2012-10-17 12:51:01 +03:00
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/*
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*
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2013-03-08 22:18:45 +03:00
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* This file is part of FFmpeg.
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2012-10-17 12:51:01 +03:00
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*
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2013-03-08 22:18:45 +03:00
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* FFmpeg is free software; you can redistribute it and/or
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2012-10-17 12:51:01 +03:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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2013-03-08 22:18:45 +03:00
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* FFmpeg is distributed in the hope that it will be useful,
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2012-10-17 12:51:01 +03:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2013-03-08 22:18:45 +03:00
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* License along with FFmpeg; if not, write to the Free Software
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2012-10-17 12:51:01 +03:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_FRAME_H
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#define AVUTIL_FRAME_H
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#include <stdint.h>
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#include "libavcodec/version.h"
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#include "avutil.h"
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#include "buffer.h"
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2012-12-26 00:11:36 +03:00
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#include "dict.h"
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2012-10-17 12:51:01 +03:00
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#include "rational.h"
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#include "samplefmt.h"
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2013-07-14 20:13:46 +03:00
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enum AVColorSpace{
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2013-11-04 23:25:36 +03:00
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AVCOL_SPC_RGB = 0,
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AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
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AVCOL_SPC_UNSPECIFIED = 2,
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AVCOL_SPC_FCC = 4,
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AVCOL_SPC_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
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AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
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AVCOL_SPC_SMPTE240M = 7,
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AVCOL_SPC_YCOCG = 8, ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
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AVCOL_SPC_BT2020_NCL = 9, ///< ITU-R BT2020 non-constant luminance system
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AVCOL_SPC_BT2020_CL = 10, ///< ITU-R BT2020 constant luminance system
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AVCOL_SPC_NB , ///< Not part of ABI
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2013-07-14 20:13:46 +03:00
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};
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#define AVCOL_SPC_YCGCO AVCOL_SPC_YCOCG
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enum AVColorRange{
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AVCOL_RANGE_UNSPECIFIED = 0,
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AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
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AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges
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AVCOL_RANGE_NB , ///< Not part of ABI
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};
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2013-11-04 23:25:36 +03:00
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2012-12-26 00:11:36 +03:00
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enum AVFrameSideDataType {
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/**
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* The data is the AVPanScan struct defined in libavcodec.
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*/
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AV_FRAME_DATA_PANSCAN,
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2013-11-26 02:57:28 +03:00
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/**
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* ATSC A53 Part 4 Closed Captions.
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* A53 CC bitstream is stored as uint8_t in AVFrameSideData.data.
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* The number of bytes of CC data is AVFrameSideData.size.
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*/
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AV_FRAME_DATA_A53_CC,
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2013-11-28 16:47:13 +03:00
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/**
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* Stereoscopic 3d metadata.
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* The data is the AVStereo3D struct defined in libavutil/stereo3d.h.
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*/
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AV_FRAME_DATA_STEREO3D,
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2012-12-26 00:11:36 +03:00
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};
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typedef struct AVFrameSideData {
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enum AVFrameSideDataType type;
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uint8_t *data;
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int size;
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AVDictionary *metadata;
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} AVFrameSideData;
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2012-10-17 12:51:01 +03:00
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/**
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* This structure describes decoded (raw) audio or video data.
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*
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2013-03-10 04:07:34 +03:00
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* AVFrame must be allocated using av_frame_alloc(). Note that this only
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2012-10-17 12:51:01 +03:00
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* allocates the AVFrame itself, the buffers for the data must be managed
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* through other means (see below).
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* AVFrame must be freed with av_frame_free().
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*
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* AVFrame is typically allocated once and then reused multiple times to hold
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* different data (e.g. a single AVFrame to hold frames received from a
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* decoder). In such a case, av_frame_unref() will free any references held by
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* the frame and reset it to its original clean state before it
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* is reused again.
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*
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* The data described by an AVFrame is usually reference counted through the
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* AVBuffer API. The underlying buffer references are stored in AVFrame.buf /
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* AVFrame.extended_buf. An AVFrame is considered to be reference counted if at
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* least one reference is set, i.e. if AVFrame.buf[0] != NULL. In such a case,
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* every single data plane must be contained in one of the buffers in
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* AVFrame.buf or AVFrame.extended_buf.
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* There may be a single buffer for all the data, or one separate buffer for
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* each plane, or anything in between.
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*
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* sizeof(AVFrame) is not a part of the public ABI, so new fields may be added
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* to the end with a minor bump.
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2013-03-08 22:18:45 +03:00
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* Similarly fields that are marked as to be only accessed by
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* av_opt_ptr() can be reordered. This allows 2 forks to add fields
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* without breaking compatibility with each other.
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2012-10-17 12:51:01 +03:00
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*/
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typedef struct AVFrame {
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#define AV_NUM_DATA_POINTERS 8
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/**
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* pointer to the picture/channel planes.
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* This might be different from the first allocated byte
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2013-03-17 05:20:16 +03:00
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*
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* Some decoders access areas outside 0,0 - width,height, please
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* see avcodec_align_dimensions2(). Some filters and swscale can read
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* up to 16 bytes beyond the planes, if these filters are to be used,
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* then 16 extra bytes must be allocated.
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2012-10-17 12:51:01 +03:00
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*/
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uint8_t *data[AV_NUM_DATA_POINTERS];
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/**
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* For video, size in bytes of each picture line.
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* For audio, size in bytes of each plane.
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*
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* For audio, only linesize[0] may be set. For planar audio, each channel
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* plane must be the same size.
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2013-03-17 05:20:16 +03:00
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*
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* For video the linesizes should be multiplies of the CPUs alignment
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2013-03-18 06:47:27 +03:00
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* preference, this is 16 or 32 for modern desktop CPUs.
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2013-03-17 05:20:16 +03:00
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* Some code requires such alignment other code can be slower without
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* correct alignment, for yet other it makes no difference.
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2013-09-28 11:47:43 +03:00
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*
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2013-09-27 17:49:05 +03:00
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* @note The linesize may be larger than the size of usable data -- there
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* may be extra padding present for performance reasons.
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2012-10-17 12:51:01 +03:00
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*/
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int linesize[AV_NUM_DATA_POINTERS];
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/**
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* pointers to the data planes/channels.
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*
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* For video, this should simply point to data[].
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*
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* For planar audio, each channel has a separate data pointer, and
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* linesize[0] contains the size of each channel buffer.
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* For packed audio, there is just one data pointer, and linesize[0]
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* contains the total size of the buffer for all channels.
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*
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* Note: Both data and extended_data should always be set in a valid frame,
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* but for planar audio with more channels that can fit in data,
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* extended_data must be used in order to access all channels.
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*/
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uint8_t **extended_data;
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/**
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* width and height of the video frame
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*/
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int width, height;
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/**
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* number of audio samples (per channel) described by this frame
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*/
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int nb_samples;
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/**
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* format of the frame, -1 if unknown or unset
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* Values correspond to enum AVPixelFormat for video frames,
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* enum AVSampleFormat for audio)
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*/
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int format;
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/**
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* 1 -> keyframe, 0-> not
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*/
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int key_frame;
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/**
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* Picture type of the frame.
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*/
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enum AVPictureType pict_type;
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2013-02-15 19:30:30 +03:00
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#if FF_API_AVFRAME_LAVC
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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uint8_t *base[AV_NUM_DATA_POINTERS];
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2013-02-15 19:30:30 +03:00
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#endif
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2012-10-17 12:51:01 +03:00
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/**
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* Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
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*/
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AVRational sample_aspect_ratio;
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/**
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* Presentation timestamp in time_base units (time when frame should be shown to user).
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*/
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int64_t pts;
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/**
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* PTS copied from the AVPacket that was decoded to produce this frame.
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*/
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int64_t pkt_pts;
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/**
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2013-03-19 02:47:00 +03:00
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* DTS copied from the AVPacket that triggered returning this frame. (if frame threading isnt used)
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* This is also the Presentation time of this AVFrame calculated from
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* only AVPacket.dts values without pts values.
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2012-10-17 12:51:01 +03:00
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*/
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int64_t pkt_dts;
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/**
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* picture number in bitstream order
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*/
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int coded_picture_number;
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/**
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* picture number in display order
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*/
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int display_picture_number;
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/**
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* quality (between 1 (good) and FF_LAMBDA_MAX (bad))
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*/
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int quality;
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2013-02-15 19:30:30 +03:00
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#if FF_API_AVFRAME_LAVC
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int reference;
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/**
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* QP table
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int8_t *qscale_table;
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/**
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* QP store stride
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int qstride;
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int qscale_type;
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/**
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* mbskip_table[mb]>=1 if MB didn't change
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* stride= mb_width = (width+15)>>4
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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uint8_t *mbskip_table;
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/**
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* motion vector table
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* @code
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* example:
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* int mv_sample_log2= 4 - motion_subsample_log2;
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* int mb_width= (width+15)>>4;
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* int mv_stride= (mb_width << mv_sample_log2) + 1;
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* motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
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* @endcode
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int16_t (*motion_val[2])[2];
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/**
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* macroblock type table
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* mb_type_base + mb_width + 2
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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uint32_t *mb_type;
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/**
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* DCT coefficients
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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short *dct_coeff;
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/**
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* motion reference frame index
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* the order in which these are stored can depend on the codec.
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int8_t *ref_index[2];
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2013-02-15 19:30:30 +03:00
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#endif
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2012-10-17 12:51:01 +03:00
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/**
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* for some private data of the user
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*/
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void *opaque;
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/**
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* error
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*/
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uint64_t error[AV_NUM_DATA_POINTERS];
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2013-02-15 19:30:30 +03:00
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#if FF_API_AVFRAME_LAVC
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int type;
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2013-02-15 19:30:30 +03:00
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#endif
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2012-10-17 12:51:01 +03:00
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/**
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* When decoding, this signals how much the picture must be delayed.
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* extra_delay = repeat_pict / (2*fps)
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*/
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int repeat_pict;
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/**
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* The content of the picture is interlaced.
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*/
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int interlaced_frame;
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/**
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* If the content is interlaced, is top field displayed first.
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*/
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int top_field_first;
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/**
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* Tell user application that palette has changed from previous frame.
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*/
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int palette_has_changed;
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2013-02-15 19:30:30 +03:00
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#if FF_API_AVFRAME_LAVC
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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int buffer_hints;
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/**
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* Pan scan.
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*/
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2013-02-15 19:30:30 +03:00
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attribute_deprecated
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2012-10-17 12:51:01 +03:00
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struct AVPanScan *pan_scan;
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2013-02-15 19:30:30 +03:00
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#endif
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2012-10-17 12:51:01 +03:00
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/**
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* reordered opaque 64bit (generally an integer or a double precision float
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* PTS but can be anything).
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* The user sets AVCodecContext.reordered_opaque to represent the input at
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* that time,
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|
|
* 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;
|
|
|
|
|
|
|
|
#if FF_API_AVFRAME_LAVC
|
|
|
|
/**
|
|
|
|
* @deprecated this field is unused
|
|
|
|
*/
|
|
|
|
attribute_deprecated void *hwaccel_picture_private;
|
|
|
|
|
2013-02-15 19:30:30 +03:00
|
|
|
attribute_deprecated
|
2012-10-17 12:51:01 +03:00
|
|
|
struct AVCodecContext *owner;
|
2013-02-15 19:30:30 +03:00
|
|
|
attribute_deprecated
|
2012-10-17 12:51:01 +03:00
|
|
|
void *thread_opaque;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* log2 of the size of the block which a single vector in motion_val represents:
|
|
|
|
* (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
|
|
|
|
*/
|
2013-02-15 19:30:30 +03:00
|
|
|
attribute_deprecated
|
2012-10-17 12:51:01 +03:00
|
|
|
uint8_t motion_subsample_log2;
|
2013-02-15 19:30:30 +03:00
|
|
|
#endif
|
2012-10-17 12:51:01 +03:00
|
|
|
|
|
|
|
/**
|
|
|
|
* 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
|
|
|
|
* this array are NULL, then this frame is not reference counted.
|
|
|
|
*
|
|
|
|
* 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;
|
2013-03-08 22:18:45 +03:00
|
|
|
|
2012-12-26 00:11:36 +03:00
|
|
|
AVFrameSideData **side_data;
|
|
|
|
int nb_side_data;
|
2013-03-08 22:41:41 +03:00
|
|
|
|
2013-10-11 19:51:50 +03:00
|
|
|
/**
|
|
|
|
* The frame data may be corrupted, e.g. due to decoding errors.
|
|
|
|
*/
|
|
|
|
#define AV_FRAME_FLAG_CORRUPT (1 << 0)
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Frame flags, a combination of AV_FRAME_FLAG_*
|
|
|
|
*/
|
|
|
|
int flags;
|
2013-11-01 13:33:36 +03:00
|
|
|
|
2013-03-08 22:18:45 +03:00
|
|
|
/**
|
|
|
|
* frame timestamp estimated using various heuristics, in stream time base
|
|
|
|
* Code outside libavcodec should access this field using:
|
|
|
|
* 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
|
|
|
|
* Code outside libavcodec should access this field using:
|
|
|
|
* 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.
|
|
|
|
* Code outside libavcodec should access this field using:
|
|
|
|
* av_frame_get_pkt_duration(frame)
|
|
|
|
* - encoding: unused
|
|
|
|
* - decoding: Read by user.
|
|
|
|
*/
|
|
|
|
int64_t pkt_duration;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* metadata.
|
|
|
|
* Code outside libavcodec should access this field using:
|
|
|
|
* 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.
|
|
|
|
* Code outside libavcodec should access this field using:
|
|
|
|
* 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.
|
|
|
|
* Code outside libavcodec should access this field using:
|
|
|
|
* 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;
|
2013-03-14 04:12:14 +03:00
|
|
|
|
2013-07-14 20:13:46 +03:00
|
|
|
/**
|
|
|
|
* 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
|
|
|
|
*/
|
|
|
|
enum AVColorSpace colorspace;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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
|
|
|
|
*/
|
|
|
|
enum AVColorRange color_range;
|
|
|
|
|
|
|
|
|
2013-03-14 04:12:14 +03:00
|
|
|
/**
|
|
|
|
* Not to be accessed directly from outside libavutil
|
|
|
|
*/
|
|
|
|
AVBufferRef *qp_table_buf;
|
2012-10-17 12:51:01 +03:00
|
|
|
} AVFrame;
|
|
|
|
|
2013-03-08 22:18:45 +03:00
|
|
|
/**
|
|
|
|
* Accessors for some AVFrame fields.
|
|
|
|
* The position of these field in the structure is not part of the ABI,
|
|
|
|
* they should not be accessed directly outside libavcodec.
|
|
|
|
*/
|
|
|
|
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);
|
2013-03-14 04:12:14 +03:00
|
|
|
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);
|
2013-07-14 20:13:46 +03:00
|
|
|
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);
|
2013-03-08 22:18:45 +03:00
|
|
|
|
2013-08-31 18:10:10 +03:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
2012-10-17 12:51:01 +03:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
|
|
|
/**
|
2013-08-10 20:35:31 +03:00
|
|
|
* Setup a new reference to the data described by a given frame.
|
2012-10-17 12:51:01 +03:00
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*
|
|
|
|
* @return 0 on success, a negative AVERROR on error
|
|
|
|
*/
|
2013-10-26 17:43:07 +03:00
|
|
|
int av_frame_ref(AVFrame *dst, const AVFrame *src);
|
2012-10-17 12:51:01 +03:00
|
|
|
|
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
2013-10-26 17:43:07 +03:00
|
|
|
AVFrame *av_frame_clone(const AVFrame *src);
|
2012-10-17 12:51:01 +03:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Unreference all the buffers referenced by frame and reset the frame fields.
|
|
|
|
*/
|
|
|
|
void av_frame_unref(AVFrame *frame);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Move everythnig contained in src to dst and reset src.
|
|
|
|
*/
|
|
|
|
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.
|
|
|
|
*
|
|
|
|
* @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);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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.
|
2012-12-26 00:11:36 +03:00
|
|
|
* Side data is also copied.
|
2012-10-17 12:51:01 +03:00
|
|
|
*/
|
|
|
|
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);
|
|
|
|
|
2012-12-26 00:11:36 +03:00
|
|
|
/**
|
|
|
|
* 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.
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*/
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2013-07-30 18:39:07 +03:00
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AVFrameSideData *av_frame_get_side_data(const AVFrame *frame,
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2012-12-26 00:11:36 +03:00
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enum AVFrameSideDataType type);
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2012-10-17 12:51:01 +03:00
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#endif /* AVUTIL_FRAME_H */
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