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-rw-r--r--src/lib/ffmpeg-2.1/libavutil/frame.pas733
1 files changed, 733 insertions, 0 deletions
diff --git a/src/lib/ffmpeg-2.1/libavutil/frame.pas b/src/lib/ffmpeg-2.1/libavutil/frame.pas
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+(*
+ * AVOptions
+ * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * 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
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *
+ * Conversion of libavutil/frame.h
+ * avutil version 52.48.100
+ *
+*)
+
+const
+ AV_NUM_DATA_POINTERS = 8;
+
+ FF_DECODE_ERROR_INVALID_BITSTREAM = 1;
+ FF_DECODE_ERROR_MISSING_REFERENCE = 2;
+
+
+type
+ TAVColorSpace = (
+ AVCOL_SPC_RGB = 0,
+ AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
+ AVCOL_SPC_UNSPECIFIED = 2,
+ AVCOL_SPC_FCC = 4,
+ 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
+ AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
+ AVCOL_SPC_SMPTE240M_ = 7,
+ AVCOL_SPC_YCGCO = 8,
+ AVCOL_SPC_NB ///< Not part of ABI
+ );
+
+ TAVColorRange = (
+ AVCOL_RANGE_UNSPECIFIED = 0,
+ AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
+ AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges
+ AVCOL_RANGE_NB ///< Not part of ABI
+ );
+
+ TAVFrameSideDataType = (
+ (**
+ * The data is the AVPanScan struct defined in libavcodec.
+ *)
+ AV_FRAME_DATA_PANSCAN
+ );
+
+ PAVFrameSideData = ^TAVFrameSideData;
+ TAVFrameSideData = record
+ type_: TAVFrameSideDataType;
+ data: PByte;
+ size: cint;
+ metadata: TAVDictionary;
+ end; {TAVFrameSideData}
+
+ (**
+ * This structure describes decoded (raw) audio or video data.
+ *
+ * AVFrame must be allocated using av_frame_alloc(). Note that this only
+ * 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.
+ * 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.
+ *)
+ PPAVFrame = ^PAVFrame;
+ PAVFrame = ^TAVFrame;
+ TAVFrame = record
+ (**
+ * pointer to the picture/channel planes.
+ * This might be different from the first allocated byte
+ *
+ * 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.
+ *)
+ data: array [0..AV_NUM_DATA_POINTERS - 1] of pbyte;
+
+ (**
+ * 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.
+ *
+ * For video the linesizes should be multiplies of the CPUs alignment
+ * preference, this is 16 or 32 for modern desktop CPUs.
+ * Some code requires such alignment other code can be slower without
+ * correct alignment, for yet other it makes no difference.
+ *
+ * @note The linesize may be larger than the size of usable data -- there
+ * may be extra padding present for performance reasons.
+ *)
+ linesize: array [0..AV_NUM_DATA_POINTERS - 1] of cint;
+
+ (**
+ * 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 will always be set by get_buffer(),
+ * but for planar audio with more channels that can fit in data,
+ * extended_data must be used by the decoder in order to access all
+ * channels.
+ *
+ * encoding: set by user
+ * decoding: set by AVCodecContext.get_buffer()
+ *)
+ extended_data: ^pbyte;
+
+ (**
+ * width and height of the video frame
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ width, height: cint;
+ (**
+ * number of audio samples (per channel) described by this frame
+ * - encoding: Set by user
+ * - decoding: Set by libavcodec
+ *)
+ nb_samples: cint;
+
+ (**
+ * format of the frame, -1 if unknown or unset
+ * Values correspond to enum AVPixelFormat for video frames,
+ * enum AVSampleFormat for audio)
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ format: cint;
+
+ (**
+ * 1 -> keyframe, 0-> not
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ key_frame: cint;
+
+ (**
+ * Picture type of the frame
+ * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
+ * - decoding: Set by libavcodec.
+ *)
+ pict_type: TAVPictureType;
+
+{$IFDEF FF_API_AVFRAME_LAVC}
+ (**
+ * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.
+ * This isn't used by libavcodec unless the default get/release_buffer() is used.
+ * - encoding:
+ * - decoding:
+ *)
+ base: array [0..AV_NUM_DATA_POINTERS - 1] of pbyte; {deprecated}
+{$ENDIF}
+
+ (**
+ * sample aspect ratio for the video frame, 0/1 if unknown/unspecified
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ sample_aspect_ratio: TAVRational;
+
+ (**
+ * presentation timestamp in time_base units (time when frame should be shown to user)
+ * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.
+ * - encoding: MUST be set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ pts: cint64;
+
+ (**
+ * pts copied from the AVPacket that was decoded to produce this frame
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ pkt_pts: cint64;
+
+ (**
+ * dts copied from the AVPacket that triggered returning this frame
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ pkt_dts: cint64;
+
+ (**
+ * picture number in bitstream order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ coded_picture_number: cint;
+
+ (**
+ * picture number in display order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ display_picture_number: cint;
+
+ (**
+ * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
+ * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
+ * - decoding: Set by libavcodec.
+ *)
+ quality: cint;
+
+{$IFDEF FF_API_AVFRAME_LAVC}
+ reference: cint; {deprecated}
+
+ (**
+ * QP table
+ *)
+ qscale_table: pbyte; {deprecated}
+
+ (**
+ * QP store stride
+ *)
+ qstride: cint; {deprecated}
+ qscale_type: cint; {deprecated}
+
+ (**
+ * mbskip_table[mb]>=1 if MB didn't change
+ * stride= mb_width = (width+15)>>4
+ *)
+ mbskip_table: pbyte; {deprecated}
+
+ (**
+ * motion vector table
+ * @code
+ * example:
+ * int mv_sample_log2= 4 - motion_subsample_log2;
+ * int mb_width= (width+15)>>4;
+ * int mv_stride= (mb_width << mv_sample_log2) + 1;
+ * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
+ * @endcode
+ *)
+ motion_val: array [0..1] of pointer; {deprecated}
+
+ (**
+ * macroblock type table
+ * mb_type_base + mb_width + 2
+ *)
+ mb_type: PCuint; {deprecated}
+
+ (**
+ * DCT coefficients
+ *)
+ dct_coeff: PsmallInt; {deprecated}
+
+ (**
+ * motion reference frame index
+ * the order in which these are stored can depend on the codec.
+ *)
+ ref_index: array [0..1] of pbyte; {deprecated}
+{$ENDIF}
+
+ (**
+ * for some private data of the user
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ opaque: pointer;
+
+ (**
+ * error
+ * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.
+ * - decoding: unused
+ *)
+ error: array [0..AV_NUM_DATA_POINTERS - 1] of cuint64;
+
+{$IFDEF FF_API_AVFRAME_LAVC}
+ type_: cint; {deprecated}
+{$ENDIF}
+
+ (**
+ * When decoding, this signals how much the picture must be delayed.
+ * extra_delay = repeat_pict / (2*fps)
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ repeat_pict: cint;
+
+ (**
+ * The content of the picture is interlaced.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec. (default 0)
+ *)
+ interlaced_frame: cint;
+
+ (**
+ * If the content is interlaced, is top field displayed first.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ top_field_first: cint;
+
+ (**
+ * Tell user application that palette has changed from previous frame.
+ * - encoding: ??? (no palette-enabled encoder yet)
+ * - decoding: Set by libavcodec. (default 0).
+ *)
+ palette_has_changed: cint;
+
+{$IFDEF FF_API_AVFRAME_LAVC}
+ buffer_hints: cint; {deprecated}
+ (**
+ * Pan scan.
+ *)
+ pan_scan: PAVPanScan; {deprecated}
+{$ENDIF}
+
+ (**
+ * reordered opaque 64bit (generally an integer or a double precision float
+ * 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
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ reordered_opaque: cint64;
+
+{$IFDEF FF_API_AVFRAME_LAVC}
+ (**
+ * @deprecated this field is unused
+ *)
+ hwaccel_picture_private: pointer; {deprecated}
+ owner: PAVCodecContext; {deprecated}
+ thread_opaque: pointer; {deprecated}
+
+ (**
+ * log2 of the size of the block which a single vector in motion_val represents:
+ * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
+ *)
+ motion_subsample_log2: cuint8; {deprecated}
+{$ENDIF}
+
+ (**
+ * Sample rate of the audio data.
+ *
+ * - encoding: unused
+ * - decoding: read by user
+ *)
+ sample_rate: cint;
+
+ (**
+ * Channel layout of the audio data.
+ *
+ * - encoding: unused
+ * - decoding: read by user.
+ *)
+ channel_layout: cuint64;
+
+ (**
+ * 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.
+ *)
+ buf: array [0..AV_NUM_DATA_POINTERS - 1] of PAVBufferRef;
+
+ (**
+ * 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().
+ *)
+ extended_buf: PPAVBufferRef;
+
+ (**
+ * Number of elements in extended_buf.
+ *)
+ nb_extended_buf: cint;
+
+ side_data: ^PAVFrameSideData;
+ nb_side_data: cint;
+
+ (**
+ * 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.
+ *)
+ best_effort_timestamp: cint64;
+
+ (**
+ * 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.
+ *)
+ pkt_pos: cint64;
+
+ (**
+ * 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.
+ *)
+ pkt_duration: cint64;
+
+ (**
+ * metadata.
+ * Code outside libavcodec should access this field using:
+ * av_frame_get_metadata(frame)
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ metadata: PAVDictionary;
+
+ (**
+ * 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.
+ *)
+ decode_error_flags: cint;
+
+ (**
+ * 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.
+ *)
+ channels: cint;
+
+ (**
+ * 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.
+ *)
+ pkt_size: cint;
+
+ (**
+ * 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
+ *)
+ colorspace: TAVColorSpace;
+
+ (**
+ * 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
+ *)
+ color_range: TAVColorRange;
+
+ (**
+ * Not to be accessed directly from outside libavutil
+ *)
+ qp_table_buf: PAVBufferRef;
+ end; {TAVFrame}
+
+ (**
+ * 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.
+ *)
+ function av_frame_get_best_effort_timestamp(frame: {const} PAVFrame): cint64;
+ cdecl; external av__codec; overload;
+ procedure av_frame_set_best_effort_timestamp(frame: PAVFrame; val: cint64);
+ cdecl; external av__codec; overload;
+ function av_frame_get_pkt_duration (frame: {const} PAVFrame): cint64;
+ cdecl; external av__codec; overload;
+ procedure av_frame_get_pkt_duration (frame: PAVFrame; val: cint64);
+ cdecl; external av__codec; overload;
+ function av_frame_get_pkt_pos (frame: {const} PAVFrame): cint64;
+ cdecl; external av__codec; overload;
+ procedure av_frame_get_pkt_pos (frame: PAVFrame; val: cint64);
+ cdecl; external av__codec; overload;
+ function av_frame_get_channel_layout (frame: {const} PAVFrame): cint64;
+ cdecl; external av__codec; overload;
+ procedure av_frame_get_channel_layout (frame: PAVFrame; val: cint64);
+ cdecl; external av__codec; overload;
+ function av_frame_get_channels (frame: {const} PAVFrame): cint;
+ cdecl; external av__codec;
+ procedure av_frame_set_channels (frame: PAVFrame; val: cint);
+ cdecl; external av__codec;
+ function av_frame_get_sample_rate (frame: {const} PAVFrame): cint;
+ cdecl; external av__codec;
+ procedure av_frame_set_sample_rate (frame: PAVFrame; val: cint);
+ cdecl; external av__codec;
+ function av_frame_get_metadata (frame: {const} PAVFrame): PAVDictionary;
+ cdecl; external av__codec;
+ procedure av_frame_set_metadata (frame: PAVFrame; val: PAVDictionary);
+ cdecl; external av__codec;
+ function av_frame_get_decode_error_flags (frame: {const} PAVFrame): cint;
+ cdecl; external av__codec;
+ procedure av_frame_set_decode_error_flags (frame: PAVFrame; val: cint);
+ cdecl; external av__codec;
+ function av_frame_get_pkt_size (frame: {const} PAVFrame): cint;
+ cdecl; external av__codec;
+ procedure av_frame_set_pkt_size (frame: PAVFrame; val: cint);
+ cdecl; external av__codec;
+ function avpriv_frame_get_metadatap(frame: PAVFrame): PPAVDictionary;
+ cdecl; external av__codec;
+ function av_frame_get_qp_table(f: PAVFrame; stride: pcint; type_: pcint): PByte;
+ cdecl; external av__codec;
+ function av_frame_set_qp_table(f: PAVFrame; buf: PAVBufferRef; stride: cint; type_: cint): cint;
+ cdecl; external av__codec;
+ function av_frame_get_colorspace(frame: {const} PAVFrame): TAVColorSpace;
+ cdecl; external av__codec;
+ procedure av_frame_set_colorspace(frame: PAVFrame; val: TAVColorSpace);
+ cdecl; external av__codec;
+ procedure av_frame_set_color_range(frame: PAVFrame; val: TAVColorSpace);
+ cdecl; external av__codec;
+
+ (**
+ * Get the name of a colorspace.
+ * @return a static string identifying the colorspace; can be NULL.
+ *)
+ function av_get_colorspace_name(val: TAVColorSpace): PAnsiChar;
+ cdecl; external av__codec;
+
+ (**
+ * 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.
+ *)
+ function av_frame_alloc(): PAVFrame;
+ cdecl; external av__codec;
+
+ (**
+ * 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.
+ *)
+ procedure av_frame_free(frame: PPAVFrame);
+ cdecl; external av__codec;
+
+ (**
+ * Setup a new reference to the data described by a given frame.
+ *
+ * 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
+ *)
+ function av_frame_ref(dst: PAVFrame; src: PAVFrame): cint;
+ cdecl; external av__codec;
+
+ (**
+ * 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.
+ *)
+ function av_frame_clone(src: PAVFrame): PAVFrame;
+ cdecl; external av__codec;
+
+ (**
+ * Unreference all the buffers referenced by frame and reset the frame fields.
+ *)
+ procedure av_frame_unref(frame: PAVFrame);
+ cdecl; external av__codec;
+
+ (**
+ * Move everythnig contained in src to dst and reset src.
+ *)
+ procedure av_frame_move_ref(dst, src: PAVFrame);
+ cdecl; external av__codec;
+
+ (**
+ * 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.
+ *)
+ function av_frame_get_buffer(frame: PAVFrame; align: cint): cint;
+ cdecl; external av__codec;
+
+ (**
+ * 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()
+ *)
+ function av_frame_is_writable(frame: PAVFrame): cint;
+ cdecl; external av__codec;
+
+ (**
+ * 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()
+ *)
+ function av_frame_make_writable(frame: PAVFrame): cint;
+ cdecl; external av__codec;
+
+ (**
+ * 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.
+ * Side data is also copied.
+ *)
+ function av_frame_copy_props(dst: PAVFrame; src: {const} PAVFrame): cint;
+ cdecl; external av__codec;
+
+ (**
+ * 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.
+ *)
+ function av_frame_get_plane_buffer(frame: PAVFrame; plane: cint): PAVBufferRef;
+ cdecl; external av__codec;
+
+ (**
+ * 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
+ *)
+ function av_frame_new_side_data(frame: PAVFrame;
+ type_: TAVFrameSideDataType;
+ size: cint): PAVFrameSideData;
+ cdecl; external av__codec;
+
+ (**
+ * @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.
+ *)
+ function av_frame_get_side_data(frame: {const} PAVFrame; type_: TAVFrameSideDataType): PAVFrameSideData;
+ cdecl; external av__codec;
+