FFmpeg
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utils. More...
#include "config.h"
#include "libavutil/atomic.h"
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/frame.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/dict.h"
#include "avcodec.h"
#include "dsputil.h"
#include "libavutil/opt.h"
#include "thread.h"
#include "frame_thread_encoder.h"
#include "internal.h"
#include "bytestream.h"
#include "version.h"
#include <stdlib.h>
#include <stdarg.h>
#include <limits.h>
#include <float.h>
Go to the source code of this file.
Macros | |
#define | STRIDE_ALIGN 16 |
#define | UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */ |
#define | TAG_PRINT(x) |
#define | LICENSE_PREFIX "libavcodec license: " |
Functions | |
void * | av_fast_realloc (void *ptr, unsigned int *size, size_t min_size) |
Reallocate the given block if it is not large enough, otherwise do nothing. | |
static int | ff_fast_malloc (void *ptr, unsigned int *size, size_t min_size, int zero_realloc) |
void | av_fast_malloc (void *ptr, unsigned int *size, size_t min_size) |
Allocate a buffer, reusing the given one if large enough. | |
void | av_fast_padded_malloc (void *ptr, unsigned int *size, size_t min_size) |
Same behaviour av_fast_malloc but the buffer has additional FF_INPUT_BUFFER_PADDING_SIZE at the end which will always be 0. | |
void | av_fast_padded_mallocz (void *ptr, unsigned int *size, size_t min_size) |
Same behaviour av_fast_padded_malloc except that buffer will always be 0-initialized after call. | |
AVCodec * | av_codec_next (const AVCodec *c) |
If c is NULL, returns the first registered codec, if c is non-NULL, returns the next registered codec after c, or NULL if c is the last one. | |
static av_cold void | avcodec_init (void) |
int | av_codec_is_encoder (const AVCodec *codec) |
int | av_codec_is_decoder (const AVCodec *codec) |
av_cold void | avcodec_register (AVCodec *codec) |
Register the codec codec and initialize libavcodec. | |
unsigned | avcodec_get_edge_width (void) |
Return the amount of padding in pixels which the get_buffer callback must provide around the edge of the image for codecs which do not have the CODEC_FLAG_EMU_EDGE flag. | |
void | avcodec_set_dimensions (AVCodecContext *s, int width, int height) |
void | avcodec_align_dimensions2 (AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS]) |
Modify width and height values so that they will result in a memory buffer that is acceptable for the codec if you also ensure that all line sizes are a multiple of the respective linesize_align[i]. | |
void | avcodec_align_dimensions (AVCodecContext *s, int *width, int *height) |
Modify width and height values so that they will result in a memory buffer that is acceptable for the codec if you do not use any horizontal padding. | |
int | avcodec_enum_to_chroma_pos (int *xpos, int *ypos, enum AVChromaLocation pos) |
Converts AVChromaLocation to swscale x/y chroma position. | |
enum AVChromaLocation | avcodec_chroma_pos_to_enum (int xpos, int ypos) |
Converts swscale x/y chroma position to AVChromaLocation. | |
int | avcodec_fill_audio_frame (AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align) |
Fill AVFrame audio data and linesize pointers. | |
static int | update_frame_pool (AVCodecContext *avctx, AVFrame *frame) |
static int | audio_get_buffer (AVCodecContext *avctx, AVFrame *frame) |
static int | video_get_buffer (AVCodecContext *s, AVFrame *pic) |
void | avpriv_color_frame (AVFrame *frame, const int c[4]) |
int | avcodec_default_get_buffer2 (AVCodecContext *avctx, AVFrame *frame, int flags) |
The default callback for AVCodecContext.get_buffer2(). | |
int | ff_init_buffer_info (AVCodecContext *avctx, AVFrame *frame) |
does needed setup of pkt_pts/pos and such for (re)get_buffer(); | |
static int | get_buffer_internal (AVCodecContext *avctx, AVFrame *frame, int flags) |
int | ff_get_buffer (AVCodecContext *avctx, AVFrame *frame, int flags) |
Get a buffer for a frame. | |
static int | reget_buffer_internal (AVCodecContext *avctx, AVFrame *frame) |
int | ff_reget_buffer (AVCodecContext *avctx, AVFrame *frame) |
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buffer when needed. | |
int | avcodec_default_execute (AVCodecContext *c, int(*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size) |
int | avcodec_default_execute2 (AVCodecContext *c, int(*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count) |
static int | is_hwaccel_pix_fmt (enum AVPixelFormat pix_fmt) |
enum AVPixelFormat | avcodec_default_get_format (struct AVCodecContext *s, const enum AVPixelFormat *fmt) |
void | avcodec_get_frame_defaults (AVFrame *frame) |
Set the fields of the given AVFrame to default values. | |
AVFrame * | avcodec_alloc_frame (void) |
Allocate an AVFrame and set its fields to default values. | |
void | avcodec_free_frame (AVFrame **frame) |
Free the frame and any dynamically allocated objects in it, e.g. | |
int | av_codec_get_max_lowres (const AVCodec *codec) |
static void | avcodec_get_subtitle_defaults (AVSubtitle *sub) |
static int | get_bit_rate (AVCodecContext *ctx) |
int attribute_align_arg | 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 attribute_align_arg | avcodec_open2 (AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) |
Initialize the AVCodecContext to use the given AVCodec. | |
int | ff_alloc_packet2 (AVCodecContext *avctx, AVPacket *avpkt, int64_t size) |
Check AVPacket size and/or allocate data. | |
int | ff_alloc_packet (AVPacket *avpkt, int size) |
static int | pad_last_frame (AVCodecContext *s, AVFrame **dst, const AVFrame *src) |
Pad last frame with silence. | |
int attribute_align_arg | avcodec_encode_audio2 (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr) |
Encode a frame of audio. | |
int attribute_align_arg | avcodec_encode_video2 (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr) |
Encode a frame of video. | |
int | avcodec_encode_subtitle (AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub) |
static int64_t | guess_correct_pts (AVCodecContext *ctx, int64_t reordered_pts, int64_t dts) |
Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect times. | |
static void | apply_param_change (AVCodecContext *avctx, AVPacket *avpkt) |
static int | add_metadata_from_side_data (AVCodecContext *avctx, AVFrame *frame) |
int attribute_align_arg | avcodec_decode_video2 (AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const AVPacket *avpkt) |
Decode the video frame of size avpkt->size from avpkt->data into picture. | |
int attribute_align_arg | avcodec_decode_audio4 (AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt) |
Decode the audio frame of size avpkt->size from avpkt->data into frame. | |
static int | recode_subtitle (AVCodecContext *avctx, AVPacket *outpkt, const AVPacket *inpkt) |
static int | utf8_check (const uint8_t *str) |
int | avcodec_decode_subtitle2 (AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt) |
Decode a subtitle message. | |
void | avsubtitle_free (AVSubtitle *sub) |
Free all allocated data in the given subtitle struct. | |
av_cold int | ff_codec_close_recursive (AVCodecContext *avctx) |
Call avcodec_close recursively, counterpart to avcodec_open2_recursive. | |
av_cold int | avcodec_close (AVCodecContext *avctx) |
Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext itself). | |
static enum AVCodecID | remap_deprecated_codec_id (enum AVCodecID id) |
static AVCodec * | find_encdec (enum AVCodecID id, int encoder) |
AVCodec * | avcodec_find_encoder (enum AVCodecID id) |
Find a registered encoder with a matching codec ID. | |
AVCodec * | avcodec_find_encoder_by_name (const char *name) |
Find a registered encoder with the specified name. | |
AVCodec * | avcodec_find_decoder (enum AVCodecID id) |
Find a registered decoder with a matching codec ID. | |
AVCodec * | avcodec_find_decoder_by_name (const char *name) |
Find a registered decoder with the specified name. | |
const char * | avcodec_get_name (enum AVCodecID id) |
Get the name of a codec. | |
size_t | av_get_codec_tag_string (char *buf, size_t buf_size, unsigned int codec_tag) |
Put a string representing the codec tag codec_tag in buf. | |
void | avcodec_string (char *buf, int buf_size, AVCodecContext *enc, int encode) |
const char * | av_get_profile_name (const AVCodec *codec, int profile) |
Return a name for the specified profile, if available. | |
unsigned | avcodec_version (void) |
Return the LIBAVCODEC_VERSION_INT constant. | |
const char * | avcodec_configuration (void) |
Return the libavcodec build-time configuration. | |
const char * | avcodec_license (void) |
Return the libavcodec license. | |
void | avcodec_flush_buffers (AVCodecContext *avctx) |
Reset the internal decoder state / flush internal buffers. | |
int | av_get_exact_bits_per_sample (enum AVCodecID codec_id) |
Return codec bits per sample. | |
enum AVCodecID | av_get_pcm_codec (enum AVSampleFormat fmt, int be) |
Return the PCM codec associated with a sample format. | |
int | av_get_bits_per_sample (enum AVCodecID codec_id) |
Return codec bits per sample. | |
int | av_get_audio_frame_duration (AVCodecContext *avctx, int frame_bytes) |
Return audio frame duration. | |
int | ff_thread_init (AVCodecContext *s) |
unsigned int | av_xiphlacing (unsigned char *s, unsigned int v) |
Encode extradata length to a buffer. | |
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. | |
void | av_register_hwaccel (AVHWAccel *hwaccel) |
Register the hardware accelerator hwaccel. | |
AVHWAccel * | av_hwaccel_next (AVHWAccel *hwaccel) |
If hwaccel is NULL, returns the first registered hardware accelerator, if hwaccel is non-NULL, returns the next registered hardware accelerator after hwaccel, or NULL if hwaccel is the last one. | |
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 | av_lockmgr_register (int(*cb)(void **mutex, enum AVLockOp op)) |
Register a user provided lock manager supporting the operations specified by AVLockOp. | |
int | ff_lock_avcodec (AVCodecContext *log_ctx) |
int | ff_unlock_avcodec (void) |
int | avpriv_lock_avformat (void) |
int | avpriv_unlock_avformat (void) |
unsigned int | avpriv_toupper4 (unsigned int x) |
int | ff_thread_ref_frame (ThreadFrame *dst, ThreadFrame *src) |
enum AVPixelFormat | ff_thread_get_format (AVCodecContext *avctx, const enum AVPixelFormat *fmt) |
Wrapper around get_format() for frame-multithreaded codecs. | |
int | ff_thread_get_buffer (AVCodecContext *avctx, ThreadFrame *f, int flags) |
Wrapper around get_buffer() for frame-multithreaded codecs. | |
void | ff_thread_release_buffer (AVCodecContext *avctx, ThreadFrame *f) |
Wrapper around release_buffer() frame-for multithreaded codecs. | |
void | ff_thread_finish_setup (AVCodecContext *avctx) |
If the codec defines update_thread_context(), call this when they are ready for the next thread to start decoding the next frame. | |
void | ff_thread_report_progress (ThreadFrame *f, int progress, int field) |
Notify later decoding threads when part of their reference picture is ready. | |
void | ff_thread_await_progress (ThreadFrame *f, int progress, int field) |
Wait for earlier decoding threads to finish reference pictures. | |
int | ff_thread_can_start_frame (AVCodecContext *avctx) |
int | ff_alloc_entries (AVCodecContext *avctx, int count) |
void | ff_reset_entries (AVCodecContext *avctx) |
void | ff_thread_await_progress2 (AVCodecContext *avctx, int field, int thread, int shift) |
void | ff_thread_report_progress2 (AVCodecContext *avctx, int field, int thread, int n) |
enum AVMediaType | avcodec_get_type (enum AVCodecID codec_id) |
Get the type of the given codec. | |
int | avcodec_is_open (AVCodecContext *s) |
int | avpriv_bprint_to_extradata (AVCodecContext *avctx, struct AVBPrint *buf) |
Finalize buf into extradata and set its size appropriately. | |
const uint8_t * | avpriv_find_start_code (const uint8_t *av_restrict p, const uint8_t *end, uint32_t *av_restrict state) |
Variables | |
static int(* | lockmgr_cb )(void **mutex, enum AVLockOp op) = NULL |
volatile int | ff_avcodec_locked |
static int volatile | entangled_thread_counter = 0 |
static void * | codec_mutex |
static void * | avformat_mutex |
static AVCodec * | first_avcodec = NULL |
static AVHWAccel * | first_hwaccel = NULL |
utils.
Definition in file utils.c.
#define STRIDE_ALIGN 16 |
Definition at line 243 of file utils.c.
Referenced by avcodec_align_dimensions2(), and update_frame_pool().
#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */ |
Definition at line 2316 of file utils.c.
Referenced by recode_subtitle().
#define TAG_PRINT | ( | x | ) |
Referenced by av_get_codec_tag_string().
#define LICENSE_PREFIX "libavcodec license: " |
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inlinestatic |
Definition at line 139 of file utils.c.
Referenced by av_fast_malloc(), av_fast_padded_malloc(), and av_fast_padded_mallocz().
Definition at line 193 of file utils.c.
Referenced by avcodec_register().
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Definition at line 468 of file utils.c.
Referenced by avcodec_default_get_buffer2().
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Definition at line 572 of file utils.c.
Referenced by avcodec_default_get_buffer2().
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Definition at line 617 of file utils.c.
Referenced by avcodec_default_get_buffer2().
Definition at line 671 of file utils.c.
Referenced by h264_frame_start().
int ff_init_buffer_info | ( | AVCodecContext * | avctx, |
AVFrame * | frame | ||
) |
does needed setup of pkt_pts/pos and such for (re)get_buffer();
Definition at line 717 of file utils.c.
Referenced by get_buffer_internal(), reget_buffer_internal(), and thread_get_buffer_internal().
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Definition at line 802 of file utils.c.
Referenced by 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 942 of file utils.c.
Referenced by ac3_decode_frame(), adpcm_decode_frame(), adx_decode_frame(), aic_decode_frame(), amrnb_decode_frame(), amrwb_decode_frame(), ape_decode_frame(), atrac1_decode_frame(), atrac3_decode_frame(), aura_decode_frame(), 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_frame(), decode_p_frame(), decode_pic(), decode_tag(), decode_thread(), dfa_decode_frame(), dirac_decode_data_unit(), dirac_decode_picture_header(), dpcm_decode_frame(), dvvideo_decode_frame(), dxtory_decode_v1(), dxtory_decode_v2(), eightsvx_decode_frame(), encode_init(), escape124_decode_frame(), escape130_decode_frame(), evrc_decode_frame(), execute_code(), fdk_aac_decode_frame(), 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_twinvq_decode_frame(), ff_vp56_decode_frame(), frame_configure_elements(), g2m_decode_frame(), g722_decode_frame(), g723_1_decode_frame(), get_buffer(), gif_decode_frame(), gsm_decode_frame(), hls_slice_header(), idcin_decode_frame(), ilbc_decode_frame(), imc_decode_frame(), 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(), pcm_dvd_decode_frame(), pcx_decode_frame(), pnm_decode_frame(), ptx_decode_frame(), qcelp_decode_frame(), qdm2_decode_frame(), ra144_decode_frame(), ra288_decode_frame(), reget_buffer_internal(), 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(), tgq_decode_frame(), tgv_decode_frame(), thread_get_buffer_internal(), tmv_decode_frame(), tqi_decode_frame(), truespeech_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(), vp8_decode(), vp9_decode_frame(), vqa_decode_frame(), wavesynth_decode(), 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(), yuv4_decode_frame(), zero12v_decode_frame(), and zerocodec_decode_frame().
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Definition at line 950 of file utils.c.
Referenced by ff_reget_buffer().
int ff_reget_buffer | ( | AVCodecContext * | avctx, |
AVFrame * | frame | ||
) |
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buffer when needed.
Definition at line 987 of file utils.c.
Referenced by aasc_decode_frame(), avs_decode_frame(), bethsoftvid_decode_frame(), cdg_decode_frame(), cinepak_decode_frame(), cinvideo_decode_frame(), cpia_decode_frame(), decode_frame(), flashsv_decode_frame(), flic_decode_frame_15_16BPP(), 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(), mvc_decode_frame(), paf_vid_decode(), qtrle_decode_frame(), roq_decode_frame(), rpza_decode_frame(), seqvideo_decode_frame(), sgirle_decode_frame(), smc_decode_frame(), truemotion1_decode_frame(), tscc2_decode_frame(), ulti_decode_frame(), xan_decode_frame(), and yop_decode_frame().
int avcodec_default_execute2 | ( | AVCodecContext * | c, |
int(*)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr) | func, | ||
void * | arg, | ||
int * | ret, | ||
int | count | ||
) |
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Definition at line 1034 of file utils.c.
Referenced by avcodec_default_get_format().
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Definition at line 1102 of file utils.c.
Referenced by avcodec_decode_subtitle2().
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Definition at line 1108 of file utils.c.
Referenced by avcodec_open2(), and avcodec_string().
int attribute_align_arg 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 1138 of file utils.c.
Referenced by smvjpeg_decode_init().
int ff_alloc_packet2 | ( | AVCodecContext * | avctx, |
AVPacket * | avpkt, | ||
int64_t | 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.
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 |
Definition at line 1493 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(), libshine_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(), s302m_encode2_frame(), storeframe(), sunrast_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(), wavpack_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 1545 of file utils.c.
Referenced by cng_encode_frame().
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Pad last frame with silence.
Definition at line 1553 of file utils.c.
Referenced by avcodec_encode_audio2().
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Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect times.
Input timestamps may wrap around, in which case the output will as well.
pts | the pts field of the decoded AVPacket, as passed through AVFrame.pkt_pts |
dts | the dts field of the decoded AVPacket |
Definition at line 1934 of file utils.c.
Referenced by avcodec_decode_audio4(), and avcodec_decode_video2().
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Definition at line 1956 of file utils.c.
Referenced by avcodec_decode_audio4(), and avcodec_decode_video2().
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Definition at line 1998 of file utils.c.
Referenced by avcodec_decode_audio4(), and avcodec_decode_video2().
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Definition at line 2317 of file utils.c.
Referenced by avcodec_decode_subtitle2().
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Definition at line 2374 of file utils.c.
Referenced by avcodec_decode_subtitle2().
av_cold int ff_codec_close_recursive | ( | AVCodecContext * | avctx | ) |
Call avcodec_close recursively, counterpart to avcodec_open2_recursive.
Definition at line 2506 of file utils.c.
Referenced by smvjpeg_decode_end().
Definition at line 2566 of file utils.c.
Referenced by find_encdec().
Definition at line 2583 of file utils.c.
Referenced by avcodec_find_decoder(), and avcodec_find_encoder().
int ff_thread_init | ( | AVCodecContext * | s | ) |
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 3146 of file utils.c.
Referenced by ff_h263_encode_picture_header(), ff_MPV_encode_init(), and svq1_write_header().
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.
codec_id | the codec to match |
pix_fmt | the pixel format to match |
Definition at line 3197 of file utils.c.
Referenced by ff_h263_decode_init(), h264_slice_header_init(), setup_hwaccel_for_pixfmt(), and vc1_decode_init().
int ff_lock_avcodec | ( | AVCodecContext * | log_ctx | ) |
Definition at line 3228 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 3248 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 3260 of file utils.c.
Referenced by avisynth_read_close(), avisynth_read_header(), ff_tls_deinit(), and ff_tls_init().
int avpriv_unlock_avformat | ( | void | ) |
Definition at line 3269 of file utils.c.
Referenced by avisynth_read_close(), avisynth_read_header(), ff_tls_deinit(), and ff_tls_init().
unsigned int avpriv_toupper4 | ( | unsigned int | x | ) |
Definition at line 3278 of file utils.c.
Referenced by ff_codec_get_id(), ff_MPV_common_init(), mpeg_decode_frame(), and validate_codec_tag().
int ff_thread_ref_frame | ( | ThreadFrame * | dst, |
ThreadFrame * | src | ||
) |
Definition at line 3286 of file utils.c.
Referenced by ff_mpeg_ref_picture(), hevc_ref_frame(), mimic_decode_update_thread_context(), ref_frame(), ref_picture(), update_frames(), update_thread_context(), and vp8_ref_frame().
enum AVPixelFormat ff_thread_get_format | ( | AVCodecContext * | avctx, |
const enum AVPixelFormat * | fmt | ||
) |
Wrapper around get_format() for frame-multithreaded codecs.
Call this function instead of avctx->get_format(). Cannot be called after the codec has called ff_thread_finish_setup().
avctx | The current context. |
fmt | The list of available formats. |
int ff_thread_get_buffer | ( | AVCodecContext * | avctx, |
ThreadFrame * | f, | ||
int | flags | ||
) |
Wrapper around get_buffer() for frame-multithreaded codecs.
Call this function instead of ff_get_buffer(f). Cannot be called after the codec has called ff_thread_finish_setup().
avctx | The current context. |
f | The frame to write into. |
void ff_thread_release_buffer | ( | AVCodecContext * | avctx, |
ThreadFrame * | f | ||
) |
Wrapper around release_buffer() frame-for multithreaded codecs.
Call this function instead of avctx->release_buffer(f). The AVFrame will be copied and the actual release_buffer() call will be performed later. The contents of data pointed to by the AVFrame should not be changed until ff_thread_get_buffer() is called on it.
avctx | The current context. |
f | The picture being released. |
void ff_thread_finish_setup | ( | AVCodecContext * | avctx | ) |
If the codec defines update_thread_context(), call this when they are ready for the next thread to start decoding the next frame.
After calling it, do not change any variables read by the update_thread_context() method, or call ff_thread_get_buffer().
avctx | The context. |
void ff_thread_report_progress | ( | ThreadFrame * | f, |
int | progress, | ||
int | field | ||
) |
Notify later decoding threads when part of their reference picture is ready.
Call this when some part of the picture is finished decoding. Later calls with lower values of progress have no effect.
f | The picture being decoded. |
progress | Value, in arbitrary units, of how much of the picture has decoded. |
field | The field being decoded, for field-picture codecs. 0 for top field or frame pictures, 1 for bottom field. |
void ff_thread_await_progress | ( | ThreadFrame * | f, |
int | progress, | ||
int | field | ||
) |
Wait for earlier decoding threads to finish reference pictures.
Call this before accessing some part of a picture, with a given value for progress, and it will return after the responsible decoding thread calls ff_thread_report_progress() with the same or higher value for progress.
f | The picture being referenced. |
progress | Value, in arbitrary units, to wait for. |
field | The field being referenced, for field-picture codecs. 0 for top field or frame pictures, 1 for bottom field. |
int ff_thread_can_start_frame | ( | AVCodecContext * | avctx | ) |
Definition at line 3335 of file utils.c.
Referenced by ff_MPV_frame_start(), and h264_frame_start().
int ff_alloc_entries | ( | AVCodecContext * | avctx, |
int | count | ||
) |
void ff_reset_entries | ( | AVCodecContext * | avctx | ) |
void ff_thread_await_progress2 | ( | AVCodecContext * | avctx, |
int | field, | ||
int | thread, | ||
int | shift | ||
) |
void ff_thread_report_progress2 | ( | AVCodecContext * | avctx, |
int | field, | ||
int | thread, | ||
int | n | ||
) |
int avpriv_bprint_to_extradata | ( | AVCodecContext * | avctx, |
struct AVBPrint * | buf | ||
) |
Finalize buf into extradata and set its size appropriately.
Definition at line 3384 of file utils.c.
Referenced by ass_read_header(), dvdsub_init(), jacosub_read_header(), sami_read_header(), and subviewer_read_header().
Definition at line 111 of file utils.c.
Referenced by av_lockmgr_register(), avpriv_lock_avformat(), avpriv_unlock_avformat(), ff_lock_avcodec(), and ff_unlock_avcodec().
|
static |
Definition at line 183 of file utils.c.
Referenced by av_codec_next(), avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), avcodec_register(), and find_encdec().
|
static |
Definition at line 3182 of file utils.c.
Referenced by av_hwaccel_next(), and av_register_hwaccel().