common internal api header. More...

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

Data Structures
struct	InternalBuffer

struct	AVCodecInternal

struct	AVCodecDefault

Macros
#define	FF_SANE_NB_CHANNELS 128U

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

Functions
AVHWAccel *	ff_find_hwaccel (enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
	Return the hardware accelerated codec for codec codec_id and pixel format pix_fmt.

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.

unsigned int	avpriv_toupper4 (unsigned int x)

void	ff_init_buffer_info (AVCodecContext s, AVFrame frame)
	does needed setup of pkt_pts/pos and such for (re)get_buffer();

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

void	ff_packet_free_side_data (AVPacket *pkt)
	Remove and free all side data from packet.

int	ff_lock_avcodec (AVCodecContext *log_ctx)

int	ff_unlock_avcodec (void)

int	avpriv_lock_avformat (void)

int	avpriv_unlock_avformat (void)

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

int	ff_alloc_packet (AVPacket *avpkt, int size)

static av_always_inline int64_t	ff_samples_to_time_base (AVCodecContext *avctx, int64_t samples)
	Rescale from sample rate to AVCodecContext.time_base.

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

int	ff_thread_can_start_frame (AVCodecContext *avctx)

int	ff_get_logical_cpus (AVCodecContext *avctx)

int	avpriv_h264_has_num_reorder_frames (AVCodecContext *avctx)

void	ff_print_debug_info2 (AVCodecContext avctx, AVFrame pict, uint8_t mbskip_table, uint8_t visualization_buffer[3], int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
	Print debugging info for the given picture.

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.

int	ff_codec_close_recursive (AVCodecContext *avctx)
	Call avcodec_close recursively, counterpart to avcodec_open2_recursive.

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

AVDictionary **	ff_frame_get_metadatap (AVFrame *frame)

Variables
volatile int	ff_avcodec_locked

Detailed Description

common internal api header.

Definition in file internal.h.

Macro Definition Documentation

#define FF_SANE_NB_CHANNELS 128U

Definition at line 33 of file internal.h.

Referenced by avcodec_open2().

#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_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 147 of file internal.h.

Referenced by avcodec_open2(), and avformat_find_stream_info().

Function Documentation

AVHWAccel* ff_find_hwaccel	(	enum AVCodecID	codec_id,
		enum AVPixelFormat	pix_fmt
	)

Return the hardware accelerated codec for codec codec_id and pixel format pix_fmt.

Parameters

codec_id	the codec to match
pix_fmt	the pixel format to match

Returns: the hardware accelerated codec, or NULL if none was found.

Definition at line 2699 of file utils.c.

Referenced by ff_h263_decode_init(), h264_slice_header_init(), vc1_decode_init(), and vcr2_init_sequence().

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 2651 of file utils.c.

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

unsigned int avpriv_toupper4 ( unsigned int x )

Definition at line 2778 of file utils.c.

Referenced by ff_codec_get_id(), ff_MPV_common_init(), mpeg_decode_frame(), and validate_codec_tag().

void ff_init_buffer_info	(	AVCodecContext *	s,
		AVFrame *	frame
	)

does needed setup of pkt_pts/pos and such for (re)get_buffer();

Definition at line 548 of file utils.c.

Referenced by avcodec_default_reget_buffer(), ff_get_buffer(), and ff_thread_get_buffer().

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

Definition at line 513 of file utils.c.

Referenced by ff_h264_frame_start().

void ff_packet_free_side_data ( AVPacket * pkt )

Remove and free all side data from packet.

Definition at line 30 of file avpacket.c.

Referenced by avcodec_decode_audio4(), avcodec_decode_subtitle2(), and avcodec_decode_video2().

int ff_lock_avcodec ( AVCodecContext * log_ctx )

Definition at line 2730 of file utils.c.

Referenced by avcodec_close(), avcodec_open2(), ff_codec_close_recursive(), and ff_codec_open2_recursive().

int ff_unlock_avcodec ( void )

Definition at line 2748 of file utils.c.

Referenced by avcodec_close(), avcodec_open2(), ff_codec_close_recursive(), ff_codec_open2_recursive(), and ff_lock_avcodec().

int avpriv_lock_avformat ( void )

Definition at line 2760 of file utils.c.

Referenced by ff_tls_deinit(), and ff_tls_init().

int avpriv_unlock_avformat ( void )

Definition at line 2769 of file utils.c.

Referenced by ff_tls_deinit(), and ff_tls_init().

int ff_alloc_packet2	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		int	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

Returns: 0 on success, negative error code on failure

Definition at line 1147 of file utils.c.

Referenced by a64multi_encode_frame(), aac_encode_frame(), aacPlus_encode_frame(), adx_encode_frame(), alac_encode_frame(), amr_wb_encode_frame(), avui_encode_frame(), bmp_encode_frame(), dnxhd_encode_picture(), encode_frame(), encode_nals(), encode_picture_lossless(), encode_picture_ls(), encode_superframe(), Faac_encode_frame(), ff_alloc_packet(), ff_MPV_encode_picture(), flac_encode_frame(), flashsv2_encode_frame(), flashsv_encode_frame(), gif_encode_frame(), ilbc_encode_frame(), libgsm_encode_frame(), libopenjpeg_encode_frame(), libopus_encode(), libschroedinger_encode_frame(), mp3lame_encode_frame(), MPA_encode_frame(), oggvorbis_encode_frame(), pam_encode_frame(), pcm_encode_frame(), pcx_encode_frame(), pnm_encode_frame(), prores_encode_frame(), qtrle_encode_frame(), ra144_encode_frame(), raw_encode(), roq_dpcm_encode_frame(), roq_encode_frame(), storeframe(), sunrast_encode_frame(), svq1_encode_frame(), targa_encode_frame(), twolame_encode_frame(), utvideo_encode_frame(), v308_encode_frame(), v408_encode_frame(), v410_encode_frame(), vorbis_encode_frame(), XAVS_frame(), xbm_encode_frame(), xface_encode_frame(), xvid_encode_frame(), xwd_encode_frame(), y41p_encode_frame(), and yuv4_encode_frame().

int ff_alloc_packet	(	AVPacket *	avpkt,
		int	size
	)

Definition at line 1184 of file utils.c.

Referenced by cng_encode_frame().

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(), avcodec_encode_audio2(), encode_frame(), encode_superframe(), ff_af_queue_remove(), flac_encode_frame(), MPA_encode_frame(), oggvorbis_encode_frame(), twolame_encode_frame(), and vorbis_encode_frame().

int ff_get_buffer	(	AVCodecContext *	avctx,
		AVFrame *	frame
	)

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 579 of file utils.c.

Referenced by ac3_decode_frame(), adpcm_decode_frame(), adx_decode_frame(), amrnb_decode_frame(), amrwb_decode_frame(), ape_decode_frame(), atrac1_decode_frame(), atrac3_decode_frame(), aura_decode_frame(), avcodec_default_reget_buffer(), avui_decode_frame(), bfi_decode_frame(), bmp_decode_frame(), bmv_aud_decode_frame(), brpix_decode_frame(), cdg_decode_frame(), cdxl_decode_frame(), cinaudio_decode_frame(), cllc_decode_frame(), cmv_decode_frame(), cng_decode_frame(), cook_decode_frame(), copy_frame(), copy_output(), cyuv_decode_frame(), dca_decode_frame(), decode_element(), decode_frame(), decode_pic(), decode_tag(), decode_thread(), dfa_decode_frame(), dirac_decode_data_unit(), dirac_decode_picture_header(), dpcm_decode_frame(), dvvideo_decode_frame(), eightsvx_decode_frame(), encode_init(), escape124_decode_frame(), escape130_decode_frame(), evrc_decode_frame(), execute_code(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_snow_common_init_after_header(), ff_snow_frame_start(), ff_thread_get_buffer(), ff_thread_video_encode_frame(), ff_vp56_decode_frame(), flac_decode_frame(), frame_configure_elements(), g722_decode_frame(), g723_1_decode_frame(), get_buffer(), get_siz(), gif_decode_frame(), gsm_decode_frame(), idcin_decode_frame(), ilbc_decode_frame(), imc_decode_frame(), init_image(), ipvideo_decode_frame(), libcelt_dec_decode(), libgsm_decode_frame(), libopus_decode(), libschroedinger_decode_frame(), libspeex_decode_frame(), mace_decode_frame(), mp_decode_frame(), mpc7_decode_frame(), mpc8_decode_frame(), mss2_decode_frame(), mxpeg_decode_frame(), oggvorbis_decode_frame(), output_data(), paf_aud_decode(), pcm_bluray_decode_frame(), pcm_decode_frame(), pcx_decode_frame(), pnm_decode_frame(), ptx_decode_frame(), qcelp_decode_frame(), qdm2_decode_frame(), ra144_decode_frame(), ra288_decode_frame(), rl2_decode_frame(), roq_encode_frame(), s302m_decode_frame(), shorten_decode_frame(), sipr_decode_frame(), smka_decode_frame(), submit_packet(), sunrast_decode_frame(), svq1_decode_frame(), svq1_encode_frame(), synth_superframe(), tak_decode_frame(), tgq_decode_frame(), tmv_decode_frame(), tqi_decode_frame(), truespeech_decode_frame(), tta_decode_frame(), twin_decode_frame(), txd_decode_frame(), v308_decode_frame(), v408_decode_frame(), v410_decode_frame(), vble_decode_frame(), vcr1_decode_frame(), vmdaudio_decode_frame(), vmdvideo_decode_frame(), vorbis_decode_frame(), vqa_decode_frame(), wavesynth_decode(), wavpack_decode_frame(), wma_decode_superframe(), ws_snd_decode_frame(), xan_decode_frame(), xbm_decode_frame(), xface_decode_frame(), xwd_decode_frame(), y216_decode_frame(), y41p_decode_frame(), yop_decode_frame(), yuv4_decode_frame(), zero12v_decode_frame(), and zerocodec_decode_frame().

int ff_thread_can_start_frame ( AVCodecContext * avctx )

Definition at line 948 of file pthread.c.

Referenced by ff_h264_frame_start(), and ff_MPV_frame_start().

int ff_get_logical_cpus ( AVCodecContext * avctx )

Definition at line 167 of file pthread.c.

Referenced by ff_frame_thread_encoder_init(), frame_thread_init(), and thread_init().

int avpriv_h264_has_num_reorder_frames ( AVCodecContext * avctx )

Definition at line 105 of file h264.c.

Referenced by has_decode_delay_been_guessed().

void ff_print_debug_info2	(	AVCodecContext *	avctx,
		AVFrame *	pict,
		uint8_t *	mbskip_table,
		uint8_t *	visualization_buffer[3],
		int *	low_delay,
		int	mb_width,
		int	mb_height,
		int	mb_stride,
		int	quarter_sample
	)