/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VAAPI_ENCODE_H
#define AVCODEC_VAAPI_ENCODE_H
#include <stdint.h>
#include <va/va.h>
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_vaapi.h"
#include "avcodec.h"
struct VAAPIEncodeType;
struct VAAPIEncodePicture;
enum {
MAX_CONFIG_ATTRIBUTES = 4,
MAX_GLOBAL_PARAMS = 4,
MAX_PICTURE_REFERENCES = 2,
MAX_REORDER_DELAY = 16,
MAX_PARAM_BUFFER_SIZE = 1024,
};
enum {
PICTURE_TYPE_IDR = 0,
PICTURE_TYPE_I = 1,
PICTURE_TYPE_P = 2,
PICTURE_TYPE_B = 3,
};
typedef struct VAAPIEncodeSlice {
int index;
void *priv_data;
void *codec_slice_params;
} VAAPIEncodeSlice;
typedef struct VAAPIEncodePicture {
struct VAAPIEncodePicture *next;
int64_t display_order;
int64_t encode_order;
int64_t pts;
int type;
int input_available;
int encode_issued;
int encode_complete;
AVFrame *input_image;
VASurfaceID input_surface;
AVFrame *recon_image;
VASurfaceID recon_surface;
int nb_param_buffers;
VABufferID *param_buffers;
AVBufferRef *output_buffer_ref;
VABufferID output_buffer;
void *priv_data;
void *codec_picture_params;
int nb_refs;
struct VAAPIEncodePicture *refs[MAX_PICTURE_REFERENCES];
int nb_slices;
VAAPIEncodeSlice *slices;
} VAAPIEncodePicture;
typedef struct VAAPIEncodeContext {
const AVClass *class;
// Codec-specific hooks.
const struct VAAPIEncodeType *codec;
// Encoding profile (VAProfileXXX).
VAProfile va_profile;
// Encoding entrypoint (usually VAEntryointEncSlice).
VAEntrypoint va_entrypoint;
// Surface colour/sampling format (usually VA_RT_FORMAT_YUV420).
unsigned int va_rt_format;
// Rate control mode.
unsigned int va_rc_mode;
// Supported packed headers (initially the desired set, modified
// later to what is actually supported).
unsigned int va_packed_headers;
// The required size of surfaces. This is probably the input
// size (AVCodecContext.width|height) aligned up to whatever
// block size is required by the codec.
int surface_width;
int surface_height;
// Everything above this point must be set before calling
// ff_vaapi_encode_init().
// Codec-specific state.
void *priv_data;
// Configuration attributes to use when creating va_config.
VAConfigAttrib config_attributes[MAX_CONFIG_ATTRIBUTES];
int nb_config_attributes;
VAConfigID va_config;
VAContextID va_context;
AVBufferRef *device_ref;
AVHWDeviceContext *device;
AVVAAPIDeviceContext *hwctx;
// The hardware frame context containing the input frames.
AVBufferRef *input_frames_ref;
AVHWFramesContext *input_frames;
// The hardware frame context containing the reconstructed frames.
AVBufferRef *recon_frames_ref;
AVHWFramesContext *recon_frames;
// Pool of (reusable) bitstream output buffers.
AVBufferPool *output_buffer_pool;
// Global parameters which will be applied at the start of the
// sequence (includes rate control parameters below).
VAEncMiscParameterBuffer *global_params[MAX_GLOBAL_PARAMS];
size_t global_params_size[MAX_GLOBAL_PARAMS];
int nb_global_params;
// Rate control parameters.
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterRateControl rc;
} rc_params;
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterHRD hrd;
} hrd_params;
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterFrameRate fr;
} fr_params;
#if VA_CHECK_VERSION(0, 36, 0)
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterBufferQualityLevel quality;
} quality_params;
#endif
// Per-sequence parameter structure (VAEncSequenceParameterBuffer*).
void *codec_sequence_params;
// Per-sequence parameters found in the per-picture parameter
// structure (VAEncPictureParameterBuffer*).
void *codec_picture_params;
// Current encoding window, in display (input) order.
VAAPIEncodePicture *pic_start, *pic_end;
// Next input order index (display order).
int64_t input_order;
// Number of frames that output is behind input.
int64_t output_delay;
// Number of frames decode output will need to be delayed.
int64_t decode_delay;
// Next output order index (encode order).
int64_t output_order;
enum {
// All encode operations are done independently (synchronise
// immediately after every operation).
ISSUE_MODE_SERIALISE_EVERYTHING = 0,
// Overlap as many operations as possible.
ISSUE_MODE_MAXIMISE_THROUGHPUT,
// Overlap operations only when satisfying parallel dependencies.
ISSUE_MODE_MINIMISE_LATENCY,
} issue_mode;
// Timestamp handling.
int64_t first_pts;
int64_t dts_pts_diff;
int64_t ts_ring[MAX_REORDER_DELAY * 3];
// Frame type decision.
int p_per_i;
int b_per_p;
int force_idr;
int gop_counter;
int p_counter;
int end_of_stream;
// Codec-local options are allocated to follow this structure in
// memory (in the AVCodec definition, set priv_data_size to
// sizeof(VAAPIEncodeContext) + sizeof(VAAPIEncodeFooOptions)).
void *codec_options;
char codec_options_data[0];
} VAAPIEncodeContext;
typedef struct VAAPIEncodeType {
size_t priv_data_size;
// Perform any extra codec-specific configuration after the
// codec context is initialised (set up the private data and
// add any necessary global parameters).
int (*configure)(AVCodecContext *avctx);
// The size of the parameter structures:
// sizeof(VAEnc{type}ParameterBuffer{codec}).
size_t sequence_params_size;
size_t picture_params_size;
size_t slice_params_size;
// Fill the parameter structures.
int (*init_sequence_params)(AVCodecContext *avctx);
int (*init_picture_params)(AVCodecContext *avctx,
VAAPIEncodePicture *pic);
int (*init_slice_params)(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice);
// The type used by the packed header: this should look like
// VAEncPackedHeader{something}.
int sequence_header_type;
int picture_header_type;
int slice_header_type;
// Write the packed header data to the provided buffer.
// The sequence header is also used to fill the codec extradata
// when the encoder is starting.
int (*write_sequence_header)(AVCodecContext *avctx,
char *data, size_t *data_len);
int (*write_picture_header)(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
char *data, size_t *data_len);
int (*write_slice_header)(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice,
char *data, size_t *data_len);
// Fill an extra parameter structure, which will then be
// passed to vaRenderPicture(). Will be called repeatedly
// with increasing index argument until AVERROR_EOF is
// returned.
int (*write_extra_buffer)(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
int index, int *type,
char *data, size_t *data_len);
// Write an extra packed header. Will be called repeatedly
// with increasing index argument until AVERROR_EOF is
// returned.
int (*write_extra_header)(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
int index, int *type,
char *data, size_t *data_len);
} VAAPIEncodeType;
int ff_vaapi_encode2(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *input_image, int *got_packet);
int ff_vaapi_encode_init(AVCodecContext *avctx);
int ff_vaapi_encode_close(AVCodecContext *avctx);
#endif /* AVCODEC_VAAPI_ENCODE_H */