#include <stdlib.h>
#include "avcodec.h"
+#include "internal.h"
+#include "libavutil/common.h"
#if CONFIG_ZLIB
#include <zlib.h>
#endif
#include "libavutil/lzo.h"
-typedef struct {
- AVFrame pic;
+typedef struct CamStudioContext {
int linelen, height, bpp;
unsigned int decomp_size;
unsigned char* decomp_buf;
}
#endif
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_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;
CamStudioContext *c = avctx->priv_data;
AVFrame *picture = data;
+ int ret;
if (buf_size < 2) {
av_log(avctx, AV_LOG_ERROR, "coded frame too small\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if (c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
- c->pic.reference = 1;
- c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_READABLE |
- FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
- if (avctx->get_buffer(avctx, &c->pic) < 0) {
+ if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
// decompress data
break;
#else
av_log(avctx, AV_LOG_ERROR, "compiled without zlib support\n");
- return -1;
+ return AVERROR(ENOSYS);
#endif
}
default:
av_log(avctx, AV_LOG_ERROR, "unknown compression\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
// flip upside down, add difference frame
if (buf[0] & 1) { // keyframe
- c->pic.pict_type = AV_PICTURE_TYPE_I;
- c->pic.key_frame = 1;
+ picture->pict_type = AV_PICTURE_TYPE_I;
+ picture->key_frame = 1;
switch (c->bpp) {
case 16:
- copy_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
+ copy_frame_16(picture, c->decomp_buf, c->linelen, c->height);
break;
case 32:
- copy_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
+ copy_frame_32(picture, c->decomp_buf, c->linelen, c->height);
break;
default:
- copy_frame_default(&c->pic, c->decomp_buf, FFALIGN(c->linelen, 4),
+ copy_frame_default(picture, c->decomp_buf, FFALIGN(c->linelen, 4),
c->linelen, c->height);
}
} else {
- c->pic.pict_type = AV_PICTURE_TYPE_P;
- c->pic.key_frame = 0;
+ picture->pict_type = AV_PICTURE_TYPE_P;
+ picture->key_frame = 0;
switch (c->bpp) {
case 16:
- add_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
+ add_frame_16(picture, c->decomp_buf, c->linelen, c->height);
break;
case 32:
- add_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
+ add_frame_32(picture, c->decomp_buf, c->linelen, c->height);
break;
default:
- add_frame_default(&c->pic, c->decomp_buf, FFALIGN(c->linelen, 4),
+ add_frame_default(picture, c->decomp_buf, FFALIGN(c->linelen, 4),
c->linelen, c->height);
}
}
- *picture = c->pic;
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
return buf_size;
}
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;
stride = c->linelen;
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;
}
static av_cold int decode_end(AVCodecContext *avctx) {
CamStudioContext *c = avctx->priv_data;
av_freep(&c->decomp_buf);
- if (c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
return 0;
}
AVCodec ff_cscd_decoder = {
.name = "camstudio",
+ .long_name = NULL_IF_CONFIG_SMALL("CamStudio"),
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_CSCD,
+ .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"),
+ .capabilities = AV_CODEC_CAP_DR1,
};
-