Libav
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common internal api header. More...
#include <stdint.h>
#include "libavutil/buffer.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixfmt.h"
#include "avcodec.h"
#include "config.h"
Go to the source code of this file.
Data Structures | |
struct | FramePool |
struct | AVCodecInternal |
struct | AVCodecDefault |
Macros | |
#define | FF_SANE_NB_CHANNELS 63U |
#define | FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_INPUT_BUFFER_PADDING_SIZE) |
Maximum size in bytes of extradata. More... | |
Functions | |
AVHWAccel * | ff_find_hwaccel (AVCodecContext *avctx) |
Return the hardware accelerated codec for codec codec_id and pixel format pix_fmt. More... | |
int | ff_match_2uint16 (const uint16_t(*tab)[2], int size, int a, int b) |
Return the index into tab at which {a,b} match elements {[0],[1]} of tab. More... | |
unsigned int | avpriv_toupper4 (unsigned int x) |
int | avpriv_lock_avformat (void) |
int | avpriv_unlock_avformat (void) |
int | ff_alloc_packet (AVPacket *avpkt, int size) |
Check AVPacket size and/or allocate data. More... | |
static av_always_inline int64_t | ff_samples_to_time_base (AVCodecContext *avctx, int64_t samples) |
Rescale from sample rate to AVCodecContext.time_base. More... | |
int | ff_get_buffer (AVCodecContext *avctx, AVFrame *frame, int flags) |
Get a buffer for a frame. More... | |
int | ff_reget_buffer (AVCodecContext *avctx, AVFrame *frame) |
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buffer when needed. More... | |
const uint8_t * | avpriv_find_start_code (const uint8_t *restrict p, const uint8_t *end, uint32_t *restrict state) |
int | ff_set_dimensions (AVCodecContext *s, int width, int height) |
Check that the provided frame dimensions are valid and set them on the codec context. More... | |
int | ff_side_data_update_matrix_encoding (AVFrame *frame, enum AVMatrixEncoding matrix_encoding) |
Add or update AV_FRAME_DATA_MATRIXENCODING side data. More... | |
common internal api header.
Definition in file internal.h.
#define FF_SANE_NB_CHANNELS 63U |
Definition at line 36 of file internal.h.
Referenced by avcodec_open2(), and ff_get_buffer().
#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 130 of file internal.h.
Referenced by avcodec_open2(), and avformat_find_stream_info().
AVHWAccel* ff_find_hwaccel | ( | AVCodecContext * | avctx) |
Return the hardware accelerated codec for codec codec_id and pixel format pix_fmt.
avctx | The codec context containing the codec_id and pixel format. |
Definition at line 2177 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 2125 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 2229 of file utils.c.
Referenced by ff_codec_get_id(), ff_MPV_common_init(), and validate_codec_tag().
int avpriv_lock_avformat | ( | void | ) |
Definition at line 2211 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 2220 of file utils.c.
Referenced by avisynth_read_close(), avisynth_read_header(), ff_tls_deinit(), and ff_tls_init().
int ff_alloc_packet | ( | 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.
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 1125 of file utils.c.
Referenced by a64multi_encode_frame(), aac_encode_frame(), adpcm_encode_frame(), adx_encode_frame(), alac_encode_frame(), amr_wb_encode_frame(), bmp_encode_frame(), cng_encode_frame(), dnxhd_encode_picture(), dvvideo_encode_frame(), encode_frame(), encode_nals(), encode_picture_ls(), encode_superframe(), Faac_encode_frame(), ff_MPV_encode_picture(), ffv1_encode_frame(), flac_encode_frame(), flashsv_encode_frame(), g722_encode_frame(), gif_encode_frame(), ilbc_encode_frame(), libgsm_encode_frame(), libopenjpeg_encode_frame(), libopus_encode(), libschroedinger_encode_frame(), libwebp_encode_frame(), ljpeg_encode_frame(), mp3lame_encode_frame(), MPA_encode_frame(), oggvorbis_encode_frame(), pam_encode_frame(), pcm_encode_frame(), pcx_encode_frame(), pnm_encode_frame(), qtrle_encode_frame(), ra144_encode_frame(), raw_encode(), roq_dpcm_encode_frame(), roq_encode_frame(), storeframe(), sunrast_encode_frame(), targa_encode_frame(), utvideo_encode_frame(), v410_encode_frame(), vorbis_encode_frame(), XAVS_frame(), xbm_encode_frame(), and xwd_encode_frame().
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static |
Rescale from sample rate to AVCodecContext.time_base.
Definition at line 153 of file internal.h.
Referenced by amr_wb_encode_frame(), avcodec_encode_audio2(), encode_frame(), encode_superframe(), ff_af_queue_remove(), flac_encode_frame(), g722_encode_frame(), MPA_encode_frame(), oggvorbis_encode_frame(), and vorbis_encode_frame().
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 575 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(), atrac3p_decode_frame(), aura_decode_frame(), bfi_decode_frame(), bmp_decode_frame(), bmv_aud_decode_frame(), cdg_decode_frame(), cdxl_decode_frame(), cinaudio_decode_frame(), cllc_decode_frame(), cmv_decode_frame(), cng_decode_frame(), cook_decode_frame(), cyuv_decode_frame(), dca_decode_frame(), decode_element(), decode_frame(), decode_pic(), decode_tag(), dfa_decode_frame(), dnxhd_decode_frame(), dpcm_decode_frame(), dvvideo_decode_frame(), dxtory_decode_v1_410(), dxtory_decode_v1_420(), dxtory_decode_v1_444(), dxtory_decode_v1_rgb(), dxtory_decode_v2_410(), dxtory_decode_v2_420(), dxtory_decode_v2_444(), dxtory_decode_v2_565(), dxtory_decode_v2_rgb(), eightsvx_decode_frame(), escape124_decode_frame(), escape130_decode_frame(), execute_code(), fdk_aac_decode_frame(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_reget_buffer(), ff_thread_get_buffer(), ff_twinvq_decode_frame(), ff_vp56_decode_frame(), ffv1_decode_frame(), flac_decode_frame(), frame_configure_elements(), g2m_decode_frame(), g722_decode_frame(), g723_1_decode_frame(), get_buffer(), gif_decode_frame(), gsm_decode_frame(), hnm_decode_frame(), idcin_decode_frame(), ilbc_decode_frame(), imc_decode_frame(), init_image(), ipvideo_decode_frame(), 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(), output_data(), 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(), rl2_decode_frame(), roq_encode_frame(), s302m_decode_frame(), set_sps(), 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(), tgv_decode_frame(), tmv_decode_frame(), tqi_decode_frame(), truespeech_decode_frame(), tta_decode_frame(), txd_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(), wavpack_decode_block(), wma_decode_superframe(), ws_snd_decode_frame(), xan_decode_frame(), xwd_decode_frame(), yop_decode_frame(), and zerocodec_decode_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.
Definition at line 755 of file utils.c.
Referenced by aasc_decode_frame(), avs_decode_frame(), bethsoftvid_decode_frame(), cdg_decode_frame(), cinepak_decode_frame(), cinvideo_decode_frame(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), fic_decode_frame(), flashsv_decode_frame(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), 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(), qtrle_decode_frame(), roq_decode_frame(), rpza_decode_frame(), seqvideo_decode_frame(), smc_decode_frame(), truemotion1_decode_frame(), tscc2_decode_frame(), ulti_decode_frame(), and xan_decode_frame().
const uint8_t* avpriv_find_start_code | ( | const uint8_t *restrict | p, |
const uint8_t * | end, | ||
uint32_t *restrict | state | ||
) |
Definition at line 2302 of file utils.c.
Referenced by cavs_decode_frame(), decode_chunks(), ff_mpeg1_find_frame_end(), ff_rtp_send_mpegvideo(), mpeg_decode_slice(), mpegts_write_packet_internal(), mpegvideo_extract_headers(), parse_nal_units(), and slice_decode_thread().
int ff_set_dimensions | ( | AVCodecContext * | s, |
int | width, | ||
int | height | ||
) |
Check that the provided frame dimensions are valid and set them on the codec context.
Definition at line 144 of file utils.c.
Referenced by apply_param_change(), av_mpeg4_decode_header(), avcodec_open2(), avcodec_set_dimensions(), avpriv_dirac_parse_sequence_header(), avs_decode_init(), cdxl_decode_frame(), cmv_process_header(), decode_frame(), decode_frame_headers(), decode_init(), dnxhd_decode_frame(), dvdsub_init(), dvvideo_decode_frame(), execute_code(), ff_h263_decode_frame(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_rv34_decode_frame(), ff_vp56_decode_frame(), g2m_decode_frame(), gif_decode_frame(), h261_decode_frame(), init_image(), libopenjpeg_decode_frame(), mpeg_decode_postinit(), mpegvideo_extract_headers(), parse_presentation_segment(), pcx_decode_frame(), ptx_decode_frame(), rv20_decode_picture_header(), sunrast_decode_frame(), svq1_decode_frame(), tgq_decode_frame(), tgv_decode_frame(), tqi_decode_frame(), truemotion1_decode_header(), txd_decode_frame(), update_dimensions(), vp56_size_changed(), vp5_parse_header(), vp6_parse_header(), vp8_decode(), and vp8_lossless_decode_frame().
int ff_side_data_update_matrix_encoding | ( | AVFrame * | frame, |
enum AVMatrixEncoding | matrix_encoding | ||
) |
Add or update AV_FRAME_DATA_MATRIXENCODING side data.
Definition at line 156 of file utils.c.
Referenced by ac3_decode_frame(), dca_decode_frame(), and output_data().