#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	DecodeSimpleContext

struct	AVCodecInternal

struct	AVCodecDefault

Macros
#define	FF_CODEC_CAP_INIT_THREADSAFE (1 << 0)
	The codec does not modify any global variables in the init function, allowing to call the init function without locking any global mutexes. More...

#define	FF_CODEC_CAP_INIT_CLEANUP (1 << 1)
	The codec allows calling the close function for deallocation even if the init function returned a failure. More...

#define	FF_CODEC_CAP_SETS_PKT_DTS (1 << 2)
	Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set AVFrame.pkt_dts manually. More...

#define	FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM (1 << 3)
	The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame setting. More...

#define	FF_CODEC_CAP_EXPORTS_CROPPING (1 << 4)
	The decoder sets the cropping fields in the output frames manually. More...

#define	FF_CODEC_CAP_SLICE_THREAD_HAS_MF (1 << 5)
	Codec initializes slice-based threading with a main function. More...

#define	FF_CODEC_CAP_ALLOCATE_PROGRESS (1 << 6)

#define	FF_CODEC_TAGS_END -1
	AVCodec.codec_tags termination value. More...

#define	ff_tlog(ctx, ...) do { } while(0)

#define	FF_DEFAULT_QUANT_BIAS 999999

#define	FF_QSCALE_TYPE_MPEG1 0

#define	FF_QSCALE_TYPE_MPEG2 1

#define	FF_QSCALE_TYPE_H264 2

#define	FF_QSCALE_TYPE_VP56 3

#define	FF_SANE_NB_CHANNELS 512U

#define	FF_SIGNBIT(x) ((x) >> CHAR_BIT * sizeof(x) - 1)

#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...

#define	av_export_avcodec

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	avpriv_toupper4 (unsigned int x)

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

int	ff_alloc_packet2 (AVCodecContext avctx, AVPacket avpkt, int64_t size, int64_t min_size)
	Check AVPacket size and/or allocate data. More...

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	ff_codec_open2_recursive (AVCodecContext avctx, const AVCodec codec, AVDictionary **options)
	Call avcodec_open2 recursively by decrementing counter, unlocking mutex, calling the function and then restoring again. More...

int	avpriv_bprint_to_extradata (AVCodecContext avctx, struct AVBPrint buf)
	Finalize buf into extradata and set its size appropriately. More...

const uint8_t *	avpriv_find_start_code (const uint8_t p, const uint8_t end, uint32_t *state)

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...

int	ff_decode_frame_props (AVCodecContext avctx, AVFrame frame)
	Set various frame properties from the codec context / packet data. More...

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

int	ff_alloc_a53_sei (const AVFrame frame, size_t prefix_len, void data, size_t sei_size)
	Check AVFrame for A53 side data and allocate and fill SEI message with A53 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)

Variables
const uint8_t	ff_log2_run [41]

Detailed Description

common internal api header.

Definition in file internal.h.

Macro Definition Documentation

◆ FF_CODEC_CAP_INIT_THREADSAFE

#define FF_CODEC_CAP_INIT_THREADSAFE (1 << 0)

The codec does not modify any global variables in the init function, allowing to call the init function without locking any global mutexes.

Definition at line 40 of file internal.h.

◆ FF_CODEC_CAP_INIT_CLEANUP

#define FF_CODEC_CAP_INIT_CLEANUP (1 << 1)

The codec allows calling the close function for deallocation even if the init function returned a failure.

Without this capability flag, a codec does such cleanup internally when returning failures from the init function and does not expect the close function to be called at all.

Definition at line 48 of file internal.h.

◆ FF_CODEC_CAP_SETS_PKT_DTS

#define FF_CODEC_CAP_SETS_PKT_DTS (1 << 2)

Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set AVFrame.pkt_dts manually.

If the flag is set, decode.c won't overwrite this field. If it's unset, decode.c tries to guess the pkt_dts field from the input AVPacket.

Definition at line 55 of file internal.h.

◆ FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM

#define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM (1 << 3)

The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame setting.

Definition at line 60 of file internal.h.

◆ FF_CODEC_CAP_EXPORTS_CROPPING

#define FF_CODEC_CAP_EXPORTS_CROPPING (1 << 4)

The decoder sets the cropping fields in the output frames manually.

If this cap is set, the generic code will initialize output frame dimensions to coded rather than display values.

Definition at line 66 of file internal.h.

◆ FF_CODEC_CAP_SLICE_THREAD_HAS_MF

#define FF_CODEC_CAP_SLICE_THREAD_HAS_MF (1 << 5)

Codec initializes slice-based threading with a main function.

Definition at line 70 of file internal.h.

◆ FF_CODEC_CAP_ALLOCATE_PROGRESS

#define FF_CODEC_CAP_ALLOCATE_PROGRESS (1 << 6)

Definition at line 75 of file internal.h.

◆ FF_CODEC_TAGS_END

#define FF_CODEC_TAGS_END -1

AVCodec.codec_tags termination value.

Definition at line 80 of file internal.h.

◆ ff_tlog

#define ff_tlog	(	ctx,
		...
	)	do { } while(0)

Definition at line 86 of file internal.h.

◆ FF_DEFAULT_QUANT_BIAS

#define FF_DEFAULT_QUANT_BIAS 999999

Definition at line 90 of file internal.h.

◆ FF_QSCALE_TYPE_MPEG1

#define FF_QSCALE_TYPE_MPEG1 0

Definition at line 92 of file internal.h.

◆ FF_QSCALE_TYPE_MPEG2

#define FF_QSCALE_TYPE_MPEG2 1

Definition at line 93 of file internal.h.

◆ FF_QSCALE_TYPE_H264

#define FF_QSCALE_TYPE_H264 2

Definition at line 94 of file internal.h.

◆ FF_QSCALE_TYPE_VP56

#define FF_QSCALE_TYPE_VP56 3

Definition at line 95 of file internal.h.

◆ FF_SANE_NB_CHANNELS

#define FF_SANE_NB_CHANNELS 512U

Definition at line 97 of file internal.h.

◆ FF_SIGNBIT

#define FF_SIGNBIT ( x ) ((x) >> CHAR_BIT * sizeof(x) - 1)

Definition at line 99 of file internal.h.

◆ STRIDE_ALIGN

#define STRIDE_ALIGN 8

Definition at line 108 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 223 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 291 of file internal.h.

◆ av_export_avcodec

#define av_export_avcodec

Definition at line 399 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 1841 of file utils.c.

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

◆ avpriv_toupper4()

unsigned int avpriv_toupper4 ( unsigned int x )

Definition at line 1877 of file utils.c.

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 422 of file utils.c.

Referenced by h264_field_start().

◆ ff_alloc_packet2()

int ff_alloc_packet2	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		int64_t	size,
		int64_t	min_size
	)

Check AVPacket size and/or allocate data.

Encoders supporting AVCodec.encode2() can use this as a convenience to ensure the output packet data is large enough, whether provided by the user or allocated in this function.

Parameters

avctx	the AVCodecContext of the encoder
avpkt	the AVPacket If avpkt->data is already set, avpkt->size is checked to ensure it is large enough. If avpkt->data is NULL, a new buffer is allocated. avpkt->size is set to the specified size. All other AVPacket fields will be reset with av_init_packet().
size	the minimum required packet size
min_size	This is a hint to the allocation algorithm, which indicates to what minimal size the caller might later shrink the packet to. Encoders often allocate packets which are larger than the amount of data that is written into them as the exact amount is not known at the time of allocation. min_size represents the size a packet might be shrunk to by the caller. Can be set to 0. setting this roughly correctly allows the allocation code to choose between several allocation strategies to improve speed slightly.

Returns: non negative on success, negative error code on failure

Definition at line 32 of file encode.c.

Referenced by a64multi_encode_frame(), aac_encode_frame(), adx_encode_frame(), alac_encode_frame(), amr_wb_encode_frame(), aptx_encode_frame(), avui_encode_frame(), bmp_encode_frame(), cinepak_encode_frame(), cng_encode_frame(), dnxhd_encode_picture(), dvvideo_encode_frame(), encode_apng(), encode_frame(), encode_nals(), encode_picture_ls(), encode_png(), encode_superframe(), ff_mpv_encode_picture(), ffat_encode(), fits_encode_frame(), flac_encode_frame(), flashsv2_encode_frame(), flashsv_encode_frame(), g723_1_encode_frame(), gif_encode_frame(), hap_encode(), ilbc_encode_frame(), libcodec2_encode(), libgsm_encode_frame(), libkvazaar_encode(), libopenjpeg_encode_frame(), libopus_encode(), libshine_encode_frame(), libvorbis_encode_frame(), libwebp_anim_encode_frame(), libwebp_encode_frame(), libx265_encode_frame(), ljpeg_encode_frame(), magy_encode_frame(), mlp_encode_frame(), mp3lame_encode_frame(), MPA_encode_frame(), omx_encode_frame(), opus_encode_frame(), pam_encode_frame(), pcm_dvd_encode_frame(), pcm_encode_frame(), pcx_encode_frame(), pnm_encode_frame(), process_output_surface(), prores_encode_frame(), qtrle_encode_frame(), ra144_encode_frame(), raw_encode(), roq_dpcm_encode_frame(), roq_encode_frame(), s302m_encode2_frame(), sbc_encode_frame(), storeframe(), sunrast_encode_frame(), svc_encode_frame(), svq1_encode_frame(), targa_encode_frame(), tta_encode_frame(), twolame_encode_frame(), utvideo_encode_frame(), v308_encode_frame(), v408_encode_frame(), v410_encode_frame(), vorbis_encode_frame(), vtenc_cm_to_avpacket(), wavpack_encode_frame(), XAVS_frame(), xbm_encode_frame(), xface_encode_frame(), xvid_encode_frame(), xwd_encode_frame(), y41p_encode_frame(), and yuv4_encode_frame().

◆ 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 256 of file internal.h.

Referenced by amr_wb_encode_frame(), avcodec_encode_audio2(), encode_frame(), encode_superframe(), ff_af_queue_remove(), flac_encode_frame(), libvorbis_encode_frame(), MPA_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 269 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 1854 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(), bitpacked_decode_yuv422p10(), 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(), dpcm_decode_frame(), dss_sp_decode_frame(), dxtory_decode_v1_410(), dxtory_decode_v1_420(), dxtory_decode_v1_444(), dxtory_decode_v1_rgb(), dxtory_decode_v2(), eightsvx_decode_frame(), escape124_decode_frame(), escape130_decode_frame(), evrc_decode_frame(), execute_code(), 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_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(), 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(), ipvideo_decode_frame(), libcelt_dec_decode(), libcodec2_decode(), libgsm_decode_frame(), libopus_decode(), librsvg_decode_frame(), libspeex_decode_frame(), m101_decode_frame(), mace_decode_frame(), mediacodec_wrap_sw_buffer(), mp_decode_frame(), mpc7_decode_frame(), mpc8_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(), 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(), roq_encode_frame(), s302m_decode_frame(), sbc_decode_frame(), sgirle_decode_frame(), shorten_decode_frame(), sipr_decode_frame(), siren_decode(), smka_decode_frame(), speedhq_decode_frame(), submit_packet(), sunrast_decode_frame(), svc_decode_frame(), svq1_decode_frame(), svq1_encode_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(), vcr1_decode_frame(), vmdaudio_decode_frame(), vmdvideo_decode_frame(), vorbis_decode_frame(), vpx_decode(), vqa_decode_frame(), 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 1961 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(), fic_decode_frame(), flashsv_decode_frame(), flic_decode_frame_15_16BPP(), flic_decode_frame_24BPP(), flic_decode_frame_8BPP(), gif_decode_frame(), ir2_decode_frame(), mm_decode_frame(), 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(), xan_decode_frame(), and yop_decode_frame().

◆ ff_thread_can_start_frame()

int ff_thread_can_start_frame ( AVCodecContext * avctx )

Definition at line 906 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 61 of file h264dec.c.

Referenced by has_decode_delay_been_guessed().

◆ ff_codec_open2_recursive()

int ff_codec_open2_recursive	(	AVCodecContext *	avctx,
		const AVCodec *	codec,
		AVDictionary **	options
	)

Call avcodec_open2 recursively by decrementing counter, unlocking mutex, calling the function and then restoring again.

Assumes the mutex is already locked

Definition at line 553 of file utils.c.

Referenced by imm5_init(), init(), smvjpeg_decode_init(), tdsc_init(), and tiff_init().

◆ avpriv_bprint_to_extradata()

int avpriv_bprint_to_extradata	(	AVCodecContext *	avctx,
		struct AVBPrint *	buf
	)

Finalize buf into extradata and set its size appropriately.

Definition at line 1967 of file utils.c.

Referenced by dvdsub_init().

◆ avpriv_find_start_code()

const uint8_t* avpriv_find_start_code	(	const uint8_t *	p,
		const uint8_t *	end,
		uint32_t *	state
	)

◆ avpriv_codec_get_cap_skip_frame_fill_param()

int avpriv_codec_get_cap_skip_frame_fill_param ( const AVCodec * codec )

Definition at line 506 of file utils.c.

Referenced by try_decode_frame(), and try_decode_video_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 104 of file utils.c.

Referenced by alloc_buffers(), aom_decode(), apply_param_change(), av1_parser_parse(), avcodec_open2(), avs_decode_init(), bmp_decode_frame(), cdg_decode_init(), cdxl_decode_frame(), cfhd_decode(), clv_decode_init(), cmv_process_header(), codec_reinit(), 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(), get_siz(), gif_decode_frame(), h261_decode_frame(), hqa_decode_frame(), init_image(), libdav1d_receive_frame(), libopenjpeg_decode_frame(), librsvg_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(), pix_decode_frame(), pixlet_decode_frame(), process_frame_obj(), ptx_decode_frame(), rl2_decode_init(), rv20_decode_picture_header(), seqvideo_decode_init(), smvjpeg_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_dimensions(), update_size(), v4l2_handle_event(), 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 119 of file utils.c.

Referenced by decode_frame(), decode_header(), decode_sequence_header_adv(), dirac_decode_data_unit(), dvvideo_decode_frame(), export_stream_params(), ff_h263_decode_frame(), h264_slice_header_init(), mediacodec_dec_parse_format(), and truemotion1_decode_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 134 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 1279 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_decode_frame_props()

int ff_decode_frame_props	(	AVCodecContext *	avctx,
		AVFrame *	frame
	)

Set various frame properties from the codec context / packet data.

Definition at line 1685 of file decode.c.

Referenced by cuvid_output_frame(), ff_get_buffer(), ff_qsv_get_continuous_buffer(), ffmal_copy_frame(), qtrle_decode_frame(), raw_decode(), reget_buffer_internal(), vpx_decode(), and wrapped_avframe_decode().

◆ 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 2037 of file utils.c.

Referenced by aom_init(), 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_a53_sei()

int ff_alloc_a53_sei	(	const AVFrame *	frame,
		size_t	prefix_len,
		void **	data,
		size_t *	sei_size
	)

Check AVFrame for A53 side data and allocate and fill SEI message with A53 info.

Parameters

frame	Raw frame to get A53 side data from
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 A53 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

'GA94' is standard in North America for ATSC, but hard coding this style may not be the right thing to do – other formats do exist. This information is not available in the side_data so we are going with this right now.

Definition at line 2241 of file utils.c.

Referenced by ff_nvenc_send_frame(), qsv_h264_set_encode_ctrl(), vtenc_send_frame(), and X264_frame().

◆ 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 2284 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

Parameters

ctx	Context for the log msg
val_name	Name of the checked value, for log msg
array_valid_values	Array of valid int, ended with INT_MAX
default_value	Value return if checked value is not in the array

Returns: Value or default_value.

Definition at line 2305 of file utils.c.

Referenced by prores_encode_frame().

◆ ff_dvdsub_parse_palette()

void ff_dvdsub_parse_palette	(	uint32_t *	palette,
		const char *	p
	)

Definition at line 26 of file dvdsub.c.

Referenced by dvdsub_init(), and dvdsub_parse_extradata().

Variable Documentation

◆ ff_log2_run

const uint8_t ff_log2_run[41]

Definition at line 39 of file bitstream.c.

Referenced by decode_line_TMPL(), encode_line_TMPL(), ls_decode_line(), ls_encode_line(), and ls_encode_run().

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ FF_CODEC_CAP_INIT_THREADSAFE

◆ FF_CODEC_CAP_INIT_CLEANUP

◆ FF_CODEC_CAP_SETS_PKT_DTS

◆ FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM

◆ FF_CODEC_CAP_EXPORTS_CROPPING

◆ FF_CODEC_CAP_SLICE_THREAD_HAS_MF

◆ FF_CODEC_CAP_ALLOCATE_PROGRESS

◆ FF_CODEC_TAGS_END

◆ ff_tlog

◆ FF_DEFAULT_QUANT_BIAS

◆ FF_QSCALE_TYPE_MPEG1

◆ FF_QSCALE_TYPE_MPEG2

◆ FF_QSCALE_TYPE_H264

◆ FF_QSCALE_TYPE_VP56

◆ FF_SANE_NB_CHANNELS

◆ FF_SIGNBIT

◆ STRIDE_ALIGN

◆ FF_MAX_EXTRADATA_SIZE

◆ FF_REGET_BUFFER_FLAG_READONLY

◆ av_export_avcodec

Function Documentation

◆ ff_match_2uint16()

◆ avpriv_toupper4()

◆ ff_color_frame()

◆ ff_alloc_packet2()

◆ ff_samples_to_time_base()

◆ ff_exp2fi()

◆ ff_get_buffer()

◆ ff_reget_buffer()

◆ ff_thread_can_start_frame()

◆ avpriv_h264_has_num_reorder_frames()

◆ ff_codec_open2_recursive()

◆ avpriv_bprint_to_extradata()

◆ avpriv_find_start_code()

◆ avpriv_codec_get_cap_skip_frame_fill_param()

◆ ff_set_dimensions()

◆ ff_set_sar()

◆ ff_side_data_update_matrix_encoding()

◆ ff_get_format()

◆ ff_decode_frame_props()

◆ ff_add_cpb_side_data()

◆ ff_alloc_a53_sei()

◆ ff_guess_coded_bitrate()

◆ ff_int_from_list_or_default()

◆ ff_dvdsub_parse_palette()

Variable Documentation

◆ ff_log2_run