#include "avcodec.h"
#include "bytestream.h"
+#include "internal.h"
#include "libavutil/imgutils.h"
-#include "libavutil/lzo.h" // for av_memcpy_backptr
+#include "libavutil/mem.h"
typedef struct DfaContext {
- AVFrame pic;
-
uint32_t pal[256];
uint8_t *frame_buf;
} DfaContext;
if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
return ret;
- s->frame_buf = av_mallocz(avctx->width * avctx->height + AV_LZO_OUTPUT_PADDING);
+ s->frame_buf = av_mallocz(avctx->width * avctx->height);
if (!s->frame_buf)
return AVERROR(ENOMEM);
count = ((v >> 13) + 2) << 1;
if (frame - frame_start < offset || frame_end - frame < count)
return AVERROR_INVALIDDATA;
- // can't use av_memcpy_backptr() since it can overwrite following pixels
- for (v = 0; v < count; v++)
- frame[v] = frame[v - offset];
+ av_memcpy_backptr(frame, offset, count);
frame += count;
} else if (bitbuf & (mask << 1)) {
frame += bytestream2_get_le16(gb);
};
static int dfa_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
+ void *data, int *got_frame,
AVPacket *avpkt)
{
+ AVFrame *frame = data;
DfaContext *s = avctx->priv_data;
GetByteContext gb;
const uint8_t *buf = avpkt->data;
int ret;
int i, pal_elems;
- if (s->pic.data[0])
- avctx->release_buffer(avctx, &s->pic);
-
- if ((ret = avctx->get_buffer(avctx, &s->pic))) {
+ if ((ret = ff_get_buffer(avctx, frame, 0))) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
s->pal[i] = bytestream2_get_be24(&gb) << 2;
s->pal[i] |= (s->pal[i] >> 6) & 0x333;
}
- s->pic.palette_has_changed = 1;
+ frame->palette_has_changed = 1;
} else if (chunk_type <= 9) {
if (decoder[chunk_type - 2](&gb, s->frame_buf, avctx->width, avctx->height)) {
av_log(avctx, AV_LOG_ERROR, "Error decoding %s chunk\n",
}
buf = s->frame_buf;
- dst = s->pic.data[0];
+ dst = frame->data[0];
for (i = 0; i < avctx->height; i++) {
memcpy(dst, buf, avctx->width);
- dst += s->pic.linesize[0];
+ dst += frame->linesize[0];
buf += avctx->width;
}
- memcpy(s->pic.data[1], s->pal, sizeof(s->pal));
+ memcpy(frame->data[1], s->pal, sizeof(s->pal));
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->pic;
+ *got_frame = 1;
return avpkt->size;
}
{
DfaContext *s = avctx->priv_data;
- if (s->pic.data[0])
- avctx->release_buffer(avctx, &s->pic);
-
av_freep(&s->frame_buf);
return 0;