/*
 * Copyright (c) 2021, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 3-Clause Clear License
 * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
 * License was not distributed with this source code in the LICENSE file, you
 * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/.  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
 * aomedia.org/license/patent-license/.
 */
#ifndef AOM_COMMON_TOOLS_COMMON_H_
#define AOM_COMMON_TOOLS_COMMON_H_

#include <stdio.h>

#include "config/aom_config.h"

#include "aom/aom_codec.h"
#include "aom/internal/aom_image_internal.h"
#include "aom/aom_integer.h"
#include "aom_ports/mem.h"
#include "aom_ports/msvc.h"

#if CONFIG_AV1_ENCODER
#include "common/y4minput.h"
#endif

#if defined(_MSC_VER)
/* MSVS uses _f{seek,tell}i64. */
#define fseeko _fseeki64
#define ftello _ftelli64
typedef int64_t FileOffset;
#elif defined(_WIN32)
#include <sys/types.h> /* NOLINT*/
/* MinGW uses f{seek,tell}o64 for large files. */
#define fseeko fseeko64
#define ftello ftello64
typedef off64_t FileOffset;
#elif CONFIG_OS_SUPPORT
#include <sys/types.h> /* NOLINT*/
typedef off_t FileOffset;
/* Use 32-bit file operations in WebM file format when building ARM
 * executables (.axf) with RVCT. */
#else
#define fseeko fseek
#define ftello ftell
typedef long FileOffset; /* NOLINT */
#endif /* CONFIG_OS_SUPPORT */

#if CONFIG_OS_SUPPORT
#if defined(_MSC_VER)
#include <io.h> /* NOLINT */
#define isatty _isatty
#define fileno _fileno
#else
#include <unistd.h> /* NOLINT */
#endif              /* _MSC_VER */
#endif              /* CONFIG_OS_SUPPORT */

#define LITERALU64(hi, lo) ((((uint64_t)hi) << 32) | lo)

#ifndef PATH_MAX
#define PATH_MAX 512
#endif

#define IVF_FRAME_HDR_SZ (4 + 8) /* 4 byte size + 8 byte timestamp */
#define IVF_FILE_HDR_SZ 32

#define RAW_FRAME_HDR_SZ sizeof(uint32_t)

#define AV1_FOURCC 0x31305641

#if CONFIG_MULTIVIEW_CORE
#define NUM_LAYERS_MAX 256  // maximum number of layers supported
#endif

enum VideoFileType {
  FILE_TYPE_OBU,
  FILE_TYPE_RAW,
  FILE_TYPE_IVF,
  FILE_TYPE_Y4M,
  FILE_TYPE_WEBM
};

// Used in lightfield example.
enum {
  YUV1D,  // 1D tile output for conformance test.
  YUV,    // Tile output in YUV format.
  NV12,   // Tile output in NV12 format.
} UENUM1BYTE(OUTPUT_FORMAT);

// The fourcc for large_scale_tile encoding is "LSTC".
#define LST_FOURCC 0x4354534c

struct FileTypeDetectionBuffer {
  char buf[4];
  size_t buf_read;
  size_t position;
};

struct AvxRational {
  int numerator;
  int denominator;
};

struct AvxInputContext {
#if CONFIG_MULTIVIEW_CORE
  const char *filename[NUM_LAYERS_MAX];
  FILE *file[NUM_LAYERS_MAX];
  int num_views;
#else
  const char *filename;
  FILE *file;
#endif
  int64_t length;
#if CONFIG_MULTIVIEW_CORE
  struct FileTypeDetectionBuffer detect[NUM_LAYERS_MAX];
  enum VideoFileType file_type[NUM_LAYERS_MAX];
#else
  struct FileTypeDetectionBuffer detect;
  enum VideoFileType file_type;
#endif
  uint32_t width;
  uint32_t height;
  struct AvxRational pixel_aspect_ratio;
  aom_img_fmt_t fmt;
  aom_bit_depth_t bit_depth;
  int only_i420;
  uint32_t fourcc;
  struct AvxRational framerate;
#if CONFIG_AV1_ENCODER
#if CONFIG_MULTIVIEW_CORE
  y4m_input y4m[NUM_LAYERS_MAX];
#else
  y4m_input y4m;
#endif
#endif
  aom_color_range_t color_range;
};

#ifdef __cplusplus
extern "C" {
#endif

#if defined(__GNUC__)
#define AOM_NO_RETURN __attribute__((noreturn))
#else
#define AOM_NO_RETURN
#endif

/* Sets a stdio stream into binary mode */
FILE *set_binary_mode(FILE *stream);

void die(const char *fmt, ...) AOM_NO_RETURN;
void fatal(const char *fmt, ...) AOM_NO_RETURN;
void warn(const char *fmt, ...);

void die_codec(aom_codec_ctx_t *ctx, const char *s) AOM_NO_RETURN;

/* The tool including this file must define usage_exit() */
void usage_exit(void) AOM_NO_RETURN;

#undef AOM_NO_RETURN

// The AOM library can support different encoders / decoders. These
// functions provide different ways to lookup / iterate through them.
// The return result may be NULL to indicate no codec was found.
int get_aom_encoder_count();
aom_codec_iface_t *get_aom_encoder_by_index(int i);
aom_codec_iface_t *get_aom_encoder_by_short_name(const char *name);
// If the interface is unknown, returns NULL.
const char *get_short_name_by_aom_encoder(aom_codec_iface_t *encoder);
// If the interface is unknown, returns 0.
uint32_t get_fourcc_by_aom_encoder(aom_codec_iface_t *iface);

int get_aom_decoder_count();
aom_codec_iface_t *get_aom_decoder_by_index(int i);
aom_codec_iface_t *get_aom_decoder_by_short_name(const char *name);
aom_codec_iface_t *get_aom_decoder_by_fourcc(uint32_t fourcc);
const char *get_short_name_by_aom_decoder(aom_codec_iface_t *decoder);
// If the interface is unknown, returns 0.
uint32_t get_fourcc_by_aom_decoder(aom_codec_iface_t *iface);

#if CONFIG_MULTIVIEW_CORE
int read_yuv_frame(struct AvxInputContext *input_ctx, aom_image_t *yuv_frame,
                   int view_id);
#else
int read_yuv_frame(struct AvxInputContext *input_ctx, aom_image_t *yuv_frame);
#endif

void aom_img_write(const aom_image_t *img, FILE *file);
int aom_img_read(aom_image_t *img, FILE *file);

double sse_to_psnr(double samples, double peak, double mse);
void aom_img_downshift(aom_image_t *dst, const aom_image_t *src, int down_shift,
                       int out_bit_depth);
void aom_shift_img(unsigned int output_bit_depth, aom_image_t **img_ptr,
                   aom_image_t **img_shifted_ptr);
void aom_img_truncate_16_to_8(aom_image_t *dst, const aom_image_t *src);

// Output in NV12 format.
void aom_img_write_nv12(const aom_image_t *img, FILE *file);

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif  // AOM_COMMON_TOOLS_COMMON_H_