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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.
*/
/*!\defgroup aom AOM
* \ingroup codecs
* AOM is aom's newest video compression algorithm that uses motion
* compensated prediction, Discrete Cosine Transform (DCT) coding of the
* prediction error signal and context dependent entropy coding techniques
* based on arithmetic principles. It features:
* - YUV 4:2:0 image format
* - Macro-block based coding (16x16 luma plus two 8x8 chroma)
* - 1/4 (1/8) pixel accuracy motion compensated prediction
* - 4x4 DCT transform
* - 128 level linear quantizer
* - In loop deblocking filter
* - Context-based entropy coding
*
* @{
*/
/*!\file
* \brief Provides controls common to both the AOM encoder and decoder.
*/
#ifndef AOM_AOM_AOM_H_
#define AOM_AOM_AOM_H_
#include "aom/aom_codec.h"
#include "aom/aom_image.h"
#ifdef __cplusplus
extern "C" {
#endif
/*!\brief Control functions
*
* The set of macros define the control functions of AOM interface
*/
enum aom_com_control_id {
/*!\brief pass in an external frame into decoder to be used as reference frame
*/
AOM_SET_POSTPROC = 3, /**< set the decoder's post processing settings */
AOM_SET_DBG_COLOR_REF_FRAME =
4, /**< set the reference frames to color for each macroblock */
AOM_SET_DBG_COLOR_MB_MODES = 5, /**< set which macro block modes to color */
AOM_SET_DBG_COLOR_B_MODES = 6, /**< set which blocks modes to color */
AOM_SET_DBG_DISPLAY_MV = 7, /**< set which motion vector modes to draw */
/* TODO(jkoleszar): The encoder incorrectly reuses some of these values (5+)
* for its control ids. These should be migrated to something like the
* AOM_DECODER_CTRL_ID_START range next time we're ready to break the ABI.
*/
AV1_GET_REFERENCE = 128, /**< get a pointer to a reference frame */
AV1_SET_REFERENCE = 129, /**< write a frame into a reference buffer */
AV1_COPY_REFERENCE =
130, /**< get a copy of reference frame from the decoder */
AOM_COMMON_CTRL_ID_MAX,
AV1_GET_NEW_FRAME_IMAGE = 192, /**< get a pointer to the new frame */
AV1_COPY_NEW_FRAME_IMAGE =
193, /**< copy the new frame to an external buffer */
AOM_DECODER_CTRL_ID_START = 256
};
/*!\brief post process flags
*
* The set of macros define AOM decoder post processing flags
*/
enum aom_postproc_level {
AOM_NOFILTERING = 0,
AOM_DEBLOCK = 1 << 0,
AOM_DEMACROBLOCK = 1 << 1,
AOM_ADDNOISE = 1 << 2,
AOM_DEBUG_TXT_FRAME_INFO = 1 << 3, /**< print frame information */
AOM_DEBUG_TXT_MBLK_MODES =
1 << 4, /**< print macro block modes over each macro block */
AOM_DEBUG_TXT_DC_DIFF = 1 << 5, /**< print dc diff for each macro block */
AOM_DEBUG_TXT_RATE_INFO = 1 << 6, /**< print video rate info (encoder only) */
AOM_MFQE = 1 << 10
};
/*!\brief post process flags
*
* This define a structure that describe the post processing settings. For
* the best objective measure (using the PSNR metric) set post_proc_flag
* to AOM_DEBLOCK and deblocking_level to 1.
*/
typedef struct aom_postproc_cfg {
/*!\brief the types of post processing to be done, should be combination of
* "aom_postproc_level" */
int post_proc_flag;
int deblocking_level; /**< the strength of deblocking, valid range [0, 16] */
int noise_level; /**< the strength of additive noise, valid range [0, 16] */
} aom_postproc_cfg_t;
/*!\brief AV1 specific reference frame data struct
*
* Define the data struct to access av1 reference frames.
*/
typedef struct av1_ref_frame {
int idx; /**< frame index to get (input) */
int use_external_ref; /**< Directly use external ref buffer(decoder only) */
aom_image_t img; /**< img structure to populate (output) */
} av1_ref_frame_t;
/*!\cond */
/*!\brief aom decoder control function parameter type
*
* defines the data type for each of AOM decoder control function requires
*/
AOM_CTRL_USE_TYPE(AOM_SET_POSTPROC, aom_postproc_cfg_t *)
#define AOM_CTRL_AOM_SET_POSTPROC
AOM_CTRL_USE_TYPE(AOM_SET_DBG_COLOR_REF_FRAME, int)
#define AOM_CTRL_AOM_SET_DBG_COLOR_REF_FRAME
AOM_CTRL_USE_TYPE(AOM_SET_DBG_COLOR_MB_MODES, int)
#define AOM_CTRL_AOM_SET_DBG_COLOR_MB_MODES
AOM_CTRL_USE_TYPE(AOM_SET_DBG_COLOR_B_MODES, int)
#define AOM_CTRL_AOM_SET_DBG_COLOR_B_MODES
AOM_CTRL_USE_TYPE(AOM_SET_DBG_DISPLAY_MV, int)
#define AOM_CTRL_AOM_SET_DBG_DISPLAY_MV
AOM_CTRL_USE_TYPE(AV1_GET_REFERENCE, av1_ref_frame_t *)
#define AOM_CTRL_AV1_GET_REFERENCE
AOM_CTRL_USE_TYPE(AV1_SET_REFERENCE, av1_ref_frame_t *)
#define AOM_CTRL_AV1_SET_REFERENCE
AOM_CTRL_USE_TYPE(AV1_COPY_REFERENCE, av1_ref_frame_t *)
#define AOM_CTRL_AV1_COPY_REFERENCE
AOM_CTRL_USE_TYPE(AV1_GET_NEW_FRAME_IMAGE, aom_image_t *)
#define AOM_CTRL_AV1_GET_NEW_FRAME_IMAGE
AOM_CTRL_USE_TYPE(AV1_COPY_NEW_FRAME_IMAGE, aom_image_t *)
#define AOM_CTRL_AV1_COPY_NEW_FRAME_IMAGE
/*!\endcond */
/*! @} - end defgroup aom */
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AOM_AOM_H_
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