VP8 encoder support via libvpx. More...

#include <vpx/vpx_encoder.h>
#include <vpx/vp8cx.h>
#include "avcodec.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libvpx.h"
#include "profiles.h"
#include "libavutil/base64.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"

Data Structures
struct	FrameListData
	Portion of struct vpx_codec_cx_pkt from vpx_encoder.h. More...

struct	VP8Context

Macros
#define	VPX_DISABLE_CTRL_TYPECHECKS 1

#define	VPX_CODEC_DISABLE_COMPAT 1

#define	VP8F_ERROR_RESILIENT 0x00000001
	Enable measures appropriate for streaming over lossy links. More...

#define	VP8F_AUTO_ALT_REF 0x00000002
	Enable automatic alternate reference frame generation. More...

#define	OFFSET(x) offsetof(VP8Context, x)

#define	VE AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_ENCODING_PARAM

#define	VPX_ERROR_RESILIENT_DEFAULT 1

#define	VPX_ERROR_RESILIENT_PARTITIONS 2

#define	COMMON_OPTIONS

#define	LEGACY_OPTIONS

Functions
static av_cold void	log_encoder_error (AVCodecContext avctx, const char desc)

static av_cold void	dump_enc_cfg (AVCodecContext avctx, const struct vpx_codec_enc_cfg cfg)

static void	coded_frame_add (void list, struct FrameListData cx_frame)

static av_cold void	free_coded_frame (struct FrameListData *cx_frame)

static av_cold void	free_frame_list (struct FrameListData *list)

static av_cold int	codecctl_int (AVCodecContext *avctx, enum vp8e_enc_control_id id, int val)

static av_cold int	vp8_free (AVCodecContext *avctx)

static av_cold int	vpx_init (AVCodecContext avctx, const struct vpx_codec_iface iface)

static void	cx_pktcpy (struct FrameListData dst, const struct vpx_codec_cx_pkt src, const struct vpx_codec_cx_pkt src_alpha, VP8Context ctx)

static int	storeframe (AVCodecContext avctx, struct FrameListData cx_frame, AVPacket *pkt)
	Store coded frame information in format suitable for return from encode2(). More...

static int	queue_frames (AVCodecContext avctx, AVPacket pkt_out)
	Queue multiple output frames from the encoder, returning the front-most. More...

static int	vp8_encode (AVCodecContext avctx, AVPacket pkt, const AVFrame frame, int got_packet)

Variables
static const char *const	ctlidstr []
	String mappings for enum vp8e_enc_control_id. More...

static const AVCodecDefault	defaults []

Detailed Description

VP8 encoder support via libvpx.

Definition in file libvpxenc.c.

Macro Definition Documentation

#define VPX_DISABLE_CTRL_TYPECHECKS 1

Definition at line 26 of file libvpxenc.c.

#define VPX_CODEC_DISABLE_COMPAT 1

Definition at line 27 of file libvpxenc.c.

#define VP8F_ERROR_RESILIENT 0x00000001

Enable measures appropriate for streaming over lossy links.

Definition at line 82 of file libvpxenc.c.

Referenced by vpx_init().

#define VP8F_AUTO_ALT_REF 0x00000002

Enable automatic alternate reference frame generation.

Definition at line 83 of file libvpxenc.c.

Referenced by vpx_init().

#define OFFSET ( x ) offsetof(VP8Context, x)

Definition at line 999 of file libvpxenc.c.

#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1000 of file libvpxenc.c.

#define VPX_ERROR_RESILIENT_DEFAULT 1

Definition at line 1003 of file libvpxenc.c.

#define VPX_ERROR_RESILIENT_PARTITIONS 2

Definition at line 1004 of file libvpxenc.c.

#define COMMON_OPTIONS

Value:

{ "auto-alt-ref",    "Enable use of alternate reference " \
                         "frames (2-pass only)",                   OFFSET(auto_alt_ref),    AV_OPT_TYPE_BOOL, {.i64 = -1},     -1,      1,       VE}, \
    { "lag-in-frames",   "Number of frames to look ahead for " \
                         "alternate reference frame selection",    OFFSET(lag_in_frames),   AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE}, \
    { "arnr-maxframes",  "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE}, \
    { "arnr-strength",   "altref noise reduction filter strength", OFFSET(arnr_strength),   AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE}, \
    { "arnr-type",       "altref noise reduction filter type",     OFFSET(arnr_type),       AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE, "arnr_type"}, \
    { "backward",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" }, \
    { "forward",         NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" }, \
    { "centered",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" }, \
    { "tune",            "Tune the encoding to a specific scenario", OFFSET(tune),          AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE, "tune"}, \
    { "psnr",            NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VP8_TUNE_PSNR}, 0, 0, VE, "tune"}, \
    { "ssim",            NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VP8_TUNE_SSIM}, 0, 0, VE, "tune"}, \
    { "deadline",        "Time to spend encoding, in microseconds.", OFFSET(deadline),      AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, \
    { "best",            NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"}, \
    { "good",            NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"}, \
    { "realtime",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME},     0, 0, VE, "quality"}, \
    { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"}, \
    { "max-intra-rate",  "Maximum I-frame bitrate (pct) 0=unlimited",  OFFSET(max_intra_rate),  AV_OPT_TYPE_INT,  {.i64 = -1}, -1,      INT_MAX, VE}, \
    { "default",         "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"}, \
    { "partitions",      "The frame partitions are independently decodable " \
                         "by the bool decoder, meaning that partitions can be decoded even " \
                         "though earlier partitions have been lost. Note that intra predicition" \
                         " is still done over the partition boundary.",       0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"}, \
    { "crf",              "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 63, VE }, \
    { "static-thresh",    "A change threshold on blocks below which they will be skipped by the encoder", OFFSET(static_thresh), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE }, \
    { "drop-threshold",   "Frame drop threshold", offsetof(VP8Context, drop_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, VE }, \
    { "noise-sensitivity", "Noise sensitivity", OFFSET(noise_sensitivity), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 4, VE}, \
    { "undershoot-pct",  "Datarate undershoot (min) target (%)", OFFSET(rc_undershoot_pct), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 100, VE }, \
    { "overshoot-pct",   "Datarate overshoot (max) target (%)", OFFSET(rc_overshoot_pct), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1000, VE }, \

Definition at line 1007 of file libvpxenc.c.

#define LEGACY_OPTIONS

Value:

{"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 1}, -16, 16, VE}, \
    {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, \
    {"vp8flags", "", offsetof(VP8Context, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"}, \
    {"error_resilient", "enable error resilience", 0, AV_OPT_TYPE_CONST, {.i64 = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"}, \
    {"altref", "enable use of alternate reference frames (VP8/2-pass only)", 0, AV_OPT_TYPE_CONST, {.i64 = VP8F_AUTO_ALT_REF}, INT_MIN, INT_MAX, VE, "flags"}, \
    {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE}, \
    {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE}, \
    {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE}, \
    {"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, lag_in_frames), AV_OPT_TYPE_INT, {.i64 = 25}, 0, 25, VE}, \

Definition at line 1039 of file libvpxenc.c.

Function Documentation

static av_cold void log_encoder_error	(	AVCodecContext *	avctx,
		const char *	desc
	)

static

Definition at line 139 of file libvpxenc.c.

Referenced by codecctl_int(), vp8_encode(), and vpx_init().

static av_cold void dump_enc_cfg	(	AVCodecContext *	avctx,
		const struct vpx_codec_enc_cfg *	cfg
	)

static

Definition at line 150 of file libvpxenc.c.

Referenced by vpx_init().

static void coded_frame_add	(	void *	list,
		struct FrameListData *	cx_frame
	)

static

Definition at line 212 of file libvpxenc.c.

Referenced by queue_frames().

static av_cold void free_coded_frame ( struct FrameListData * cx_frame )

static

Definition at line 222 of file libvpxenc.c.

Referenced by free_frame_list(), and queue_frames().

static av_cold void free_frame_list ( struct FrameListData * list )

static

Definition at line 230 of file libvpxenc.c.

Referenced by vp8_free().

static av_cold int codecctl_int	(	AVCodecContext *	avctx,
		enum vp8e_enc_control_id	id,
		int	val
	)

static

Definition at line 241 of file libvpxenc.c.

Referenced by vpx_init().

static av_cold int vp8_free ( AVCodecContext * avctx )

static

Definition at line 262 of file libvpxenc.c.

static av_cold int vpx_init	(	AVCodecContext *	avctx,
		const struct vpx_codec_iface *	iface
	)

static

Definition at line 399 of file libvpxenc.c.

static void cx_pktcpy	(	struct FrameListData *	dst,
		const struct vpx_codec_cx_pkt *	src,
		const struct vpx_codec_cx_pkt *	src_alpha,
		VP8Context *	ctx
	)

inlinestatic

Definition at line 695 of file libvpxenc.c.

Referenced by queue_frames().

static int storeframe	(	AVCodecContext *	avctx,
		struct FrameListData *	cx_frame,
		AVPacket *	pkt
	)

static

Store coded frame information in format suitable for return from encode2().

Write information from cx_frame to pkt

Returns: packet data size on success; a negative AVERROR on error

Definition at line 737 of file libvpxenc.c.

Referenced by queue_frames().

static int queue_frames	(	AVCodecContext *	avctx,
		AVPacket *	pkt_out
	)

static

Queue multiple output frames from the encoder, returning the front-most.

In cases where vpx_codec_get_cx_data() returns more than 1 frame append the frame queue. Return the head frame if available.

Returns: Stored frame size; AVERROR(EINVAL) on output size error; AVERROR(ENOMEM) on coded frame queue data allocation error

Definition at line 815 of file libvpxenc.c.

Referenced by vp8_encode().

static int vp8_encode	(	AVCodecContext *	avctx,
		AVPacket *	pkt,
		const AVFrame *	frame,
		int *	got_packet
	)

static

Definition at line 917 of file libvpxenc.c.

Variable Documentation

const char* const ctlidstr[]

static

Initial value:

= {
    [VP8E_SET_CPUUSED]           = "VP8E_SET_CPUUSED",
    [VP8E_SET_ENABLEAUTOALTREF]  = "VP8E_SET_ENABLEAUTOALTREF",
    [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
    [VP8E_SET_STATIC_THRESHOLD]  = "VP8E_SET_STATIC_THRESHOLD",
    [VP8E_SET_TOKEN_PARTITIONS]  = "VP8E_SET_TOKEN_PARTITIONS",
    [VP8E_SET_ARNR_MAXFRAMES]    = "VP8E_SET_ARNR_MAXFRAMES",
    [VP8E_SET_ARNR_STRENGTH]     = "VP8E_SET_ARNR_STRENGTH",
    [VP8E_SET_ARNR_TYPE]         = "VP8E_SET_ARNR_TYPE",
    [VP8E_SET_TUNING]            = "VP8E_SET_TUNING",
    [VP8E_SET_CQ_LEVEL]          = "VP8E_SET_CQ_LEVEL",
    [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",
}

String mappings for enum vp8e_enc_control_id.

Definition at line 112 of file libvpxenc.c.

Referenced by codecctl_int().

const AVCodecDefault defaults[]

static

Initial value:

= {
    { "qmin",             "-1" },
    { "qmax",             "-1" },
    { "g",                "-1" },
    { "keyint_min",       "-1" },
    { NULL },
}

Definition at line 1080 of file libvpxenc.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation