#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "integer.h"
#include "opt.h"
#include "crc.h"
#include <stdarg.h>
#include <limits.h>
#include <float.h>
#include <fcntl.h>
Go to the source code of this file.
Data Structures | |
struct | InternalBuffer |
struct | VideoFrameSizeAbbr |
struct | VideoFrameRateAbbr |
Defines | |
#define | INTERNAL_BUFFER_SIZE 32 |
#define | ALIGN(x, a) (((x)+(a)-1)&~((a)-1)) |
#define | OFFSET(x) offsetof(AVCodecContext,x) |
#define | DEFAULT 0 |
#define | V AV_OPT_FLAG_VIDEO_PARAM |
#define | A AV_OPT_FLAG_AUDIO_PARAM |
#define | S AV_OPT_FLAG_SUBTITLE_PARAM |
#define | E AV_OPT_FLAG_ENCODING_PARAM |
#define | D AV_OPT_FLAG_DECODING_PARAM |
#define | AV_CODEC_DEFAULT_BITRATE 200*1000 |
Functions | |
void * | av_fast_realloc (void *ptr, unsigned int *size, unsigned int min_size) |
Reallocates the given block if it is not large enough, otherwise it does nothing. | |
void * | av_mallocz_static (unsigned int size) |
Allocation of static arrays. | |
void * | ff_realloc_static (void *ptr, unsigned int size) |
Same as av_mallocz_static(), but does a realloc. | |
void | av_free_static (void) |
Frees all static arrays and resets their pointers to 0. | |
static void | do_free (void) |
Call av_free_static automatically before it's too late. | |
AVCodec * | av_codec_next (AVCodec *c) |
void | register_avcodec (AVCodec *format) |
void | avcodec_set_dimensions (AVCodecContext *s, int width, int height) |
void | avcodec_align_dimensions (AVCodecContext *s, int *width, int *height) |
int | avcodec_check_dimensions (void *av_log_ctx, unsigned int w, unsigned int h) |
Checks if the given dimension of a picture is valid, meaning that all bytes of the picture can be addressed with a signed int. | |
int | avcodec_default_get_buffer (AVCodecContext *s, AVFrame *pic) |
void | avcodec_default_release_buffer (AVCodecContext *s, AVFrame *pic) |
int | avcodec_default_reget_buffer (AVCodecContext *s, AVFrame *pic) |
int | avcodec_default_execute (AVCodecContext *c, int(*func)(AVCodecContext *c2, void *arg2), void **arg, int *ret, int count) |
enum PixelFormat | avcodec_default_get_format (struct AVCodecContext *s, const enum PixelFormat *fmt) |
static const char * | context_to_name (void *ptr) |
void | avcodec_get_context_defaults2 (AVCodecContext *s, enum CodecType codec_type) |
THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! we WILL change its arguments and name a few times! | |
AVCodecContext * | avcodec_alloc_context2 (enum CodecType codec_type) |
THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! we WILL change its arguments and name a few times! | |
void | avcodec_get_context_defaults (AVCodecContext *s) |
Sets the fields of the given AVCodecContext to default values. | |
AVCodecContext * | avcodec_alloc_context (void) |
Allocates an AVCodecContext and sets its fields to default values. | |
void | avcodec_get_frame_defaults (AVFrame *pic) |
Sets the fields of the given AVFrame to default values. | |
AVFrame * | avcodec_alloc_frame (void) |
Allocates an AVFrame and sets its fields to default values. | |
int attribute_align_arg | avcodec_open (AVCodecContext *avctx, AVCodec *codec) |
Initializes the AVCodecContext to use the given AVCodec. | |
int attribute_align_arg | avcodec_encode_audio (AVCodecContext *avctx, uint8_t *buf, int buf_size, const short *samples) |
Encodes an audio frame from samples into buf . | |
int attribute_align_arg | avcodec_encode_video (AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVFrame *pict) |
Encodes a video frame from pict into buf . | |
int | avcodec_encode_subtitle (AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub) |
int attribute_align_arg | avcodec_decode_video (AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const uint8_t *buf, int buf_size) |
Decodes a video frame from buf into picture . | |
int attribute_align_arg | avcodec_decode_audio2 (AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, const uint8_t *buf, int buf_size) |
Decodes an audio frame from buf into samples . | |
int | avcodec_decode_audio (AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, const uint8_t *buf, int buf_size) |
int | avcodec_decode_subtitle (AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, const uint8_t *buf, int buf_size) |
int | avcodec_close (AVCodecContext *avctx) |
AVCodec * | avcodec_find_encoder (enum CodecID id) |
Finds a registered encoder with a matching codec ID. | |
AVCodec * | avcodec_find_encoder_by_name (const char *name) |
Finds a registered encoder with the specified name. | |
AVCodec * | avcodec_find_decoder (enum CodecID id) |
Finds a registered decoder with a matching codec ID. | |
AVCodec * | avcodec_find_decoder_by_name (const char *name) |
Finds a registered decoder with the specified name. | |
void | avcodec_string (char *buf, int buf_size, AVCodecContext *enc, int encode) |
unsigned | avcodec_version (void) |
unsigned | avcodec_build (void) |
void | avcodec_init (void) |
Initializes libavcodec. | |
void | avcodec_flush_buffers (AVCodecContext *avctx) |
Flush buffers, should be called when seeking or when switching to a different stream. | |
void | avcodec_default_free_buffers (AVCodecContext *s) |
char | av_get_pict_type_char (int pict_type) |
Returns a single letter to describe the given picture type pict_type . | |
int | av_get_bits_per_sample (enum CodecID codec_id) |
Returns codec bits per sample. | |
int | av_get_bits_per_sample_format (enum SampleFormat sample_fmt) |
Returns sample format bits per sample. | |
int | avcodec_thread_init (AVCodecContext *s, int thread_count) |
unsigned int | av_xiphlacing (unsigned char *s, unsigned int v) |
int | av_tempfile (char *prefix, char **filename) |
int | av_parse_video_frame_size (int *width_ptr, int *height_ptr, const char *str) |
Parses str and put in width_ptr and height_ptr the detected values. | |
int | av_parse_video_frame_rate (AVRational *frame_rate, const char *arg) |
Parses str and put in frame_rate the detected values. | |
Variables | |
const uint8_t | ff_reverse [256] |
static int volatile | entangled_thread_counter = 0 |
static unsigned int | last_static = 0 |
static unsigned int | allocated_static = 0 |
static void ** | array_static = NULL |
AVCodec * | first_avcodec = NULL |
static const AVOption | options [] |
static AVClass | av_codec_context_class = { "AVCodecContext", context_to_name, options } |
static VideoFrameSizeAbbr | video_frame_size_abbrs [] |
static VideoFrameRateAbbr | video_frame_rate_abbrs [] |
#define A AV_OPT_FLAG_AUDIO_PARAM |
Definition at line 427 of file utils.c.
Referenced by av_random_generate_untempered_numbers(), find_and_decode_index(), gmc1_c(), gmc_c(), h263_pred_motion(), horizX1Filter(), idct(), pred_16x8_motion(), pred_8x16_motion(), pred_motion(), predictor_decode_mono(), put_no_rnd_h264_chroma_mc8_c(), rv30_decode_intra_types(), rv34_pred_mv(), rv34_pred_mv_b(), rv40_decode_intra_types(), vc1_pred_b_mv(), vc1_pred_mv(), wmv2_pred_motion(), wv_unpack_mono(), and wv_unpack_stereo().
#define D AV_OPT_FLAG_DECODING_PARAM |
Definition at line 430 of file utils.c.
Referenced by gmc1_c(), gmc_c(), horizX1Filter(), idct(), and put_no_rnd_h264_chroma_mc8_c().
#define INTERNAL_BUFFER_SIZE 32 |
Definition at line 159 of file utils.c.
Referenced by avcodec_default_free_buffers(), and avcodec_default_get_buffer().
#define OFFSET | ( | x | ) | offsetof(AVCodecContext,x) |
#define S AV_OPT_FLAG_SUBTITLE_PARAM |
#define V AV_OPT_FLAG_VIDEO_PARAM |
Definition at line 426 of file utils.c.
Referenced by altivec_uyvy_rgb32(), altivec_yuv2packedX(), decode_frame(), nsv_parse_NSVf_header(), pred16x16_plane_compat_c(), pred8x8_plane_c(), rgb24toyv12_TMPL(), rv34_mc(), rv34_output_macroblock(), tm2_decode_blocks(), tm2_hi_res_block(), tm2_low_res_block(), tm2_med_res_block(), tm2_motion_block(), tm2_null_res_block(), tm2_still_block(), tm2_update_block(), vp6_adjust(), and yuv2packed2_TMPL().
void* av_fast_realloc | ( | void * | ptr, | |
unsigned int * | size, | |||
unsigned int | min_size | |||
) |
Reallocates the given block if it is not large enough, otherwise it does nothing.
Definition at line 62 of file utils.c.
Referenced by allocate_buffers(), av_add_index_entry(), av_mallocz_static(), avcodec_default_get_buffer(), decode_frame(), decode_i_frame(), decode_nal(), decode_p_frame(), ff_combine_frame(), ff_h263_decode_frame(), flac_decode_frame(), output_packet(), read_frame(), and shorten_decode_frame().
void av_free_static | ( | void | ) |
Frees all static arrays and resets their pointers to 0.
Call this function to release all statically allocated tables.
int av_get_bits_per_sample | ( | enum CodecID | codec_id | ) |
Returns codec bits per sample.
[in] | codec_id | the codec |
Definition at line 1300 of file utils.c.
Referenced by av_find_stream_info(), get_aiff_header(), get_audio_frame_size(), mkv_write_tracks(), mov_read_stsd(), mov_write_header(), pcm_decode_frame(), pcm_read_seek(), raw_read_packet(), and voc_get_packet().
int av_get_bits_per_sample_format | ( | enum SampleFormat | sample_fmt | ) |
Returns sample format bits per sample.
[in] | sample_fmt | the sample format |
Definition at line 1336 of file utils.c.
Referenced by mkv_write_tracks().
char av_get_pict_type_char | ( | int | pict_type | ) |
Returns a single letter to describe the given picture type pict_type
.
[in] | pict_type | the picture type |
Definition at line 1288 of file utils.c.
Referenced by decode_mb_cavlc(), decode_slice_header(), do_video_stats(), ff_rate_estimate_qscale(), flv_h263_decode_picture_header(), show_pict_info(), and svq3_decode_frame().
void* av_mallocz_static | ( | unsigned int | size | ) |
Allocation of static arrays.
[in] | size | The amount of memory you need in bytes. |
Definition at line 76 of file utils.c.
Referenced by ff_realloc_static(), init_2d_vlc_rl(), and init_vlc_rl().
int av_parse_video_frame_rate | ( | AVRational * | frame_rate, | |
const char * | str | |||
) |
Parses str
and put in frame_rate
the detected values.
[in] | str | the string to parse: it has to be a string in the format <frame_rate_nom>/<frame_rate_den>, a float number or a valid video rate abbreviation |
[in,out] | frame_rate | pointer to the AVRational which will contain the detected frame rate |
Definition at line 1496 of file utils.c.
Referenced by opt_frame_rate(), and parse_frame_rate().
int av_parse_video_frame_size | ( | int * | width_ptr, | |
int * | height_ptr, | |||
const char * | str | |||
) |
Parses str
and put in width_ptr
and height_ptr
the detected values.
[in] | str | the string to parse: it has to be a string in the format <width>x<height> or a valid video frame size abbreviation. |
[in,out] | width_ptr | pointer to the variable which will contain the detected frame width value |
[in,out] | height_ptr | pointer to the variable which will contain the detected frame height value |
Definition at line 1468 of file utils.c.
Referenced by opt_frame_size(), parse_ffconfig(), and parse_image_size().
int av_tempfile | ( | char * | prefix, | |
char ** | filename | |||
) |
Definition at line 1377 of file utils.c.
Referenced by ff_xvid_encode_init(), and ff_xvid_rate_control_init().
unsigned int av_xiphlacing | ( | unsigned char * | s, | |
unsigned int | v | |||
) |
Definition at line 1358 of file utils.c.
Referenced by fixup_vorbis_headers(), oggvorbis_encode_init(), and put_main_header().
void avcodec_align_dimensions | ( | AVCodecContext * | s, | |
int * | width, | |||
int * | height | |||
) |
AVCodecContext* avcodec_alloc_context | ( | void | ) |
Allocates an AVCodecContext and sets its fields to default values.
The resulting struct can be deallocated by simply calling av_free().
Definition at line 820 of file utils.c.
Referenced by add_av_stream1(), add_codec(), audio_decode_example(), audio_encode_example(), av_new_stream(), estimate_best_b_count(), http_prepare_data(), main(), read_ffserver_streams(), rtp_new_av_stream(), video_decode_example(), and video_encode_example().
AVCodecContext* avcodec_alloc_context2 | ( | enum CodecType | codec_type | ) |
THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! we WILL change its arguments and name a few times!
Definition at line 806 of file utils.c.
Referenced by avcodec_alloc_context(), and main().
AVFrame* avcodec_alloc_frame | ( | void | ) |
Allocates an AVFrame and sets its fields to default values.
The resulting struct can be deallocated by simply calling av_free().
Definition at line 831 of file utils.c.
Referenced by AC3_encode_init(), adx_encode_init(), alloc_picture(), encode_init(), Faac_encode_init(), flac_encode_init(), g726_init(), get_watermark_picture(), libgsm_init(), MP3lame_encode_init(), MPA_encode_init(), oggvorbis_encode_init(), pcm_encode_init(), roq_dpcm_encode_init(), video_decode_example(), video_encode_example(), video_thread(), and vorbis_encode_init().
unsigned avcodec_build | ( | void | ) |
int avcodec_check_dimensions | ( | void * | av_log_ctx, | |
unsigned int | w, | |||
unsigned int | h | |||
) |
Checks if the given dimension of a picture is valid, meaning that all bytes of the picture can be addressed with a signed int.
[in] | w | Width of the picture. |
[in] | h | Height of the picture. |
Definition at line 220 of file utils.c.
Referenced by avcodec_decode_video(), avcodec_default_get_buffer(), avcodec_encode_video(), avcodec_open(), avpicture_fill(), codec_reinit(), decode_frame(), decode_init(), decode_seq_parameter_set(), dnxhd_decode_frame(), encode_init(), ff_mjpeg_decode_sof(), ff_pnm_decode_header(), flashsv_encode_init(), flv_h263_decode_picture_header(), gif_decode_frame(), iv_decode_frame(), mm_decode_init(), MPV_common_init(), pcx_decode_frame(), ptx_decode_frame(), qtrle_encode_init(), roq_encode_init(), rv20_decode_picture_header(), rv40_parse_slice_header(), sunrast_decode_frame(), tiff_decode_tag(), txd_decode_frame(), vqa_decode_init(), and xan_decode_init().
int avcodec_close | ( | AVCodecContext * | avctx | ) |
Definition at line 1009 of file utils.c.
Referenced by audio_decode_example(), audio_encode_example(), av_encode(), av_find_stream_info(), close_audio(), close_connection(), close_video(), estimate_best_b_count(), get_watermark_picture(), stream_component_close(), video_decode_example(), and video_encode_example().
int avcodec_decode_audio | ( | AVCodecContext * | avctx, | |
int16_t * | samples, | |||
int * | frame_size_ptr, | |||
const uint8_t * | buf, | |||
int | buf_size | |||
) |
Definition at line 987 of file utils.c.
Referenced by audio_decode_example().
int attribute_align_arg avcodec_decode_audio2 | ( | AVCodecContext * | avctx, | |
int16_t * | samples, | |||
int * | frame_size_ptr, | |||
const uint8_t * | buf, | |||
int | buf_size | |||
) |
Decodes an audio frame from buf
into samples
.
The avcodec_decode_audio2() function decodes an audio frame from the input buffer buf
of size buf_size
. To decode it, it makes use of the audio codec which was coupled with avctx
using avcodec_open(). The resulting decoded frame is stored in output buffer samples
. If no frame could be decompressed, frame_size_ptr
is zero. Otherwise, it is the decompressed frame size in bytes.
frame_size_ptr
to the allocated size of the output buffer before calling avcodec_decode_audio2().
The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE
larger than the actual read bytes because some optimized bitstream readers read 32 or 64 bits at once and could read over the end.
The end of the input buffer buf
should be set to 0 to ensure that no overreading happens for damaged MPEG streams.
buf
and output buffer samples
. The alignment requirements depend on the CPU: On some CPUs it isn't necessary at all, on others it won't work at all if not aligned and on others it will work but it will have an impact on performance. In practice, the bitstream should have 4 byte alignment at minimum and all sample data should be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If the linesize is not a multiple of 16 then there's no sense in aligning the start of the buffer to 16.avctx | the codec context | |
[out] | samples | the output buffer |
[in,out] | frame_size_ptr | the output buffer size in bytes |
[in] | buf | the input buffer |
[in] | buf_size | the input buffer size in bytes |
Definition at line 958 of file utils.c.
Referenced by audio_decode_frame(), avcodec_decode_audio(), output_packet(), and try_decode_frame().
int avcodec_decode_subtitle | ( | AVCodecContext * | avctx, | |
AVSubtitle * | sub, | |||
int * | got_sub_ptr, | |||
const uint8_t * | buf, | |||
int | buf_size | |||
) |
int attribute_align_arg avcodec_decode_video | ( | AVCodecContext * | avctx, | |
AVFrame * | picture, | |||
int * | got_picture_ptr, | |||
const uint8_t * | buf, | |||
int | buf_size | |||
) |
Decodes a video frame from buf
into picture
.
The avcodec_decode_video() function decodes a video frame from the input buffer buf
of size buf_size
. To decode it, it makes use of the video codec which was coupled with avctx
using avcodec_open(). The resulting decoded frame is stored in picture
.
FF_INPUT_BUFFER_PADDING_SIZE
larger than the actual read bytes because some optimized bitstream readers read 32 or 64 bits at once and could read over the end.
The end of the input buffer buf
should be set to 0 to ensure that no overreading happens for damaged MPEG streams.
buf
and output buffer samples
. The alignment requirements depend on the CPU: on some CPUs it isn't necessary at all, on others it won't work at all if not aligned and on others it will work but it will have an impact on performance. In practice, the bitstream should have 4 byte alignment at minimum and all sample data should be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If the linesize is not a multiple of 16 then there's no sense in aligning the start of the buffer to 16.avctx | the codec context | |
[out] | picture | The AVFrame in which the decoded video frame will be stored. |
[in] | buf | the input buffer |
[in] | buf_size | the size of the input buffer in bytes |
[in,out] | got_picture_ptr | Zero if no frame could be decompressed, otherwise, it is nonzero. |
Definition at line 935 of file utils.c.
Referenced by get_watermark_picture(), output_packet(), try_decode_frame(), video_decode_example(), and video_thread().
int avcodec_default_execute | ( | AVCodecContext * | c, | |
int(*)(AVCodecContext *c2, void *arg2) | func, | |||
void ** | arg, | |||
int * | ret, | |||
int | count | |||
) |
void avcodec_default_free_buffers | ( | AVCodecContext * | s | ) |
int avcodec_default_get_buffer | ( | AVCodecContext * | s, | |
AVFrame * | pic | |||
) |
Definition at line 228 of file utils.c.
Referenced by avcodec_get_context_defaults2(), and my_get_buffer().
enum PixelFormat avcodec_default_get_format | ( | struct AVCodecContext * | s, | |
const enum PixelFormat * | fmt | |||
) |
int avcodec_default_reget_buffer | ( | AVCodecContext * | s, | |
AVFrame * | pic | |||
) |
void avcodec_default_release_buffer | ( | AVCodecContext * | s, | |
AVFrame * | pic | |||
) |
Definition at line 342 of file utils.c.
Referenced by avcodec_get_context_defaults2(), and my_release_buffer().
int attribute_align_arg avcodec_encode_audio | ( | AVCodecContext * | avctx, | |
uint8_t * | buf, | |||
int | buf_size, | |||
const short * | samples | |||
) |
Encodes an audio frame from samples
into buf
.
The avcodec_encode_audio() function encodes an audio frame from the input buffer samples
. To encode it, it makes use of the audio codec which was coupled with avctx
using avcodec_open(). The resulting encoded frame is stored in output buffer buf
.
FF_MIN_BUFFER_SIZE
bytes large.avctx | the codec context | |
[out] | buf | the output buffer |
[in] | buf_size | the output buffer size |
[in] | samples | the input buffer containing the samples The number of samples read from this buffer is frame_size*channels, both of which are defined in avctx . |
Definition at line 892 of file utils.c.
Referenced by audio_encode_example(), do_audio_out(), output_packet(), and write_audio_frame().
int avcodec_encode_subtitle | ( | AVCodecContext * | avctx, | |
uint8_t * | buf, | |||
int | buf_size, | |||
const AVSubtitle * | sub | |||
) |
int attribute_align_arg avcodec_encode_video | ( | AVCodecContext * | avctx, | |
uint8_t * | buf, | |||
int | buf_size, | |||
const AVFrame * | pict | |||
) |
Encodes a video frame from pict
into buf
.
The avcodec_encode_video() function encodes a video frame from the input pict
. To encode it, it makes use of the video codec which was coupled with avctx
using avcodec_open(). The resulting encoded bytes representing the frame are stored in the output buffer buf
. The input picture should be stored using a specific format, namely avctx.pix_fmt
.
avctx | the codec context | |
[out] | buf | the output buffer for the bitstream of encoded frame |
[in] | buf_size | the size of the output buffer in bytes |
[in] | pict | the input picture to encode |
Definition at line 907 of file utils.c.
Referenced by do_video_out(), estimate_best_b_count(), output_packet(), video_encode_example(), and write_video_frame().
Finds a registered decoder with a matching codec ID.
id | CodecID of the requested decoder |
Definition at line 1053 of file utils.c.
Referenced by audio_decode_example(), av_encode(), avcodec_string(), get_watermark_picture(), open_parser(), sdp_parse_rtpmap(), stream_component_open(), try_decode_frame(), and video_decode_example().
AVCodec* avcodec_find_decoder_by_name | ( | const char * | name | ) |
Finds a registered decoder with the specified name.
name | name of the requested decoder |
Definition at line 1065 of file utils.c.
Referenced by find_codec_or_die().
Finds a registered encoder with a matching codec ID.
id | CodecID of the requested encoder |
Definition at line 1029 of file utils.c.
Referenced by asf_write_header1(), audio_encode_example(), av_encode(), avcodec_string(), compute_stats(), estimate_best_b_count(), new_video_stream(), open_audio(), open_video(), and video_encode_example().
AVCodec* avcodec_find_encoder_by_name | ( | const char * | name | ) |
Finds a registered encoder with the specified name.
name | name of the requested encoder |
Definition at line 1041 of file utils.c.
Referenced by find_codec_or_die(), opt_audio_codec(), and opt_video_codec().
void avcodec_flush_buffers | ( | AVCodecContext * | avctx | ) |
Flush buffers, should be called when seeking or when switching to a different stream.
Definition at line 1265 of file utils.c.
Referenced by audio_decode_frame(), subtitle_thread(), and video_thread().
void avcodec_get_context_defaults | ( | AVCodecContext * | s | ) |
Sets the fields of the given AVCodecContext to default values.
s | The AVCodecContext of which the fields should be set to default values. |
void avcodec_get_context_defaults2 | ( | AVCodecContext * | s, | |
enum CodecType | codec_type | |||
) |
THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! we WILL change its arguments and name a few times!
Definition at line 777 of file utils.c.
Referenced by avcodec_alloc_context2(), avcodec_get_context_defaults(), new_audio_stream(), new_subtitle_stream(), and new_video_stream().
void avcodec_get_frame_defaults | ( | AVFrame * | pic | ) |
Sets the fields of the given AVFrame to default values.
pic | The AVFrame of which the fields should be set to default values. |
Definition at line 824 of file utils.c.
Referenced by av_encode(), avcodec_alloc_frame(), bmp_decode_init(), bmp_encode_init(), common_init(), do_video_out(), encode_init(), estimate_best_b_count(), gif_decode_init(), output_packet(), pcx_init(), png_dec_init(), png_enc_init(), ptx_init(), sgi_init(), sunrast_init(), targa_init(), tiff_init(), and txd_init().
void avcodec_init | ( | void | ) |
Initializes libavcodec.
Definition at line 1254 of file utils.c.
Referenced by av_register_all(), and main().
int attribute_align_arg avcodec_open | ( | AVCodecContext * | avctx, | |
AVCodec * | codec | |||
) |
Initializes the AVCodecContext to use the given AVCodec.
Prior to using this function the context has to be allocated.
The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for retrieving a codec.
avcodec_register_all(); codec = avcodec_find_decoder(CODEC_ID_H264); if (!codec) exit(1); context = avcodec_alloc_context(); if (avcodec_open(context, codec) < 0) exit(1);
avctx | The context which will be set up to use the given codec. | |
codec | The codec to use within the context. |
Definition at line 841 of file utils.c.
Referenced by audio_decode_example(), audio_encode_example(), av_encode(), estimate_best_b_count(), get_watermark_picture(), open_audio(), open_parser(), open_video(), stream_component_open(), try_decode_frame(), video_decode_example(), and video_encode_example().
void avcodec_set_dimensions | ( | AVCodecContext * | s, | |
int | width, | |||
int | height | |||
) |
Definition at line 143 of file utils.c.
Referenced by av_mpeg4_decode_header(), avcodec_open(), decode_frame(), dnxhd_decode_frame(), ff_h263_decode_frame(), ff_mjpeg_decode_sof(), gif_decode_frame(), h261_decode_frame(), mpeg_decode_postinit(), mpegvideo_extract_headers(), pcx_decode_frame(), ptx_decode_frame(), sunrast_decode_frame(), theora_header(), tiff_decode_tag(), txd_decode_frame(), vp56_init(), vp5_parse_header(), and vp6_parse_header().
void avcodec_string | ( | char * | buf, | |
int | buf_size, | |||
AVCodecContext * | enc, | |||
int | encode | |||
) |
Definition at line 1077 of file utils.c.
Referenced by av_find_stream_info(), compute_stats(), and dump_stream_format().
int avcodec_thread_init | ( | AVCodecContext * | s, | |
int | thread_count | |||
) |
static void do_free | ( | void | ) | [static] |
void* ff_realloc_static | ( | void * | ptr, | |
unsigned int | size | |||
) |
Same as av_mallocz_static(), but does a realloc.
[in] | ptr | The block of memory to reallocate. |
[in] | size | The requested size. |
Definition at line 90 of file utils.c.
Referenced by alloc_table().
unsigned int allocated_static = 0 [static] |
void** array_static = NULL [static] |
Definition at line 74 of file utils.c.
Referenced by av_free_static(), av_mallocz_static(), and ff_realloc_static().
AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options } [static] |
int volatile entangled_thread_counter = 0 [static] |
const uint8_t ff_reverse[256] |
Initial value:
{ 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0, 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8, 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4, 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC, 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2, 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA, 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6, 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE, 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1, 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9, 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5, 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD, 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3, 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB, 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7, 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF, }
Definition at line 41 of file utils.c.
Referenced by asv2_get_bits(), asv2_put_bits(), decode_frame(), fft(), ir2_decode_frame(), pcm_decode_frame(), pcm_encode_frame(), and wnv1_get_code().
AVCodec* first_avcodec = NULL |
unsigned int last_static = 0 [static] |
Definition at line 72 of file utils.c.
Referenced by av_free_static(), av_mallocz_static(), and ff_realloc_static().
VideoFrameRateAbbr video_frame_rate_abbrs[] [static] |
VideoFrameSizeAbbr video_frame_size_abbrs[] [static] |