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frame.h
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1 /*
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16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 /**
20  * @file
21  * @ingroup lavu_frame
22  * reference-counted frame API
23  */
24 
25 #ifndef AVUTIL_FRAME_H
26 #define AVUTIL_FRAME_H
27 
28 #include <stddef.h>
29 #include <stdint.h>
30 
31 #include "avutil.h"
32 #include "buffer.h"
33 #include "dict.h"
34 #include "rational.h"
35 #include "samplefmt.h"
36 #include "pixfmt.h"
37 #include "version.h"
38 
39 
40 /**
41  * @defgroup lavu_frame AVFrame
42  * @ingroup lavu_data
43  *
44  * @{
45  * AVFrame is an abstraction for reference-counted raw multimedia data.
46  */
47 
49  /**
50  * The data is the AVPanScan struct defined in libavcodec.
51  */
53  /**
54  * ATSC A53 Part 4 Closed Captions.
55  * A53 CC bitstream is stored as uint8_t in AVFrameSideData.data.
56  * The number of bytes of CC data is AVFrameSideData.size.
57  */
59  /**
60  * Stereoscopic 3d metadata.
61  * The data is the AVStereo3D struct defined in libavutil/stereo3d.h.
62  */
64  /**
65  * The data is the AVMatrixEncoding enum defined in libavutil/channel_layout.h.
66  */
68  /**
69  * Metadata relevant to a downmix procedure.
70  * The data is the AVDownmixInfo struct defined in libavutil/downmix_info.h.
71  */
73  /**
74  * ReplayGain information in the form of the AVReplayGain struct.
75  */
77  /**
78  * This side data contains a 3x3 transformation matrix describing an affine
79  * transformation that needs to be applied to the frame for correct
80  * presentation.
81  *
82  * See libavutil/display.h for a detailed description of the data.
83  */
85  /**
86  * Active Format Description data consisting of a single byte as specified
87  * in ETSI TS 101 154 using AVActiveFormatDescription enum.
88  */
90  /**
91  * Motion vectors exported by some codecs (on demand through the export_mvs
92  * flag set in the libavcodec AVCodecContext flags2 option).
93  * The data is the AVMotionVector struct defined in
94  * libavutil/motion_vector.h.
95  */
97  /**
98  * Recommmends skipping the specified number of samples. This is exported
99  * only if the "skip_manual" AVOption is set in libavcodec.
100  * This has the same format as AV_PKT_DATA_SKIP_SAMPLES.
101  * @code
102  * u32le number of samples to skip from start of this packet
103  * u32le number of samples to skip from end of this packet
104  * u8 reason for start skip
105  * u8 reason for end skip (0=padding silence, 1=convergence)
106  * @endcode
107  */
109  /**
110  * This side data must be associated with an audio frame and corresponds to
111  * enum AVAudioServiceType defined in avcodec.h.
112  */
114  /**
115  * Mastering display metadata associated with a video frame. The payload is
116  * an AVMasteringDisplayMetadata type and contains information about the
117  * mastering display color volume.
118  */
120  /**
121  * The GOP timecode in 25 bit timecode format. Data format is 64-bit integer.
122  * This is set on the first frame of a GOP that has a temporal reference of 0.
123  */
125 
126  /**
127  * The data represents the AVSphericalMapping structure defined in
128  * libavutil/spherical.h.
129  */
131 
132  /**
133  * Content light level (based on CTA-861.3). This payload contains data in
134  * the form of the AVContentLightMetadata struct.
135  */
137 
138  /**
139  * The data contains an ICC profile as an opaque octet buffer following the
140  * format described by ISO 15076-1 with an optional name defined in the
141  * metadata key entry "name".
142  */
144 };
145 
154 };
155 
156 
157 /**
158  * Structure to hold side data for an AVFrame.
159  *
160  * sizeof(AVFrameSideData) is not a part of the public ABI, so new fields may be added
161  * to the end with a minor bump.
162  */
163 typedef struct AVFrameSideData {
166  int size;
170 
171 /**
172  * This structure describes decoded (raw) audio or video data.
173  *
174  * AVFrame must be allocated using av_frame_alloc(). Note that this only
175  * allocates the AVFrame itself, the buffers for the data must be managed
176  * through other means (see below).
177  * AVFrame must be freed with av_frame_free().
178  *
179  * AVFrame is typically allocated once and then reused multiple times to hold
180  * different data (e.g. a single AVFrame to hold frames received from a
181  * decoder). In such a case, av_frame_unref() will free any references held by
182  * the frame and reset it to its original clean state before it
183  * is reused again.
184  *
185  * The data described by an AVFrame is usually reference counted through the
186  * AVBuffer API. The underlying buffer references are stored in AVFrame.buf /
187  * AVFrame.extended_buf. An AVFrame is considered to be reference counted if at
188  * least one reference is set, i.e. if AVFrame.buf[0] != NULL. In such a case,
189  * every single data plane must be contained in one of the buffers in
190  * AVFrame.buf or AVFrame.extended_buf.
191  * There may be a single buffer for all the data, or one separate buffer for
192  * each plane, or anything in between.
193  *
194  * sizeof(AVFrame) is not a part of the public ABI, so new fields may be added
195  * to the end with a minor bump.
196  *
197  * Fields can be accessed through AVOptions, the name string used, matches the
198  * C structure field name for fields accessible through AVOptions. The AVClass
199  * for AVFrame can be obtained from avcodec_get_frame_class()
200  */
201 typedef struct AVFrame {
202 #define AV_NUM_DATA_POINTERS 8
203  /**
204  * pointer to the picture/channel planes.
205  * This might be different from the first allocated byte
206  *
207  * Some decoders access areas outside 0,0 - width,height, please
208  * see avcodec_align_dimensions2(). Some filters and swscale can read
209  * up to 16 bytes beyond the planes, if these filters are to be used,
210  * then 16 extra bytes must be allocated.
211  *
212  * NOTE: Except for hwaccel formats, pointers not needed by the format
213  * MUST be set to NULL.
214  */
216 
217  /**
218  * For video, size in bytes of each picture line.
219  * For audio, size in bytes of each plane.
220  *
221  * For audio, only linesize[0] may be set. For planar audio, each channel
222  * plane must be the same size.
223  *
224  * For video the linesizes should be multiples of the CPUs alignment
225  * preference, this is 16 or 32 for modern desktop CPUs.
226  * Some code requires such alignment other code can be slower without
227  * correct alignment, for yet other it makes no difference.
228  *
229  * @note The linesize may be larger than the size of usable data -- there
230  * may be extra padding present for performance reasons.
231  */
233 
234  /**
235  * pointers to the data planes/channels.
236  *
237  * For video, this should simply point to data[].
238  *
239  * For planar audio, each channel has a separate data pointer, and
240  * linesize[0] contains the size of each channel buffer.
241  * For packed audio, there is just one data pointer, and linesize[0]
242  * contains the total size of the buffer for all channels.
243  *
244  * Note: Both data and extended_data should always be set in a valid frame,
245  * but for planar audio with more channels that can fit in data,
246  * extended_data must be used in order to access all channels.
247  */
249 
250  /**
251  * @name Video dimensions
252  * Video frames only. The coded dimensions (in pixels) of the video frame,
253  * i.e. the size of the rectangle that contains some well-defined values.
254  *
255  * @note The part of the frame intended for display/presentation is further
256  * restricted by the @ref cropping "Cropping rectangle".
257  * @{
258  */
259  int width, height;
260  /**
261  * @}
262  */
263 
264  /**
265  * number of audio samples (per channel) described by this frame
266  */
268 
269  /**
270  * format of the frame, -1 if unknown or unset
271  * Values correspond to enum AVPixelFormat for video frames,
272  * enum AVSampleFormat for audio)
273  */
274  int format;
275 
276  /**
277  * 1 -> keyframe, 0-> not
278  */
280 
281  /**
282  * Picture type of the frame.
283  */
285 
286  /**
287  * Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
288  */
290 
291  /**
292  * Presentation timestamp in time_base units (time when frame should be shown to user).
293  */
294  int64_t pts;
295 
296 #if FF_API_PKT_PTS
297  /**
298  * PTS copied from the AVPacket that was decoded to produce this frame.
299  * @deprecated use the pts field instead
300  */
302  int64_t pkt_pts;
303 #endif
304 
305  /**
306  * DTS copied from the AVPacket that triggered returning this frame. (if frame threading isn't used)
307  * This is also the Presentation time of this AVFrame calculated from
308  * only AVPacket.dts values without pts values.
309  */
310  int64_t pkt_dts;
311 
312  /**
313  * picture number in bitstream order
314  */
316  /**
317  * picture number in display order
318  */
320 
321  /**
322  * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
323  */
324  int quality;
325 
326  /**
327  * for some private data of the user
328  */
329  void *opaque;
330 
331 #if FF_API_ERROR_FRAME
332  /**
333  * @deprecated unused
334  */
337 #endif
338 
339  /**
340  * When decoding, this signals how much the picture must be delayed.
341  * extra_delay = repeat_pict / (2*fps)
342  */
344 
345  /**
346  * The content of the picture is interlaced.
347  */
349 
350  /**
351  * If the content is interlaced, is top field displayed first.
352  */
354 
355  /**
356  * Tell user application that palette has changed from previous frame.
357  */
359 
360  /**
361  * reordered opaque 64 bits (generally an integer or a double precision float
362  * PTS but can be anything).
363  * The user sets AVCodecContext.reordered_opaque to represent the input at
364  * that time,
365  * the decoder reorders values as needed and sets AVFrame.reordered_opaque
366  * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque
367  * @deprecated in favor of pkt_pts
368  */
370 
371  /**
372  * Sample rate of the audio data.
373  */
375 
376  /**
377  * Channel layout of the audio data.
378  */
379  uint64_t channel_layout;
380 
381  /**
382  * AVBuffer references backing the data for this frame. If all elements of
383  * this array are NULL, then this frame is not reference counted. This array
384  * must be filled contiguously -- if buf[i] is non-NULL then buf[j] must
385  * also be non-NULL for all j < i.
386  *
387  * There may be at most one AVBuffer per data plane, so for video this array
388  * always contains all the references. For planar audio with more than
389  * AV_NUM_DATA_POINTERS channels, there may be more buffers than can fit in
390  * this array. Then the extra AVBufferRef pointers are stored in the
391  * extended_buf array.
392  */
394 
395  /**
396  * For planar audio which requires more than AV_NUM_DATA_POINTERS
397  * AVBufferRef pointers, this array will hold all the references which
398  * cannot fit into AVFrame.buf.
399  *
400  * Note that this is different from AVFrame.extended_data, which always
401  * contains all the pointers. This array only contains the extra pointers,
402  * which cannot fit into AVFrame.buf.
403  *
404  * This array is always allocated using av_malloc() by whoever constructs
405  * the frame. It is freed in av_frame_unref().
406  */
408  /**
409  * Number of elements in extended_buf.
410  */
412 
415 
416 /**
417  * @defgroup lavu_frame_flags AV_FRAME_FLAGS
418  * @ingroup lavu_frame
419  * Flags describing additional frame properties.
420  *
421  * @{
422  */
423 
424 /**
425  * The frame data may be corrupted, e.g. due to decoding errors.
426  */
427 #define AV_FRAME_FLAG_CORRUPT (1 << 0)
428 /**
429  * A flag to mark the frames which need to be decoded, but shouldn't be output.
430  */
431 #define AV_FRAME_FLAG_DISCARD (1 << 2)
432 /**
433  * @}
434  */
435 
436  /**
437  * Frame flags, a combination of @ref lavu_frame_flags
438  */
439  int flags;
440 
441  /**
442  * MPEG vs JPEG YUV range.
443  * - encoding: Set by user
444  * - decoding: Set by libavcodec
445  */
447 
449 
451 
452  /**
453  * YUV colorspace type.
454  * - encoding: Set by user
455  * - decoding: Set by libavcodec
456  */
458 
460 
461  /**
462  * frame timestamp estimated using various heuristics, in stream time base
463  * - encoding: unused
464  * - decoding: set by libavcodec, read by user.
465  */
467 
468  /**
469  * reordered pos from the last AVPacket that has been input into the decoder
470  * - encoding: unused
471  * - decoding: Read by user.
472  */
473  int64_t pkt_pos;
474 
475  /**
476  * duration of the corresponding packet, expressed in
477  * AVStream->time_base units, 0 if unknown.
478  * - encoding: unused
479  * - decoding: Read by user.
480  */
481  int64_t pkt_duration;
482 
483  /**
484  * metadata.
485  * - encoding: Set by user.
486  * - decoding: Set by libavcodec.
487  */
489 
490  /**
491  * decode error flags of the frame, set to a combination of
492  * FF_DECODE_ERROR_xxx flags if the decoder produced a frame, but there
493  * were errors during the decoding.
494  * - encoding: unused
495  * - decoding: set by libavcodec, read by user.
496  */
498 #define FF_DECODE_ERROR_INVALID_BITSTREAM 1
499 #define FF_DECODE_ERROR_MISSING_REFERENCE 2
500 
501  /**
502  * number of audio channels, only used for audio.
503  * - encoding: unused
504  * - decoding: Read by user.
505  */
506  int channels;
507 
508  /**
509  * size of the corresponding packet containing the compressed
510  * frame.
511  * It is set to a negative value if unknown.
512  * - encoding: unused
513  * - decoding: set by libavcodec, read by user.
514  */
515  int pkt_size;
516 
517 #if FF_API_FRAME_QP
518  /**
519  * QP table
520  */
522  int8_t *qscale_table;
523  /**
524  * QP store stride
525  */
527  int qstride;
528 
531 
533 #endif
534  /**
535  * For hwaccel-format frames, this should be a reference to the
536  * AVHWFramesContext describing the frame.
537  */
539 
540  /**
541  * AVBufferRef for free use by the API user. FFmpeg will never check the
542  * contents of the buffer ref. FFmpeg calls av_buffer_unref() on it when
543  * the frame is unreferenced. av_frame_copy_props() calls create a new
544  * reference with av_buffer_ref() for the target frame's opaque_ref field.
545  *
546  * This is unrelated to the opaque field, although it serves a similar
547  * purpose.
548  */
550 
551  /**
552  * @anchor cropping
553  * @name Cropping
554  * Video frames only. The number of pixels to discard from the the
555  * top/bottom/left/right border of the frame to obtain the sub-rectangle of
556  * the frame intended for presentation.
557  * @{
558  */
559  size_t crop_top;
560  size_t crop_bottom;
561  size_t crop_left;
562  size_t crop_right;
563  /**
564  * @}
565  */
566 } AVFrame;
567 
568 /**
569  * Accessors for some AVFrame fields. These used to be provided for ABI
570  * compatibility, and do not need to be used anymore.
571  */
574 int64_t av_frame_get_pkt_duration (const AVFrame *frame);
575 void av_frame_set_pkt_duration (AVFrame *frame, int64_t val);
576 int64_t av_frame_get_pkt_pos (const AVFrame *frame);
577 void av_frame_set_pkt_pos (AVFrame *frame, int64_t val);
578 int64_t av_frame_get_channel_layout (const AVFrame *frame);
580 int av_frame_get_channels (const AVFrame *frame);
591 #if FF_API_FRAME_QP
592 int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type);
594 #endif
599 
600 /**
601  * Get the name of a colorspace.
602  * @return a static string identifying the colorspace; can be NULL.
603  */
604 const char *av_get_colorspace_name(enum AVColorSpace val);
605 
606 /**
607  * Allocate an AVFrame and set its fields to default values. The resulting
608  * struct must be freed using av_frame_free().
609  *
610  * @return An AVFrame filled with default values or NULL on failure.
611  *
612  * @note this only allocates the AVFrame itself, not the data buffers. Those
613  * must be allocated through other means, e.g. with av_frame_get_buffer() or
614  * manually.
615  */
616 AVFrame *av_frame_alloc(void);
617 
618 /**
619  * Free the frame and any dynamically allocated objects in it,
620  * e.g. extended_data. If the frame is reference counted, it will be
621  * unreferenced first.
622  *
623  * @param frame frame to be freed. The pointer will be set to NULL.
624  */
625 void av_frame_free(AVFrame **frame);
626 
627 /**
628  * Set up a new reference to the data described by the source frame.
629  *
630  * Copy frame properties from src to dst and create a new reference for each
631  * AVBufferRef from src.
632  *
633  * If src is not reference counted, new buffers are allocated and the data is
634  * copied.
635  *
636  * @warning: dst MUST have been either unreferenced with av_frame_unref(dst),
637  * or newly allocated with av_frame_alloc() before calling this
638  * function, or undefined behavior will occur.
639  *
640  * @return 0 on success, a negative AVERROR on error
641  */
642 int av_frame_ref(AVFrame *dst, const AVFrame *src);
643 
644 /**
645  * Create a new frame that references the same data as src.
646  *
647  * This is a shortcut for av_frame_alloc()+av_frame_ref().
648  *
649  * @return newly created AVFrame on success, NULL on error.
650  */
652 
653 /**
654  * Unreference all the buffers referenced by frame and reset the frame fields.
655  */
657 
658 /**
659  * Move everything contained in src to dst and reset src.
660  *
661  * @warning: dst is not unreferenced, but directly overwritten without reading
662  * or deallocating its contents. Call av_frame_unref(dst) manually
663  * before calling this function to ensure that no memory is leaked.
664  */
665 void av_frame_move_ref(AVFrame *dst, AVFrame *src);
666 
667 /**
668  * Allocate new buffer(s) for audio or video data.
669  *
670  * The following fields must be set on frame before calling this function:
671  * - format (pixel format for video, sample format for audio)
672  * - width and height for video
673  * - nb_samples and channel_layout for audio
674  *
675  * This function will fill AVFrame.data and AVFrame.buf arrays and, if
676  * necessary, allocate and fill AVFrame.extended_data and AVFrame.extended_buf.
677  * For planar formats, one buffer will be allocated for each plane.
678  *
679  * @warning: if frame already has been allocated, calling this function will
680  * leak memory. In addition, undefined behavior can occur in certain
681  * cases.
682  *
683  * @param frame frame in which to store the new buffers.
684  * @param align required buffer size alignment
685  *
686  * @return 0 on success, a negative AVERROR on error.
687  */
689 
690 /**
691  * Check if the frame data is writable.
692  *
693  * @return A positive value if the frame data is writable (which is true if and
694  * only if each of the underlying buffers has only one reference, namely the one
695  * stored in this frame). Return 0 otherwise.
696  *
697  * If 1 is returned the answer is valid until av_buffer_ref() is called on any
698  * of the underlying AVBufferRefs (e.g. through av_frame_ref() or directly).
699  *
700  * @see av_frame_make_writable(), av_buffer_is_writable()
701  */
703 
704 /**
705  * Ensure that the frame data is writable, avoiding data copy if possible.
706  *
707  * Do nothing if the frame is writable, allocate new buffers and copy the data
708  * if it is not.
709  *
710  * @return 0 on success, a negative AVERROR on error.
711  *
712  * @see av_frame_is_writable(), av_buffer_is_writable(),
713  * av_buffer_make_writable()
714  */
716 
717 /**
718  * Copy the frame data from src to dst.
719  *
720  * This function does not allocate anything, dst must be already initialized and
721  * allocated with the same parameters as src.
722  *
723  * This function only copies the frame data (i.e. the contents of the data /
724  * extended data arrays), not any other properties.
725  *
726  * @return >= 0 on success, a negative AVERROR on error.
727  */
728 int av_frame_copy(AVFrame *dst, const AVFrame *src);
729 
730 /**
731  * Copy only "metadata" fields from src to dst.
732  *
733  * Metadata for the purpose of this function are those fields that do not affect
734  * the data layout in the buffers. E.g. pts, sample rate (for audio) or sample
735  * aspect ratio (for video), but not width/height or channel layout.
736  * Side data is also copied.
737  */
738 int av_frame_copy_props(AVFrame *dst, const AVFrame *src);
739 
740 /**
741  * Get the buffer reference a given data plane is stored in.
742  *
743  * @param plane index of the data plane of interest in frame->extended_data.
744  *
745  * @return the buffer reference that contains the plane or NULL if the input
746  * frame is not valid.
747  */
749 
750 /**
751  * Add a new side data to a frame.
752  *
753  * @param frame a frame to which the side data should be added
754  * @param type type of the added side data
755  * @param size size of the side data
756  *
757  * @return newly added side data on success, NULL on error
758  */
761  int size);
762 
763 /**
764  * @return a pointer to the side data of a given type on success, NULL if there
765  * is no side data with such type in this frame.
766  */
769 
770 /**
771  * If side data of the supplied type exists in the frame, free it and remove it
772  * from the frame.
773  */
775 
776 
777 /**
778  * Flags for frame cropping.
779  */
780 enum {
781  /**
782  * Apply the maximum possible cropping, even if it requires setting the
783  * AVFrame.data[] entries to unaligned pointers. Passing unaligned data
784  * to Libav API is generally not allowed, and causes undefined behavior
785  * (such as crashes). You can pass unaligned data only to Libav APIs that
786  * are explicitly documented to accept it. Use this flag only if you
787  * absolutely know what you are doing.
788  */
790 };
791 
792 /**
793  * Crop the given video AVFrame according to its crop_left/crop_top/crop_right/
794  * crop_bottom fields. If cropping is successful, the function will adjust the
795  * data pointers and the width/height fields, and set the crop fields to 0.
796  *
797  * In all cases, the cropping boundaries will be rounded to the inherent
798  * alignment of the pixel format. In some cases, such as for opaque hwaccel
799  * formats, the left/top cropping is ignored. The crop fields are set to 0 even
800  * if the cropping was rounded or ignored.
801  *
802  * @param frame the frame which should be cropped
803  * @param flags Some combination of AV_FRAME_CROP_* flags, or 0.
804  *
805  * @return >= 0 on success, a negative AVERROR on error. If the cropping fields
806  * were invalid, AVERROR(ERANGE) is returned, and nothing is changed.
807  */
809 
810 /**
811  * @return a string identifying the side data type
812  */
814 
815 /**
816  * @}
817  */
818 
819 #endif /* AVUTIL_FRAME_H */
int plane
Definition: avisynth_c.h:422
void av_frame_set_channels(AVFrame *frame, int val)
const char const char void * val
Definition: avisynth_c.h:771
int av_frame_get_sample_rate(const AVFrame *frame)
#define AV_NUM_DATA_POINTERS
Definition: frame.h:202
int64_t av_frame_get_pkt_duration(const AVFrame *frame)
int av_frame_get_pkt_size(const AVFrame *frame)
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:113
attribute_deprecated int qscale_type
Definition: frame.h:530
int64_t pkt_pos
reordered pos from the last AVPacket that has been input into the decoder
Definition: frame.h:473
enum AVColorRange av_frame_get_color_range(const AVFrame *frame)
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:393
AVDictionary * metadata
Definition: frame.h:167
void * opaque
for some private data of the user
Definition: frame.h:329
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:411
Content light level (based on CTA-861.3).
Definition: frame.h:136
int repeat_pict
When decoding, this signals how much the picture must be delayed.
Definition: frame.h:343
int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int type)
Definition: frame.c:54
Convenience header that includes libavutil's core.
void av_frame_set_pkt_duration(AVFrame *frame, int64_t val)
Mastering display metadata associated with a video frame.
Definition: frame.h:119
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:528
size_t crop_bottom
Definition: frame.h:560
#define src
Definition: vp8dsp.c:254
void av_frame_set_pkt_size(AVFrame *frame, int val)
int8_t * av_frame_get_qp_table(AVFrame *f, int *stride, int *type)
Definition: frame.c:69
attribute_deprecated int8_t * qscale_table
QP table.
Definition: frame.h:522
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:448
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:679
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame...
Definition: frame.h:538
Public dictionary API.
uint8_t
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:477
size_t crop_left
Definition: frame.h:561
attribute_deprecated int qstride
QP store stride.
Definition: frame.h:527
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:392
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:294
AVBufferRef * buf
Definition: frame.h:168
The data is the AVPanScan struct defined in libavcodec.
Definition: frame.h:52
static AVFrame * frame
Structure to hold side data for an AVFrame.
Definition: frame.h:163
static int flags
Definition: log.c:57
void av_frame_set_metadata(AVFrame *frame, AVDictionary *val)
AVDictionary * metadata
metadata.
Definition: frame.h:488
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:348
void av_frame_set_best_effort_timestamp(AVFrame *frame, int64_t val)
AVColorRange
MPEG vs JPEG YUV range.
Definition: pixfmt.h:500
ptrdiff_t size
Definition: opengl_enc.c:101
int64_t av_frame_get_best_effort_timestamp(const AVFrame *frame)
Accessors for some AVFrame fields.
The data represents the AVSphericalMapping structure defined in libavutil/spherical.h.
Definition: frame.h:130
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:424
Active Format Description data consisting of a single byte as specified in ETSI TS 101 154 using AVAc...
Definition: frame.h:89
Metadata relevant to a downmix procedure.
Definition: frame.h:72
int nb_side_data
Definition: frame.h:414
attribute_deprecated uint64_t error[AV_NUM_DATA_POINTERS]
Definition: frame.h:336
AVFrameSideData ** side_data
Definition: frame.h:413
void av_frame_set_color_range(AVFrame *frame, enum AVColorRange val)
void av_frame_set_channel_layout(AVFrame *frame, int64_t val)
int width
Definition: frame.h:259
int av_frame_apply_cropping(AVFrame *frame, int flags)
Crop the given video AVFrame according to its crop_left/crop_top/crop_right/ crop_bottom fields...
Definition: frame.c:818
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
void av_frame_set_colorspace(AVFrame *frame, enum AVColorSpace val)
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:446
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
int av_frame_get_decode_error_flags(const AVFrame *frame)
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:457
Libavutil version macros.
The GOP timecode in 25 bit timecode format.
Definition: frame.h:124
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:737
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:379
size_t crop_top
Definition: frame.h:559
int channels
number of audio channels, only used for audio.
Definition: frame.h:506
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:439
int display_picture_number
picture number in display order
Definition: frame.h:319
AVBufferRef ** extended_buf
For planar audio which requires more than AV_NUM_DATA_POINTERS AVBufferRef pointers, this array will hold all the references which cannot fit into AVFrame.buf.
Definition: frame.h:407
Motion vectors exported by some codecs (on demand through the export_mvs flag set in the libavcodec A...
Definition: frame.h:96
AVBufferRef * av_frame_get_plane_buffer(AVFrame *frame, int plane)
Get the buffer reference a given data plane is stored in.
Definition: frame.c:605
void av_frame_set_pkt_pos(AVFrame *frame, int64_t val)
AVBufferRef * qp_table_buf
Definition: frame.h:532
AVFrameSideDataType
Definition: frame.h:48
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:324
The data contains an ICC profile as an opaque octet buffer following the format described by ISO 1507...
Definition: frame.h:143
const char * av_get_colorspace_name(enum AVColorSpace val)
Get the name of a colorspace.
Definition: frame.c:83
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:489
const AVS_VideoInfo int align
Definition: avisynth_c.h:795
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:274
int coded_picture_number
picture number in bitstream order
Definition: frame.h:315
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown...
Definition: frame.h:481
AVDictionary ** avpriv_frame_get_metadatap(AVFrame *frame)
Definition: frame.c:51
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:540
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:289
uint8_t * data
Definition: frame.h:165
void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type)
If side data of the supplied type exists in the frame, free it and remove it from the frame...
Definition: frame.c:750
void * buf
Definition: avisynth_c.h:690
size_t crop_right
Definition: frame.h:562
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
Definition: frame.h:789
GLint GLenum type
Definition: opengl_enc.c:105
AVDictionary * av_frame_get_metadata(const AVFrame *frame)
int64_t reordered_opaque
reordered opaque 64 bits (generally an integer or a double precision float PTS but can be anything)...
Definition: frame.h:369
enum AVColorSpace av_frame_get_colorspace(const AVFrame *frame)
int sample_rate
Sample rate of the audio data.
Definition: frame.h:374
int av_frame_get_channels(const AVFrame *frame)
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:671
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int palette_has_changed
Tell user application that palette has changed from previous frame.
Definition: frame.h:358
refcounted data buffer API
void av_frame_set_decode_error_flags(AVFrame *frame, int val)
AVPictureType
Definition: avutil.h:272
enum AVChromaLocation chroma_location
Definition: frame.h:459
int64_t best_effort_timestamp
frame timestamp estimated using various heuristics, in stream time base
Definition: frame.h:466
AVActiveFormatDescription
Definition: frame.h:146
int decode_error_flags
decode error flags of the frame, set to a combination of FF_DECODE_ERROR_xxx flags if the decoder pro...
Definition: frame.h:497
int64_t av_frame_get_channel_layout(const AVFrame *frame)
const char * av_frame_side_data_name(enum AVFrameSideDataType type)
Definition: frame.c:764
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
Definition: frame.c:280
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:502
enum AVFrameSideDataType type
Definition: frame.h:164
int av_frame_make_writable(AVFrame *frame)
Ensure that the frame data is writable, avoiding data copy if possible.
Definition: frame.c:557
#define attribute_deprecated
Definition: attributes.h:94
attribute_deprecated int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
Definition: frame.h:302
int64_t pkt_dts
DTS copied from the AVPacket that triggered returning this frame.
Definition: frame.h:310
A reference to a data buffer.
Definition: buffer.h:81
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
Utilties for rational number calculation.
pixel format definitions
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:353
AVBufferRef * opaque_ref
AVBufferRef for free use by the API user.
Definition: frame.h:549
int64_t av_frame_get_pkt_pos(const AVFrame *frame)
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
void av_frame_set_sample_rate(AVFrame *frame, int val)
enum AVColorPrimaries color_primaries
Definition: frame.h:448
int height
Definition: frame.h:259
AVChromaLocation
Location of chroma samples.
Definition: pixfmt.h:522
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:450
Recommmends skipping the specified number of samples.
Definition: frame.h:108
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:248
int pkt_size
size of the corresponding packet containing the compressed frame.
Definition: frame.h:515
Stereoscopic 3d metadata.
Definition: frame.h:63
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:267
The data is the AVMatrixEncoding enum defined in libavutil/channel_layout.h.
Definition: frame.h:67
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:600