* CamStudio decoder
* Copyright (c) 2006 Reimar Doeffinger
*
- * 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
*/
#include <stdio.h>
#include <stdlib.h>
#include "avcodec.h"
+#include "libavutil/common.h"
#if CONFIG_ZLIB
#include <zlib.h>
unsigned char* decomp_buf;
} CamStudioContext;
-static void copy_frame_default(AVFrame *f, const uint8_t *src,
+static void copy_frame_default(AVFrame *f, const uint8_t *src, int src_stride,
int linelen, int height) {
int i;
uint8_t *dst = f->data[0];
dst += (height - 1) * f->linesize[0];
for (i = height; i; i--) {
memcpy(dst, src, linelen);
- src += linelen;
+ src += src_stride;
dst -= f->linesize[0];
}
}
-static void add_frame_default(AVFrame *f, const uint8_t *src,
+static void add_frame_default(AVFrame *f, const uint8_t *src, int src_stride,
int linelen, int height) {
int i, j;
uint8_t *dst = f->data[0];
for (i = height; i; i--) {
for (j = linelen; j; j--)
*dst++ += *src++;
+ src += src_stride - linelen;
dst -= f->linesize[0] + linelen;
}
}
#if !HAVE_BIGENDIAN
-#define copy_frame_16 copy_frame_default
-#define copy_frame_32 copy_frame_default
-#define add_frame_16 add_frame_default
-#define add_frame_32 add_frame_default
+#define copy_frame_16(f, s, l, h) copy_frame_default(f, s, l, l, h)
+#define copy_frame_32(f, s, l, h) copy_frame_default(f, s, l, l, h)
+#define add_frame_16(f, s, l, h) add_frame_default(f, s, l, l, h)
+#define add_frame_32(f, s, l, h) add_frame_default(f, s, l, l, h)
#else
static void copy_frame_16(AVFrame *f, const uint8_t *src,
int linelen, int height) {
// flip upside down, add difference frame
if (buf[0] & 1) { // keyframe
- c->pic.pict_type = FF_I_TYPE;
+ c->pic.pict_type = AV_PICTURE_TYPE_I;
c->pic.key_frame = 1;
switch (c->bpp) {
case 16:
copy_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
break;
default:
- copy_frame_default(&c->pic, c->decomp_buf, c->linelen, c->height);
+ copy_frame_default(&c->pic, c->decomp_buf, FFALIGN(c->linelen, 4),
+ c->linelen, c->height);
}
} else {
- c->pic.pict_type = FF_P_TYPE;
+ c->pic.pict_type = AV_PICTURE_TYPE_P;
c->pic.key_frame = 0;
switch (c->bpp) {
case 16:
add_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
break;
default:
- add_frame_default(&c->pic, c->decomp_buf, c->linelen, c->height);
+ add_frame_default(&c->pic, c->decomp_buf, FFALIGN(c->linelen, 4),
+ c->linelen, c->height);
}
}
static av_cold int decode_init(AVCodecContext *avctx) {
CamStudioContext *c = avctx->priv_data;
+ int stride;
switch (avctx->bits_per_coded_sample) {
- case 16: avctx->pix_fmt = PIX_FMT_RGB555; break;
- case 24: avctx->pix_fmt = PIX_FMT_BGR24; break;
- case 32: avctx->pix_fmt = PIX_FMT_RGB32; break;
+ case 16: avctx->pix_fmt = AV_PIX_FMT_RGB555; break;
+ case 24: avctx->pix_fmt = AV_PIX_FMT_BGR24; break;
+ case 32: avctx->pix_fmt = AV_PIX_FMT_RGB32; break;
default:
av_log(avctx, AV_LOG_ERROR,
"CamStudio codec error: invalid depth %i bpp\n",
avctx->bits_per_coded_sample);
- return 1;
+ return AVERROR_INVALIDDATA;
}
c->bpp = avctx->bits_per_coded_sample;
c->pic.data[0] = NULL;
c->linelen = avctx->width * avctx->bits_per_coded_sample / 8;
c->height = avctx->height;
- c->decomp_size = c->height * c->linelen;
+ stride = c->linelen;
+ if (avctx->bits_per_coded_sample == 24)
+ stride = FFALIGN(stride, 4);
+ c->decomp_size = c->height * stride;
c->decomp_buf = av_malloc(c->decomp_size + AV_LZO_OUTPUT_PADDING);
if (!c->decomp_buf) {
av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
- return 1;
+ return AVERROR(ENOMEM);
}
return 0;
}
return 0;
}
-AVCodec cscd_decoder = {
- "camstudio",
- CODEC_TYPE_VIDEO,
- CODEC_ID_CSCD,
- sizeof(CamStudioContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("CamStudio"),
+AVCodec ff_cscd_decoder = {
+ .name = "camstudio",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_CSCD,
+ .priv_data_size = sizeof(CamStudioContext),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("CamStudio"),
};
-
projects / ffmpeg / blobdiff