/*
* Copyright (c) 2007-2012 Intel Corporation. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file va_enc_vp8.h
* \brief VP8 encoding API
*
* This file contains the \ref api_enc_vp8 "VP8 encoding API".
*/
#ifndef VA_ENC_VP8_H
#define VA_ENC_VP8_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \defgroup api_enc_vp8 VP8 encoding API
*
* @{
*/
/**
* \brief VP8 Encoding Sequence Parameter Buffer Structure
*
* This structure conveys sequence level parameters.
*
*/
typedef struct _VAEncSequenceParameterBufferVP8
{
/* frame width in pixels */
unsigned int frame_width;
/* frame height in pixels */
unsigned int frame_height;
/* horizontal scale */
unsigned int frame_width_scale;
/* vertical scale */
unsigned int frame_height_scale;
/* whether to enable error resilience features */
unsigned int error_resilient;
/* auto keyframe placement, non-zero means enable auto keyframe placement */
unsigned int kf_auto;
/* keyframe minimum interval */
unsigned int kf_min_dist;
/* keyframe maximum interval */
unsigned int kf_max_dist;
/* RC related fields. RC modes are set with VAConfigAttribRateControl */
/* For VP8, CBR implies HRD conformance and VBR implies no HRD conformance */
/**
* Initial bitrate set for this sequence in CBR or VBR modes.
*
* This field represents the initial bitrate value for this
* sequence if CBR or VBR mode is used, i.e. if the encoder
* pipeline was created with a #VAConfigAttribRateControl
* attribute set to either \ref VA_RC_CBR or \ref VA_RC_VBR.
*
* The bitrate can be modified later on through
* #VAEncMiscParameterRateControl buffers.
*/
unsigned int bits_per_second;
/* Period between I frames. */
unsigned int intra_period;
/* reference and reconstructed frame buffers
* Used for driver auto reference management when configured through
* VAConfigAttribEncAutoReference.
*/
VASurfaceID reference_frames[4];
} VAEncSequenceParameterBufferVP8;
/**
* \brief VP8 Encoding Picture Parameter Buffer Structure
*
* This structure conveys picture level parameters.
*
*/
typedef struct _VAEncPictureParameterBufferVP8
{
/* surface to store reconstructed frame */
VASurfaceID reconstructed_frame;
/*
* surfaces to store reference frames in non auto reference mode
* VA_INVALID_SURFACE can be used to denote an invalid reference frame.
*/
VASurfaceID ref_last_frame;
VASurfaceID ref_gf_frame;
VASurfaceID ref_arf_frame;
/* buffer to store coded data */
VABufferID coded_buf;
union {
struct {
/* force this frame to be a keyframe */
unsigned int force_kf : 1;
/* don't reference the last frame */
unsigned int no_ref_last : 1;
/* don't reference the golden frame */
unsigned int no_ref_gf : 1;
/* don't reference the alternate reference frame */
unsigned int no_ref_arf : 1;
unsigned int reserved : 28;
} bits;
unsigned int value;
} ref_flags;
union {
struct {
/* version */
unsigned int frame_type : 1;
unsigned int version : 3;
/* show_frame */
unsigned int show_frame : 1;
/* color_space */
unsigned int color_space : 1;
/* 0: bicubic, 1: bilinear, other: none */
unsigned int recon_filter_type : 2;
/* 0: no loop fitler, 1: simple loop filter */
unsigned int loop_filter_type : 2;
/* 0: disabled, 1: normal, 2: simple */
unsigned int auto_partitions : 1;
/* number of token partitions */
unsigned int num_token_partitions : 2;
/**
* The following fields correspond to the same VP8 syntax elements
* in the frame header.
*/
/**
* 0: clamping of reconstruction pixels is disabled,
* 1: clamping enabled.
*/
unsigned int clamping_type : 1;
/* indicate segmentation is enabled for the current frame. */
unsigned int segmentation_enabled : 1;
/**
* Determines if the MB segmentation map is updated in the current
* frame.
*/
unsigned int update_mb_segmentation_map : 1;
/**
* Indicates if the segment feature data is updated in the current
* frame.
*/
unsigned int update_segment_feature_data : 1;
/**
* indicates if the MB level loop filter adjustment is enabled for
* the current frame (0 off, 1 on).
*/
unsigned int loop_filter_adj_enable : 1;
/**
* Determines whether updated token probabilities are used only for
* this frame or until further update.
* It may be used by application to enable error resilient mode.
* In this mode probability updates are allowed only at Key Frames.
*/
unsigned int refresh_entropy_probs : 1;
/**
* Determines if the current decoded frame refreshes the golden frame.
*/
unsigned int refresh_golden_frame : 1;
/**
* Determines if the current decoded frame refreshes the alternate
* reference frame.
*/
unsigned int refresh_alternate_frame : 1;
/**
* Determines if the current decoded frame refreshes the last frame
* reference buffer.
*/
unsigned int refresh_last : 1;
/**
* Determines if the golden reference is replaced by another reference.
*/
unsigned int copy_buffer_to_golden : 2;
/**
* Determines if the alternate reference is replaced by another reference.
*/
unsigned int copy_buffer_to_alternate : 2;
/**
* Controls the sign of motion vectors when the golden frame is referenced.
*/
unsigned int sign_bias_golden : 1;
/**
* Controls the sign of motion vectors when the alternate frame is
* referenced.
*/
unsigned int sign_bias_alternate : 1;
/**
* Enables or disables the skipping of macroblocks containing no
* non-zero coefficients.
*/
unsigned int mb_no_coeff_skip : 1;
/**
* Enforces unconditional per-MB loop filter delta update setting frame
* header flags mode_ref_lf_delta_update, all mb_mode_delta_update_flag[4],
* and all ref_frame_delta_update_flag[4] to 1.
* Since loop filter deltas are not automatically refreshed to default
* values at key frames, dropped frame with delta update may prevent
* correct decoding from the next key frame.
* Encoder application is advised to set this flag to 1 at key frames.
*/
unsigned int forced_lf_adjustment : 1;
unsigned int reserved : 2;
} bits;
unsigned int value;
} pic_flags;
/**
* Contains a list of 4 loop filter level values (updated value if applicable)
* controlling the deblocking filter strength. Each entry represents a segment.
* When segmentation is disabled, use entry 0.
* When loop_filter_level is 0, loop filter shall be disabled.
*/
char loop_filter_level[4];
/**
* Contains a list of 4 delta values for reference frame based MB-level
* loop filter adjustment.
* If no update, then set to 0.
*/
char ref_lf_delta[4];
/**
* Contains a list of 4 delta values for coding mode based MB-level loop
* filter adjustment.
* If no update, then set to 0.
*/
char mode_lf_delta[4];
/**
* Controls the deblocking filter sensitivity.
* Corresponds to the same VP8 syntax element in frame header.
*/
unsigned char sharpness_level;
/**
* Application supplied maximum clamp value for Qindex used in quantization.
* Qindex will not be allowed to exceed this value.
* It has a valid range [0..127] inclusive.
*/
unsigned char clamp_qindex_high;
/**
* Application supplied minimum clamp value for Qindex used in quantization.
* Qindex will not be allowed to be lower than this value.
* It has a valid range [0..127] inclusive.
* Condition clamp_qindex_low <= clamp_qindex_high must be guaranteed,
* otherwise they are ignored.
*/
unsigned char clamp_qindex_low;
} VAEncPictureParameterBufferVP8;
/**
* \brief VP8 MB Segmentation ID Buffer
*
* application provides buffer containing the initial segmentation id for each
* MB, in raster scan order. Rate control may reassign it.
* For an 640x480 video, the buffer has 1200 entries.
* the value of each entry should be in the range [0..3], inclusive.
* If segmentation is not enabled, application does not need to provide it.
*/
typedef struct _VAEncMBMapBufferVP8
{
/**
* number of MBs in the frame.
* It is also the number of entries of mb_segment_id[];
*/
unsigned int num_mbs;
/**
* per MB Segmentation ID Buffer
*/
unsigned char *mb_segment_id;
} VAEncMBMapBufferVP8;
/**
* \brief VP8 Quantization Matrix Buffer Structure
*
* Contains quantization index for yac(0-3) for each segment and quantization
* index deltas, ydc(0), y2dc(1), y2ac(2), uvdc(3), uvac(4) that are applied
* to all segments. When segmentation is disabled, only quantization_index[0]
* will be used. This structure is sent once per frame.
*/
typedef struct _VAQMatrixBufferVP8
{
unsigned short quantization_index[4];
short quantization_index_delta[5];
} VAQMatrixBufferVP8;
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* VA_ENC_VP8_H */