Added frame.pas to ffmpeg-2.1

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@3054 b956fd51-792f-4845-bead-9b4dfca2ff2c

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
new file mode 100644
index 00000000..4a7150cf
--- /dev/null
+++ b/src/lib/ffmpeg-2.1/libavutil/frame.pas
@@ -0,0 +1,733 @@
+(*
+ * 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;
+