chromium/third_party/libvpx/source/libvpx/vpx/vp8.h

/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

/*!\defgroup vp8 VP8
 * \ingroup codecs
 * VP8 is a 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 VP8 encoder and decoder.
 */
#ifndef VPX_VPX_VP8_H_
#define VPX_VPX_VP8_H_

#include "./vpx_codec.h"
#include "./vpx_image.h"

#ifdef __cplusplus
extern "C" {
#endif

/*!\brief Control functions
 *
 * The set of macros define the control functions of VP8 interface
 */
enum vp8_com_control_id { … };

/*!\brief post process flags
 *
 * The set of macros define VP8 decoder post processing flags
 */
enum vp8_postproc_level { … };

/*!\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 VP8_DEBLOCK and deblocking_level to 1.
 */

vp8_postproc_cfg_t;

/*!\brief reference frame type
 *
 * The set of macros define the type of VP8 reference frames
 */
vpx_ref_frame_type_t;

/*!\brief reference frame data struct
 *
 * Define the data struct to access vp8 reference frames.
 */
vpx_ref_frame_t;

/*!\brief VP9 specific reference frame data struct
 *
 * Define the data struct to access vp9 reference frames.
 */
vp9_ref_frame_t;

/*!\cond */
/*!\brief vp8 decoder control function parameter type
 *
 * defines the data type for each of VP8 decoder control function requires
 */
VPX_CTRL_USE_TYPE(VP8_SET_REFERENCE, vpx_ref_frame_t *)
#define VPX_CTRL_VP8_SET_REFERENCE
VPX_CTRL_USE_TYPE(VP8_COPY_REFERENCE, vpx_ref_frame_t *)
#define VPX_CTRL_VP8_COPY_REFERENCE
VPX_CTRL_USE_TYPE(VP8_SET_POSTPROC, vp8_postproc_cfg_t *)
#define VPX_CTRL_VP8_SET_POSTPROC
VPX_CTRL_USE_TYPE(VP9_GET_REFERENCE, vp9_ref_frame_t *)
#define VPX_CTRL_VP9_GET_REFERENCE

/*!\endcond */
/*! @} - end defgroup vp8 */

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

#endif  // VPX_VPX_VP8_H_