int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height,
int ss_x, int ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
int use_highbitdepth,
#endif
int border,
int byte_alignment,
vpx_codec_frame_buffer_t *fb,
vpx_get_frame_buffer_cb_fn_t cb,
void *cb_priv) {
if (ybf) {
const int vp9_byte_align = (byte_alignment == 0) ? 1 : byte_alignment;
const int aligned_width = (width + 7) & ~7;
const int aligned_height = (height + 7) & ~7;
const int y_stride = ((aligned_width + 2 * border) + 31) & ~31;
const uint64_t yplane_size = (aligned_height + 2 * border) *
(uint64_t)y_stride + byte_alignment;
const int uv_width = aligned_width >> ss_x;
const int uv_height = aligned_height >> ss_y;
const int uv_stride = y_stride >> ss_x;
const int uv_border_w = border >> ss_x;
const int uv_border_h = border >> ss_y;
const uint64_t uvplane_size = (uv_height + 2 * uv_border_h) *
(uint64_t)uv_stride + byte_alignment;
#if CONFIG_ALPHA
const int alpha_width = aligned_width;
const int alpha_height = aligned_height;
const int alpha_stride = y_stride;
const int alpha_border_w = border;
const int alpha_border_h = border;
const uint64_t alpha_plane_size = (alpha_height + 2 * alpha_border_h) *
(uint64_t)alpha_stride + byte_alignment;
#if CONFIG_VP9_HIGHBITDEPTH
const uint64_t frame_size = (1 + use_highbitdepth) *
(yplane_size + 2 * uvplane_size + alpha_plane_size);
#else
const uint64_t frame_size = yplane_size + 2 * uvplane_size +
alpha_plane_size;
#endif // CONFIG_VP9_HIGHBITDEPTH
#else
#if CONFIG_VP9_HIGHBITDEPTH
const uint64_t frame_size =
(1 + use_highbitdepth) * (yplane_size + 2 * uvplane_size);
#else
const uint64_t frame_size = yplane_size + 2 * uvplane_size;
#endif // CONFIG_VP9_HIGHBITDEPTH
#endif // CONFIG_ALPHA
uint8_t *buf = NULL;
if (cb != NULL) {
const int align_addr_extra_size = 31;
const uint64_t external_frame_size = frame_size + align_addr_extra_size;
assert(fb != NULL);
if (external_frame_size != (size_t)external_frame_size)
return -1;
// Allocation to hold larger frame, or first allocation.
if (cb(cb_priv, (size_t)external_frame_size, fb) < 0)
return -1;
if (fb->data == NULL || fb->size < external_frame_size)
return -1;
ybf->buffer_alloc = (uint8_t *)yv12_align_addr(fb->data, 32);
} else if (frame_size > (size_t)ybf->buffer_alloc_sz) {
// Allocation to hold larger frame, or first allocation.
vpx_free(ybf->buffer_alloc);
ybf->buffer_alloc = NULL;
if (frame_size != (size_t)frame_size)
return -1;
ybf->buffer_alloc = (uint8_t *)vpx_memalign(32, (size_t)frame_size);
if (!ybf->buffer_alloc)
return -1;
ybf->buffer_alloc_sz = (int)frame_size;
// This memset is needed for fixing valgrind error from C loop filter
// due to access uninitialized memory in frame border. It could be
// removed if border is totally removed.
memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz);
}
/* Only support allocating buffers that have a border that's a multiple
* of 32. The border restriction is required to get 16-byte alignment of
* the start of the chroma rows without introducing an arbitrary gap
* between planes, which would break the semantics of things like
* vpx_img_set_rect(). */
if (border & 0x1f)
return -3;
ybf->y_crop_width = width;
ybf->y_crop_height = height;
ybf->y_width = aligned_width;
ybf->y_height = aligned_height;
ybf->y_stride = y_stride;
ybf->uv_crop_width = (width + ss_x) >> ss_x;
ybf->uv_crop_height = (height + ss_y) >> ss_y;
ybf->uv_width = uv_width;
ybf->uv_height = uv_height;
ybf->uv_stride = uv_stride;
ybf->border = border;
ybf->frame_size = (int)frame_size;
ybf->subsampling_x = ss_x;
ybf->subsampling_y = ss_y;
buf = ybf->buffer_alloc;
#if CONFIG_VP9_HIGHBITDEPTH
if (use_highbitdepth) {
// Store uint16 addresses when using 16bit framebuffers
buf = CONVERT_TO_BYTEPTR(ybf->buffer_alloc);
ybf->flags = YV12_FLAG_HIGHBITDEPTH;
} else {
ybf->flags = 0;
}
#endif // CONFIG_VP9_HIGHBITDEPTH
ybf->y_buffer = (uint8_t *)yv12_align_addr(
buf + (border * y_stride) + border, vp9_byte_align);
ybf->u_buffer = (uint8_t *)yv12_align_addr(
buf + yplane_size + (uv_border_h * uv_stride) + uv_border_w,
vp9_byte_align);
ybf->v_buffer = (uint8_t *)yv12_align_addr(
buf + yplane_size + uvplane_size + (uv_border_h * uv_stride) +
uv_border_w, vp9_byte_align);
#if CONFIG_ALPHA
ybf->alpha_width = alpha_width;
ybf->alpha_height = alpha_height;
ybf->alpha_stride = alpha_stride;
ybf->alpha_buffer = (uint8_t *)yv12_align_addr(
buf + yplane_size + 2 * uvplane_size +
(alpha_border_h * alpha_stride) + alpha_border_w, vp9_byte_align);
#endif
ybf->corrupted = 0; /* assume not corrupted by errors */
return 0;
}
return -2;
}
int vp9_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height,
int ss_x, int ss_y, int border,
vpx_codec_frame_buffer_t *fb,
vpx_get_frame_buffer_cb_fn_t cb,
void *cb_priv) {
if (ybf) {
const int aligned_width = (width + 7) & ~7;
const int aligned_height = (height + 7) & ~7;
const int y_stride = ((aligned_width + 2 * border) + 31) & ~31;
const int yplane_size = (aligned_height + 2 * border) * y_stride;
const int uv_width = aligned_width >> ss_x;
const int uv_height = aligned_height >> ss_y;
const int uv_stride = y_stride >> ss_x;
const int uv_border_w = border >> ss_x;
const int uv_border_h = border >> ss_y;
const int uvplane_size = (uv_height + 2 * uv_border_h) * uv_stride;
#if CONFIG_ALPHA
const int alpha_width = aligned_width;
const int alpha_height = aligned_height;
const int alpha_stride = y_stride;
const int alpha_border_w = border;
const int alpha_border_h = border;
const int alpha_plane_size = (alpha_height + 2 * alpha_border_h) *
alpha_stride;
const int frame_size = yplane_size + 2 * uvplane_size +
alpha_plane_size;
#else
const int frame_size = yplane_size + 2 * uvplane_size;
#endif
if (cb != NULL) {
const int align_addr_extra_size = 31;
const size_t external_frame_size = frame_size + align_addr_extra_size;
assert(fb != NULL);
// Allocation to hold larger frame, or first allocation.
if (cb(cb_priv, external_frame_size, fb) < 0)
return -1;
if (fb->data == NULL || fb->size < external_frame_size)
return -1;
// This memset is needed for fixing valgrind error from C loop filter
// due to access uninitialized memory in frame border. It could be
// removed if border is totally removed.
vpx_memset(fb->data, 0, fb->size);
ybf->buffer_alloc = (uint8_t *)yv12_align_addr(fb->data, 32);
} else if (frame_size > ybf->buffer_alloc_sz) {
// Allocation to hold larger frame, or first allocation.
if (ybf->buffer_alloc)
vpx_free(ybf->buffer_alloc);
ybf->buffer_alloc = (uint8_t *)vpx_memalign(32, frame_size);
if (!ybf->buffer_alloc)
return -1;
ybf->buffer_alloc_sz = frame_size;
// This memset is needed for fixing valgrind error from C loop filter
// due to access uninitialized memory in frame border. It could be
// removed if border is totally removed.
vpx_memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz);
}
/* Only support allocating buffers that have a border that's a multiple
* of 32. The border restriction is required to get 16-byte alignment of
* the start of the chroma rows without introducing an arbitrary gap
* between planes, which would break the semantics of things like
* vpx_img_set_rect(). */
if (border & 0x1f)
return -3;
ybf->y_crop_width = width;
ybf->y_crop_height = height;
ybf->y_width = aligned_width;
ybf->y_height = aligned_height;
ybf->y_stride = y_stride;
ybf->uv_crop_width = (width + ss_x) >> ss_x;
ybf->uv_crop_height = (height + ss_y) >> ss_y;
ybf->uv_width = uv_width;
ybf->uv_height = uv_height;
ybf->uv_stride = uv_stride;
ybf->border = border;
ybf->frame_size = frame_size;
ybf->y_buffer = ybf->buffer_alloc + (border * y_stride) + border;
ybf->u_buffer = ybf->buffer_alloc + yplane_size +
(uv_border_h * uv_stride) + uv_border_w;
ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size +
(uv_border_h * uv_stride) + uv_border_w;
#if CONFIG_ALPHA
ybf->alpha_width = alpha_width;
ybf->alpha_height = alpha_height;
ybf->alpha_stride = alpha_stride;
ybf->alpha_buffer = ybf->buffer_alloc + yplane_size + 2 * uvplane_size +
(alpha_border_h * alpha_stride) + alpha_border_w;
#endif
ybf->corrupted = 0; /* assume not corrupted by errors */
return 0;
}
return -2;
}
