FFmpeg
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#include <stdint.h>
#include <string.h>
#include "config.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/emms.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/mastering_display_metadata.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "avcodec_internal.h"
#include "bytestream.h"
#include "bsf.h"
#include "codec_desc.h"
#include "codec_internal.h"
#include "decode.h"
#include "hwaccel_internal.h"
#include "hwconfig.h"
#include "internal.h"
#include "packet_internal.h"
#include "progressframe.h"
#include "refstruct.h"
#include "thread.h"
#include "threadprogress.h"
Go to the source code of this file.
Data Structures | |
struct | DecodeContext |
struct | ProgressInternal |
Macros | |
#define | UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */ |
Functions | |
static DecodeContext * | decode_ctx (AVCodecInternal *avci) |
static int | apply_param_change (AVCodecContext *avctx, const AVPacket *avpkt) |
static int | extract_packet_props (AVCodecInternal *avci, const AVPacket *pkt) |
static int | decode_bsfs_init (AVCodecContext *avctx) |
static int | decode_get_packet (AVCodecContext *avctx, AVPacket *pkt) |
int | ff_decode_get_packet (AVCodecContext *avctx, AVPacket *pkt) |
Called by decoders to get the next packet for decoding. More... | |
static int64_t | guess_correct_pts (DecodeContext *dc, int64_t reordered_pts, int64_t dts) |
Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect times. More... | |
static int | discard_samples (AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples) |
static int | decode_simple_internal (AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples) |
static int | detect_colorspace (av_unused AVCodecContext *c, av_unused AVFrame *f) |
static int | fill_frame_props (const AVCodecContext *avctx, AVFrame *frame) |
static int | decode_simple_receive_frame (AVCodecContext *avctx, AVFrame *frame) |
static int | decode_receive_frame_internal (AVCodecContext *avctx, AVFrame *frame) |
int attribute_align_arg | avcodec_send_packet (AVCodecContext *avctx, const AVPacket *avpkt) |
Supply raw packet data as input to a decoder. More... | |
static int | apply_cropping (AVCodecContext *avctx, AVFrame *frame) |
static int | frame_validate (AVCodecContext *avctx, AVFrame *frame) |
int | ff_decode_receive_frame (AVCodecContext *avctx, AVFrame *frame) |
avcodec_receive_frame() implementation for decoders. More... | |
static void | get_subtitle_defaults (AVSubtitle *sub) |
static int | recode_subtitle (AVCodecContext *avctx, const AVPacket **outpkt, const AVPacket *inpkt, AVPacket *buf_pkt) |
static int | utf8_check (const uint8_t *str) |
int | avcodec_decode_subtitle2 (AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, const AVPacket *avpkt) |
Decode a subtitle message. More... | |
enum AVPixelFormat | avcodec_default_get_format (struct AVCodecContext *avctx, const enum AVPixelFormat *fmt) |
int | ff_decode_get_hw_frames_ctx (AVCodecContext *avctx, enum AVHWDeviceType dev_type) |
Make sure avctx.hw_frames_ctx is set. More... | |
int | avcodec_get_hw_frames_parameters (AVCodecContext *avctx, AVBufferRef *device_ref, enum AVPixelFormat hw_pix_fmt, AVBufferRef **out_frames_ref) |
Create and return a AVHWFramesContext with values adequate for hardware decoding. More... | |
static int | hwaccel_init (AVCodecContext *avctx, const FFHWAccel *hwaccel) |
void | ff_hwaccel_uninit (AVCodecContext *avctx) |
int | ff_get_format (AVCodecContext *avctx, const enum AVPixelFormat *fmt) |
Select the (possibly hardware accelerated) pixel format. More... | |
const AVPacketSideData * | ff_get_coded_side_data (const AVCodecContext *avctx, enum AVPacketSideDataType type) |
Get side data of the given type from a decoding context. More... | |
static int | add_metadata_from_side_data (const AVPacket *avpkt, AVFrame *frame) |
int | ff_decode_frame_props_from_pkt (const AVCodecContext *avctx, AVFrame *frame, const AVPacket *pkt) |
Set various frame properties from the provided packet. More... | |
int | ff_decode_frame_props (AVCodecContext *avctx, AVFrame *frame) |
Set various frame properties from the codec context / packet data. More... | |
static void | validate_avframe_allocation (AVCodecContext *avctx, AVFrame *frame) |
static void | decode_data_free (void *opaque, uint8_t *data) |
int | ff_attach_decode_data (AVFrame *frame) |
int | ff_get_buffer (AVCodecContext *avctx, AVFrame *frame, int flags) |
Get a buffer for a frame. More... | |
static int | reget_buffer_internal (AVCodecContext *avctx, AVFrame *frame, int flags) |
int | ff_reget_buffer (AVCodecContext *avctx, AVFrame *frame, int flags) |
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available. More... | |
static void | check_progress_consistency (const ProgressFrame *f) |
static int | progress_frame_get (AVCodecContext *avctx, ProgressFrame *f) |
int | ff_progress_frame_get_buffer (AVCodecContext *avctx, ProgressFrame *f, int flags) |
This function sets up the ProgressFrame, i.e. More... | |
void | ff_progress_frame_ref (ProgressFrame *dst, const ProgressFrame *src) |
Set dst->f to src->f and make dst a co-owner of src->f. More... | |
void | ff_progress_frame_unref (ProgressFrame *f) |
Give up a reference to the underlying frame contained in a ProgressFrame and reset the ProgressFrame, setting all pointers to NULL. More... | |
void | ff_progress_frame_replace (ProgressFrame *dst, const ProgressFrame *src) |
Do nothing if dst and src already refer to the same AVFrame; otherwise unreference dst and if src is not blank, put a reference to src's AVFrame in its place (in case src is not blank). More... | |
void | ff_progress_frame_report (ProgressFrame *f, int n) |
Notify later decoding threads when part of their reference frame is ready. More... | |
void | ff_progress_frame_await (const ProgressFrame *f, int n) |
Wait for earlier decoding threads to finish reference frames. More... | |
enum ThreadingStatus | ff_thread_sync_ref (AVCodecContext *avctx, size_t offset) |
Allows to synchronize objects whose lifetime is the whole decoding process among all frame threads. More... | |
static av_cold int | progress_frame_pool_init_cb (FFRefStructOpaque opaque, void *obj) |
static void | progress_frame_pool_reset_cb (FFRefStructOpaque unused, void *obj) |
static av_cold void | progress_frame_pool_free_entry_cb (FFRefStructOpaque opaque, void *obj) |
int | ff_decode_preinit (AVCodecContext *avctx) |
Perform decoder initialization and validation. More... | |
static int | side_data_pref (const AVCodecContext *avctx, AVFrameSideData ***sd, int *nb_sd, enum AVFrameSideDataType type) |
Check side data preference and clear existing side data from frame if needed. More... | |
int | ff_frame_new_side_data (const AVCodecContext *avctx, AVFrame *frame, enum AVFrameSideDataType type, size_t size, AVFrameSideData **psd) |
Wrapper around av_frame_new_side_data, which rejects side data overridden by the demuxer. More... | |
int | ff_frame_new_side_data_from_buf_ext (const AVCodecContext *avctx, AVFrameSideData ***sd, int *nb_sd, enum AVFrameSideDataType type, AVBufferRef **buf) |
Same as ff_frame_new_side_data_from_buf , but taking a AVFrameSideData array directly instead of an AVFrame. More... | |
int | ff_frame_new_side_data_from_buf (const AVCodecContext *avctx, AVFrame *frame, enum AVFrameSideDataType type, AVBufferRef **buf, AVFrameSideData **psd) |
Similar to ff_frame_new_side_data , but using an existing buffer ref. More... | |
int | ff_decode_mastering_display_new_ext (const AVCodecContext *avctx, AVFrameSideData ***sd, int *nb_sd, struct AVMasteringDisplayMetadata **mdm) |
Same as ff_decode_mastering_display_new , but taking a AVFrameSideData array directly instead of an AVFrame. More... | |
int | ff_decode_mastering_display_new (const AVCodecContext *avctx, AVFrame *frame, AVMasteringDisplayMetadata **mdm) |
Wrapper around av_mastering_display_metadata_create_side_data(), which rejects side data overridden by the demuxer. More... | |
int | ff_decode_content_light_new_ext (const AVCodecContext *avctx, AVFrameSideData ***sd, int *nb_sd, AVContentLightMetadata **clm) |
Same as ff_decode_content_light_new , but taking a AVFrameSideData array directly instead of an AVFrame. More... | |
int | ff_decode_content_light_new (const AVCodecContext *avctx, AVFrame *frame, AVContentLightMetadata **clm) |
Wrapper around av_content_light_metadata_create_side_data(), which rejects side data overridden by the demuxer. More... | |
int | ff_copy_palette (void *dst, const AVPacket *src, void *logctx) |
Check whether the side-data of src contains a palette of size AVPALETTE_SIZE; if so, copy it to dst and return 1; else return 0. More... | |
int | ff_hwaccel_frame_priv_alloc (AVCodecContext *avctx, void **hwaccel_picture_private) |
Allocate a hwaccel frame private data if the provided avctx uses a hwaccel method that needs it. More... | |
void | ff_decode_flush_buffers (AVCodecContext *avctx) |
AVCodecInternal * | ff_decode_internal_alloc (void) |
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Definition at line 80 of file decode.c.
Referenced by avcodec_send_packet(), decode_receive_frame_internal(), decode_simple_internal(), ff_decode_flush_buffers(), ff_decode_get_packet(), ff_decode_preinit(), and side_data_pref().
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Definition at line 85 of file decode.c.
Referenced by decode_get_packet().
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Definition at line 146 of file decode.c.
Referenced by decode_get_packet().
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Definition at line 161 of file decode.c.
Referenced by ff_decode_preinit().
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Definition at line 196 of file decode.c.
Referenced by ff_decode_get_packet().
int ff_decode_get_packet | ( | AVCodecContext * | avctx, |
AVPacket * | pkt | ||
) |
Called by decoders to get the next packet for decoding.
pkt | An empty packet to be filled with data. |
Definition at line 223 of file decode.c.
Referenced by av1_receive_frame(), binkaudio_receive_frame(), cuvid_output_frame(), decode_simple_internal(), ffmmal_receive_frame(), libdav1d_receive_frame_internal(), libjxl_receive_frame(), libxevd_receive_frame(), mediacodec_receive_frame(), osq_receive_frame(), rkmpp_receive_frame(), and v4l2_receive_frame().
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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.pts |
dts | the dts field of the decoded AVPacket |
Definition at line 258 of file decode.c.
Referenced by decode_receive_frame_internal().
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Definition at line 284 of file decode.c.
Referenced by decode_receive_frame_internal(), and decode_simple_internal().
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Definition at line 382 of file decode.c.
Referenced by decode_simple_receive_frame().
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Definition at line 536 of file decode.c.
Referenced by decode_receive_frame_internal().
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Definition at line 542 of file decode.c.
Referenced by decode_receive_frame_internal(), and ff_decode_frame_props().
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Definition at line 575 of file decode.c.
Referenced by decode_receive_frame_internal().
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Definition at line 591 of file decode.c.
Referenced by avcodec_send_packet(), and ff_decode_receive_frame().
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Definition at line 711 of file decode.c.
Referenced by ff_decode_receive_frame().
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Definition at line 739 of file decode.c.
Referenced by ff_decode_receive_frame().
int ff_decode_receive_frame | ( | AVCodecContext * | avctx, |
AVFrame * | frame | ||
) |
avcodec_receive_frame() implementation for decoders.
Definition at line 765 of file decode.c.
Referenced by avcodec_receive_frame().
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Definition at line 846 of file decode.c.
Referenced by avcodec_decode_subtitle2().
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Definition at line 853 of file decode.c.
Referenced by avcodec_decode_subtitle2().
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Definition at line 914 of file decode.c.
Referenced by avcodec_decode_subtitle2().
int ff_decode_get_hw_frames_ctx | ( | AVCodecContext * | avctx, |
enum AVHWDeviceType | dev_type | ||
) |
Make sure avctx.hw_frames_ctx is set.
If it's not set, the function will try to allocate it from hw_device_ctx. If that is not possible, an error message is printed, and an error code is returned.
Definition at line 1067 of file decode.c.
Referenced by ff_d3d12va_decode_init(), ff_dxva2_decode_init(), ff_vaapi_decode_init(), ff_vdpau_common_init(), and ff_vk_decode_init().
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Definition at line 1176 of file decode.c.
Referenced by ff_get_format().
void ff_hwaccel_uninit | ( | AVCodecContext * | avctx | ) |
Definition at line 1211 of file decode.c.
Referenced by ff_codec_close(), ff_frame_thread_free(), ff_get_format(), and update_context_from_thread().
int ff_get_format | ( | AVCodecContext * | avctx, |
const enum AVPixelFormat * | fmt | ||
) |
Select the (possibly hardware accelerated) pixel format.
This is a wrapper around AVCodecContext.get_format() and should be used instead of calling get_format() directly.
The list of pixel formats must contain at least one valid entry, and is terminated with AV_PIX_FMT_NONE. If it is possible to decode to software, the last entry in the list must be the most accurate software format. If it is not possible to decode to software, AVCodecContext.sw_pix_fmt must be set before calling this function.
Definition at line 1223 of file decode.c.
Referenced by cuvid_decode_init(), decode_frame_header(), ff_mediacodec_dec_init(), ff_mjpeg_decode_sof(), ffmmal_init_decoder(), get_format(), get_pixel_format(), h263_get_format(), mpeg_get_pixelformat(), qsv_decode_preinit(), update_size(), and vc1_get_format().
const AVPacketSideData* ff_get_coded_side_data | ( | const AVCodecContext * | avctx, |
enum AVPacketSideDataType | type | ||
) |
Get side data of the given type from a decoding context.
Definition at line 1361 of file decode.c.
Referenced by av1_decode_init(), ff_decode_frame_props(), hevc_decode_init(), and libdav1d_init().
Definition at line 1371 of file decode.c.
Referenced by ff_decode_frame_props_from_pkt().
int ff_decode_frame_props_from_pkt | ( | const AVCodecContext * | avctx, |
AVFrame * | frame, | ||
const AVPacket * | pkt | ||
) |
Set various frame properties from the provided packet.
Definition at line 1383 of file decode.c.
Referenced by ff_decode_frame_props(), libdav1d_receive_frame(), and libxevd_return_frame().
int ff_decode_frame_props | ( | AVCodecContext * | avctx, |
AVFrame * | frame | ||
) |
Set various frame properties from the codec context / packet data.
Definition at line 1449 of file decode.c.
Referenced by cuvid_output_frame(), ff_get_buffer(), ff_h263_decode_frame(), ffmal_copy_frame(), libdav1d_receive_frame(), qsv_get_continuous_buffer(), qtrle_decode_frame(), raw_decode(), reget_buffer_internal(), vpx_decode(), and wrapped_avframe_decode().
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Definition at line 1499 of file decode.c.
Referenced by ff_get_buffer().
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Definition at line 1520 of file decode.c.
Referenced by ff_attach_decode_data().
Definition at line 1533 of file decode.c.
Referenced by ff_get_buffer(), ff_videotoolbox_alloc_frame(), and qsv_get_continuous_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 1557 of file decode.c.
Referenced by ac3_decode_frame(), adpcm_decode_frame(), adx_decode_frame(), alloc_frame(), amrnb_decode_frame(), amrwb_decode_frame(), aom_decode(), apac_decode(), ape_decode_frame(), aptx_decode_frame(), atrac1_decode_frame(), atrac3_decode_frame(), atrac3al_decode_frame(), atrac3p_decode_frame(), atrac9_decode_frame(), aura_decode_frame(), avui_decode_frame(), bfi_decode_frame(), binkaudio_receive_frame(), bmp_decode_frame(), bmv_aud_decode_frame(), bonk_decode(), cdg_decode_frame(), cdxl_decode_frame(), cinaudio_decode_frame(), cmv_decode_frame(), cng_decode_frame(), cook_decode_frame(), copy_output(), cuvid_output_frame(), cyuv_decode_frame(), dds_decode(), decode_frame(), decode_pic(), decode_tag(), dfa_decode_frame(), dfpwm_dec_frame(), dpcm_decode_frame(), dss_sp_decode_frame(), eightsvx_decode_frame(), escape124_decode_frame(), escape130_decode_frame(), evrc_decode_frame(), execute_code(), fastaudio_decode(), fdk_aac_decode_frame(), ff_dca_lbr_filter_frame(), ff_dca_xll_filter_frame(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_thread_get_buffer(), ff_thread_get_ext_buffer(), ff_twinvq_decode_frame(), ff_vp56_decode_frame(), ffat_decode(), ffmal_copy_frame(), filter_frame(), filter_frame_fixed(), filter_frame_float(), fits_decode_frame(), frame_configure_elements(), ftr_decode_frame(), g2m_decode_frame(), g722_decode_frame(), g723_1_decode_frame(), gdv_decode_frame(), gem_decode_frame(), get_buffer(), get_buffer_with_edge(), gsm_decode_frame(), hcom_decode(), hnm_decode_frame(), hq_decode_frame(), hqa_decode_frame(), idcin_decode_frame(), ilbc_decode_frame(), imc_decode_frame(), init_frames(), ipu_decode_frame(), ipvideo_decode_frame(), lead_decode_frame(), libcelt_dec_decode(), libcodec2_decode(), libgsm_decode_frame(), libjxl_receive_frame(), liblc3_decode(), libopus_decode(), librsvg_decode_frame(), libspeex_decode_frame(), libuavs3d_decode_frame(), libxevd_image_copy(), m101_decode_frame(), mace_decode_frame(), mediacodec_wrap_sw_buffer(), misc4_decode(), mp_decode_frame(), mpc7_decode_frame(), mpc8_decode_frame(), msp2_decode_frame(), mss2_decode_frame(), mvc_decode_frame(), mxpeg_decode_frame(), oggvorbis_decode_frame(), on2avc_decode_frame(), opus_decode_packet(), osq_receive_frame(), output_data(), paf_audio_decode(), pcm_bluray_decode_frame(), pcm_decode_frame(), pcm_dvd_decode_frame(), pcx_decode_frame(), pgx_decode_frame(), pix_decode_frame(), pnm_decode_frame(), ptx_decode_frame(), qcelp_decode_frame(), qdm2_decode_frame(), qdmc_decode_frame(), qoa_decode_frame(), ra144_decode_frame(), ra288_decode_frame(), reget_buffer_internal(), rka_decode_frame(), rl2_decode_frame(), s302m_decode_frame(), sbc_decode_frame(), sga_decode_frame(), sgirle_decode_frame(), shorten_decode_frame(), sipr_decode_frame(), siren_decode(), smka_decode_frame(), speex_decode_frame(), sunrast_decode_frame(), svc_decode_frame(), svq1_decode_frame(), synth_superframe(), tdsc_decode_frame(), tgq_decode_frame(), tgv_decode_frame(), thread_get_buffer_internal(), tmv_decode_frame(), tqi_decode_frame(), truemotion2rt_decode_frame(), truespeech_decode_frame(), txd_decode_frame(), v308_decode_frame(), v408_decode_frame(), vbn_decode_frame(), vcr1_decode_frame(), vmdaudio_decode_frame(), vmdvideo_decode_frame(), vorbis_decode_frame(), vpx_decode(), wavarc_decode(), wavesynth_decode(), wma_decode_superframe(), wmapro_decode_packet(), ws_snd_decode_frame(), xan_decode_frame(), xbm_decode_frame(), xface_decode_frame(), xma_decode_packet(), xpm_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 1629 of file decode.c.
Referenced by ff_reget_buffer().
int ff_reget_buffer | ( | AVCodecContext * | avctx, |
AVFrame * | frame, | ||
int | flags | ||
) |
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
Definition at line 1666 of file decode.c.
Referenced by aasc_decode_frame(), avs_decode_frame(), bethsoftvid_decode_frame(), cdg_decode_frame(), cdtoons_decode_frame(), cinepak_decode_frame(), cinvideo_decode_frame(), clv_decode_frame(), cpia_decode_frame(), decode_frame(), decode_frame_lscr(), fic_decode_frame(), flashsv_decode_frame(), flic_decode_frame_15_16BPP(), flic_decode_frame_1BPP(), flic_decode_frame_24BPP(), flic_decode_frame_8BPP(), gif_decode_frame(), imx_decode_frame(), ir2_decode_frame(), mm_decode_frame(), mobiclip_decode(), mp_decode_frame(), msrle_decode_frame(), mss1_decode_frame(), mss2_decode_frame(), mss3_decode_frame(), mss4_decode_frame(), msvideo1_decode_frame(), paf_video_decode(), qtrle_decode_frame(), roq_decode_frame(), rpza_decode_stream(), rscc_decode_frame(), screenpresso_decode_frame(), seqvideo_decode_frame(), smc_decode_frame(), truemotion1_decode_frame(), tscc2_decode_frame(), ulti_decode_frame(), vqa_decode_frame(), vqc_decode_frame(), xan_decode_frame(), and yop_decode_frame().
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Definition at line 1679 of file decode.c.
Referenced by ff_progress_frame_replace(), and ff_progress_frame_unref().
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Definition at line 1685 of file decode.c.
Referenced by ff_progress_frame_get_buffer().
int ff_progress_frame_get_buffer | ( | struct AVCodecContext * | avctx, |
ProgressFrame * | f, | ||
int | flags | ||
) |
This function sets up the ProgressFrame, i.e.
gets ProgressFrame.f and also calls ff_thread_get_buffer() on the frame.
Definition at line 1699 of file decode.c.
Referenced by alloc_frame(), av1_frame_alloc(), decode_frame(), decode_idat_chunk(), mimic_decode_frame(), vp8_alloc_frame(), and vp9_frame_alloc().
void ff_progress_frame_ref | ( | ProgressFrame * | dst, |
const ProgressFrame * | src | ||
) |
Set dst->f to src->f and make dst a co-owner of src->f.
dst can then be used to wait on progress of the underlying frame.
Definition at line 1716 of file decode.c.
Referenced by ff_progress_frame_replace(), and hevc_ref_frame().
void ff_progress_frame_unref | ( | ProgressFrame * | f | ) |
Give up a reference to the underlying frame contained in a ProgressFrame and reset the ProgressFrame, setting all pointers to NULL.
Definition at line 1724 of file decode.c.
Referenced by av1_frame_unref(), decode_frame(), decode_idat_chunk(), ff_hevc_unref_frame(), ff_progress_frame_replace(), ffv1_decode_close(), mimic_decode_end(), mimic_decode_frame(), png_dec_end(), update_frames(), vp3_decode_flush(), vp8_alloc_frame(), vp8_release_frame(), vp9_decode_flush(), vp9_decode_free(), and vp9_frame_unref().
void ff_progress_frame_replace | ( | ProgressFrame * | dst, |
const ProgressFrame * | src | ||
) |
Do nothing if dst and src already refer to the same AVFrame; otherwise unreference dst and if src is not blank, put a reference to src's AVFrame in its place (in case src is not blank).
Definition at line 1731 of file decode.c.
Referenced by av1_frame_replace(), update_frames(), vp9_decode_frame(), and vp9_frame_replace().
void ff_progress_frame_report | ( | ProgressFrame * | f, |
int | progress | ||
) |
Notify later decoding threads when part of their reference frame is ready.
Call this when some part of the frame is finished decoding. Later calls with lower values of progress have no effect.
f | The frame being decoded. |
progress | Value, in arbitrary units, of how much of the frame has decoded. |
Definition at line 1741 of file decode.c.
Referenced by decode(), decode_frame(), decode_frame_common(), decode_nal_units(), decode_slice(), decode_tiles(), ff_hevc_hls_filter(), generate_missing_ref(), mimic_decode_frame(), vp3_draw_horiz_band(), vp78_decode_frame(), vp78_decode_mb_row_sliced(), and vp9_decode_frame().
void ff_progress_frame_await | ( | const ProgressFrame * | f, |
int | progress | ||
) |
Wait for earlier decoding threads to finish reference frames.
Call this before accessing some part of a frame, with a given value for progress, and it will return after the responsible decoding thread calls ff_thread_progress_report() with the same or higher value for progress.
f | The frame being referenced. |
progress | Value, in arbitrary units, to wait for. |
enum ThreadingStatus ff_thread_sync_ref | ( | AVCodecContext * | avctx, |
size_t | offset | ||
) |
Allows to synchronize objects whose lifetime is the whole decoding process among all frame threads.
When called from a non-copy thread, do nothing. When called from another thread, place a new RefStruct reference at the given offset in the calling thread's private data from the RefStruct reference in the private data of the first decoding thread. The first thread must have a valid RefStruct reference at the given offset in its private data; the calling thread must not have a reference at this offset in its private data (must be NULL).
avctx | an AVCodecContext |
offset | offset of the RefStruct reference in avctx's private data |
FF_THREAD_IS_COPY | if frame-threading is in use and the calling thread is a copy; in this case, the RefStruct reference will be set. |
FF_THREAD_IS_MAIN_THREAD | if frame-threading is in use and the calling thread is the main thread. |
FF_THREAD_NO_FRAME_THREADING | if frame-threading is not in use. |
Definition at line 1752 of file decode.c.
Referenced by wavpack_decode_init().
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Definition at line 1758 of file decode.c.
Referenced by ff_decode_preinit().
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Definition at line 1775 of file decode.c.
Referenced by ff_decode_preinit().
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Definition at line 1783 of file decode.c.
Referenced by ff_decode_preinit().
int ff_decode_preinit | ( | struct AVCodecContext * | avctx | ) |
Perform decoder initialization and validation.
Called when opening the decoder, before the FFCodec.init() call.
Definition at line 1791 of file decode.c.
Referenced by avcodec_open2().
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static |
Check side data preference and clear existing side data from frame if needed.
0 | side data of this type can be added to frame |
1 | side data of this type should not be added to frame |
Definition at line 1918 of file decode.c.
Referenced by ff_decode_content_light_new(), ff_decode_content_light_new_ext(), ff_decode_mastering_display_new(), ff_decode_mastering_display_new_ext(), ff_frame_new_side_data(), and ff_frame_new_side_data_from_buf_ext().
int ff_frame_new_side_data | ( | const AVCodecContext * | avctx, |
AVFrame * | frame, | ||
enum AVFrameSideDataType | type, | ||
size_t | size, | ||
AVFrameSideData ** | sd | ||
) |
Wrapper around av_frame_new_side_data, which rejects side data overridden by the demuxer.
Returns 0 on success, and a negative error code otherwise. If successful and sd is not NULL, *sd may either contain a pointer to the new side data, or NULL in case the side data was already present.
Definition at line 1934 of file decode.c.
Referenced by cri_decode_frame(), decode_frame(), ff_mjpeg_decode_frame_from_buf(), h264_export_frame_props(), mpeg_field_start(), populate_avctx_color_fields(), set_side_data(), tiff_decode_tag(), and webp_decode_frame().
int ff_frame_new_side_data_from_buf_ext | ( | const AVCodecContext * | avctx, |
AVFrameSideData *** | sd, | ||
int * | nb_sd, | ||
enum AVFrameSideDataType | type, | ||
AVBufferRef ** | buf | ||
) |
Same as ff_frame_new_side_data_from_buf
, but taking a AVFrameSideData array directly instead of an AVFrame.
Definition at line 1953 of file decode.c.
Referenced by ff_frame_new_side_data_from_buf(), and h2645_sei_to_side_data().
int ff_frame_new_side_data_from_buf | ( | const AVCodecContext * | avctx, |
AVFrame * | frame, | ||
enum AVFrameSideDataType | type, | ||
AVBufferRef ** | buf, | ||
AVFrameSideData ** | sd | ||
) |
Similar to ff_frame_new_side_data
, but using an existing buffer ref.
*buf is ALWAYS consumed by this function and NULL written in its place, even on failure.
Definition at line 1972 of file decode.c.
Referenced by export_itut_t35(), libdav1d_receive_frame(), libjxl_receive_frame(), mpeg_field_start(), and set_side_data().
int ff_decode_mastering_display_new_ext | ( | const AVCodecContext * | avctx, |
AVFrameSideData *** | sd, | ||
int * | nb_sd, | ||
struct AVMasteringDisplayMetadata ** | mdm | ||
) |
Same as ff_decode_mastering_display_new
, but taking a AVFrameSideData array directly instead of an AVFrame.
Definition at line 1981 of file decode.c.
Referenced by h2645_sei_to_side_data().
int ff_decode_mastering_display_new | ( | const AVCodecContext * | avctx, |
AVFrame * | frame, | ||
struct AVMasteringDisplayMetadata ** | mdm | ||
) |
Wrapper around av_mastering_display_metadata_create_side_data(), which rejects side data overridden by the demuxer.
Returns 0 on success, and a negative error code otherwise. If successful, *mdm may either be a pointer to the new side data, or NULL in case the side data was already present.
Definition at line 2013 of file decode.c.
Referenced by export_metadata(), libdav1d_receive_frame(), and populate_avctx_color_fields().
int ff_decode_content_light_new_ext | ( | const AVCodecContext * | avctx, |
AVFrameSideData *** | sd, | ||
int * | nb_sd, | ||
AVContentLightMetadata ** | clm | ||
) |
Same as ff_decode_content_light_new
, but taking a AVFrameSideData array directly instead of an AVFrame.
Definition at line 2026 of file decode.c.
Referenced by h2645_sei_to_side_data().
int ff_decode_content_light_new | ( | const AVCodecContext * | avctx, |
AVFrame * | frame, | ||
struct AVContentLightMetadata ** | clm | ||
) |
Wrapper around av_content_light_metadata_create_side_data(), which rejects side data overridden by the demuxer.
Returns 0 on success, and a negative error code otherwise. If successful, *clm may either be a pointer to the new side data, or NULL in case the side data was already present.
Definition at line 2058 of file decode.c.
Referenced by export_metadata(), libdav1d_receive_frame(), and populate_avctx_color_fields().
Check whether the side-data of src contains a palette of size AVPALETTE_SIZE; if so, copy it to dst and return 1; else return 0.
Also emit an error message upon encountering a palette with invalid size.
Definition at line 2071 of file decode.c.
Referenced by cinepak_decode_frame(), decode_frame(), gdv_decode_frame(), idcin_decode_frame(), imx_decode_frame(), ipvideo_decode_frame(), msrle_decode_frame(), msvideo1_decode_frame(), qtrle_decode_frame(), raw_decode(), rscc_decode_frame(), and smc_decode_frame().
int ff_hwaccel_frame_priv_alloc | ( | AVCodecContext * | avctx, |
void ** | hwaccel_picture_private | ||
) |
Allocate a hwaccel frame private data if the provided avctx uses a hwaccel method that needs it.
The returned data is a RefStruct reference (if allocated).
avctx | The codec context |
hwaccel_picture_private | Pointer to return hwaccel_picture_private |
Definition at line 2086 of file decode.c.
Referenced by alloc_frame(), alloc_picture(), av1_frame_alloc(), vp8_alloc_frame(), and vp9_frame_alloc().
void ff_decode_flush_buffers | ( | AVCodecContext * | avctx | ) |
Definition at line 2115 of file decode.c.
Referenced by avcodec_flush_buffers().
AVCodecInternal* ff_decode_internal_alloc | ( | void | ) |
Definition at line 2132 of file decode.c.
Referenced by avcodec_open2(), and init_thread().