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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AOM_SCALE_YV12CONFIG_H_
#define AOM_AOM_SCALE_YV12CONFIG_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "config/aom_config.h"
#include "aom/aom_codec.h"
#include "aom/aom_frame_buffer.h"
#include "aom/aom_integer.h"
#include "aom/internal/aom_image_internal.h"
/*!\cond */
#define AOMINNERBORDERINPIXELS 160
#define AOM_INTERP_EXTEND 4
#define AOM_BORDER_IN_PIXELS 288
#define AOM_ENC_NO_SCALE_BORDER 160
#define AOM_ENC_ALLINTRA_BORDER 64
#define AOM_DEC_BORDER_IN_PIXELS 64
#if CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
struct image_pyramid;
struct corner_list;
#endif // CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
/*!\endcond */
/*!
* \brief YV12 frame buffer data structure
*/
typedef struct yv12_buffer_config {
/*!\cond */
union {
struct {
int y_width;
int uv_width;
};
int widths[2];
};
union {
struct {
int y_height;
int uv_height;
};
int heights[2];
};
union {
struct {
int y_crop_width;
int uv_crop_width;
};
int crop_widths[2];
};
union {
struct {
int y_crop_height;
int uv_crop_height;
};
int crop_heights[2];
};
union {
struct {
int y_stride;
int uv_stride;
};
int strides[2];
};
union {
struct {
uint8_t *y_buffer;
uint8_t *u_buffer;
uint8_t *v_buffer;
};
uint8_t *buffers[3];
};
// Indicate whether y_buffer, u_buffer, and v_buffer points to the internally
// allocated memory or external buffers.
int use_external_reference_buffers;
// This is needed to store y_buffer, u_buffer, and v_buffer when set reference
// uses an external refernece, and restore those buffer pointers after the
// external reference frame is no longer used.
uint8_t *store_buf_adr[3];
// Global motion search data
#if CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
// 8-bit downsampling pyramid for the Y plane
struct image_pyramid *y_pyramid;
struct corner_list *corners;
#endif // CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
uint8_t *buffer_alloc;
size_t buffer_alloc_sz;
int border;
size_t frame_size;
int subsampling_x;
int subsampling_y;
unsigned int bit_depth;
aom_color_primaries_t color_primaries;
aom_transfer_characteristics_t transfer_characteristics;
aom_matrix_coefficients_t matrix_coefficients;
uint8_t monochrome;
aom_chroma_sample_position_t chroma_sample_position;
aom_color_range_t color_range;
int render_width;
int render_height;
int corrupted;
int flags;
aom_metadata_array_t *metadata;
/*!\endcond */
} YV12_BUFFER_CONFIG;
/*!\cond */
#define YV12_FLAG_HIGHBITDEPTH 8
// Allocate a frame buffer
//
// If ybf currently contains an image, all associated memory will be freed and
// then reallocated. In contrast, aom_realloc_frame_buffer() will reuse any
// existing allocations where possible. So, if ybf is likely to already be
// set up, please consider aom_realloc_frame_buffer() instead.
//
// See aom_realloc_frame_buffer() for the meanings of the arguments, and
// available return values.
int aom_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
int ss_x, int ss_y, int use_highbitdepth, int border,
int byte_alignment, int num_pyramid_levels,
int alloc_y_plane_only);
// Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
// be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
// NULL, then libaom is using the frame buffer callbacks to handle memory.
// If cb is not NULL, libaom will call cb with minimum size in bytes needed
// to decode the current frame. If cb is NULL, libaom will allocate memory
// internally to decode the current frame.
//
// If num_pyramid_levels > 0, then an image pyramid will be allocated with
// the specified number of levels.
//
// Any buffer which may become a source or ref frame buffer in the encoder
// must have num_pyramid_levels = cpi->image_pyramid_levels. This will cause
// an image pyramid to be allocated if one is needed.
//
// Any other buffers (in particular, any buffers inside the decoder)
// must have cpi->image_pyramid_levels = 0, as a pyramid is unneeded there.
//
// Returns 0 on success. Returns < 0 on failure.
int aom_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
int ss_x, int ss_y, int use_highbitdepth,
int border, int byte_alignment,
aom_codec_frame_buffer_t *fb,
aom_get_frame_buffer_cb_fn_t cb, void *cb_priv,
int num_pyramid_levels, int alloc_y_plane_only);
int aom_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
/*!\endcond */
/*!\brief Removes metadata from YUV_BUFFER_CONFIG struct.
*
* Frees metadata in frame buffer.
* Frame buffer metadata pointer will be set to NULL.
*
* \param[in] ybf Frame buffer struct pointer
*/
void aom_remove_metadata_from_frame_buffer(YV12_BUFFER_CONFIG *ybf);
/*!\brief Copy metadata to YUV_BUFFER_CONFIG struct.
*
* Copies metadata to frame buffer.
* Frame buffer will clear any previous metadata and will reallocate the
* metadata array to the new metadata size. Then, it will copy the new metadata
* array into it.
* If arr metadata pointer points to the same address as current metadata in the
* frame buffer, function will do nothing and return 0.
* Returns 0 on success or -1 on failure.
*
* \param[in] ybf Frame buffer struct pointer
* \param[in] arr Metadata array struct pointer
*/
int aom_copy_metadata_to_frame_buffer(YV12_BUFFER_CONFIG *ybf,
const aom_metadata_array_t *arr);
/*!\brief Calculate the stride required for the image.
*
* Calculates the stride value for an image from aligned width and border.
* Returns the y stride value.
*
* \param[in] aligned_width Aligned width of the image
* \param[in] border Border in pixels
*/
static AOM_INLINE int aom_calc_y_stride(int aligned_width, int border) {
return ((aligned_width + 2 * border) + 31) & ~31;
}
#ifdef __cplusplus
}
#endif
#endif // AOM_AOM_SCALE_YV12CONFIG_H_
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