339 lines
10 KiB
C
339 lines
10 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_VAAPI_ENCODE_H
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#define AVCODEC_VAAPI_ENCODE_H
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#include <stdint.h>
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#include <va/va.h>
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#if VA_CHECK_VERSION(1, 0, 0)
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#include <va/va_str.h>
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#endif
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_vaapi.h"
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#include "avcodec.h"
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struct VAAPIEncodeType;
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struct VAAPIEncodePicture;
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enum {
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MAX_CONFIG_ATTRIBUTES = 4,
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MAX_GLOBAL_PARAMS = 4,
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MAX_PICTURE_REFERENCES = 2,
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MAX_REORDER_DELAY = 16,
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MAX_PARAM_BUFFER_SIZE = 1024,
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};
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enum {
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PICTURE_TYPE_IDR = 0,
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PICTURE_TYPE_I = 1,
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PICTURE_TYPE_P = 2,
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PICTURE_TYPE_B = 3,
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};
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typedef struct VAAPIEncodeSlice {
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int index;
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int row_start;
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int row_size;
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int block_start;
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int block_size;
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void *priv_data;
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void *codec_slice_params;
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} VAAPIEncodeSlice;
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typedef struct VAAPIEncodePicture {
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struct VAAPIEncodePicture *next;
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int64_t display_order;
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int64_t encode_order;
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int64_t pts;
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int type;
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int input_available;
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int encode_issued;
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int encode_complete;
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AVFrame *input_image;
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VASurfaceID input_surface;
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AVFrame *recon_image;
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VASurfaceID recon_surface;
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int nb_param_buffers;
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VABufferID *param_buffers;
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AVBufferRef *output_buffer_ref;
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VABufferID output_buffer;
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void *priv_data;
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void *codec_picture_params;
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int nb_refs;
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struct VAAPIEncodePicture *refs[MAX_PICTURE_REFERENCES];
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int nb_slices;
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VAAPIEncodeSlice *slices;
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} VAAPIEncodePicture;
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typedef struct VAAPIEncodeProfile {
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// lavc profile value (FF_PROFILE_*).
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int av_profile;
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// Supported bit depth.
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int depth;
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// Number of components.
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int nb_components;
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// Chroma subsampling in width dimension.
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int log2_chroma_w;
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// Chroma subsampling in height dimension.
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int log2_chroma_h;
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// VAAPI profile value.
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VAProfile va_profile;
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} VAAPIEncodeProfile;
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typedef struct VAAPIEncodeContext {
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const AVClass *class;
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// Codec-specific hooks.
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const struct VAAPIEncodeType *codec;
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// Global options.
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// Use low power encoding mode.
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int low_power;
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// Desired packed headers.
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unsigned int desired_packed_headers;
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// The required size of surfaces. This is probably the input
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// size (AVCodecContext.width|height) aligned up to whatever
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// block size is required by the codec.
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int surface_width;
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int surface_height;
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// The block size for slice calculations.
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int slice_block_width;
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int slice_block_height;
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// Everything above this point must be set before calling
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// ff_vaapi_encode_init().
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// Chosen encoding profile details.
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const VAAPIEncodeProfile *profile;
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// Encoding profile (VAProfile*).
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VAProfile va_profile;
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// Encoding entrypoint (VAEntryoint*).
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VAEntrypoint va_entrypoint;
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// Rate control mode.
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unsigned int va_rc_mode;
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// Bitrate for codec-specific encoder parameters.
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unsigned int va_bit_rate;
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// Packed headers which will actually be sent.
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unsigned int va_packed_headers;
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// Configuration attributes to use when creating va_config.
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VAConfigAttrib config_attributes[MAX_CONFIG_ATTRIBUTES];
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int nb_config_attributes;
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VAConfigID va_config;
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VAContextID va_context;
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AVBufferRef *device_ref;
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AVHWDeviceContext *device;
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AVVAAPIDeviceContext *hwctx;
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// The hardware frame context containing the input frames.
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AVBufferRef *input_frames_ref;
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AVHWFramesContext *input_frames;
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// The hardware frame context containing the reconstructed frames.
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AVBufferRef *recon_frames_ref;
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AVHWFramesContext *recon_frames;
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// Pool of (reusable) bitstream output buffers.
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AVBufferPool *output_buffer_pool;
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// Global parameters which will be applied at the start of the
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// sequence (includes rate control parameters below).
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VAEncMiscParameterBuffer *global_params[MAX_GLOBAL_PARAMS];
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size_t global_params_size[MAX_GLOBAL_PARAMS];
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int nb_global_params;
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// Rate control parameters.
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struct {
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VAEncMiscParameterBuffer misc;
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VAEncMiscParameterRateControl rc;
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} rc_params;
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struct {
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VAEncMiscParameterBuffer misc;
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VAEncMiscParameterHRD hrd;
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} hrd_params;
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struct {
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VAEncMiscParameterBuffer misc;
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VAEncMiscParameterFrameRate fr;
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} fr_params;
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#if VA_CHECK_VERSION(0, 36, 0)
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struct {
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VAEncMiscParameterBuffer misc;
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VAEncMiscParameterBufferQualityLevel quality;
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} quality_params;
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#endif
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// Per-sequence parameter structure (VAEncSequenceParameterBuffer*).
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void *codec_sequence_params;
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// Per-sequence parameters found in the per-picture parameter
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// structure (VAEncPictureParameterBuffer*).
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void *codec_picture_params;
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// Current encoding window, in display (input) order.
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VAAPIEncodePicture *pic_start, *pic_end;
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// Next input order index (display order).
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int64_t input_order;
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// Number of frames that output is behind input.
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int64_t output_delay;
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// Number of frames decode output will need to be delayed.
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int64_t decode_delay;
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// Next output order index (encode order).
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int64_t output_order;
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enum {
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// All encode operations are done independently (synchronise
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// immediately after every operation).
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ISSUE_MODE_SERIALISE_EVERYTHING = 0,
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// Overlap as many operations as possible.
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ISSUE_MODE_MAXIMISE_THROUGHPUT,
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// Overlap operations only when satisfying parallel dependencies.
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ISSUE_MODE_MINIMISE_LATENCY,
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} issue_mode;
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// Timestamp handling.
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int64_t first_pts;
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int64_t dts_pts_diff;
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int64_t ts_ring[MAX_REORDER_DELAY * 3];
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// Slice structure.
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int slice_block_rows;
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int slice_block_cols;
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int nb_slices;
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int slice_size;
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// Frame type decision.
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int gop_size;
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int p_per_i;
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int b_per_p;
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int force_idr;
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int gop_counter;
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int p_counter;
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int end_of_stream;
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} VAAPIEncodeContext;
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enum {
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// Codec supports controlling the subdivision of pictures into slices.
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FLAG_SLICE_CONTROL = 1 << 0,
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// Codec only supports constant quality (no rate control).
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FLAG_CONSTANT_QUALITY_ONLY = 1 << 1,
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};
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typedef struct VAAPIEncodeType {
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// List of supported profiles and corresponding VAAPI profiles.
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// (Must end with FF_PROFILE_UNKNOWN.)
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const VAAPIEncodeProfile *profiles;
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// Codec feature flags.
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int flags;
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// Perform any extra codec-specific configuration after the
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// codec context is initialised (set up the private data and
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// add any necessary global parameters).
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int (*configure)(AVCodecContext *avctx);
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// The size of the parameter structures:
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// sizeof(VAEnc{type}ParameterBuffer{codec}).
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size_t sequence_params_size;
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size_t picture_params_size;
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size_t slice_params_size;
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// Fill the parameter structures.
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int (*init_sequence_params)(AVCodecContext *avctx);
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int (*init_picture_params)(AVCodecContext *avctx,
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VAAPIEncodePicture *pic);
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int (*init_slice_params)(AVCodecContext *avctx,
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VAAPIEncodePicture *pic,
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VAAPIEncodeSlice *slice);
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// The type used by the packed header: this should look like
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// VAEncPackedHeader{something}.
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int sequence_header_type;
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int picture_header_type;
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int slice_header_type;
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// Write the packed header data to the provided buffer.
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// The sequence header is also used to fill the codec extradata
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// when the encoder is starting.
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int (*write_sequence_header)(AVCodecContext *avctx,
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char *data, size_t *data_len);
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int (*write_picture_header)(AVCodecContext *avctx,
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VAAPIEncodePicture *pic,
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char *data, size_t *data_len);
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int (*write_slice_header)(AVCodecContext *avctx,
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VAAPIEncodePicture *pic,
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VAAPIEncodeSlice *slice,
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char *data, size_t *data_len);
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// Fill an extra parameter structure, which will then be
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// passed to vaRenderPicture(). Will be called repeatedly
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// with increasing index argument until AVERROR_EOF is
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// returned.
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int (*write_extra_buffer)(AVCodecContext *avctx,
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VAAPIEncodePicture *pic,
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int index, int *type,
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char *data, size_t *data_len);
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// Write an extra packed header. Will be called repeatedly
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// with increasing index argument until AVERROR_EOF is
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// returned.
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int (*write_extra_header)(AVCodecContext *avctx,
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VAAPIEncodePicture *pic,
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int index, int *type,
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char *data, size_t *data_len);
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} VAAPIEncodeType;
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int ff_vaapi_encode2(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *input_image, int *got_packet);
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int ff_vaapi_encode_init(AVCodecContext *avctx);
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int ff_vaapi_encode_close(AVCodecContext *avctx);
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#define VAAPI_ENCODE_COMMON_OPTIONS \
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{ "low_power", \
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"Use low-power encoding mode (only available on some platforms; " \
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"may not support all encoding features)", \
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OFFSET(common.low_power), AV_OPT_TYPE_BOOL, \
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{ .i64 = 0 }, 0, 1, FLAGS }
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#endif /* AVCODEC_VAAPI_ENCODE_H */
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