#include <stdint.h>
#include "libavutil/buffer.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixfmt.h"
#include "avcodec.h"
#include "config.h"

Data Structures
struct	AVCodecInternal

Macros
#define	FF_SANE_NB_CHANNELS 512U

#define	STRIDE_ALIGN 8

#define	FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)
	Maximum size in bytes of extradata. More...

Functions
int	ff_match_2uint16 (const uint16_t(*tab)[2], int size, int a, int b)
	Return the index into tab at which {a,b} match elements {[0],[1]} of tab. More...

unsigned int	ff_toupper4 (unsigned int x)

void	ff_color_frame (AVFrame *frame, const int color[4])

static av_always_inline float	ff_exp2fi (int x)
	2^(x) for integer x More...

int	avpriv_h264_has_num_reorder_frames (AVCodecContext *avctx)

int	avpriv_codec_get_cap_skip_frame_fill_param (const AVCodec *codec)

AVCPBProperties *	ff_add_cpb_side_data (AVCodecContext *avctx)
	Add a CPB properties side data to an encoding context. More...

int	ff_alloc_timecode_sei (const AVFrame frame, AVRational rate, size_t prefix_len, void data, size_t sei_size)
	Check AVFrame for S12M timecode side data and allocate and fill TC SEI message with timecode info. More...

int64_t	ff_guess_coded_bitrate (AVCodecContext *avctx)
	Get an estimated video bitrate based on frame size, frame rate and coded bits per pixel. More...

int	ff_int_from_list_or_default (void ctx, const char val_name, int val, const int *array_valid_values, int default_value)
	Check if a value is in the list. More...

Detailed Description

common internal api header.

Definition in file internal.h.

Macro Definition Documentation

◆ FF_SANE_NB_CHANNELS

#define FF_SANE_NB_CHANNELS 512U

Definition at line 40 of file internal.h.

◆ STRIDE_ALIGN

#define STRIDE_ALIGN 8

Definition at line 49 of file internal.h.

◆ FF_MAX_EXTRADATA_SIZE

#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)

Maximum size in bytes of extradata.

This value was chosen such that every bit of the buffer is addressable by a 32-bit signed integer as used by get_bits.

Definition at line 183 of file internal.h.

Function Documentation

◆ ff_match_2uint16()

int ff_match_2uint16	(	const uint16_t(*)	tab[2],
		int	size,
		int	a,
		int	b
	)

Return the index into tab at which {a,b} match elements {[0],[1]} of tab.

If there is no such matching pair then size is returned.

Definition at line 877 of file utils.c.

Referenced by ff_h263_encode_picture_header(), ff_mpv_encode_init(), and svq1_write_header().

◆ ff_toupper4()

unsigned int ff_toupper4 ( unsigned int x )

Definition at line 29 of file to_upper4.h.

Referenced by ff_codec_get_id(), ff_mpv_decode_init(), and validate_codec_tag().

◆ ff_color_frame()

void ff_color_frame	(	AVFrame *	frame,
		const int	color[4]
	)

Definition at line 409 of file utils.c.

Referenced by h264_field_start().

◆ ff_exp2fi()

static av_always_inline float ff_exp2fi ( int x )

static

2^(x) for integer x

Returns: correctly rounded float

Definition at line 189 of file internal.h.

Referenced by init_band_stepsize(), and sbr_dequant().

◆ avpriv_h264_has_num_reorder_frames()

int avpriv_h264_has_num_reorder_frames ( AVCodecContext * avctx )

Definition at line 57 of file h264dec.c.

Referenced by has_decode_delay_been_guessed().

◆ avpriv_codec_get_cap_skip_frame_fill_param()

int avpriv_codec_get_cap_skip_frame_fill_param ( const AVCodec * codec )

Definition at line 438 of file utils.c.

Referenced by try_decode_frame().

◆ ff_add_cpb_side_data()

AVCPBProperties* ff_add_cpb_side_data ( AVCodecContext * avctx )

Add a CPB properties side data to an encoding context.

Definition at line 1028 of file utils.c.

Referenced by aom_init(), config_enc_params(), ff_mpv_encode_init(), libx265_encode_init(), mpeg_decode_sequence_extension(), nvenc_setup_encoder(), qsv_retrieve_enc_params(), svc_encode_init(), vpx_init(), and X264_init().

◆ ff_alloc_timecode_sei()

int ff_alloc_timecode_sei	(	const AVFrame *	frame,
		AVRational	rate,
		size_t	prefix_len,
		void **	data,
		size_t *	sei_size
	)

Check AVFrame for S12M timecode side data and allocate and fill TC SEI message with timecode info.

Parameters

frame	Raw frame to get S12M timecode side data from
rate	The frame rate
prefix_len	Number of bytes to allocate before SEI message
data	Pointer to a variable to store allocated memory Upon return the variable will hold NULL on error or if frame has no S12M timecode info. Otherwise it will point to prefix_len uninitialized bytes followed by *sei_size SEI message
sei_size	Pointer to a variable to store generated SEI message length

Returns: Zero on success, negative error code on failure

Definition at line 1068 of file utils.c.

Referenced by prepare_sei_data_array().

◆ ff_guess_coded_bitrate()

int64_t ff_guess_coded_bitrate ( AVCodecContext * avctx )

Get an estimated video bitrate based on frame size, frame rate and coded bits per pixel.

Definition at line 1132 of file utils.c.

Referenced by encode_init(), raw_encode_init(), v308_encode_init(), v408_encode_init(), v410_encode_init(), and y41p_encode_init().

◆ ff_int_from_list_or_default()

int ff_int_from_list_or_default	(	void *	ctx,
		const char *	val_name,
		int	val,
		const int *	array_valid_values,
		int	default_value
	)

Check if a value is in the list.

If not, return the default value