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Revert "Extend the external fb interface to allocate individual planes."

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This reverts commit 6dd7f2b50a.

conversion warnings, crashes in 32-bit builds

Change-Id: I529ead34cd93c862dd07c9a29d8542dda2fc20ea
This commit is contained in:
James Zern 2016-05-19 23:33:07 -07:00
parent fa5d54f937
commit 84e3639454
3 changed files with 56 additions and 232 deletions
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161
test/external_frame_buffer_test.cc
View File

@ -23,16 +23,9 @@
namespace {
const int kCodedFrameBufferTypeParam = 1;
const int kVideoNameParam = 2;
const int kVideoNameParam = 1;
struct ExternalFrameBuffer {
// The first two fields are used when fb->type is equal to
// VPX_CODEC_FRAME_BUFFER_TYPE_PLANES
uint8_t *plane[VP9_MAXIMUM_EXTERNAL_PLANES];
int stride[VP9_MAXIMUM_EXTERNAL_PLANES];
// The following two fields are used when fb->type is equal to
// VPX_CODEC_FRAME_BUFFER_TYPE_SIZE
uint8_t *data;
size_t size;
int in_use;
@ -41,17 +34,12 @@ struct ExternalFrameBuffer {
// Class to manipulate a list of external frame buffers.
class ExternalFrameBufferList {
public:
explicit ExternalFrameBufferList(vpx_codec_frame_buffer_type_t type)
ExternalFrameBufferList()
: num_buffers_(0),
ext_fb_list_(NULL),
type_(type),
alignment_(32) {}
ext_fb_list_(NULL) {}
virtual ~ExternalFrameBufferList() {
for (int i = 0; i < num_buffers_; ++i) {
for (int plane = 0; plane < VP9_MAXIMUM_EXTERNAL_PLANES; ++plane) {
delete [] ext_fb_list_[i].plane[plane];
}
delete [] ext_fb_list_[i].data;
}
delete [] ext_fb_list_;
@ -75,44 +63,17 @@ class ExternalFrameBufferList {
// external frame buffer. Returns < 0 on an error.
int GetFreeFrameBuffer(size_t min_size, vpx_codec_frame_buffer_t *fb) {
EXPECT_TRUE(fb != NULL);
EXPECT_TRUE(fb->fmt == VPX_IMG_FMT_I420 || fb->fmt == VPX_IMG_FMT_I444 ||
fb->fmt == VPX_IMG_FMT_I422 || fb->fmt == VPX_IMG_FMT_I440)
<< " fmt is: " << fb->fmt;
const int idx = FindFreeBufferIndex();
if (idx == num_buffers_)
return -1;
if (type_ == VPX_CODEC_FRAME_BUFFER_TYPE_SIZE) {
if (ext_fb_list_[idx].size < min_size) {
delete [] ext_fb_list_[idx].data;
ext_fb_list_[idx].data = new uint8_t[min_size];
memset(ext_fb_list_[idx].data, 0, min_size);
ext_fb_list_[idx].size = min_size;
}
} else {
EXPECT_EQ(VPX_CODEC_FRAME_BUFFER_TYPE_PLANES, type_);
for (int plane = 0; plane < 3; ++plane) {
size_t plane_stride = fb->width;
size_t plane_height = fb->height;
if (plane > 0 && fb->fmt != VPX_IMG_FMT_I444) {
if (fb->fmt != VPX_IMG_FMT_I440)
plane_stride /= 2;
if (fb->fmt == VPX_IMG_FMT_I420 || fb->fmt == VPX_IMG_FMT_I440)
plane_height /= 2;
}
plane_stride += alignment_ - plane_stride % alignment_;
delete [] ext_fb_list_[idx].plane[plane];
ext_fb_list_[idx].plane[plane] =
new uint8_t[plane_height * plane_stride];
memset(ext_fb_list_[idx].plane[plane], 0, plane_height * plane_stride);
ext_fb_list_[idx].stride[plane] = plane_stride;
}
if (ext_fb_list_[idx].size < min_size) {
delete [] ext_fb_list_[idx].data;
ext_fb_list_[idx].data = new uint8_t[min_size];
memset(ext_fb_list_[idx].data, 0, min_size);
ext_fb_list_[idx].size = min_size;
}
fb->type = type_;
SetFrameBuffer(idx, fb);
return 0;
}
@ -125,27 +86,12 @@ class ExternalFrameBufferList {
if (idx == num_buffers_)
return -1;
if (type_ == VPX_CODEC_FRAME_BUFFER_TYPE_SIZE) {
if (ext_fb_list_[idx].size < min_size) {
delete [] ext_fb_list_[idx].data;
ext_fb_list_[idx].data = NULL;
ext_fb_list_[idx].size = min_size;
} else {
EXPECT_EQ(VPX_CODEC_FRAME_BUFFER_TYPE_PLANES, type_);
for (int plane = 0; plane < 3; ++plane) {
size_t plane_stride = fb->width;
if (plane > 0 && fb->fmt != VPX_IMG_FMT_I444) {
if (fb->fmt != VPX_IMG_FMT_I440)
plane_stride /= 2;
}
plane_stride += alignment_ - plane_stride % alignment_;
delete [] ext_fb_list_[idx].plane[plane];
ext_fb_list_[idx].plane[plane] = NULL;
ext_fb_list_[idx].stride[plane] = plane_stride;
}
}
fb->type = type_;
SetFrameBuffer(idx, fb);
return 0;
}
@ -174,22 +120,10 @@ class ExternalFrameBufferList {
if (img->fb_priv != NULL) {
const struct ExternalFrameBuffer *const ext_fb =
reinterpret_cast<ExternalFrameBuffer*>(img->fb_priv);
if (ext_fb->data != NULL) {
ASSERT_TRUE(img->planes[0] >= ext_fb->data &&
img->planes[0] < (ext_fb->data + ext_fb->size));
} else {
for (int plane = 0; plane < VP9_MAXIMUM_EXTERNAL_PLANES; ++plane) {
if (ext_fb->stride[plane]) {
EXPECT_EQ(img->planes[plane], ext_fb->plane[plane]);
EXPECT_EQ(img->stride[plane], ext_fb->stride[plane]);
}
}
}
}
}
void set_alignment(int alignment) {
alignment_ = alignment;
ASSERT_TRUE(img->planes[0] >= ext_fb->data &&
img->planes[0] < (ext_fb->data + ext_fb->size));
}
}
private:
@ -211,10 +145,6 @@ class ExternalFrameBufferList {
ASSERT_TRUE(fb != NULL);
fb->data = ext_fb_list_[idx].data;
fb->size = ext_fb_list_[idx].size;
for (int plane = 0; plane < VP9_MAXIMUM_EXTERNAL_PLANES; ++plane) {
fb->plane[plane] = ext_fb_list_[idx].plane[plane];
fb->stride[plane] = ext_fb_list_[idx].stride[plane];
}
ASSERT_EQ(0, ext_fb_list_[idx].in_use);
ext_fb_list_[idx].in_use = 1;
fb->priv = &ext_fb_list_[idx];
@ -222,8 +152,6 @@ class ExternalFrameBufferList {
int num_buffers_;
ExternalFrameBuffer *ext_fb_list_;
vpx_codec_frame_buffer_type_t type_;
int alignment_;
};
#if CONFIG_WEBM_IO
@ -275,14 +203,12 @@ int do_not_release_vp9_frame_buffer(void *user_priv,
// Class for testing passing in external frame buffers to libvpx.
class ExternalFrameBufferMD5Test
: public ::libvpx_test::DecoderTest,
public ::libvpx_test::CodecTestWith2Params<vpx_codec_frame_buffer_type_t,
const char*> {
public ::libvpx_test::CodecTestWithParam<const char*> {
protected:
ExternalFrameBufferMD5Test()
: DecoderTest(GET_PARAM(::libvpx_test::kCodecFactoryParam)),
md5_file_(NULL),
num_buffers_(0),
fb_list_(GET_PARAM(kCodedFrameBufferTypeParam)) {}
num_buffers_(0) {}
virtual ~ExternalFrameBufferMD5Test() {
if (md5_file_ != NULL)
@ -358,15 +284,12 @@ class ExternalFrameBufferMD5Test
const char kVP9TestFile[] = "vp90-2-02-size-lf-1920x1080.webm";
// Class for testing passing in external frame buffers to libvpx.
class ExternalFrameBufferTest
: public ::libvpx_test::CodecTestWithParam<vpx_codec_frame_buffer_type_t> {
class ExternalFrameBufferTest : public ::testing::Test {
protected:
ExternalFrameBufferTest()
: video_(NULL),
decoder_(NULL),
num_buffers_(0),
frame_buffer_functions_set_(false),
fb_list_(GET_PARAM(kCodedFrameBufferTypeParam)) {}
num_buffers_(0) {}
virtual void SetUp() {
video_ = new libvpx_test::WebMVideoSource(kVP9TestFile);
@ -389,7 +312,6 @@ class ExternalFrameBufferTest
int num_buffers,
vpx_get_frame_buffer_cb_fn_t cb_get,
vpx_release_frame_buffer_cb_fn_t cb_release) {
frame_buffer_functions_set_ = true;
if (num_buffers > 0) {
num_buffers_ = num_buffers;
EXPECT_TRUE(fb_list_.CreateBufferList(num_buffers_));
@ -398,10 +320,6 @@ class ExternalFrameBufferTest
return decoder_->SetFrameBufferFunctions(cb_get, cb_release, &fb_list_);
}
void SetBufferAlignment(int alignment) {
fb_list_.set_alignment(alignment);
}
vpx_codec_err_t DecodeOneFrame() {
const vpx_codec_err_t res =
decoder_->DecodeFrame(video_->cxdata(), video_->frame_size());
@ -429,15 +347,13 @@ class ExternalFrameBufferTest
// Get decompressed data
while ((img = dec_iter.Next()) != NULL) {
if (frame_buffer_functions_set_)
fb_list_.CheckXImageFrameBuffer(img);
fb_list_.CheckXImageFrameBuffer(img);
}
}
libvpx_test::WebMVideoSource *video_;
libvpx_test::VP9Decoder *decoder_;
int num_buffers_;
bool frame_buffer_functions_set_;
ExternalFrameBufferList fb_list_;
};
#endif // CONFIG_WEBM_IO
@ -488,7 +404,7 @@ TEST_P(ExternalFrameBufferMD5Test, ExtFBMD5Match) {
}
#if CONFIG_WEBM_IO
TEST_P(ExternalFrameBufferTest, MinFrameBuffers) {
TEST_F(ExternalFrameBufferTest, MinFrameBuffers) {
// Minimum number of external frame buffers for VP9 is
// #VP9_MAXIMUM_REF_BUFFERS + #VPX_MAXIMUM_WORK_BUFFERS.
const int num_buffers = VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
@ -498,7 +414,7 @@ TEST_P(ExternalFrameBufferTest, MinFrameBuffers) {
ASSERT_EQ(VPX_CODEC_OK, DecodeRemainingFrames());
}
TEST_P(ExternalFrameBufferTest, EightJitterBuffers) {
TEST_F(ExternalFrameBufferTest, EightJitterBuffers) {
// Number of buffers equals #VP9_MAXIMUM_REF_BUFFERS +
// #VPX_MAXIMUM_WORK_BUFFERS + eight jitter buffers.
const int jitter_buffers = 8;
@ -510,7 +426,7 @@ TEST_P(ExternalFrameBufferTest, EightJitterBuffers) {
ASSERT_EQ(VPX_CODEC_OK, DecodeRemainingFrames());
}
TEST_P(ExternalFrameBufferTest, NotEnoughBuffers) {
TEST_F(ExternalFrameBufferTest, NotEnoughBuffers) {
// Minimum number of external frame buffers for VP9 is
// #VP9_MAXIMUM_REF_BUFFERS + #VPX_MAXIMUM_WORK_BUFFERS. Most files will
// only use 5 frame buffers at one time.
@ -522,7 +438,7 @@ TEST_P(ExternalFrameBufferTest, NotEnoughBuffers) {
ASSERT_EQ(VPX_CODEC_MEM_ERROR, DecodeRemainingFrames());
}
TEST_P(ExternalFrameBufferTest, NoRelease) {
TEST_F(ExternalFrameBufferTest, NoRelease) {
const int num_buffers = VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
ASSERT_EQ(VPX_CODEC_OK,
SetFrameBufferFunctions(num_buffers, get_vp9_frame_buffer,
@ -531,7 +447,7 @@ TEST_P(ExternalFrameBufferTest, NoRelease) {
ASSERT_EQ(VPX_CODEC_MEM_ERROR, DecodeRemainingFrames());
}
TEST_P(ExternalFrameBufferTest, NullRealloc) {
TEST_F(ExternalFrameBufferTest, NullRealloc) {
const int num_buffers = VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
ASSERT_EQ(VPX_CODEC_OK,
SetFrameBufferFunctions(num_buffers, get_vp9_zero_frame_buffer,
@ -539,11 +455,7 @@ TEST_P(ExternalFrameBufferTest, NullRealloc) {
ASSERT_EQ(VPX_CODEC_MEM_ERROR, DecodeOneFrame());
}
TEST_P(ExternalFrameBufferTest, ReallocOneLessByte) {
if (GET_PARAM(kCodedFrameBufferTypeParam) ==
VPX_CODEC_FRAME_BUFFER_TYPE_PLANES)
return;
TEST_F(ExternalFrameBufferTest, ReallocOneLessByte) {
const int num_buffers = VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
ASSERT_EQ(VPX_CODEC_OK,
SetFrameBufferFunctions(
@ -552,50 +464,29 @@ TEST_P(ExternalFrameBufferTest, ReallocOneLessByte) {
ASSERT_EQ(VPX_CODEC_MEM_ERROR, DecodeOneFrame());
}
TEST_P(ExternalFrameBufferTest, NullGetFunction) {
TEST_F(ExternalFrameBufferTest, NullGetFunction) {
const int num_buffers = VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
ASSERT_EQ(VPX_CODEC_INVALID_PARAM,
SetFrameBufferFunctions(num_buffers, NULL,
release_vp9_frame_buffer));
}
TEST_P(ExternalFrameBufferTest, NullReleaseFunction) {
TEST_F(ExternalFrameBufferTest, NullReleaseFunction) {
const int num_buffers = VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
ASSERT_EQ(VPX_CODEC_INVALID_PARAM,
SetFrameBufferFunctions(num_buffers, get_vp9_frame_buffer, NULL));
}
TEST_P(ExternalFrameBufferTest, SetAfterDecode) {
TEST_F(ExternalFrameBufferTest, SetAfterDecode) {
const int num_buffers = VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
ASSERT_EQ(VPX_CODEC_OK, DecodeOneFrame());
ASSERT_EQ(VPX_CODEC_ERROR,
SetFrameBufferFunctions(
num_buffers, get_vp9_frame_buffer, release_vp9_frame_buffer));
}
TEST_P(ExternalFrameBufferTest, InvalidAlignement) {
if (GET_PARAM(kCodedFrameBufferTypeParam) ==
VPX_CODEC_FRAME_BUFFER_TYPE_SIZE)
return;
const int num_buffers =
VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
ASSERT_EQ(VPX_CODEC_OK,
SetFrameBufferFunctions(
num_buffers, get_vp9_frame_buffer, release_vp9_frame_buffer));
SetBufferAlignment(15);
ASSERT_EQ(VPX_CODEC_MEM_ERROR, DecodeRemainingFrames());
}
VP9_INSTANTIATE_TEST_CASE(ExternalFrameBufferTest,
::testing::Values(
VPX_CODEC_FRAME_BUFFER_TYPE_SIZE,
VPX_CODEC_FRAME_BUFFER_TYPE_PLANES));
#endif // CONFIG_WEBM_IO
VP9_INSTANTIATE_TEST_CASE(ExternalFrameBufferMD5Test,
::testing::Values(VPX_CODEC_FRAME_BUFFER_TYPE_SIZE,
VPX_CODEC_FRAME_BUFFER_TYPE_PLANES),
::testing::ValuesIn(libvpx_test::kVP9TestVectors,
libvpx_test::kVP9TestVectors +
libvpx_test::kNumVP9TestVectors));

49
vpx/vpx_frame_buffer.h
View File

@ -19,7 +19,6 @@
extern "C" {
#endif
#include "./vpx_image.h"
#include "./vpx_integer.h"
/*!\brief The maximum number of work buffers used by libvpx.
@ -33,60 +32,24 @@ extern "C" {
*/
#define VP9_MAXIMUM_REF_BUFFERS 8
/*!\brief The maximum number of planes that can be allocated by an external
* frame buffer.
*/
#define VP9_MAXIMUM_EXTERNAL_PLANES 3
/*!\brief External frame buffer allocation type.
* This enum defines if the external frame buffer contains one allocation for
* all the planes contained in the frame buffer, or one allocation per plane.
*/
typedef enum vpx_codec_frame_buffer_type {
VPX_CODEC_FRAME_BUFFER_TYPE_SIZE = 1,
VPX_CODEC_FRAME_BUFFER_TYPE_PLANES = 2
} vpx_codec_frame_buffer_type_t;
/*!\brief External frame buffer
*
* This structure holds allocated frame buffers used by the decoder.
*/
typedef struct vpx_codec_frame_buffer {
vpx_img_fmt_t fmt; /**< Requested framebuffer format. */
size_t width; /**< Logical width of the frame. */
size_t height; /**< Logical height of the frame. */
/*! Whether data and size, or plane and stride should be used. */
vpx_codec_frame_buffer_type_t type;
uint8_t *data; /**< Pointer to the data buffer */
size_t size; /**< Size of data in bytes */
/*! Pointers for each plane buffer */
uint8_t *plane[VP9_MAXIMUM_EXTERNAL_PLANES];
int stride[VP9_MAXIMUM_EXTERNAL_PLANES]; /**< Strides for each plane */
void *priv; /**< Frame's private data */
} vpx_codec_frame_buffer_t;
/*!\brief get frame buffer callback prototype
*
* This callback is invoked by the decoder to allocate storage for the frame
* buffer in order for the decode call to complete.
* The callback can allocate one buffer for all the frame buffers, or one buffer
* per plane with the number and size of planes determined by fb->fmt.
* If the application decides to allocate only one buffer, fb->type must be set
* to #VPX_CODEC_FRAME_BUFFER_SIZE, the buffer size must be at least |min_size|
* in bytes and the pointer to the buffer must be assigned to fb->data.
* Then the callback must set fb->size to the allocated size.
* The application does not need to align the allocated data.
* If the application decides to allocate one buffer per plane, fb->type must be
* set to #VPX_CODEC_FRAME_BUFFER_PLANES, the buffer pointers must be assigned
* to fb->plane, and their strides to fb->stride.
* The application provided buffers and strides must be aligned to 32 bytes.
* The callback must zero out all the buffers allocated.
*
* The callback is triggered when the decoder needs a frame buffer to
* This callback is invoked by the decoder to retrieve data for the frame
* buffer in order for the decode call to complete. The callback must
* allocate at least min_size in bytes and assign it to fb->data. The callback
* must zero out all the data allocated. Then the callback must set fb->size
* to the allocated size. The application does not need to align the allocated
* data. The callback is triggered when the decoder needs a frame buffer to
* decode a compressed image into. This function may be called more than once
* for every call to vpx_codec_decode. The application may set fb->priv to
* some data which will be passed back in the ximage and the release function

78
vpx_scale/generic/yv12config.c
View File

@ -178,51 +178,23 @@ int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
if (external_frame_size != (size_t)external_frame_size)
return -1;
fb->type = VPX_CODEC_FRAME_BUFFER_TYPE_SIZE;
if (ybf->subsampling_y) {
fb->fmt = ybf->subsampling_x ? VPX_IMG_FMT_I420 : VPX_IMG_FMT_I440;
} else {
fb->fmt = ybf->subsampling_x ? VPX_IMG_FMT_I422 : VPX_IMG_FMT_I444;
}
fb->width = aligned_width + border * 2;
fb->height = aligned_height + border * 2;
// Allocation to hold larger frame, or first allocation.
if (cb(cb_priv, (size_t)external_frame_size, fb) < 0)
return -1;
if (fb->type == VPX_CODEC_FRAME_BUFFER_TYPE_SIZE) {
if (fb->data == NULL || fb->size < external_frame_size)
return -1;
if (fb->data == NULL || fb->size < external_frame_size)
return -1;
ybf->buffer_alloc = (uint8_t *)yv12_align_addr(fb->data, 32);
ybf->buffer_alloc = (uint8_t *)yv12_align_addr(fb->data, 32);
#if defined(__has_feature)
#if __has_feature(memory_sanitizer)
// This memset is needed for fixing the issue of using uninitialized
// value in msan test. It will cause a perf loss, so only do this for
// msan test.
memset(ybf->buffer_alloc, 0, (int)frame_size);
// This memset is needed for fixing the issue of using uninitialized
// value in msan test. It will cause a perf loss, so only do this for
// msan test.
memset(ybf->buffer_alloc, 0, (int)frame_size);
#endif
#endif
} else { // VPX_CODEC_FRAME_BUFFER_TYPE_PLANES
if (fb->plane[0] == NULL || fb->plane[1] == NULL ||
fb->plane[2] == NULL || !fb->stride[0] || !fb->stride[1] ||
!fb->stride[2])
return -1;
// buffers should be 32 bytes aligned.
if ((fb->stride[0] & 0x1f) || (fb->stride[1] & 0x1f))
return -3;
if (fb->stride[1] != fb->stride[2])
return -3;
ybf->y_stride = fb->stride[0];
ybf->uv_stride = fb->stride[1];
ybf->y_buffer = fb->plane[0];
ybf->u_buffer = fb->plane[1];
ybf->v_buffer = fb->plane[2];
}
} else if (frame_size > (size_t)ybf->buffer_alloc_sz) {
// Allocation to hold larger frame, or first allocation.
vpx_free(ybf->buffer_alloc);
@ -255,11 +227,13 @@ int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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;
@ -267,28 +241,24 @@ int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
ybf->subsampling_y = ss_y;
buf = ybf->buffer_alloc;
if (buf != NULL) {
ybf->y_stride = y_stride;
ybf->uv_stride = uv_stride;
#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;
}
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);
}
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);
ybf->corrupted = 0; /* assume not corrupted by errors */
return 0;