* Delphine Software International CIN Audio/Video Decoders
* Copyright (c) 2006 Gregory Montoir (cyx@users.sourceforge.net)
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* Delphine Software International CIN audio/video decoders
*/
-#include "libavutil/audioconvert.h"
+#include "libavutil/channel_layout.h"
#include "avcodec.h"
#include "bytestream.h"
+#include "internal.h"
#include "mathops.h"
0, 0, 0, 0, 0, 0, 0, 0
};
+static av_cold void destroy_buffers(CinVideoContext *cin)
+{
+ int i;
+
+ for (i = 0; i < 3; ++i)
+ av_freep(&cin->bitmap_table[i]);
+}
+
+static av_cold int allocate_buffers(CinVideoContext *cin)
+{
+ int i;
+
+ for (i = 0; i < 3; ++i) {
+ cin->bitmap_table[i] = av_mallocz(cin->bitmap_size);
+ if (!cin->bitmap_table[i]) {
+ av_log(cin->avctx, AV_LOG_ERROR, "Can't allocate bitmap buffers.\n");
+ destroy_buffers(cin);
+ return AVERROR(ENOMEM);
+ }
+ }
+
+ return 0;
+}
static av_cold int cinvideo_decode_init(AVCodecContext *avctx)
{
CinVideoContext *cin = avctx->priv_data;
- unsigned int i;
cin->avctx = avctx;
avctx->pix_fmt = AV_PIX_FMT_PAL8;
- cin->frame.data[0] = NULL;
+ avcodec_get_frame_defaults(&cin->frame);
cin->bitmap_size = avctx->width * avctx->height;
- for (i = 0; i < 3; ++i) {
- cin->bitmap_table[i] = av_mallocz(cin->bitmap_size);
- if (!cin->bitmap_table[i])
- av_log(avctx, AV_LOG_ERROR, "Can't allocate bitmap buffers.\n");
- }
+ if (allocate_buffers(cin))
+ return AVERROR(ENOMEM);
return 0;
}
return 0;
}
-static void cin_decode_rle(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
+static int cin_decode_rle(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
{
int len, code;
unsigned char *dst_end = dst + dst_size;
const unsigned char *src_end = src + src_size;
- while (src < src_end && dst < dst_end) {
+ while (src + 1 < src_end && dst < dst_end) {
code = *src++;
if (code & 0x80) {
len = code - 0x7F;
memset(dst, *src++, FFMIN(len, dst_end - dst));
} else {
len = code + 1;
+ if (len > src_end-src) {
+ av_log(NULL, AV_LOG_ERROR, "RLE overread\n");
+ return AVERROR_INVALIDDATA;
+ }
memcpy(dst, src, FFMIN(len, dst_end - dst));
src += len;
}
dst += len;
}
+ return 0;
}
static int cinvideo_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
+ void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
if (palette_colors_count > 256)
return AVERROR_INVALIDDATA;
for (i = 0; i < palette_colors_count; ++i) {
- cin->palette[i] = bytestream_get_le24(&buf);
+ cin->palette[i] = 0xFFU << 24 | bytestream_get_le24(&buf);
bitmap_frame_size -= 3;
}
} else {
for (i = 0; i < palette_colors_count; ++i) {
- cin->palette[buf[0]] = AV_RL24(buf+1);
+ cin->palette[buf[0]] = 0xFFU << 24 | AV_RL24(buf+1);
buf += 4;
bitmap_frame_size -= 4;
}
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
break;
case 35:
- cin_decode_huffman(buf, bitmap_frame_size,
+ bitmap_frame_size = cin_decode_huffman(buf, bitmap_frame_size,
cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
}
cin->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
- if (avctx->reget_buffer(avctx, &cin->frame)) {
- av_log(cin->avctx, AV_LOG_ERROR, "delphinecinvideo: reget_buffer() failed to allocate a frame\n");
- return -1;
+ if ((res = avctx->reget_buffer(avctx, &cin->frame))) {
+ av_log(cin->avctx, AV_LOG_ERROR, "failed to allocate a frame\n");
+ return res;
}
memcpy(cin->frame.data[1], cin->palette, sizeof(cin->palette));
FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_table[CIN_PRE_BMP]);
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
*(AVFrame *)data = cin->frame;
return buf_size;
static av_cold int cinvideo_decode_end(AVCodecContext *avctx)
{
CinVideoContext *cin = avctx->priv_data;
- int i;
if (cin->frame.data[0])
avctx->release_buffer(avctx, &cin->frame);
- for (i = 0; i < 3; ++i)
- av_free(cin->bitmap_table[i]);
+ destroy_buffers(cin);
return 0;
}
/* get output buffer */
cin->frame.nb_samples = avpkt->size - cin->initial_decode_frame;
- if ((ret = avctx->get_buffer(avctx, &cin->frame)) < 0) {
+ if ((ret = ff_get_buffer(avctx, &cin->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
projects / ffmpeg / blobdiff