#include <float.h>
#include <stdlib.h>
#include <xeve.h>
#include "libavutil/internal.h"
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixfmt.h"
#include "libavutil/time.h"
#include "libavutil/cpu.h"
#include "libavutil/avstring.h"
#include "avcodec.h"
#include "internal.h"
#include "packet_internal.h"
#include "codec_internal.h"
#include "profiles.h"
#include "encode.h"

Data Structures
struct	XeveContext
	The structure stores all the states associated with the instance of Xeve MPEG-5 EVC encoder. More...

Macros
#define	MAX_BS_BUF (1610241024)

#define	XEVE_PARAM_BAD_NAME -100
	Error codes. More...

#define	XEVE_PARAM_BAD_VALUE -200

#define	OFFSET(x) offsetof(XeveContext, x)

#define	VE AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	State { STATE_ENCODING, STATE_BUMPING }
	Encoder states. More...

Functions
static int	libxeve_color_fmt (enum AVPixelFormat av_pix_fmt, int *xeve_col_fmt)
	Convert FFmpeg pixel format (AVPixelFormat) to XEVE pre-defined color format. More...

static int	libxeve_color_space (enum AVPixelFormat av_pix_fmt)
	Convert FFmpeg pixel format (AVPixelFormat) into XEVE pre-defined color space. More...

static int	get_conf (AVCodecContext avctx, XEVE_CDSC cdsc)
	The function returns a pointer to the object of the XEVE_CDSC type. More...

static int	set_extra_config (AVCodecContext avctx, XEVE id, XeveContext ctx)
	Set XEVE_CFG_SET_USE_PIC_SIGNATURE for encoder. More...

static int	setup_bumping (XEVE id)
	Switch encoder to bumping mode. More...

static av_cold int	libxeve_init (AVCodecContext *avctx)
	Initialize eXtra-fast Essential Video Encoder codec Create an encoder instance and allocate all the needed resources. More...

static int	libxeve_encode (AVCodecContext avctx, AVPacket avpkt, const AVFrame frame, int got_packet)
	Encode raw data frame into EVC packet. More...

static av_cold int	libxeve_close (AVCodecContext *avctx)
	Destroy the encoder and release all the allocated resources. More...

Variables
static enum AVPixelFormat	supported_pixel_formats []

static const AVOption	libxeve_options []

static const AVClass	libxeve_class

static const FFCodecDefault	libxeve_defaults []
	libavcodec generic global options, which can be set on all the encoders and decoders More...

const FFCodec	ff_libxeve_encoder

Macro Definition Documentation

◆ MAX_BS_BUF

#define MAX_BS_BUF (16*1024*1024)

Definition at line 46 of file libxeve.c.

◆ XEVE_PARAM_BAD_NAME

#define XEVE_PARAM_BAD_NAME -100

Error codes.

Definition at line 51 of file libxeve.c.

◆ XEVE_PARAM_BAD_VALUE

#define XEVE_PARAM_BAD_VALUE -200

Definition at line 52 of file libxeve.c.

◆ OFFSET

#define OFFSET ( x ) offsetof(XeveContext, x)

Definition at line 545 of file libxeve.c.

◆ VE

#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 546 of file libxeve.c.

Enumeration Type Documentation

◆ State

enum State

Encoder states.

STATE_ENCODING - the encoder receives and processes input frames STATE_BUMPING - there are no more input frames, however the encoder still processes previously received data

Enumerator
STATE_ENCODING
STATE_BUMPING

Definition at line 60 of file libxeve.c.

Function Documentation

◆ libxeve_color_fmt()

static int libxeve_color_fmt	(	enum AVPixelFormat	av_pix_fmt,
		int *	xeve_col_fmt
	)

static

Convert FFmpeg pixel format (AVPixelFormat) to XEVE pre-defined color format.

Parameters

[in] av_pix_fmt pixel format (

See also: https://ffmpeg.org/doxygen/trunk/pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5)

Parameters

[out] xeve_col_fmt XEVE pre-defined color format (

See also: xeve.h)

Returns: 0 on success, negative value on failure

Definition at line 104 of file libxeve.c.

Referenced by get_conf().

◆ libxeve_color_space()

static int libxeve_color_space ( enum AVPixelFormat av_pix_fmt )

static

Convert FFmpeg pixel format (AVPixelFormat) into XEVE pre-defined color space.

Parameters

[in] px_fmt pixel format (

See also: https://ffmpeg.org/doxygen/trunk/pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5)

Returns: XEVE pre-defined color space (

See also: xeve.h) on success, XEVE_CF_UNKNOWN on failure

Definition at line 128 of file libxeve.c.

Referenced by libxeve_init().

◆ get_conf()

static int get_conf	(	AVCodecContext *	avctx,
		XEVE_CDSC *	cdsc
	)

static

The function returns a pointer to the object of the XEVE_CDSC type.

XEVE_CDSC contains all encoder parameters that should be initialized before the encoder is used.

The field values of the XEVE_CDSC structure are populated based on:

the corresponding field values of the AvCodecConetxt structure,
the xeve encoder specific option values, (the full list of options available for xeve encoder is displayed after executing the command ./ffmpeg –help encoder = libxeve)

The order of processing input data and populating the XEVE_CDSC structure 1) first, the fields of the AVCodecContext structure corresponding to the provided input options are processed, (i.e -pix_fmt yuv420p -s:v 1920x1080 -r 30 -profile:v 0) 2) then xeve-specific options added as AVOption to the xeve AVCodec implementation (i.e -preset 0)

Keep in mind that, there are options that can be set in different ways. In this case, please follow the above-mentioned order of processing. The most recent assignments overwrite the previous values.

Parameters

[in]	avctx	codec context (AVCodecContext)
[out]	cdsc	contains all Xeve MPEG-5 EVC encoder encoder parameters that should be initialized before the encoder is use

Returns: 0 on success, negative error code on failure

Definition at line 177 of file libxeve.c.

Referenced by libxeve_init().

◆ set_extra_config()

static int set_extra_config	(	AVCodecContext *	avctx,
		XEVE	id,
		XeveContext *	ctx
	)

static

Set XEVE_CFG_SET_USE_PIC_SIGNATURE for encoder.

Parameters

[in]	logger	context
[in]	id	XEVE encodec instance identifier
[in]	ctx	the structure stores all the states associated with the instance of Xeve MPEG-5 EVC encoder

Returns: 0 on success, negative error code on failure

Definition at line 270 of file libxeve.c.

Referenced by libxeve_init().

◆ setup_bumping()

static int setup_bumping ( XEVE id )

static

Switch encoder to bumping mode.

Parameters

id	XEVE encodec instance identifier

Returns: 0 on success, negative error code on failure

Definition at line 306 of file libxeve.c.

Referenced by libxeve_encode().

◆ libxeve_init()

static av_cold int libxeve_init ( AVCodecContext * avctx )

static

Initialize eXtra-fast Essential Video Encoder codec Create an encoder instance and allocate all the needed resources.

Parameters

avctx codec context

Returns: 0 on success, negative error code on failure

Definition at line 323 of file libxeve.c.

◆ libxeve_encode()

static int libxeve_encode	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		const AVFrame *	frame,
		int *	got_packet
	)

static

Encode raw data frame into EVC packet.

Parameters

[in]	avctx	codec context
[out]	avpkt	output AVPacket containing encoded data
[in]	frame	AVFrame containing the raw data to be encoded
[out]	got_packet	encoder sets to 0 or 1 to indicate that a non-empty packet was returned in pkt

Returns: 0 on success, negative error code on failure

Definition at line 424 of file libxeve.c.

◆ libxeve_close()

static av_cold int libxeve_close ( AVCodecContext * avctx )

static

Destroy the encoder and release all the allocated resources.

Parameters

avctx codec context

Returns: 0 on success, negative error code on failure

Definition at line 531 of file libxeve.c.

Variable Documentation

◆ supported_pixel_formats

enum AVPixelFormat supported_pixel_formats[]

static

Initial value:

= {
    AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_YUV420P10,
    AV_PIX_FMT_NONE
}

Definition at line 548 of file libxeve.c.

◆ libxeve_options

const AVOption libxeve_options[]

static

Initial value:

= {
    { "preset", "Encoding preset for setting encoding speed", OFFSET(preset_id), AV_OPT_TYPE_INT, { .i64 = XEVE_PRESET_MEDIUM }, XEVE_PRESET_DEFAULT,  XEVE_PRESET_PLACEBO, VE, .unit = "preset" },
    { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_DEFAULT }, INT_MIN, INT_MAX, VE, .unit = "preset" },
    { "fast",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_FAST },    INT_MIN, INT_MAX, VE, .unit = "preset" },
    { "medium",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_MEDIUM },  INT_MIN, INT_MAX, VE, .unit = "preset" },
    { "slow",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_SLOW },    INT_MIN, INT_MAX, VE, .unit = "preset" },
    { "placebo", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_PLACEBO }, INT_MIN, INT_MAX, VE, .unit = "preset" },
    { "tune", "Tuning parameter for special purpose operation", OFFSET(tune_id), AV_OPT_TYPE_INT, { .i64 = XEVE_TUNE_NONE }, XEVE_TUNE_NONE, XEVE_TUNE_PSNR, VE, .unit = "tune"},
    { "none",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_TUNE_NONE },        INT_MIN, INT_MAX, VE, .unit = "tune" },
    { "zerolatency", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_TUNE_ZEROLATENCY }, INT_MIN, INT_MAX, VE, .unit = "tune" },
    { "psnr",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_TUNE_PSNR },        INT_MIN, INT_MAX, VE, .unit = "tune" },
    { "profile", "Encoding profile", OFFSET(profile_id), AV_OPT_TYPE_INT, { .i64 = XEVE_PROFILE_BASELINE }, XEVE_PROFILE_BASELINE,  XEVE_PROFILE_MAIN, VE, .unit = "profile" },
    { "baseline", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PROFILE_BASELINE }, INT_MIN, INT_MAX, VE, .unit = "profile" },
    { "main",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PROFILE_MAIN },     INT_MIN, INT_MAX, VE, .unit = "profile" },
    { "rc_mode", "Rate control mode", OFFSET(rc_mode), AV_OPT_TYPE_INT, { .i64 = XEVE_RC_CQP }, XEVE_RC_CQP,  XEVE_RC_CRF, VE, .unit = "rc_mode" },
    { "CQP", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_RC_CQP }, INT_MIN, INT_MAX, VE, .unit = "rc_mode" },
    { "ABR", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_RC_ABR }, INT_MIN, INT_MAX, VE, .unit = "rc_mode" },
    { "CRF", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_RC_CRF }, INT_MIN, INT_MAX, VE, .unit = "rc_mode" },
    { "qp", "Quantization parameter value for CQP rate control mode", OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 32 }, 0, 51, VE },
    { "crf", "Constant rate factor value for CRF rate control mode", OFFSET(crf), AV_OPT_TYPE_INT, { .i64 = 32 }, 10, 49, VE },
    { "hash", "Embed picture signature (HASH) for conformance checking in decoding", OFFSET(hash), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
    { "sei_info", "Embed SEI messages identifying encoder parameters and command line arguments", OFFSET(sei_info), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
    { "xeve-params",  "Override the xeve configuration using a :-separated list of key=value parameters", OFFSET(xeve_params), AV_OPT_TYPE_DICT, { 0 }, 0, 0, VE },
    { NULL }
}

Definition at line 556 of file libxeve.c.

◆ libxeve_class

const AVClass libxeve_class

static

Initial value:

= {
    .class_name = "libxeve",
    .item_name  = av_default_item_name,
    .option     = libxeve_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 582 of file libxeve.c.

◆ libxeve_defaults

const FFCodecDefault libxeve_defaults[]

static

Initial value:

= {
    { "b", "0" },       
    { "g", "0" },       
    { "bf", "15"},      
    { "threads", "0"},  
    { NULL },
}

libavcodec generic global options, which can be set on all the encoders and decoders

See also: https://www.ffmpeg.org/ffmpeg-codecs.html#Codec-Options

Definition at line 593 of file libxeve.c.

◆ ff_libxeve_encoder

const FFCodec ff_libxeve_encoder

Initial value:

= {
    .p.name             = "libxeve",
    .p.long_name        = NULL_IF_CONFIG_SMALL("libxeve MPEG-5 EVC"),
    .p.type             = AVMEDIA_TYPE_VIDEO,
    .p.id               = AV_CODEC_ID_EVC,
    .init               = libxeve_init,
    FF_CODEC_ENCODE_CB(libxeve_encode),
    .close              = libxeve_close,
    .priv_data_size     = sizeof(XeveContext),
    .p.priv_class       = &libxeve_class,
    .defaults           = libxeve_defaults,
    .p.capabilities     = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_OTHER_THREADS | AV_CODEC_CAP_DR1,
    .p.profiles         = NULL_IF_CONFIG_SMALL(ff_evc_profiles),
    .p.wrapper_name     = "libxeve",
    .p.pix_fmts         = supported_pixel_formats,
    .caps_internal      = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_NOT_INIT_THREADSAFE,
}

Definition at line 601 of file libxeve.c.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ MAX_BS_BUF

◆ XEVE_PARAM_BAD_NAME

◆ XEVE_PARAM_BAD_VALUE

◆ OFFSET

◆ VE

Enumeration Type Documentation

◆ State

Function Documentation

◆ libxeve_color_fmt()

◆ libxeve_color_space()

◆ get_conf()

◆ set_extra_config()

◆ setup_bumping()

◆ libxeve_init()

◆ libxeve_encode()

◆ libxeve_close()

Variable Documentation

◆ supported_pixel_formats

◆ libxeve_options

◆ libxeve_class

◆ libxeve_defaults

◆ ff_libxeve_encoder