
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
}
}
memcpy(s->frame.data[1], s->palette, AVPALETTE_SIZE);
if(chunk_type==kVGT_TAG) {
s->frame.key_frame = 1;
- s->frame.pict_type = FF_I_TYPE;
+ s->frame.pict_type = AV_PICTURE_TYPE_I;
if (unpack(buf, buf_end, s->frame.data[0], s->avctx->width, s->avctx->height)<0) {
av_log(avctx, AV_LOG_WARNING, "truncated intra frame\n");
return -1;
return buf_size;
}
s->frame.key_frame = 0;
- s->frame.pict_type = FF_P_TYPE;
+ s->frame.pict_type = AV_PICTURE_TYPE_P;
if (tgv_decode_inter(s, buf, buf_end)<0) {
av_log(avctx, AV_LOG_WARNING, "truncated inter frame\n");
return -1;
return 0;
}
-AVCodec eatgv_decoder = {
- "eatgv",
- CODEC_TYPE_VIDEO,
- CODEC_ID_TGV,
- sizeof(TgvContext),
- tgv_decode_init,
- NULL,
- tgv_decode_end,
- tgv_decode_frame,
- .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TGV Video"),
+AVCodec ff_eatgv_decoder = {
+ .name = "eatgv",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_TGV,
+ .priv_data_size = sizeof(TgvContext),
+ .init = tgv_decode_init,
+ .close = tgv_decode_end,
+ .decode = tgv_decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TGV video"),
};