typedef struct XanContext {
AVCodecContext *avctx;
- AVFrame pic;
+ AVFrame *pic;
uint8_t *y_buffer;
uint8_t *scratch_buffer;
GetByteContext gb;
} XanContext;
+static av_cold int xan_decode_end(AVCodecContext *avctx);
+
static av_cold int xan_decode_init(AVCodecContext *avctx)
{
XanContext *s = avctx->priv_data;
return AVERROR(ENOMEM);
s->scratch_buffer = av_malloc(s->buffer_size + 130);
if (!s->scratch_buffer) {
- av_freep(&s->y_buffer);
+ xan_decode_end(avctx);
+ return AVERROR(ENOMEM);
+ }
+
+ s->pic = av_frame_alloc();
+ if (!s->pic) {
+ xan_decode_end(avctx);
return AVERROR(ENOMEM);
}
return dec_size;
}
- U = s->pic.data[1];
- V = s->pic.data[2];
+ U = s->pic->data[1];
+ V = s->pic->data[2];
src = s->scratch_buffer;
src_end = src + dec_size;
if (mode) {
V[i] = vval | (vval >> 5);
}
}
- U += s->pic.linesize[1];
- V += s->pic.linesize[2];
+ U += s->pic->linesize[1];
+ V += s->pic->linesize[2];
}
if (avctx->height & 1) {
- memcpy(U, U - s->pic.linesize[1], avctx->width >> 1);
- memcpy(V, V - s->pic.linesize[2], avctx->width >> 1);
+ memcpy(U, U - s->pic->linesize[1], avctx->width >> 1);
+ memcpy(V, V - s->pic->linesize[2], avctx->width >> 1);
}
} else {
- uint8_t *U2 = U + s->pic.linesize[1];
- uint8_t *V2 = V + s->pic.linesize[2];
+ uint8_t *U2 = U + s->pic->linesize[1];
+ uint8_t *V2 = V + s->pic->linesize[2];
for (j = 0; j < avctx->height >> 2; j++) {
for (i = 0; i < avctx->width >> 1; i += 2) {
V[i] = V[i+1] = V2[i] = V2[i+1] = vval | (vval >> 5);
}
}
- U += s->pic.linesize[1] * 2;
- V += s->pic.linesize[2] * 2;
- U2 += s->pic.linesize[1] * 2;
- V2 += s->pic.linesize[2] * 2;
+ U += s->pic->linesize[1] * 2;
+ V += s->pic->linesize[2] * 2;
+ U2 += s->pic->linesize[1] * 2;
+ V2 += s->pic->linesize[2] * 2;
}
if (avctx->height & 3) {
int lines = ((avctx->height + 1) >> 1) - (avctx->height >> 2) * 2;
- memcpy(U, U - lines * s->pic.linesize[1], lines * s->pic.linesize[1]);
- memcpy(V, V - lines * s->pic.linesize[2], lines * s->pic.linesize[2]);
+ memcpy(U, U - lines * s->pic->linesize[1], lines * s->pic->linesize[1]);
+ memcpy(V, V - lines * s->pic->linesize[2], lines * s->pic->linesize[2]);
}
}
}
src = s->y_buffer;
- ybuf = s->pic.data[0];
+ ybuf = s->pic->data[0];
for (j = 0; j < avctx->height; j++) {
for (i = 0; i < avctx->width; i++)
ybuf[i] = (src[i] << 2) | (src[i] >> 3);
src += avctx->width;
- ybuf += s->pic.linesize[0];
+ ybuf += s->pic->linesize[0];
}
return 0;
}
src = s->y_buffer;
- ybuf = s->pic.data[0];
+ ybuf = s->pic->data[0];
for (j = 0; j < avctx->height; j++) {
for (i = 0; i < avctx->width; i++)
ybuf[i] = (src[i] << 2) | (src[i] >> 3);
src += avctx->width;
- ybuf += s->pic.linesize[0];
+ ybuf += s->pic->linesize[0];
}
return 0;
int ftype;
int ret;
- if ((ret = ff_reget_buffer(avctx, &s->pic)) < 0)
+ if ((ret = ff_reget_buffer(avctx, s->pic)) < 0)
return ret;
bytestream2_init(&s->gb, avpkt->data, avpkt->size);
if (ret)
return ret;
- if ((ret = av_frame_ref(data, &s->pic)) < 0)
+ if ((ret = av_frame_ref(data, s->pic)) < 0)
return ret;
*got_frame = 1;
{
XanContext *s = avctx->priv_data;
- av_frame_unref(&s->pic);
+ av_frame_free(&s->pic);
av_freep(&s->y_buffer);
av_freep(&s->scratch_buffer);