7ecc2d40 |
/* |
c4e88217 |
* This file is part of FFmpeg. |
7ecc2d40 |
* |
c4e88217 |
* FFmpeg is free software; you can redistribute it and/or |
7ecc2d40 |
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* |
c4e88217 |
* FFmpeg is distributed in the hope that it will be useful, |
7ecc2d40 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public |
c4e88217 |
* License along with FFmpeg; if not, write to the Free Software |
7ecc2d40 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
|
ff23c4e4 |
/**
* @file
* @ingroup lavu_frame
* reference-counted frame API
*/
|
7ecc2d40 |
#ifndef AVUTIL_FRAME_H
#define AVUTIL_FRAME_H
#include <stdint.h>
#include "avutil.h"
#include "buffer.h" |
77b2cd7b |
#include "dict.h" |
7ecc2d40 |
#include "rational.h"
#include "samplefmt.h" |
8c02adc6 |
#include "pixfmt.h" |
02b9fafc |
#include "version.h" |
7ecc2d40 |
|
ff23c4e4 |
/**
* @defgroup lavu_frame AVFrame
* @ingroup lavu_data
*
* @{
* AVFrame is an abstraction for reference-counted raw multimedia data.
*/
|
77b2cd7b |
enum AVFrameSideDataType {
/**
* The data is the AVPanScan struct defined in libavcodec.
*/
AV_FRAME_DATA_PANSCAN, |
1eaac1d6 |
/**
* ATSC A53 Part 4 Closed Captions.
* A53 CC bitstream is stored as uint8_t in AVFrameSideData.data.
* The number of bytes of CC data is AVFrameSideData.size.
*/
AV_FRAME_DATA_A53_CC, |
7e244c68 |
/**
* Stereoscopic 3d metadata.
* The data is the AVStereo3D struct defined in libavutil/stereo3d.h.
*/
AV_FRAME_DATA_STEREO3D, |
5b4797a2 |
/**
* The data is the AVMatrixEncoding enum defined in libavutil/channel_layout.h.
*/
AV_FRAME_DATA_MATRIXENCODING, |
c98f3169 |
/**
* Metadata relevant to a downmix procedure.
* The data is the AVDownmixInfo struct defined in libavutil/downmix_info.h.
*/
AV_FRAME_DATA_DOWNMIX_INFO, |
5a7e35dd |
/**
* ReplayGain information in the form of the AVReplayGain struct.
*/
AV_FRAME_DATA_REPLAYGAIN, |
bddd8cbf |
/**
* This side data contains a 3x3 transformation matrix describing an affine
* transformation that needs to be applied to the frame for correct
* presentation.
*
* See libavutil/display.h for a detailed description of the data.
*/
AV_FRAME_DATA_DISPLAYMATRIX, |
2a3c36e9 |
/** |
1ef9e837 |
* Active Format Description data consisting of a single byte as specified |
71d008eb |
* in ETSI TS 101 154 using AVActiveFormatDescription enum. |
2a3c36e9 |
*/
AV_FRAME_DATA_AFD, |
b0352b19 |
/**
* Motion vectors exported by some codecs (on demand through the export_mvs
* flag set in the libavcodec AVCodecContext flags2 option).
* The data is the AVMotionVector struct defined in
* libavutil/motion_vector.h.
*/
AV_FRAME_DATA_MOTION_VECTORS, |
cdd6f059 |
/**
* Recommmends skipping the specified number of samples. This is exported
* only if the "skip_manual" AVOption is set in libavcodec.
* This has the same format as AV_PKT_DATA_SKIP_SAMPLES.
* @code
* u32le number of samples to skip from start of this packet
* u32le number of samples to skip from end of this packet
* u8 reason for start skip
* u8 reason for end skip (0=padding silence, 1=convergence)
* @endcode
*/
AV_FRAME_DATA_SKIP_SAMPLES, |
728685f3 |
/**
* This side data must be associated with an audio frame and corresponds to
* enum AVAudioServiceType defined in avcodec.h.
*/
AV_FRAME_DATA_AUDIO_SERVICE_TYPE, |
d9171810 |
/**
* Mastering display metadata associated with a video frame. The payload is
* an AVMasteringDisplayMetadata type and contains information about the
* mastering display color volume.
*/ |
66e9d2f4 |
AV_FRAME_DATA_MASTERING_DISPLAY_METADATA,
/**
* The GOP timecode in 25 bit timecode format. Data format is 64-bit integer.
* This is set on the first frame of a GOP that has a temporal reference of 0.
*/
AV_FRAME_DATA_GOP_TIMECODE |
2a3c36e9 |
};
|
1ef9e837 |
enum AVActiveFormatDescription {
AV_AFD_SAME = 8,
AV_AFD_4_3 = 9,
AV_AFD_16_9 = 10,
AV_AFD_14_9 = 11, |
2a3c36e9 |
AV_AFD_4_3_SP_14_9 = 13,
AV_AFD_16_9_SP_14_9 = 14, |
1ef9e837 |
AV_AFD_SP_4_3 = 15, |
77b2cd7b |
};
|
744c9b49 |
/**
* Structure to hold side data for an AVFrame.
*
* sizeof(AVFrameSideData) is not a part of the public ABI, so new fields may be added
* to the end with a minor bump.
*/ |
77b2cd7b |
typedef struct AVFrameSideData {
enum AVFrameSideDataType type;
uint8_t *data;
int size;
AVDictionary *metadata; |
589a6042 |
AVBufferRef *buf; |
77b2cd7b |
} AVFrameSideData; |
7ecc2d40 |
/**
* This structure describes decoded (raw) audio or video data.
* |
e5306115 |
* AVFrame must be allocated using av_frame_alloc(). Note that this only |
7ecc2d40 |
* allocates the AVFrame itself, the buffers for the data must be managed
* through other means (see below).
* AVFrame must be freed with av_frame_free().
*
* AVFrame is typically allocated once and then reused multiple times to hold
* different data (e.g. a single AVFrame to hold frames received from a
* decoder). In such a case, av_frame_unref() will free any references held by
* the frame and reset it to its original clean state before it
* is reused again.
*
* The data described by an AVFrame is usually reference counted through the
* AVBuffer API. The underlying buffer references are stored in AVFrame.buf /
* AVFrame.extended_buf. An AVFrame is considered to be reference counted if at
* least one reference is set, i.e. if AVFrame.buf[0] != NULL. In such a case,
* every single data plane must be contained in one of the buffers in
* AVFrame.buf or AVFrame.extended_buf.
* There may be a single buffer for all the data, or one separate buffer for
* each plane, or anything in between.
*
* sizeof(AVFrame) is not a part of the public ABI, so new fields may be added
* to the end with a minor bump. |
c4e88217 |
* Similarly fields that are marked as to be only accessed by
* av_opt_ptr() can be reordered. This allows 2 forks to add fields
* without breaking compatibility with each other. |
003a9e48 |
*
* Fields can be accessed through AVOptions, the name string used, matches the
* C structure field name for fields accessable through AVOptions. The AVClass
* for AVFrame can be obtained from avcodec_get_frame_class() |
7ecc2d40 |
*/
typedef struct AVFrame {
#define AV_NUM_DATA_POINTERS 8
/**
* pointer to the picture/channel planes.
* This might be different from the first allocated byte |
3dc25c3a |
*
* Some decoders access areas outside 0,0 - width,height, please
* see avcodec_align_dimensions2(). Some filters and swscale can read
* up to 16 bytes beyond the planes, if these filters are to be used,
* then 16 extra bytes must be allocated. |
4dd4d535 |
*
* NOTE: Except for hwaccel formats, pointers not needed by the format
* MUST be set to NULL. |
7ecc2d40 |
*/
uint8_t *data[AV_NUM_DATA_POINTERS];
/**
* For video, size in bytes of each picture line.
* For audio, size in bytes of each plane.
*
* For audio, only linesize[0] may be set. For planar audio, each channel
* plane must be the same size. |
3dc25c3a |
* |
8c1b942a |
* For video the linesizes should be multiples of the CPUs alignment |
fbd3ee91 |
* preference, this is 16 or 32 for modern desktop CPUs. |
3dc25c3a |
* Some code requires such alignment other code can be slower without
* correct alignment, for yet other it makes no difference. |
945c7e39 |
* |
38e15df1 |
* @note The linesize may be larger than the size of usable data -- there
* may be extra padding present for performance reasons. |
7ecc2d40 |
*/
int linesize[AV_NUM_DATA_POINTERS];
/**
* pointers to the data planes/channels.
*
* For video, this should simply point to data[].
*
* For planar audio, each channel has a separate data pointer, and
* linesize[0] contains the size of each channel buffer.
* For packed audio, there is just one data pointer, and linesize[0]
* contains the total size of the buffer for all channels.
*
* Note: Both data and extended_data should always be set in a valid frame,
* but for planar audio with more channels that can fit in data,
* extended_data must be used in order to access all channels.
*/
uint8_t **extended_data;
/**
* width and height of the video frame
*/
int width, height;
/**
* number of audio samples (per channel) described by this frame
*/
int nb_samples;
/**
* format of the frame, -1 if unknown or unset
* Values correspond to enum AVPixelFormat for video frames,
* enum AVSampleFormat for audio)
*/
int format;
/**
* 1 -> keyframe, 0-> not
*/
int key_frame;
/**
* Picture type of the frame.
*/
enum AVPictureType pict_type;
/**
* Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
*/
AVRational sample_aspect_ratio;
/**
* Presentation timestamp in time_base units (time when frame should be shown to user).
*/
int64_t pts;
/**
* PTS copied from the AVPacket that was decoded to produce this frame.
*/
int64_t pkt_pts;
/** |
39a6e02f |
* DTS copied from the AVPacket that triggered returning this frame. (if frame threading isn't used) |
6128d339 |
* This is also the Presentation time of this AVFrame calculated from
* only AVPacket.dts values without pts values. |
7ecc2d40 |
*/
int64_t pkt_dts;
/**
* picture number in bitstream order
*/
int coded_picture_number;
/**
* picture number in display order
*/
int display_picture_number;
/**
* quality (between 1 (good) and FF_LAMBDA_MAX (bad))
*/
int quality;
/**
* for some private data of the user
*/
void *opaque;
|
1aa24df7 |
#if FF_API_ERROR_FRAME |
7ecc2d40 |
/** |
1aa24df7 |
* @deprecated unused |
7ecc2d40 |
*/ |
1aa24df7 |
attribute_deprecated |
7ecc2d40 |
uint64_t error[AV_NUM_DATA_POINTERS]; |
1aa24df7 |
#endif |
7ecc2d40 |
/**
* When decoding, this signals how much the picture must be delayed.
* extra_delay = repeat_pict / (2*fps)
*/
int repeat_pict;
/**
* The content of the picture is interlaced.
*/
int interlaced_frame;
/**
* If the content is interlaced, is top field displayed first.
*/
int top_field_first;
/**
* Tell user application that palette has changed from previous frame.
*/
int palette_has_changed;
/** |
41ed7ab4 |
* reordered opaque 64 bits (generally an integer or a double precision float |
7ecc2d40 |
* PTS but can be anything).
* The user sets AVCodecContext.reordered_opaque to represent the input at
* that time,
* the decoder reorders values as needed and sets AVFrame.reordered_opaque
* to exactly one of the values provided by the user through AVCodecContext.reordered_opaque
* @deprecated in favor of pkt_pts
*/
int64_t reordered_opaque;
/**
* Sample rate of the audio data.
*/
int sample_rate;
/**
* Channel layout of the audio data.
*/
uint64_t channel_layout;
/**
* AVBuffer references backing the data for this frame. If all elements of |
0232ba62 |
* this array are NULL, then this frame is not reference counted. This array
* must be filled contiguously -- if buf[i] is non-NULL then buf[j] must
* also be non-NULL for all j < i. |
7ecc2d40 |
*
* There may be at most one AVBuffer per data plane, so for video this array
* always contains all the references. For planar audio with more than
* AV_NUM_DATA_POINTERS channels, there may be more buffers than can fit in
* this array. Then the extra AVBufferRef pointers are stored in the
* extended_buf array.
*/
AVBufferRef *buf[AV_NUM_DATA_POINTERS];
/**
* 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.
*
* Note that this is different from AVFrame.extended_data, which always
* contains all the pointers. This array only contains the extra pointers,
* which cannot fit into AVFrame.buf.
*
* This array is always allocated using av_malloc() by whoever constructs
* the frame. It is freed in av_frame_unref().
*/
AVBufferRef **extended_buf;
/**
* Number of elements in extended_buf.
*/
int nb_extended_buf; |
c4e88217 |
|
77b2cd7b |
AVFrameSideData **side_data;
int nb_side_data; |
307dc32a |
|
28096e0a |
/** |
045654f4 |
* @defgroup lavu_frame_flags AV_FRAME_FLAGS
* Flags describing additional frame properties.
*
* @{
*/
/** |
28096e0a |
* The frame data may be corrupted, e.g. due to decoding errors.
*/
#define AV_FRAME_FLAG_CORRUPT (1 << 0) |
045654f4 |
/**
* @}
*/ |
28096e0a |
/** |
045654f4 |
* Frame flags, a combination of @ref lavu_frame_flags |
28096e0a |
*/
int flags; |
78265fcf |
|
6e8e9f1e |
/**
* MPEG vs JPEG YUV range.
* It must be accessed using av_frame_get_color_range() and
* av_frame_set_color_range().
* - encoding: Set by user
* - decoding: Set by libavcodec
*/ |
8c02adc6 |
enum AVColorRange color_range;
enum AVColorPrimaries color_primaries;
enum AVColorTransferCharacteristic color_trc;
|
6e8e9f1e |
/**
* YUV colorspace type.
* It must be accessed using av_frame_get_colorspace() and
* av_frame_set_colorspace().
* - encoding: Set by user
* - decoding: Set by libavcodec
*/ |
8c02adc6 |
enum AVColorSpace colorspace;
enum AVChromaLocation chroma_location; |
6e8e9f1e |
|
c4e88217 |
/** |
89923e41 |
* For hwaccel-format frames, this should be a reference to the
* AVHWFramesContext describing the frame.
*/
AVBufferRef *hw_frames_ctx; |
1a708780 |
/** |
c4e88217 |
* frame timestamp estimated using various heuristics, in stream time base |
129785b5 |
* Code outside libavutil should access this field using: |
c4e88217 |
* av_frame_get_best_effort_timestamp(frame)
* - encoding: unused
* - decoding: set by libavcodec, read by user.
*/
int64_t best_effort_timestamp;
/**
* reordered pos from the last AVPacket that has been input into the decoder |
129785b5 |
* Code outside libavutil should access this field using: |
c4e88217 |
* av_frame_get_pkt_pos(frame)
* - encoding: unused
* - decoding: Read by user.
*/
int64_t pkt_pos;
/**
* duration of the corresponding packet, expressed in
* AVStream->time_base units, 0 if unknown. |
129785b5 |
* Code outside libavutil should access this field using: |
c4e88217 |
* av_frame_get_pkt_duration(frame)
* - encoding: unused
* - decoding: Read by user.
*/
int64_t pkt_duration;
/**
* metadata. |
129785b5 |
* Code outside libavutil should access this field using: |
c4e88217 |
* av_frame_get_metadata(frame)
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
AVDictionary *metadata;
/**
* decode error flags of the frame, set to a combination of
* FF_DECODE_ERROR_xxx flags if the decoder produced a frame, but there
* were errors during the decoding. |
129785b5 |
* Code outside libavutil should access this field using: |
c4e88217 |
* av_frame_get_decode_error_flags(frame)
* - encoding: unused
* - decoding: set by libavcodec, read by user.
*/
int decode_error_flags;
#define FF_DECODE_ERROR_INVALID_BITSTREAM 1
#define FF_DECODE_ERROR_MISSING_REFERENCE 2
/**
* number of audio channels, only used for audio. |
129785b5 |
* Code outside libavutil should access this field using: |
c4e88217 |
* av_frame_get_channels(frame)
* - encoding: unused
* - decoding: Read by user.
*/
int channels;
/**
* size of the corresponding packet containing the compressed
* frame. It must be accessed using av_frame_get_pkt_size() and
* av_frame_set_pkt_size().
* It is set to a negative value if unknown.
* - encoding: unused
* - decoding: set by libavcodec, read by user.
*/
int pkt_size; |
caff8881 |
|
a9915268 |
#if FF_API_FRAME_QP |
caff8881 |
/** |
b9fd8133 |
* QP table
* Not to be accessed directly from outside libavutil
*/
attribute_deprecated
int8_t *qscale_table;
/**
* QP store stride
* Not to be accessed directly from outside libavutil
*/
attribute_deprecated
int qstride;
attribute_deprecated
int qscale_type;
/** |
caff8881 |
* Not to be accessed directly from outside libavutil
*/
AVBufferRef *qp_table_buf; |
a9915268 |
#endif |
7ecc2d40 |
} AVFrame;
/** |
c4e88217 |
* Accessors for some AVFrame fields.
* The position of these field in the structure is not part of the ABI, |
129785b5 |
* they should not be accessed directly outside libavutil. |
c4e88217 |
*/
int64_t av_frame_get_best_effort_timestamp(const AVFrame *frame);
void av_frame_set_best_effort_timestamp(AVFrame *frame, int64_t val);
int64_t av_frame_get_pkt_duration (const AVFrame *frame);
void av_frame_set_pkt_duration (AVFrame *frame, int64_t val);
int64_t av_frame_get_pkt_pos (const AVFrame *frame);
void av_frame_set_pkt_pos (AVFrame *frame, int64_t val);
int64_t av_frame_get_channel_layout (const AVFrame *frame);
void av_frame_set_channel_layout (AVFrame *frame, int64_t val);
int av_frame_get_channels (const AVFrame *frame);
void av_frame_set_channels (AVFrame *frame, int val);
int av_frame_get_sample_rate (const AVFrame *frame);
void av_frame_set_sample_rate (AVFrame *frame, int val);
AVDictionary *av_frame_get_metadata (const AVFrame *frame);
void av_frame_set_metadata (AVFrame *frame, AVDictionary *val);
int av_frame_get_decode_error_flags (const AVFrame *frame);
void av_frame_set_decode_error_flags (AVFrame *frame, int val);
int av_frame_get_pkt_size(const AVFrame *frame);
void av_frame_set_pkt_size(AVFrame *frame, int val);
AVDictionary **avpriv_frame_get_metadatap(AVFrame *frame); |
a9915268 |
#if FF_API_FRAME_QP |
caff8881 |
int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type);
int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int type); |
a9915268 |
#endif |
a80e6229 |
enum AVColorSpace av_frame_get_colorspace(const AVFrame *frame);
void av_frame_set_colorspace(AVFrame *frame, enum AVColorSpace val);
enum AVColorRange av_frame_get_color_range(const AVFrame *frame);
void av_frame_set_color_range(AVFrame *frame, enum AVColorRange val); |
c4e88217 |
/** |
9c8aeacf |
* Get the name of a colorspace.
* @return a static string identifying the colorspace; can be NULL.
*/
const char *av_get_colorspace_name(enum AVColorSpace val);
/** |
7ecc2d40 |
* Allocate an AVFrame and set its fields to default values. The resulting
* struct must be freed using av_frame_free().
*
* @return An AVFrame filled with default values or NULL on failure.
*
* @note this only allocates the AVFrame itself, not the data buffers. Those
* must be allocated through other means, e.g. with av_frame_get_buffer() or
* manually.
*/
AVFrame *av_frame_alloc(void);
/**
* Free the frame and any dynamically allocated objects in it,
* e.g. extended_data. If the frame is reference counted, it will be
* unreferenced first.
*
* @param frame frame to be freed. The pointer will be set to NULL.
*/
void av_frame_free(AVFrame **frame);
/** |
a18ef7a7 |
* Set up a new reference to the data described by the source frame. |
7ecc2d40 |
*
* Copy frame properties from src to dst and create a new reference for each
* AVBufferRef from src.
*
* If src is not reference counted, new buffers are allocated and the data is
* copied.
* |
f099cb2f |
* @warning: dst MUST have been either unreferenced with av_frame_unref(dst),
* or newly allocated with av_frame_alloc() before calling this
* function, or undefined behavior will occur.
* |
7ecc2d40 |
* @return 0 on success, a negative AVERROR on error
*/ |
529a9893 |
int av_frame_ref(AVFrame *dst, const AVFrame *src); |
7ecc2d40 |
/**
* Create a new frame that references the same data as src.
*
* This is a shortcut for av_frame_alloc()+av_frame_ref().
*
* @return newly created AVFrame on success, NULL on error.
*/ |
529a9893 |
AVFrame *av_frame_clone(const AVFrame *src); |
7ecc2d40 |
/**
* Unreference all the buffers referenced by frame and reset the frame fields.
*/
void av_frame_unref(AVFrame *frame);
/** |
8e985b72 |
* Move everything contained in src to dst and reset src. |
f099cb2f |
*
* @warning: dst is not unreferenced, but directly overwritten without reading
* or deallocating its contents. Call av_frame_unref(dst) manually
* before calling this function to ensure that no memory is leaked. |
7ecc2d40 |
*/
void av_frame_move_ref(AVFrame *dst, AVFrame *src);
/**
* Allocate new buffer(s) for audio or video data.
*
* The following fields must be set on frame before calling this function:
* - format (pixel format for video, sample format for audio)
* - width and height for video
* - nb_samples and channel_layout for audio
*
* This function will fill AVFrame.data and AVFrame.buf arrays and, if
* necessary, allocate and fill AVFrame.extended_data and AVFrame.extended_buf.
* For planar formats, one buffer will be allocated for each plane.
* |
7a6cf277 |
* @warning: if frame already has been allocated, calling this function will
* leak memory. In addition, undefined behavior can occur in certain
* cases. |
f099cb2f |
* |
7ecc2d40 |
* @param frame frame in which to store the new buffers.
* @param align required buffer size alignment
*
* @return 0 on success, a negative AVERROR on error.
*/
int av_frame_get_buffer(AVFrame *frame, int align);
/**
* Check if the frame data is writable.
*
* @return A positive value if the frame data is writable (which is true if and
* only if each of the underlying buffers has only one reference, namely the one
* stored in this frame). Return 0 otherwise.
*
* If 1 is returned the answer is valid until av_buffer_ref() is called on any
* of the underlying AVBufferRefs (e.g. through av_frame_ref() or directly).
*
* @see av_frame_make_writable(), av_buffer_is_writable()
*/
int av_frame_is_writable(AVFrame *frame);
/**
* Ensure that the frame data is writable, avoiding data copy if possible.
*
* Do nothing if the frame is writable, allocate new buffers and copy the data
* if it is not.
*
* @return 0 on success, a negative AVERROR on error.
*
* @see av_frame_is_writable(), av_buffer_is_writable(),
* av_buffer_make_writable()
*/
int av_frame_make_writable(AVFrame *frame);
/** |
1155fd02 |
* Copy the frame data from src to dst.
*
* This function does not allocate anything, dst must be already initialized and
* allocated with the same parameters as src.
*
* This function only copies the frame data (i.e. the contents of the data /
* extended data arrays), not any other properties.
*
* @return >= 0 on success, a negative AVERROR on error.
*/
int av_frame_copy(AVFrame *dst, const AVFrame *src);
/** |
7ecc2d40 |
* Copy only "metadata" fields from src to dst.
*
* Metadata for the purpose of this function are those fields that do not affect
* the data layout in the buffers. E.g. pts, sample rate (for audio) or sample
* aspect ratio (for video), but not width/height or channel layout. |
77b2cd7b |
* Side data is also copied. |
7ecc2d40 |
*/
int av_frame_copy_props(AVFrame *dst, const AVFrame *src);
/**
* Get the buffer reference a given data plane is stored in.
*
* @param plane index of the data plane of interest in frame->extended_data.
*
* @return the buffer reference that contains the plane or NULL if the input
* frame is not valid.
*/
AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane);
|
77b2cd7b |
/**
* Add a new side data to a frame.
*
* @param frame a frame to which the side data should be added
* @param type type of the added side data
* @param size size of the side data
*
* @return newly added side data on success, NULL on error
*/
AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
enum AVFrameSideDataType type,
int size);
/**
* @return a pointer to the side data of a given type on success, NULL if there
* is no side data with such type in this frame.
*/ |
3c8bff07 |
AVFrameSideData *av_frame_get_side_data(const AVFrame *frame, |
77b2cd7b |
enum AVFrameSideDataType type);
|
ff23c4e4 |
/** |
d161ae0a |
* If side data of the supplied type exists in the frame, free it and remove it
* from the frame.
*/
void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type);
/** |
ba3e3311 |
* @return a string identifying the side data type
*/
const char *av_frame_side_data_name(enum AVFrameSideDataType type);
/** |
ff23c4e4 |
* @}
*/
|
7ecc2d40 |
#endif /* AVUTIL_FRAME_H */ |