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Merge "Better allocate yuv buffers."

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This commit is contained in:
Fritz Koenig 2011-07-13 14:18:11 -07:00 committed by Code Review
commit 4ab3175b12
1 changed files with 19 additions and 17 deletions
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36
vpx_scale/generic/yv12config.c
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@ -24,9 +24,12 @@ vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf)
{
if (ybf)
{
duck_free(ybf->buffer_alloc);
vpx_free(ybf->buffer_alloc);
ybf->buffer_alloc = 0;
/* buffer_alloc isn't accessed by most functions. Rather y_buffer,
u_buffer and v_buffer point to buffer_alloc and are used. Clear out
all of this so that a freed pointer isn't inadvertently used */
vpx_memset (ybf, 0, sizeof (YV12_BUFFER_CONFIG));
}
else
{
@ -44,38 +47,37 @@ vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height, int
{
/*NOTE:*/
int yplane_size = (height + 2 * border) * (width + 2 * border);
int uvplane_size = ((1 + height) / 2 + border) * ((1 + width) / 2 + border);
if (ybf)
{
int uv_width = width >> 1;
int uv_height = height >> 1;
int yplane_size = (height + 2 * border) * (width + 2 * border);
int uvplane_size = (uv_height + border) * (uv_width + border);
vp8_yv12_de_alloc_frame_buffer(ybf);
/* only support allocating buffers that have
a height and width that are multiples of 16 */
if ((width & 0xf) | (height & 0xf))
return -3;
ybf->y_width = width;
ybf->y_height = height;
ybf->y_stride = width + 2 * border;
ybf->uv_width = (1 + width) / 2;
ybf->uv_height = (1 + height) / 2;
ybf->uv_stride = ybf->uv_width + border;
ybf->uv_width = uv_width;
ybf->uv_height = uv_height;
ybf->uv_stride = uv_width + border;
ybf->border = border;
ybf->frame_size = yplane_size + 2 * uvplane_size;
/* Added 2 extra lines to framebuffer so that copy12x12 doesn't fail
* when we have a large motion vector in V on the last v block.
* Note : We never use these pixels anyway so this doesn't hurt.
*/
ybf->buffer_alloc = (unsigned char *) duck_memalign(32, ybf->frame_size + (ybf->y_stride * 2) + 32, 0);
ybf->buffer_alloc = (unsigned char *) vpx_memalign(32, ybf->frame_size);
if (ybf->buffer_alloc == NULL)
return -1;
ybf->y_buffer = ybf->buffer_alloc + (border * ybf->y_stride) + border;
if (yplane_size & 0xf)
yplane_size += 16 - (yplane_size & 0xf);
ybf->u_buffer = ybf->buffer_alloc + yplane_size + (border / 2 * ybf->uv_stride) + border / 2;
ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size + (border / 2 * ybf->uv_stride) + border / 2;