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317 lines
11 KiB
317 lines
11 KiB
/* |
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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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/* The temporal id the frame belongs to. */ |
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unsigned int temporal_id : 8; |
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unsigned int reserved : 20; |
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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 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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* \brief VP8 MB Segmentation ID Buffer |
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* |
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* The application provides a buffer of VAEncMacroblockMapBufferType containing |
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* the initial segmentation id for each MB, one byte each, in raster scan order. |
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* Rate control may reassign it. For example, a 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, the application does not need to provide it. |
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*/ |
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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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