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