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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"
#define AOMINNERBORDERINPIXELS 160
#define AOM_INTERP_EXTEND 4
// TODO(jingning): Use unified inter predictor for encoder and
// decoder during the development process. Revisit the frame border
// to improve the decoder performance.
#if CONFIG_REDUCED_ENCODER_BORDER
#define AOM_BORDER_IN_PIXELS 160
#else
#define AOM_BORDER_IN_PIXELS 288
#endif // CONFIG_REDUCED_ENCODER_BORDER
typedef struct yv12_buffer_config {
union {
struct {
int y_width;
int uv_width;
int alpha_width;
};
int widths[3];
};
union {
struct {
int y_height;
int uv_height;
int alpha_height;
};
int heights[3];
};
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 alpha_stride;
};
int strides[3];
};
union {
struct {
uint8_t *y_buffer;
uint8_t *u_buffer;
uint8_t *v_buffer;
uint8_t *alpha_buffer;
};
uint8_t *buffers[4];
};
// 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];
// If the frame is stored in a 16-bit buffer, this stores an 8-bit version
// for use in global motion detection. It is allocated on-demand.
uint8_t *y_buffer_8bit;
int buf_8bit_valid;
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;
int 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;
} YV12_BUFFER_CONFIG;
#define YV12_FLAG_HIGHBITDEPTH 8
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);
// 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. 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 aom_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
#ifdef __cplusplus
}
#endif
#endif // AOM_AOM_SCALE_YV12CONFIG_H_
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