internal.h File Reference

common internal API header More...

#include <limits.h>
#include <stdint.h>
#include <stddef.h>
#include <assert.h>
#include "config.h"
#include "attributes.h"
#include "timer.h"
#include "cpu.h"
#include "dict.h"
#include "macros.h"
#include "pixfmt.h"
#include "version.h"
#include "libm.h"

Go to the source code of this file.

Macros
#define	NDEBUG
#define	av_export
#define	FF_DISABLE_DEPRECATION_WARNINGS
#define	FF_ENABLE_DEPRECATION_WARNINGS
#define	FF_MEMORY_POISON   0x2a
#define	MAKE_ACCESSORS(str, name, type, field)
#define	E1(x)   x
#define	AV_CHECK_OFFSET(s, m, o)
#define	LOCAL_ALIGNED_A(a, t, v, s, o,...)
#define	LOCAL_ALIGNED_D(a, t, v, s, o,...)
#define	LOCAL_ALIGNED(a, t, v,...)   E1(LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,))
#define	LOCAL_ALIGNED_8(t, v,...)   LOCAL_ALIGNED(8, t, v, __VA_ARGS__)
#define	LOCAL_ALIGNED_16(t, v,...)   LOCAL_ALIGNED(16, t, v, __VA_ARGS__)
#define	LOCAL_ALIGNED_32(t, v,...)   LOCAL_ALIGNED(32, t, v, __VA_ARGS__)
#define	FF_ALLOC_OR_GOTO(ctx, p, size, label)
#define	FF_ALLOCZ_OR_GOTO(ctx, p, size, label)
#define	FF_ALLOC_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)
#define	FF_ALLOCZ_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)
#define	NULL_IF_CONFIG_SMALL(x)   x
	Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. More...
#define	ONLY_IF_THREADS_ENABLED(x)   NULL
	Define a function with only the non-default version specified. More...
#define	PTRDIFF_SPECIFIER   "td"
#define	SIZE_SPECIFIER   "zu"
#define	ff_dlog(ctx,...)   do { if (0) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)

Functions
void	avpriv_report_missing_feature (void *avc, const char *msg,...) av_printf_format(2
	Log a generic warning message about a missing feature. More...
void void	avpriv_request_sample (void *avc, const char *msg,...) av_printf_format(2
	Log a generic warning message about a missing feature. More...
static av_always_inline av_const int64_t	ff_rint64_clip (double a, int64_t amin, int64_t amax)
	Clip and convert a double value into the long long amin-amax range. More...
av_warn_unused_result int	avpriv_open (const char *filename, int flags,...)
	A wrapper for open() setting O_CLOEXEC. More...
int	avpriv_tempfile (const char *prefix, char **filename, int log_offset, void *log_ctx)
	Wrapper to work around the lack of mkstemp() on mingw. More...
int	avpriv_set_systematic_pal2 (uint32_t pal[256], enum AVPixelFormat pix_fmt)
static av_always_inline av_const int	avpriv_mirror (int x, int w)
void	ff_check_pixfmt_descriptors (void)
int	avpriv_dict_set_timestamp (AVDictionary **dict, const char *key, int64_t timestamp)
	Set a dictionary value to an ISO-8601 compliant timestamp string. More...

Variables
const uint8_t	ff_reverse [256]

Detailed Description

common internal API header

Definition in file internal.h.

Macro Definition Documentation

#define NDEBUG

Definition at line 30 of file internal.h.

#define av_export

Definition at line 65 of file internal.h.

#define FF_DISABLE_DEPRECATION_WARNINGS

Definition at line 80 of file internal.h.

Referenced by alac_encode_init(), av_frame_get_qp_table(), av_frame_set_qp_table(), av_init_packet(), av_packet_copy_props(), av_packet_rescale_ts(), av_parser_init(), av_stream_get_codec_timebase(), avcodec_close(), avcodec_copy_context(), avcodec_decode_audio4(), avcodec_open2(), avformat_find_stream_info(), avformat_match_stream_specifier(), avformat_new_stream(), avi_read_header(), avpriv_set_pts_info(), bmp_encode_frame(), compute_pkt_fields(), copy_frame(), cuvid_output_frame(), decode_dvd_subtitles(), decode_nal_units(), display_end_segment(), dnxhd_encode_init(), dnxhd_encode_picture(), dnxhd_load_picture(), do_qsv_decode(), do_swap(), dvvideo_encode_frame(), encode_dvd_subtitles(), encode_frame(), encode_init(), encode_init_ls(), encode_picture_ls(), encode_thread(), ff_init_buffer_info(), ff_init_me(), ff_mp4_read_dec_config_descr(), ff_mpv_encode_init(), ff_mpv_encode_picture(), ff_rate_control_init(), ff_vdpau_common_end_frame(), ffat_decode(), ffmal_copy_frame(), find_decoder(), find_fps(), find_smallest_bounding_rectangle(), flac_encode_frame(), flac_encode_init(), flashsv_encode_frame(), frame_copy_props(), frame_end(), free_stream(), get_frame_defaults(), gif_decode_frame(), gif_encode_init(), init_muxer(), init_video_param(), io_open_default(), j2kenc_init(), libschroedinger_decode_frame(), libschroedinger_encode_frame(), libschroedinger_encode_init(), libx265_encode_frame(), ljpeg_encode_bgr(), ljpeg_encode_init(), ljpeg_encode_yuv(), matroska_parse_frame(), mediacodec_wrap_hw_buffer(), mediacodec_wrap_sw_buffer(), mkv_write_packet_internal(), mov_parse_stsd_data(), mov_read_dac3(), mov_read_dec3(), mov_write_tmcd_tag(), mov_write_video_tag(), mpeg_decode_gop(), mpeg_decode_user_data(), pam_encode_init(), pcx_encode_init(), png_enc_init(), pnm_encode_init(), process_output_surface(), qtrle_encode_frame(), raw_encode_init(), read_frame_internal(), set_codec_from_probe_data(), setup_hwaccel_for_pixfmt(), srt_write_packet(), storeframe(), sunrast_encode_init(), svc_decode_frame(), svc_encode_init(), svq1_encode_frame(), svq1_encode_plane(), targa_encode_frame(), targa_encode_init(), teletext_decode_frame(), update_context_from_thread(), update_stream_avctx(), utvideo_encode_frame(), utvideo_encode_init(), v410_encode_frame(), v4l2_read_packet(), vp9_decode_frame(), vpx_init(), X264_frame(), X264_init(), XAVS_frame(), XAVS_init(), xsub_encode(), xvid_encode_frame(), xvid_encode_init(), and yuv4_generate_header().

#define FF_ENABLE_DEPRECATION_WARNINGS

Definition at line 81 of file internal.h.

Referenced by alac_encode_init(), av_frame_get_qp_table(), av_frame_set_qp_table(), av_init_packet(), av_packet_copy_props(), av_packet_rescale_ts(), av_parser_init(), av_stream_get_codec_timebase(), avcodec_close(), avcodec_copy_context(), avcodec_decode_audio4(), avcodec_open2(), avformat_find_stream_info(), avformat_match_stream_specifier(), avformat_new_stream(), avi_read_header(), avpriv_set_pts_info(), bmp_encode_frame(), compute_pkt_fields(), copy_frame(), cuvid_output_frame(), decode_dvd_subtitles(), decode_nal_units(), display_end_segment(), dnxhd_encode_init(), dnxhd_encode_picture(), dnxhd_load_picture(), do_qsv_decode(), do_swap(), dvvideo_encode_frame(), encode_dvd_subtitles(), encode_frame(), encode_init(), encode_init_ls(), encode_picture_ls(), encode_thread(), ff_init_buffer_info(), ff_init_me(), ff_mp4_read_dec_config_descr(), ff_mpv_encode_init(), ff_mpv_encode_picture(), ff_rate_control_init(), ff_vdpau_common_end_frame(), ffat_decode(), ffmal_copy_frame(), find_decoder(), find_fps(), find_smallest_bounding_rectangle(), flac_encode_frame(), flac_encode_init(), flashsv_encode_frame(), frame_copy_props(), frame_end(), free_stream(), get_frame_defaults(), gif_decode_frame(), gif_encode_init(), init_muxer(), init_video_param(), io_open_default(), j2kenc_init(), libschroedinger_decode_frame(), libschroedinger_encode_frame(), libschroedinger_encode_init(), libx265_encode_frame(), ljpeg_encode_bgr(), ljpeg_encode_init(), ljpeg_encode_yuv(), matroska_parse_frame(), mediacodec_wrap_hw_buffer(), mediacodec_wrap_sw_buffer(), mkv_write_packet_internal(), mov_parse_stsd_data(), mov_read_dac3(), mov_read_dec3(), mov_write_tmcd_tag(), mov_write_video_tag(), mpeg_decode_gop(), mpeg_decode_user_data(), pam_encode_init(), pcx_encode_init(), png_enc_init(), pnm_encode_init(), process_output_surface(), qtrle_encode_frame(), raw_encode_init(), read_frame_internal(), set_codec_from_probe_data(), setup_hwaccel_for_pixfmt(), srt_write_packet(), storeframe(), sunrast_encode_init(), svc_decode_frame(), svc_encode_init(), svq1_encode_frame(), svq1_encode_plane(), targa_encode_frame(), targa_encode_init(), teletext_decode_frame(), update_context_from_thread(), update_stream_avctx(), utvideo_encode_frame(), utvideo_encode_init(), v410_encode_frame(), v4l2_read_packet(), vp9_decode_frame(), vpx_init(), X264_frame(), X264_init(), XAVS_frame(), XAVS_init(), xsub_encode(), xvid_encode_frame(), xvid_encode_init(), and yuv4_generate_header().

#define FF_MEMORY_POISON   0x2a

Definition at line 85 of file internal.h.

Referenced by av_dynarray2_add(), av_malloc(), and pool_release_buffer().

#define MAKE_ACCESSORS	(		str,
			name,
			type,
			field
	)

Value:

type av_##name##_get_##field(const str *s) { return s->field; } \
    void av_##name##_set_##field(str *s, type v) { s->field = v; }

Definition at line 87 of file internal.h.

#define E1

(

x

)

x

Definition at line 93 of file internal.h.

#define AV_CHECK_OFFSET	(		s,
			m,
			o
	)

Value:

struct check_##o {    \
        int x_##o[offsetof(s, m) == o? 1: -1];         \
    }

Definition at line 98 of file internal.h.

#define LOCAL_ALIGNED_A	(		a,
			t,
			v,
			s,
			o,
			...
	)

Value:

uint8_t la_##v[sizeof(t s o) + (a)];                \
    t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a)

Definition at line 102 of file internal.h.

#define LOCAL_ALIGNED_D	(		a,
			t,
			v,
			s,
			o,
			...
	)

Value:

DECLARE_ALIGNED(a, t, la_##v) s o;                  \
    t (*v) o = la_##v

Definition at line 106 of file internal.h.

#define LOCAL_ALIGNED	(		a,
			t,
			v,
			...
	)		E1(LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,))

Definition at line 110 of file internal.h.

Referenced by checkasm_check_fmtconvert(), checkasm_check_synth_filter(), do_hybrid_window(), encode_slice_plane(), ff_atrac3p_ipqf(), ff_h264_filter_mb(), ff_hevc_luma_mv_merge_mode(), ff_lpc_calc_coefs(), ff_prores_idct_wrap(), filter_mb_dir(), h264_filter_mb_fast_internal(), intra_predict(), main(), test_butterflies_float(), test_vector_dmul_scalar(), test_vector_fmac_scalar(), test_vector_fmul(), test_vector_fmul_add(), test_vector_fmul_reverse(), test_vector_fmul_scalar(), and test_vector_fmul_window().

#define LOCAL_ALIGNED_8	(		t,
			v,
			...
	)		LOCAL_ALIGNED(8, t, v, __VA_ARGS__)

Definition at line 115 of file internal.h.

Referenced by apply_obmc(), and dv_encode_video_segment().

#define LOCAL_ALIGNED_16	(		t,
			v,
			...
	)		LOCAL_ALIGNED(16, t, v, __VA_ARGS__)

Definition at line 121 of file internal.h.

Referenced by apply_channel_coupling(), bink_decode_plane(), binkb_decode_plane(), bit8x8_c(), check_append_extra_bits(), check_decorrelate_stereo(), check_idct(), checkasm_check_bswapdsp(), checkasm_check_flacdsp(), checkasm_check_h264pred(), checkasm_check_h264qpel(), checkasm_check_pixblockdsp(), count_mantissa_bits(), dct_max8x8_c(), dct_quantize_refine(), dct_quantize_TMPL(), dct_sad8x8_c(), decode_slice_alpha(), decode_slice_chroma(), decode_slice_luma(), decorrelation(), dnxhd_calc_bits_thread(), dv_decode_video_segment(), dv_init_enc_block(), ff_check_alignment(), h263_skip_b_part(), hybrid6_cx(), imc_decode_frame(), mpc7_decode_init(), quant_psnr8x8_c(), rd8x8_c(), rv34_decode_inter_macroblock(), rv34_output_i16x16(), sbr_hf_assemble(), sbr_hf_inverse_filter(), and stereo_processing().

#define LOCAL_ALIGNED_32	(		t,
			v,
			...
	)		LOCAL_ALIGNED(32, t, v, __VA_ARGS__)

Definition at line 127 of file internal.h.

Referenced by check_ipred(), check_itxfm(), check_loopfilter(), check_mc(), check_multiply3x3(), check_rgb2yuv(), check_yuv2rgb(), check_yuv2yuv(), checkasm_check_jpeg2000dsp(), intra_recon(), sub_qmf32_fixed_c(), sub_qmf32_float_c(), sub_qmf64_fixed_c(), sub_qmf64_float_c(), and transform_channel().

#define FF_ALLOC_OR_GOTO	(		ctx,
			p,
			size,
			label
	)

Value:

{\
    p = av_malloc(size);\
    if (!(p) && (size) != 0) {\
        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
        goto label;\
    }\
}

Definition at line 130 of file internal.h.

Referenced by adpcm_encode_frame(), adpcm_encode_init(), allocate_buffers(), allocate_sample_buffers(), ape_decode_init(), ff_h264_slice_context_init(), ff_iir_filter_init_coeffs(), ff_snow_common_init_after_header(), init_context_frame(), and sws_init_context().

#define FF_ALLOCZ_OR_GOTO	(		ctx,
			p,
			size,
			label
	)

Value:

{\
    p = av_mallocz(size);\
    if (!(p) && (size) != 0) {\
        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
        goto label;\
    }\
}

Definition at line 139 of file internal.h.

Referenced by alloc_buffers(), allocate_sample_buffers(), dnxhd_encode_init(), dnxhd_init_vlc(), ff_h264_alloc_tables(), ff_h264_slice_context_init(), ff_iir_filter_init_coeffs(), ff_mpv_common_init(), ff_mpv_encode_init(), init_context_frame(), init_duplicate_context(), and sws_init_context().

#define FF_ALLOC_ARRAY_OR_GOTO	(		ctx,
			p,
			nelem,
			elsize,
			label
	)

Value:

{\
    p = av_malloc_array(nelem, elsize);\
    if (!p) {\
        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
        goto label;\
    }\
}

Definition at line 148 of file internal.h.

Referenced by adpcm_encode_frame(), allocate_buffers(), allocate_sample_buffers(), init_mdct_win(), initFilter(), and mca().

#define FF_ALLOCZ_ARRAY_OR_GOTO	(		ctx,
			p,
			nelem,
			elsize,
			label
	)

Value:

{\
    p = av_mallocz_array(nelem, elsize);\
    if (!p) {\
        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
        goto label;\
    }\
}

Definition at line 157 of file internal.h.

Referenced by alloc_buffers(), allocate_buffers(), dnxhd_init_qmat(), dnxhd_init_rc(), dnxhd_init_vlc(), ff_h264_alloc_tables(), ff_mpeg_framesize_alloc(), ff_snow_common_init_after_header(), initFilter(), and mca().

#define NULL_IF_CONFIG_SMALL

(

x

)

x

Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.

Used to disable the definition of strings (for example AVCodec long_names).

Definition at line 176 of file internal.h.

Referenced by mpeg12_class().

#define ONLY_IF_THREADS_ENABLED

(

x

)

NULL

Define a function with only the non-default version specified.

On systems with ELF shared libraries, all symbols exported from FFmpeg libraries are tagged with the name and major version of the library to which they belong. If a function is moved from one library to another, a wrapper must be retained in the original location to preserve binary compatibility.

Functions defined with this macro will never be used to resolve symbols by the build-time linker.

Parameters

type	return type of function
name	name of function
args	argument list of function
ver	version tag to assign function Return NULL if a threading library has not been enabled. Used to disable threading functions in AVCodec definitions when not needed.

Definition at line 215 of file internal.h.

#define PTRDIFF_SPECIFIER   "td"

Definition at line 251 of file internal.h.

Referenced by decode_cblk(), decode_chunks(), decode_slice(), encode_dvd_subtitles(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_sps(), ff_hevc_decode_nal_vps(), ff_mjpeg_decode_frame(), ff_mjpeg_find_marker(), ff_vorbis_comment(), flac_parse(), load_input_picture(), parse_packed_headers(), revert_channel_correlation(), wma_decode_superframe(), zmbv_decode_xor_16(), zmbv_decode_xor_32(), and zmbv_decode_xor_8().

#define SIZE_SPECIFIER   "zu"

Definition at line 252 of file internal.h.

Referenced by ape_read_header(), dump_enc_cfg(), epic_jb_decode_tile(), ff_h264_decode_picture_parameter_set(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_sps(), ff_hevc_decode_nal_vps(), get_http_header_data(), get_tcp_server_response(), hq_decode_frame(), hqa_decode_frame(), http_write_reply(), jpeg2000_decode_packet(), mov_seek_auxiliary_info(), parse_multipart_header(), queue_frames(), read_data_packet(), read_geobtag(), vpx_init(), and x8_vlc_init().

#define ff_dlog	(		ctx,
			...
	)		do { if (0) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)

Definition at line 258 of file internal.h.

Function Documentation

void avpriv_report_missing_feature	(	void *	avc,
		const char *	msg,
			...
	)

Log a generic warning message about a missing feature.

Parameters

[in]	avc	a pointer to an arbitrary struct of which the first field is a pointer to an AVClass struct
[in]	msg	string containing the name of the missing feature

Referenced by aac_adtstoasc_filter(), amr_decode_fix_avctx(), amrnb_decode_frame(), amrnb_decode_init(), amrwb_decode_init(), atrac3p_decode_frame(), cfhd_decode(), cpia_decode_frame(), decode_audio_specific_config(), decode_block(), decode_eld_specific_config(), decode_frame(), decode_ga_specific_config(), decode_gop_header(), decode_group3_2d_line(), decode_header(), decode_init(), decode_seq_header(), decode_subframe(), decode_tones_info(), dnxhd_encode_init(), dxv_decode(), ff_get_wav_header(), ff_ivi_decode_frame(), ff_jpegls_decode_picture(), ff_mjpeg_decode_sof(), ff_rtp_send_vc2hq(), ff_rv10_encode_picture_header(), ff_spdif_read_packet(), ff_vc1_parse_frame_header_adv(), g2m_load_cursor(), h264_handle_packet(), handle_id3(), hevc_handle_packet(), mpegaudio_parse(), ogg_replace_stream(), old_codec37(), old_codec47(), parse_adts_frame_header(), parse_decoder_init(), parse_MP4SLDescrTag(), qdm2_decode_init(), read_frame_header(), read_header(), read_sbr_extension(), rpl_read_header(), rso_read_header(), set_option(), tiff_decode_tag(), vp6_parse_header(), vp9_handle_packet(), vqa_decode_init(), xcbgrab_read_header(), and xwd_decode_frame().

void void avpriv_request_sample	(	void *	avc,
		const char *	msg,
			...
	)

Log a generic warning message about a missing feature.

Additionally request that a sample showcasing the feature be uploaded.

Parameters

[in]	avc	a pointer to an arbitrary struct of which the first field is a pointer to an AVClass struct
[in]	msg	string containing the name of the missing feature

Referenced by aac_decode_er_frame(), alac_decode_init(), amrwb_decode_frame(), ape_decode_init(), apng_read_packet(), asf_get_packet(), ast_read_header(), avi_extract_stream_metadata(), avr_read_header(), cdxl_decode_frame(), chs_parse_header(), cine_read_header(), cinepak_decode(), compute_band_indexes(), cook_decode_init(), dcstr_read_header(), decode_audio_block(), decode_band_hdr(), decode_bytes(), decode_cdlms(), decode_channel_transform(), decode_eld_specific_config(), decode_element(), decode_frame(), decode_frame_headers(), decode_ga_specific_config(), decode_ics(), decode_idat_chunk(), decode_init(), decode_mvc2(), decode_nal_units(), decode_nop(), decode_packet(), decode_scalefactors(), decode_sgirle8(), decode_subframe(), decode_wmv9(), decode_yuv_frame(), determine_bitrate(), dnxhd_decode_header(), dsf_read_header(), dss_read_header(), dxva2_mpeg2_decode_slice(), ea_read_packet(), encode_frame(), epaf_read_header(), execute_code(), exif_add_metadata(), ff_adx_decode_header(), ff_dca_exss_parse(), ff_eac3_parse_header(), ff_get_wav_header(), ff_h264_decode_seq_parameter_set(), ff_hevc_parse_sps(), ff_jpegls_decode_lse(), ff_mjpeg_decode_sof(), ff_opus_parse_extradata(), ff_parse_mpeg2_descriptor(), ff_spdif_read_packet(), fill_coding_method_array(), flashsv_decode_frame(), flic_decode_init(), flv_read_packet(), flv_set_audio_codec(), flv_set_video_codec(), fsb_read_header(), g2m_decode_frame(), genh_read_header(), get_aiff_header(), get_edit_list_entry(), get_packet_header(), get_poc(), get_siz(), h264_field_start(), handle_p_frame_apng(), hq_decode_frame(), iff_read_header(), imc_decode_init(), jp2_find_codestream(), jpeg2000_decode_packet(), jpeg2000_decode_packets_po_iteration(), lag_decode_zero_run_line(), latm_decode_audio_specific_config(), load_buffer(), lvf_read_header(), m101_decode_init(), magy_decode_frame(), magy_decode_slice(), mimic_decode_frame(), mov_build_index(), mov_read_mdhd(), mov_read_sidx(), mpc7_decode_init(), mpc8_decode_init(), msf_read_header(), msrle_decode_pal4(), mtv_read_header(), musx_read_header(), mv_read_header(), mxf_parse_structural_metadata(), mxf_read_packet_old(), mxf_read_primer_pack(), nist_read_header(), oma_read_header(), on2avc_decode_init(), output_configure(), paf_video_decode(), parse_coding_header(), parse_common_header(), parse_dsd_prop(), parse_fmtp(), parse_setup_header(), parse_video_var(), parse_xxch_frame(), pix_decode_frame(), process_audio_header_eacs(), process_audio_header_elements(), process_ea_header(), process_frame_obj(), ptx_decode_frame(), qdm2_decode_init(), qt_rtp_parse_packet(), read_block_data(), read_frame(), read_header(), read_major_sync(), read_restart_header(), read_sbr_extension(), read_stream_mux_config(), read_table(), rm_read_audio_stream_info(), rm_read_multi(), rpl_read_header(), rsd_read_header(), rso_read_header(), rv10_decode_init(), rv10_decode_picture_header(), save_bits(), save_subtitle_set(), scan_file(), smc_decode_stream(), smjpeg_read_header(), spdif_get_offset_and_codec(), spdif_header_dts(), spdif_header_truehd(), sunrast_decode_frame(), svq3_decode_frame(), synth_superframe(), tdsc_load_cursor(), tdsc_parse_dtsm(), threedostr_read_header(), tm2_read_header(), truemotion1_decode_header(), truespeech_decode_init(), unsupported(), update_odml_entry(), vc1_decode_init(), vcr1_decode_init(), vp7_decode_frame_header(), vp8_decode_frame_header(), vqa_decode_init(), wsaud_read_header(), wsd_read_header(), wsd_to_av_channel_layoyt(), xa_decode(), xan_wc3_copy_pixel_run(), xmv_read_header(), xvag_read_header(), xwd_decode_frame(), xwma_read_header(), and zero12v_decode_init().

static av_always_inline av_const int64_t ff_rint64_clip ( double  a, int64_t  amin, int64_t  amax  )

static

Clip and convert a double value into the long long amin-amax range.

This function is needed because conversion of floating point to integers when it does not fit in the integer's representation does not necessarily saturate correctly (usually converted to a cvttsd2si on x86) which saturates numbers

INT64_MAX to INT64_MIN. The standard marks such conversions as undefined

behavior, allowing this sort of mathematically bogus conversions. This provides a safe alternative that is slower obviously but assures safety and better mathematical behavior.

Parameters

a	value to clip
amin	minimum value of the clip range
amax	maximum value of the clip range

Returns

clipped value

Definition at line 275 of file internal.h.

av_warn_unused_result int avpriv_open	(	const char *	filename,
		int	flags,
			...
	)

A wrapper for open() setting O_CLOEXEC.

Definition at line 66 of file file_open.c.

Referenced by av_file_map(), av_fopen_utf8(), bktr_init(), dv1394_read_header(), fbdev_read_header(), fbdev_write_header(), ff_fbdev_get_device_list(), ff_oss_audio_open(), and read_random().

int avpriv_tempfile	(	const char *	prefix,
		char **	filename,
		int	log_offset,
		void *	log_ctx
	)

Wrapper to work around the lack of mkstemp() on mingw.

Also, tries to create file in /tmp first, if possible. *prefix can be a character constant; *filename will be allocated internally.

Returns

file descriptor of opened file (or negative value corresponding to an AVERROR code on error) and opened file name in **filename.

Note

On very old libcs it is necessary to set a secure umask before calling this, av_tempfile() can't call umask itself as it is used in libraries and could interfere with the calling application.

Definition at line 106 of file file_open.c.

Referenced by av_tempfile(), cache_open(), ff_xvid_rate_control_init(), and xvid_encode_init().

int avpriv_set_systematic_pal2	(	uint32_t	pal[256],
		enum AVPixelFormat	pix_fmt
	)

Definition at line 151 of file imgutils.c.

Referenced by av_image_alloc(), bmp_encode_frame(), ff_video_frame_pool_get(), filter_frame(), gif_encode_init(), gif_write_header(), pcx_encode_frame(), raw_init_decoder(), and video_get_buffer().

static av_always_inline av_const int avpriv_mirror ( int  x, int  w  )

static

Definition at line 318 of file internal.h.

Referenced by avfilter_transform(), blur(), compose(), decompose(), spatial_compose53i_buffered_init(), spatial_compose53i_dy(), spatial_compose53i_dy_buffered(), spatial_compose53i_init(), spatial_compose53i_init_TMPL(), spatial_compose97i_buffered_init(), spatial_compose97i_dy(), spatial_compose97i_dy_buffered(), spatial_compose97i_init(), spatial_compose97i_init_TMPL(), spatial_compose_daub97i_dy_TMPL(), spatial_compose_dirac53i_dy_TMPL(), spatial_decompose53i(), and spatial_decompose97i().

void ff_check_pixfmt_descriptors

(

void

)

Definition at line 2321 of file pixdesc.c.

Referenced by main().

int avpriv_dict_set_timestamp	(	AVDictionary **	dict,
		const char *	key,
		int64_t	timestamp
	)

Set a dictionary value to an ISO-8601 compliant timestamp string.

Parameters

s	AVFormatContext
key	metadata key
timestamp	unix timestamp in microseconds

Returns

<0 on error

Definition at line 258 of file dict.c.

Referenced by ff_standardize_creation_time(), matroska_metadata_creation_time(), and mov_metadata_creation_time().

Variable Documentation

const uint8_t ff_reverse[256]

Definition at line 23 of file reverse.c.

Referenced by asv2_get_bits(), asv2_put_bits(), bitswap_32(), decode_frame(), deinvert_buffer(), encode_frame(), eval_expr(), ff_dsd2pcm_translate(), fft(), inv_bits(), ir2_decode_frame(), pcm_decode_frame(), pcm_encode_frame(), prob_dst_x_bit(), s302m_decode_frame(), s302m_encode2_frame(), tiff_unpack_fax(), tiff_unpack_strip(), webp_get_vlc(), wnv1_get_code(), xbm_decode_frame(), and xbm_encode_frame().