/* * 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 */ typedefenum 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 */ typedefenum 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 */ typedefenum 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 color range */ typedefenum 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 */ typedefenum 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.
*/ typedefenum 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. */ typedefstruct aom_metadata_array aom_metadata_array_t;
/* Chroma subsampling info */ unsignedint x_chroma_shift; /**< subsampling order, X */ unsignedint 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 */ unsignedchar *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. */ unsignedchar *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, unsignedint d_w, unsignedint d_h, unsignedint 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, unsignedint d_w, unsignedint d_h, unsignedint align, unsignedchar *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, unsignedint d_w, unsignedint d_h, unsignedint align, unsignedint size_align, unsignedint 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, unsignedint x, unsignedint y, unsignedint w, unsignedint h, unsignedint 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);
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