#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...

#define	FF_REGET_BUFFER_FLAG_READONLY 1
	the returned buffer does not need to be writable 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 int64_t	ff_samples_to_time_base (AVCodecContext *avctx, int64_t samples)
	Rescale from sample rate to AVCodecContext.time_base. More...

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

int	ff_get_buffer (AVCodecContext avctx, AVFrame frame, int flags)
	Get a buffer for a frame. More...

int	ff_reget_buffer (AVCodecContext avctx, AVFrame frame, int flags)
	Identical in function to ff_get_buffer(), except it reuses the existing buffer if available. More...

int	ff_thread_can_start_frame (AVCodecContext *avctx)

int	avpriv_h264_has_num_reorder_frames (AVCodecContext *avctx)

int	avpriv_codec_get_cap_skip_frame_fill_param (const AVCodec *codec)

int	ff_set_dimensions (AVCodecContext *s, int width, int height)
	Check that the provided frame dimensions are valid and set them on the codec context. More...

int	ff_set_sar (AVCodecContext *avctx, AVRational sar)
	Check that the provided sample aspect ratio is valid and set it on the codec context. More...

int	ff_side_data_update_matrix_encoding (AVFrame *frame, enum AVMatrixEncoding matrix_encoding)
	Add or update AV_FRAME_DATA_MATRIXENCODING side data. More...

int	ff_get_format (AVCodecContext avctx, const enum AVPixelFormat fmt)
	Select the (possibly hardware accelerated) pixel format. More...

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...

void	ff_dvdsub_parse_palette (uint32_t palette, const char p)

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 36 of file internal.h.

◆ STRIDE_ALIGN

#define STRIDE_ALIGN 8

Definition at line 45 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 168 of file internal.h.

◆ FF_REGET_BUFFER_FLAG_READONLY

#define FF_REGET_BUFFER_FLAG_READONLY 1

the returned buffer does not need to be writable

Definition at line 208 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 872 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(), mpeg_decode_frame(), and validate_codec_tag().

◆ ff_color_frame()

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

Definition at line 414 of file utils.c.

Referenced by h264_field_start().

◆ ff_samples_to_time_base()

static av_always_inline int64_t ff_samples_to_time_base	(	AVCodecContext *	avctx,
		int64_t	samples
	)

static

Rescale from sample rate to AVCodecContext.time_base.

Definition at line 173 of file internal.h.

Referenced by amr_wb_encode_frame(), encode_frame(), encode_simple_internal(), encode_superframe(), ff_ac3_encode_frame_common_end(), ff_af_queue_remove(), flac_encode_frame(), libvorbis_encode_frame(), MPA_encode_frame(), pcm_bluray_encode_frame(), pcm_dvd_encode_frame(), tta_encode_frame(), twolame_encode_frame(), and wavpack_encode_frame().

◆ ff_exp2fi()

static av_always_inline float ff_exp2fi ( int x )

static

2^(x) for integer x

Returns: correctly rounded float

Definition at line 186 of file internal.h.

Referenced by init_band_stepsize(), and sbr_dequant().

◆ ff_get_buffer()

int ff_get_buffer	(	AVCodecContext *	avctx,
		AVFrame *	frame,
		int	flags
	)

Get a buffer for a frame.

This is a wrapper around AVCodecContext.get_buffer() and should be used instead calling get_buffer() directly.

Definition at line 1403 of file decode.c.

Referenced by ac3_decode_frame(), adpcm_decode_frame(), adx_decode_frame(), alloc_frame(), amrnb_decode_frame(), amrwb_decode_frame(), aom_decode(), ape_decode_frame(), aptx_decode_frame(), atrac1_decode_frame(), atrac3_decode_frame(), atrac3al_decode_frame(), atrac3p_decode_frame(), atrac9_decode_frame(), aura_decode_frame(), avui_decode_frame(), bfi_decode_frame(), binkaudio_receive_frame(), bmp_decode_frame(), bmv_aud_decode_frame(), cdg_decode_frame(), cdxl_decode_frame(), cinaudio_decode_frame(), cmv_decode_frame(), cng_decode_frame(), cook_decode_frame(), copy_frame(), copy_output(), cuvid_output_frame(), cyuv_decode_frame(), dds_decode(), decode_frame(), decode_pic(), decode_tag(), dfa_decode_frame(), dfpwm_dec_frame(), dpcm_decode_frame(), dss_sp_decode_frame(), eightsvx_decode_frame(), escape124_decode_frame(), escape130_decode_frame(), evrc_decode_frame(), execute_code(), fastaudio_decode(), fdk_aac_decode_frame(), ff_dca_lbr_filter_frame(), ff_dca_xll_filter_frame(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_snow_common_init_after_header(), ff_snow_get_buffer(), ff_thread_get_buffer(), ff_thread_get_ext_buffer(), ff_twinvq_decode_frame(), ff_vp56_decode_frame(), ffat_decode(), ffmal_copy_frame(), filter_frame(), filter_frame_fixed(), filter_frame_float(), fits_decode_frame(), frame_configure_elements(), g2m_decode_frame(), g722_decode_frame(), g723_1_decode_frame(), gdv_decode_frame(), gem_decode_frame(), get_buffer(), get_buffer_with_edge(), gif_decode_frame(), gsm_decode_frame(), hcom_decode(), hnm_decode_frame(), hq_decode_frame(), hqa_decode_frame(), idcin_decode_frame(), ilbc_decode_frame(), imc_decode_frame(), init_frames(), ipu_decode_frame(), ipvideo_decode_frame(), libcelt_dec_decode(), libcodec2_decode(), libgsm_decode_frame(), libjxl_decode_frame(), libopus_decode(), librsvg_decode_frame(), libspeex_decode_frame(), libuavs3d_decode_frame(), m101_decode_frame(), mace_decode_frame(), mediacodec_wrap_sw_buffer(), mp_decode_frame(), mpc7_decode_frame(), mpc8_decode_frame(), msp2_decode_frame(), mss2_decode_frame(), mvc_decode_frame(), mxpeg_decode_frame(), oggvorbis_decode_frame(), on2avc_decode_frame(), opus_decode_packet(), output_data(), paf_audio_decode(), pcm_bluray_decode_frame(), pcm_decode_frame(), pcm_dvd_decode_frame(), pcx_decode_frame(), pgx_decode_frame(), pix_decode_frame(), pnm_decode_frame(), ptx_decode_frame(), qcelp_decode_frame(), qdm2_decode_frame(), qdmc_decode_frame(), ra144_decode_frame(), ra288_decode_frame(), reget_buffer_internal(), rl2_decode_frame(), s302m_decode_frame(), sbc_decode_frame(), sga_decode_frame(), sgirle_decode_frame(), shorten_decode_frame(), sipr_decode_frame(), siren_decode(), smka_decode_frame(), speex_decode_frame(), submit_packet(), sunrast_decode_frame(), svc_decode_frame(), svq1_decode_frame(), synth_superframe(), tdsc_decode_frame(), tgq_decode_frame(), tgv_decode_frame(), thread_get_buffer_internal(), tmv_decode_frame(), tqi_decode_frame(), truemotion2rt_decode_frame(), truespeech_decode_frame(), txd_decode_frame(), v308_decode_frame(), v408_decode_frame(), vbn_decode_frame(), vcr1_decode_frame(), vmdaudio_decode_frame(), vmdvideo_decode_frame(), vorbis_decode_frame(), vpx_decode(), wavesynth_decode(), wma_decode_superframe(), wmapro_decode_packet(), ws_snd_decode_frame(), xan_decode_frame(), xbm_decode_frame(), xface_decode_frame(), xma_decode_packet(), xpm_decode_frame(), xwd_decode_frame(), y216_decode_frame(), y41p_decode_frame(), yuv4_decode_frame(), zero12v_decode_frame(), and zerocodec_decode_frame().

◆ ff_reget_buffer()

int ff_reget_buffer	(	AVCodecContext *	avctx,
		AVFrame *	frame,
		int	flags
	)

Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.

Definition at line 1521 of file decode.c.

Referenced by aasc_decode_frame(), avs_decode_frame(), bethsoftvid_decode_frame(), cdg_decode_frame(), cdtoons_decode_frame(), cinepak_decode_frame(), cinvideo_decode_frame(), clv_decode_frame(), cpia_decode_frame(), decode_frame(), decode_frame_lscr(), fic_decode_frame(), flashsv_decode_frame(), flic_decode_frame_15_16BPP(), flic_decode_frame_24BPP(), flic_decode_frame_8BPP(), gif_decode_frame(), imx_decode_frame(), ir2_decode_frame(), mm_decode_frame(), mobiclip_decode(), mp_decode_frame(), msrle_decode_frame(), mss1_decode_frame(), mss2_decode_frame(), mss3_decode_frame(), mss4_decode_frame(), msvideo1_decode_frame(), paf_video_decode(), qtrle_decode_frame(), roq_decode_frame(), rpza_decode_stream(), rscc_decode_frame(), screenpresso_decode_frame(), seqvideo_decode_frame(), smc_decode_frame(), truemotion1_decode_frame(), tscc2_decode_frame(), ulti_decode_frame(), vqa_decode_frame(), xan_decode_frame(), and yop_decode_frame().

◆ ff_thread_can_start_frame()

int ff_thread_can_start_frame ( AVCodecContext * avctx )

Definition at line 934 of file pthread_frame.c.

Referenced by ff_mpv_frame_start(), and h264_frame_start().

◆ 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 443 of file utils.c.

Referenced by try_decode_frame().

◆ ff_set_dimensions()

int ff_set_dimensions	(	AVCodecContext *	s,
		int	width,
		int	height
	)

Check that the provided frame dimensions are valid and set them on the codec context.

Definition at line 90 of file utils.c.

Referenced by alloc_buffers(), aom_decode(), apply_param_change(), avcodec_open2(), avs_decode_init(), bmp_decode_frame(), cdg_decode_init(), cdxl_decode_frame(), cfhd_decode(), clv_decode_init(), cmv_process_header(), codec_reinit(), cri_decode_frame(), dds_decode(), decode_blocks(), decode_fint(), decode_frame(), decode_frame_header(), decode_frame_headers(), decode_header(), decode_idat_chunk(), decode_init(), decode_seq_header(), dirac_decode_data_unit(), dnxhd_decode_frame(), dvbsub_parse_display_definition_segment(), dvdsub_parse_extradata(), dvvideo_decode_frame(), execute_code(), ff_h263_decode_frame(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_pnm_decode_header(), ff_rv34_decode_frame(), ff_vc1_decode_entry_point(), ff_vc1_decode_sequence_header(), ff_vp56_decode_frame(), ffmal_update_format(), fits_decode_frame(), flashsv_decode_frame(), g2m_decode_frame(), gem_decode_frame(), get_siz(), gif_decode_frame(), h261_decode_frame(), hqa_decode_frame(), init_image(), libdav1d_parse_extradata(), libdav1d_receive_frame(), libjxl_decode_frame(), libopenjpeg_decode_frame(), librsvg_decode_frame(), libuavs3d_decode_frame(), magy_decode_frame(), mediacodec_dec_parse_format(), mimic_decode_frame(), mpeg4_decode_header(), mpeg_decode_postinit(), mpegvideo_extract_headers(), mvc_decode_init(), parse_presentation_segment(), pcx_decode_frame(), pgx_decode_frame(), photocd_decode_frame(), pix_decode_frame(), pixlet_decode_frame(), process_frame_obj(), ptx_decode_frame(), qoi_decode_frame(), rl2_decode_init(), rv20_decode_picture_header(), seqvideo_decode_init(), set_context_with_sequence(), sga_decode_frame(), sunrast_decode_frame(), svc_decode_frame(), svq1_decode_frame(), svq3_decode_init(), tdsc_parse_tdsf(), tgq_decode_frame(), tgv_decode_frame(), tqi_decode_frame(), truemotion1_decode_header(), truemotion2rt_decode_header(), txd_decode_frame(), update_context_with_frame_header(), update_dimensions(), update_size(), v4l2_handle_event(), vbn_decode_frame(), vp56_size_changed(), vp5_parse_header(), vp6_parse_header(), vp8_lossless_decode_frame(), vpx_decode(), vqa_decode_init(), xbm_decode_frame(), xpm_decode_frame(), and xwd_decode_frame().

◆ ff_set_sar()

int ff_set_sar	(	AVCodecContext *	avctx,
		AVRational	sar
	)

Check that the provided sample aspect ratio is valid and set it on the codec context.

Definition at line 105 of file utils.c.

Referenced by aom_decode(), decode_frame(), decode_sequence_header_adv(), dirac_decode_data_unit(), dvvideo_decode_frame(), export_stream_params(), ff_h263_decode_frame(), h264_slice_header_init(), libdav1d_receive_frame(), mediacodec_dec_parse_format(), truemotion1_decode_header(), and update_context_with_frame_header().

◆ ff_side_data_update_matrix_encoding()

int ff_side_data_update_matrix_encoding	(	AVFrame *	frame,
		enum AVMatrixEncoding	matrix_encoding
	)

Add or update AV_FRAME_DATA_MATRIXENCODING side data.

Definition at line 120 of file utils.c.

Referenced by ac3_decode_frame(), ff_dca_core_filter_frame(), ff_dca_lbr_filter_frame(), ff_dca_xll_filter_frame(), and output_data().

◆ ff_get_format()

int ff_get_format	(	AVCodecContext *	avctx,
		const enum AVPixelFormat *	fmt
	)

Select the (possibly hardware accelerated) pixel format.

This is a wrapper around AVCodecContext.get_format() and should be used instead of calling get_format() directly.

The list of pixel formats must contain at least one valid entry, and is terminated with AV_PIX_FMT_NONE. If it is possible to decode to software, the last entry in the list must be the most accurate software format. If it is not possible to decode to software, AVCodecContext.sw_pix_fmt must be set before calling this function.

Definition at line 1100 of file decode.c.

Referenced by cuvid_decode_init(), decode_init(), ff_mediacodec_dec_init(), ff_mjpeg_decode_sof(), ff_thread_get_format(), ffmmal_init_decoder(), get_pixel_format(), h263_get_format(), qsv_decode_preinit(), submit_packet(), and vc1_decode_init().

◆ 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 1032 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 1072 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 1136 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