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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. */ /*!\file * \brief Describes the aom image descriptor and associated operations * */ #ifndef AOM_AOM_AOM_IMAGE_H_ #define AOM_AOM_AOM_IMAGE_H_ #ifdef __cplusplus extern "C" { #endif #include "aom/aom_integer.h" /*!\brief Current ABI version number * * \internal * If this file is altered in any way that changes the ABI, this value * must be bumped. Examples include, but are not limited to, changing * types, removing or reassigning enums, adding/removing/rearranging * fields to structures */ #define AOM_IMAGE_ABI_VERSION (9) /**<\hideinitializer*/ #define AOM_IMG_FMT_PLANAR 0x100 /**< Image is a planar format. */ #define AOM_IMG_FMT_UV_FLIP 0x200 /**< V plane precedes U in memory. */ /** 0x400 used to signal alpha channel, skipping for backwards compatibility. */ #define AOM_IMG_FMT_HIGHBITDEPTH 0x800 /**< Image uses 16bit framebuffer. */ /*!\brief List of supported image formats */ typedef enum aom_img_fmt { AOM_IMG_FMT_NONE, AOM_IMG_FMT_YV12 = AOM_IMG_FMT_PLANAR | AOM_IMG_FMT_UV_FLIP | 1, /**< planar YVU */ AOM_IMG_FMT_I420 = AOM_IMG_FMT_PLANAR | 2, AOM_IMG_FMT_AOMYV12 = AOM_IMG_FMT_PLANAR | AOM_IMG_FMT_UV_FLIP | 3, /** < planar 4:2:0 format with aom color space */ AOM_IMG_FMT_AOMI420 = AOM_IMG_FMT_PLANAR | 4, AOM_IMG_FMT_I422 = AOM_IMG_FMT_PLANAR | 5, AOM_IMG_FMT_I444 = AOM_IMG_FMT_PLANAR | 6, /*!\brief Allows detection of the presence of AOM_IMG_FMT_NV12 at compile time. */ #define AOM_HAVE_IMG_FMT_NV12 1 AOM_IMG_FMT_NV12 = AOM_IMG_FMT_PLANAR | 7, /**< 4:2:0 with U and V interleaved */ AOM_IMG_FMT_I42016 = AOM_IMG_FMT_I420 | AOM_IMG_FMT_HIGHBITDEPTH, AOM_IMG_FMT_YV1216 = AOM_IMG_FMT_YV12 | AOM_IMG_FMT_HIGHBITDEPTH, AOM_IMG_FMT_I42216 = AOM_IMG_FMT_I422 | AOM_IMG_FMT_HIGHBITDEPTH, AOM_IMG_FMT_I44416 = AOM_IMG_FMT_I444 | AOM_IMG_FMT_HIGHBITDEPTH, } aom_img_fmt_t; /**< alias for enum aom_img_fmt */ /*!\brief List of supported color primaries */ typedef enum aom_color_primaries { AOM_CICP_CP_RESERVED_0 = 0, /**< For future use */ AOM_CICP_CP_BT_709 = 1, /**< BT.709 */ AOM_CICP_CP_UNSPECIFIED = 2, /**< Unspecified */ AOM_CICP_CP_RESERVED_3 = 3, /**< For future use */ AOM_CICP_CP_BT_470_M = 4, /**< BT.470 System M (historical) */ AOM_CICP_CP_BT_470_B_G = 5, /**< BT.470 System B, G (historical) */ AOM_CICP_CP_BT_601 = 6, /**< BT.601 */ AOM_CICP_CP_SMPTE_240 = 7, /**< SMPTE 240 */ AOM_CICP_CP_GENERIC_FILM = 8, /**< Generic film (color filters using illuminant C) */ AOM_CICP_CP_BT_2020 = 9, /**< BT.2020, BT.2100 */ AOM_CICP_CP_XYZ = 10, /**< SMPTE 428 (CIE 1921 XYZ) */ AOM_CICP_CP_SMPTE_431 = 11, /**< SMPTE RP 431-2 */ AOM_CICP_CP_SMPTE_432 = 12, /**< SMPTE EG 432-1 */ AOM_CICP_CP_RESERVED_13 = 13, /**< For future use (values 13 - 21) */ AOM_CICP_CP_EBU_3213 = 22, /**< EBU Tech. 3213-E */ AOM_CICP_CP_RESERVED_23 = 23 /**< For future use (values 23 - 255) */ } aom_color_primaries_t; /**< alias for enum aom_color_primaries */ /*!\brief List of supported transfer functions */ typedef enum aom_transfer_characteristics { AOM_CICP_TC_RESERVED_0 = 0, /**< For future use */ AOM_CICP_TC_BT_709 = 1, /**< BT.709 */ AOM_CICP_TC_UNSPECIFIED = 2, /**< Unspecified */ AOM_CICP_TC_RESERVED_3 = 3, /**< For future use */ AOM_CICP_TC_BT_470_M = 4, /**< BT.470 System M (historical) */ AOM_CICP_TC_BT_470_B_G = 5, /**< BT.470 System B, G (historical) */ AOM_CICP_TC_BT_601 = 6, /**< BT.601 */ AOM_CICP_TC_SMPTE_240 = 7, /**< SMPTE 240 M */ AOM_CICP_TC_LINEAR = 8, /**< Linear */ AOM_CICP_TC_LOG_100 = 9, /**< Logarithmic (100 : 1 range) */ AOM_CICP_TC_LOG_100_SQRT10 = 10, /**< Logarithmic (100 * Sqrt(10) : 1 range) */ AOM_CICP_TC_IEC_61966 = 11, /**< IEC 61966-2-4 */ AOM_CICP_TC_BT_1361 = 12, /**< BT.1361 */ AOM_CICP_TC_SRGB = 13, /**< sRGB or sYCC*/ AOM_CICP_TC_BT_2020_10_BIT = 14, /**< BT.2020 10-bit systems */ AOM_CICP_TC_BT_2020_12_BIT = 15, /**< BT.2020 12-bit systems */ AOM_CICP_TC_SMPTE_2084 = 16, /**< SMPTE ST 2084, ITU BT.2100 PQ */ AOM_CICP_TC_SMPTE_428 = 17, /**< SMPTE ST 428 */ AOM_CICP_TC_HLG = 18, /**< BT.2100 HLG, ARIB STD-B67 */ AOM_CICP_TC_RESERVED_19 = 19 /**< For future use (values 19-255) */ } aom_transfer_characteristics_t; /**< alias for enum aom_transfer_characteristics */ /*!\brief List of supported matrix coefficients */ typedef enum aom_matrix_coefficients { AOM_CICP_MC_IDENTITY = 0, /**< Identity matrix */ AOM_CICP_MC_BT_709 = 1, /**< BT.709 */ AOM_CICP_MC_UNSPECIFIED = 2, /**< Unspecified */ AOM_CICP_MC_RESERVED_3 = 3, /**< For future use */ AOM_CICP_MC_FCC = 4, /**< US FCC 73.628 */ AOM_CICP_MC_BT_470_B_G = 5, /**< BT.470 System B, G (historical) */ AOM_CICP_MC_BT_601 = 6, /**< BT.601 */ AOM_CICP_MC_SMPTE_240 = 7, /**< SMPTE 240 M */ AOM_CICP_MC_SMPTE_YCGCO = 8, /**< YCgCo */ AOM_CICP_MC_BT_2020_NCL = 9, /**< BT.2020 non-constant luminance, BT.2100 YCbCr */ AOM_CICP_MC_BT_2020_CL = 10, /**< BT.2020 constant luminance */ AOM_CICP_MC_SMPTE_2085 = 11, /**< SMPTE ST 2085 YDzDx */ AOM_CICP_MC_CHROMAT_NCL = 12, /**< Chromaticity-derived non-constant luminance */ AOM_CICP_MC_CHROMAT_CL = 13, /**< Chromaticity-derived constant luminance */ AOM_CICP_MC_ICTCP = 14, /**< BT.2100 ICtCp */ AOM_CICP_MC_RESERVED_15 = 15 /**< For future use (values 15-255) */ } aom_matrix_coefficients_t; /**< alias for enum aom_matrix_coefficients */ /*!\brief List of supported color range */ typedef enum aom_color_range { AOM_CR_STUDIO_RANGE = 0, /**<- Y [16..235], UV [16..240] (bit depth 8) */ /**<- Y [64..940], UV [64..960] (bit depth 10) */ /**<- Y [256..3760], UV [256..3840] (bit depth 12) */ AOM_CR_FULL_RANGE = 1 /**<- YUV/RGB [0..255] (bit depth 8) */ /**<- YUV/RGB [0..1023] (bit depth 10) */ /**<- YUV/RGB [0..4095] (bit depth 12) */ } aom_color_range_t; /**< alias for enum aom_color_range */ /*!\brief List of chroma sample positions */ typedef enum aom_chroma_sample_position { AOM_CSP_UNKNOWN = 0, /**< Unknown */ AOM_CSP_VERTICAL = 1, /**< Horizontally co-located with luma(0, 0)*/ /**< sample, between two vertical samples */ AOM_CSP_COLOCATED = 2, /**< Co-located with luma(0, 0) sample */ AOM_CSP_RESERVED = 3 /**< Reserved value */ } aom_chroma_sample_position_t; /**< alias for enum aom_chroma_sample_position */ /*!\brief List of insert flags for Metadata * * These flags control how the library treats metadata during encode. * * While encoding, when metadata is added to an aom_image via * aom_img_add_metadata(), the flag passed along with the metadata will * determine where the metadata OBU will be placed in the encoded OBU stream. * Metadata will be emitted into the output stream within the next temporal unit * if it satisfies the specified insertion flag. * * During decoding, when the library encounters a metadata OBU, it is always * flagged as AOM_MIF_ANY_FRAME and emitted with the next output aom_image. */ typedef enum aom_metadata_insert_flags { AOM_MIF_NON_KEY_FRAME = 0, /**< Adds metadata if it's not keyframe */ AOM_MIF_KEY_FRAME = 1, /**< Adds metadata only if it's a keyframe */ AOM_MIF_ANY_FRAME = 2 /**< Adds metadata to any type of frame */ } aom_metadata_insert_flags_t; /*!\brief Array of aom_metadata structs for an image. */ typedef struct aom_metadata_array aom_metadata_array_t; /*!\brief Metadata payload. */ typedef struct aom_metadata { uint32_t type; /**< Metadata type */ uint8_t *payload; /**< Metadata payload data */ size_t sz; /**< Metadata payload size */ aom_metadata_insert_flags_t insert_flag; /**< Metadata insertion flag */ } aom_metadata_t; /**\brief Image Descriptor */ typedef struct aom_image { aom_img_fmt_t fmt; /**< Image Format */ aom_color_primaries_t cp; /**< CICP Color Primaries */ aom_transfer_characteristics_t tc; /**< CICP Transfer Characteristics */ aom_matrix_coefficients_t mc; /**< CICP Matrix Coefficients */ int monochrome; /**< Whether image is monochrome */ aom_chroma_sample_position_t csp; /**< chroma sample position */ aom_color_range_t range; /**< Color Range */ /* Image storage dimensions */ unsigned int w; /**< Stored image width */ unsigned int h; /**< Stored image height */ unsigned int bit_depth; /**< Stored image bit-depth */ /* Image display dimensions */ unsigned int d_w; /**< Displayed image width */ unsigned int d_h; /**< Displayed image height */ /* Image intended rendering dimensions */ unsigned int r_w; /**< Intended rendering image width */ unsigned int r_h; /**< Intended rendering image height */ /* Chroma subsampling info */ unsigned int x_chroma_shift; /**< subsampling order, X */ unsigned int y_chroma_shift; /**< subsampling order, Y */ /* Image data pointers. */ #define AOM_PLANE_PACKED 0 /**< To be used for all packed formats */ #define AOM_PLANE_Y 0 /**< Y (Luminance) plane */ #define AOM_PLANE_U 1 /**< U (Chroma) plane */ #define AOM_PLANE_V 2 /**< V (Chroma) plane */ /* planes[AOM_PLANE_V] = NULL and stride[AOM_PLANE_V] = 0 when fmt == * AOM_IMG_FMT_NV12 */ unsigned char *planes[3]; /**< pointer to the top left pixel for each plane */ int stride[3]; /**< stride between rows for each plane */ size_t sz; /**< data size */ int bps; /**< bits per sample (for packed formats) */ int temporal_id; /**< Temporal layer Id of image */ int spatial_id; /**< Spatial layer Id of image */ /*!\brief The following member may be set by the application to associate * data with this image. */ void *user_priv; /* The following members should be treated as private. */ unsigned char *img_data; /**< private */ int img_data_owner; /**< private */ int self_allocd; /**< private */ aom_metadata_array_t *metadata; /**< Metadata payloads associated with the image. */ void *fb_priv; /**< Frame buffer data associated with the image. */ } aom_image_t; /**< alias for struct aom_image */ /*!\brief Open a descriptor, allocating storage for the underlying image * * Returns a descriptor for storing an image of the given format. The * storage for the image is allocated on the heap. * * \param[in] img Pointer to storage for descriptor. If this parameter * is NULL, the storage for the descriptor will be * allocated on the heap. * \param[in] fmt Format for the image * \param[in] d_w Width of the image. Must not exceed 0x08000000 * (2^27). * \param[in] d_h Height of the image. Must not exceed 0x08000000 * (2^27). * \param[in] align Alignment, in bytes, of the image buffer and * each row in the image (stride). Must not exceed * 65536. * * \return Returns a pointer to the initialized image descriptor. If the img * parameter is non-null, the value of the img parameter will be * returned. */ aom_image_t *aom_img_alloc(aom_image_t *img, aom_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align); /*!\brief Open a descriptor, using existing storage for the underlying image * * Returns a descriptor for storing an image of the given format. The * storage for the image has been allocated elsewhere, and a descriptor is * desired to "wrap" that storage. * * \param[in] img Pointer to storage for descriptor. If this parameter * is NULL, the storage for the descriptor will be * allocated on the heap. * \param[in] fmt Format for the image * \param[in] d_w Width of the image. Must not exceed 0x08000000 * (2^27). * \param[in] d_h Height of the image. Must not exceed 0x08000000 * (2^27). * \param[in] align Alignment, in bytes, of each row in the image * (stride). Must not exceed 65536. * \param[in] img_data Storage to use for the image. The storage must * outlive the returned image descriptor; it can be * disposed of after calling aom_img_free(). * * \return Returns a pointer to the initialized image descriptor. If the img * parameter is non-null, the value of the img parameter will be * returned. */ aom_image_t *aom_img_wrap(aom_image_t *img, aom_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align, unsigned char *img_data); /*!\brief Open a descriptor, allocating storage for the underlying image with a * border * * Returns a descriptor for storing an image of the given format and its * borders. The storage for the image is allocated on the heap. * * \param[in] img Pointer to storage for descriptor. If this parameter * is NULL, the storage for the descriptor will be * allocated on the heap. * \param[in] fmt Format for the image * \param[in] d_w Width of the image. Must not exceed 0x08000000 * (2^27). * \param[in] d_h Height of the image. Must not exceed 0x08000000 * (2^27). * \param[in] align Alignment, in bytes, of the image buffer and * each row in the image (stride). Must not exceed * 65536. * \param[in] size_align Alignment, in pixels, of the image width and height. * Must not exceed 65536. * \param[in] border A border that is padded on four sides of the image. * Must not exceed 65536. * * \return Returns a pointer to the initialized image descriptor. If the img * parameter is non-null, the value of the img parameter will be * returned. */ aom_image_t *aom_img_alloc_with_border(aom_image_t *img, aom_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align, unsigned int size_align, unsigned int border); /*!\brief Set the rectangle identifying the displayed portion of the image * * Updates the displayed rectangle (aka viewport) on the image surface to * match the specified coordinates and size. Specifically, sets img->d_w, * img->d_h, and elements of the img->planes[] array. * * \param[in] img Image descriptor * \param[in] x leftmost column * \param[in] y topmost row * \param[in] w width * \param[in] h height * \param[in] border A border that is padded on four sides of the image. * * \return 0 if the requested rectangle is valid, nonzero (-1) otherwise. */ int aom_img_set_rect(aom_image_t *img, unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned int border); /*!\brief Flip the image vertically (top for bottom) * * Adjusts the image descriptor's pointers and strides to make the image * be referenced upside-down. * * \param[in] img Image descriptor */ void aom_img_flip(aom_image_t *img); /*!\brief Close an image descriptor * * Frees all allocated storage associated with an image descriptor. * * \param[in] img Image descriptor */ void aom_img_free(aom_image_t *img); /*!\brief Get the width of a plane * * Get the width of a plane of an image * * \param[in] img Image descriptor * \param[in] plane Plane index */ int aom_img_plane_width(const aom_image_t *img, int plane); /*!\brief Get the height of a plane * * Get the height of a plane of an image * * \param[in] img Image descriptor * \param[in] plane Plane index */ int aom_img_plane_height(const aom_image_t *img, int plane); /*!\brief Add metadata to image. * * Adds metadata to aom_image_t. * Function makes a copy of the provided data parameter. * Metadata insertion point is controlled by insert_flag. * * \param[in] img Image descriptor * \param[in] type Metadata type * \param[in] data Metadata contents * \param[in] sz Metadata contents size * \param[in] insert_flag Metadata insert flag * * \return Returns 0 on success. If img or data is NULL, sz is 0, or memory * allocation fails, it returns -1. */ int aom_img_add_metadata(aom_image_t *img, uint32_t type, const uint8_t *data, size_t sz, aom_metadata_insert_flags_t insert_flag); /*!\brief Return a metadata payload stored within the image metadata array. * * Gets the metadata (aom_metadata_t) at the indicated index in the image * metadata array. * * \param[in] img Pointer to image descriptor to get metadata from * \param[in] index Metadata index to get from metadata array * * \return Returns a const pointer to the selected metadata, if img and/or index * is invalid, it returns NULL. */ const aom_metadata_t *aom_img_get_metadata(const aom_image_t *img, size_t index); /*!\brief Return the number of metadata blocks within the image. * * Gets the number of metadata blocks contained within the provided image * metadata array. * * \param[in] img Pointer to image descriptor to get metadata number * from. * * \return Returns the size of the metadata array. If img or metadata is NULL, * it returns 0. */ size_t aom_img_num_metadata(const aom_image_t *img); /*!\brief Remove metadata from image. * * Removes all metadata in image metadata list and sets metadata list pointer * to NULL. * * \param[in] img Image descriptor */ void aom_img_remove_metadata(aom_image_t *img); /*!\brief Allocate memory for aom_metadata struct. * * Allocates storage for the metadata payload, sets its type and copies the * payload data into the aom_metadata struct. A metadata payload buffer of size * sz is allocated and sz bytes are copied from data into the payload buffer. * * \param[in] type Metadata type * \param[in] data Metadata data pointer * \param[in] sz Metadata size * \param[in] insert_flag Metadata insert flag * * \return Returns the newly allocated aom_metadata struct. If data is NULL, * sz is 0, or memory allocation fails, it returns NULL. */ aom_metadata_t *aom_img_metadata_alloc(uint32_t type, const uint8_t *data, size_t sz, aom_metadata_insert_flags_t insert_flag); /*!\brief Free metadata struct. * * Free metadata struct and its buffer. * * \param[in] metadata Metadata struct pointer */ void aom_img_metadata_free(aom_metadata_t *metadata); #ifdef __cplusplus } // extern "C" #endif #endif // AOM_AOM_AOM_IMAGE_H_