/*
* 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>
#if VA_CHECK_VERSION(1, 0, 0)
#include <va/va_str.h>
#endif
#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_DPB_SIZE = 16,
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;
int row_start;
int row_size;
int block_start;
int block_size;
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 force_idr;
int type;
int b_depth;
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;
// Whether this picture is a reference picture.
int is_reference;
// The contents of the DPB after this picture has been decoded.
// This will contain the picture itself if it is a reference picture,
// but not if it isn't.
int nb_dpb_pics;
struct VAAPIEncodePicture *dpb[MAX_DPB_SIZE];
// The reference pictures used in decoding this picture. If they are
// used by later pictures they will also appear in the DPB.
int nb_refs;
struct VAAPIEncodePicture *refs[MAX_PICTURE_REFERENCES];
// The previous reference picture in encode order. Must be in at least
// one of the reference list and DPB list.
struct VAAPIEncodePicture *prev;
// Reference count for other pictures referring to this one through
// the above pointers, directly from incomplete pictures and indirectly
// through completed pictures.
int ref_count[2];
int ref_removed[2];
int nb_slices;
VAAPIEncodeSlice *slices;
} VAAPIEncodePicture;
typedef struct VAAPIEncodeProfile {
// lavc profile value (FF_PROFILE_*).
int av_profile;
// Supported bit depth.
int depth;
// Number of components.
int nb_components;
// Chroma subsampling in width dimension.
int log2_chroma_w;
// Chroma subsampling in height dimension.
int log2_chroma_h;
// VAAPI profile value.
VAProfile va_profile;
} VAAPIEncodeProfile;
enum {
RC_MODE_AUTO,
RC_MODE_CQP,
RC_MODE_CBR,
RC_MODE_VBR,
RC_MODE_ICQ,
RC_MODE_QVBR,
RC_MODE_AVBR,
RC_MODE_MAX = RC_MODE_AVBR,
};
typedef struct VAAPIEncodeRCMode {
// Mode from above enum (RC_MODE_*).
int mode;
// Name.
const char *name;
// Supported in the compile-time VAAPI version.
int supported;
// VA mode value (VA_RC_*).
uint32_t va_mode;
// Uses bitrate parameters.
int bitrate;
// Supports maxrate distinct from bitrate.
int maxrate;
// Uses quality value.
int quality;
// Supports HRD/VBV parameters.
int hrd;
} VAAPIEncodeRCMode;
typedef struct VAAPIEncodeContext {
const AVClass *class;
// Codec-specific hooks.
const struct VAAPIEncodeType *codec;
// Global options.
// Use low power encoding mode.
int low_power;
// Number of I frames between IDR frames.
int idr_interval;
// Desired B frame reference depth.
int desired_b_depth;
// Explicitly set RC mode (otherwise attempt to pick from
// available modes).
int explicit_rc_mode;
// Explicitly-set QP, for use with the "qp" options.
// (Forces CQP mode when set, overriding everything else.)
int explicit_qp;
// Desired packed headers.
unsigned int desired_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;
// The block size for slice calculations.
int slice_block_width;
int slice_block_height;
// Everything above this point must be set before calling
// ff_vaapi_encode_init().
// Chosen encoding profile details.
const VAAPIEncodeProfile *profile;
// Chosen rate control mode details.
const VAAPIEncodeRCMode *rc_mode;
// RC quality level - meaning depends on codec and RC mode.
// In CQP mode this sets the fixed quantiser value.
int rc_quality;
// Encoding profile (VAProfile*).
VAProfile va_profile;
// Encoding entrypoint (VAEntryoint*).
VAEntrypoint va_entrypoint;
// Rate control mode.
unsigned int va_rc_mode;
// Bitrate for codec-specific encoder parameters.
unsigned int va_bit_rate;
// Packed headers which will actually be sent.
unsigned int va_packed_headers;
// 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).
int global_params_type[MAX_GLOBAL_PARAMS];
const void *global_params [MAX_GLOBAL_PARAMS];
size_t global_params_size[MAX_GLOBAL_PARAMS];
int nb_global_params;
// Rate control parameters.
VAEncMiscParameterRateControl rc_params;
VAEncMiscParameterHRD hrd_params;
VAEncMiscParameterFrameRate fr_params;
#if VA_CHECK_VERSION(0, 36, 0)
VAEncMiscParameterBufferQualityLevel 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;
// The next picture to use as the previous reference picture in
// encoding order.
VAAPIEncodePicture *next_prev;
// Next input order index (display order).
int64_t input_order;
// Number of frames that output is behind input.
int64_t output_delay;
// Next encode order index.
int64_t encode_order;
// Number of frames decode output will need to be delayed.
int64_t decode_delay;
// Next output order index (in encode order).
int64_t output_order;
// Timestamp handling.
int64_t first_pts;
int64_t dts_pts_diff;
int64_t ts_ring[MAX_REORDER_DELAY * 3];
// Slice structure.
int slice_block_rows;
int slice_block_cols;
int nb_slices;
int slice_size;
// Frame type decision.
int gop_size;
int closed_gop;
int gop_per_idr;
int p_per_i;
int max_b_depth;
int b_per_p;
int force_idr;
int idr_counter;
int gop_counter;
int end_of_stream;
// The encoder does not support cropping information, so warn about
// it the first time we encounter any nonzero crop fields.
int crop_warned;
} VAAPIEncodeContext;
enum {
// Codec supports controlling the subdivision of pictures into slices.
FLAG_SLICE_CONTROL = 1 << 0,
// Codec only supports constant quality (no rate control).
FLAG_CONSTANT_QUALITY_ONLY = 1 << 1,
// Codec is intra-only.
FLAG_INTRA_ONLY = 1 << 2,
// Codec supports B-pictures.
FLAG_B_PICTURES = 1 << 3,
// Codec supports referencing B-pictures.
FLAG_B_PICTURE_REFERENCES = 1 << 4,
// Codec supports non-IDR key pictures (that is, key pictures do
// not necessarily empty the DPB).
FLAG_NON_IDR_KEY_PICTURES = 1 << 5,
};
typedef struct VAAPIEncodeType {
// List of supported profiles and corresponding VAAPI profiles.
// (Must end with FF_PROFILE_UNKNOWN.)
const VAAPIEncodeProfile *profiles;
// Codec feature flags.
int flags;
// Default quality for this codec - used as quantiser or RC quality
// factor depending on RC mode.
int default_quality;
// 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 any private data structure associated with each
// picture (can be zero if not required).
size_t picture_priv_data_size;
// 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_encode_send_frame(AVCodecContext *avctx, const AVFrame *frame);
int ff_vaapi_encode_receive_packet(AVCodecContext *avctx, AVPacket *pkt);
int ff_vaapi_encode_init(AVCodecContext *avctx);
int ff_vaapi_encode_close(AVCodecContext *avctx);
#define VAAPI_ENCODE_COMMON_OPTIONS \
{ "low_power", \
"Use low-power encoding mode (only available on some platforms; " \
"may not support all encoding features)", \
OFFSET(common.low_power), AV_OPT_TYPE_BOOL, \
{ .i64 = 0 }, 0, 1, FLAGS }, \
{ "idr_interval", \
"Distance (in I-frames) between IDR frames", \
OFFSET(common.idr_interval), AV_OPT_TYPE_INT, \
{ .i64 = 0 }, 0, INT_MAX, FLAGS }, \
{ "b_depth", \
"Maximum B-frame reference depth", \
OFFSET(common.desired_b_depth), AV_OPT_TYPE_INT, \
{ .i64 = 1 }, 1, INT_MAX, FLAGS }
#define VAAPI_ENCODE_RC_MODE(name, desc) \
{ #name, desc, 0, AV_OPT_TYPE_CONST, { .i64 = RC_MODE_ ## name }, \
0, 0, FLAGS, "rc_mode" }
#define VAAPI_ENCODE_RC_OPTIONS \
{ "rc_mode",\
"Set rate control mode", \
OFFSET(common.explicit_rc_mode), AV_OPT_TYPE_INT, \
{ .i64 = RC_MODE_AUTO }, RC_MODE_AUTO, RC_MODE_MAX, FLAGS, "rc_mode" }, \
{ "auto", "Choose mode automatically based on other parameters", \
0, AV_OPT_TYPE_CONST, { .i64 = RC_MODE_AUTO }, 0, 0, FLAGS, "rc_mode" }, \
VAAPI_ENCODE_RC_MODE(CQP, "Constant-quality"), \
VAAPI_ENCODE_RC_MODE(CBR, "Constant-bitrate"), \
VAAPI_ENCODE_RC_MODE(VBR, "Variable-bitrate"), \
VAAPI_ENCODE_RC_MODE(ICQ, "Intelligent constant-quality"), \
VAAPI_ENCODE_RC_MODE(QVBR, "Quality-defined variable-bitrate"), \
VAAPI_ENCODE_RC_MODE(AVBR, "Average variable-bitrate")
#endif /* AVCODEC_VAAPI_ENCODE_H */