diff options
Diffstat (limited to 'libavutil/frame.h')
| -rw-r--r-- | libavutil/frame.h | 218 |
1 files changed, 210 insertions, 8 deletions
diff --git a/libavutil/frame.h b/libavutil/frame.h index 5a04177598..56001a8798 100644 --- a/libavutil/frame.h +++ b/libavutil/frame.h @@ -1,18 +1,18 @@ /* - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg 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 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -83,15 +83,44 @@ enum AVFrameSideDataType { AV_FRAME_DATA_DISPLAYMATRIX, /** * Active Format Description data consisting of a single byte as specified - * in ETSI TS 101 154 using enum AVActiveFormatDescription. + * in ETSI TS 101 154 using AVActiveFormatDescription enum. */ AV_FRAME_DATA_AFD, - + /** + * Motion vectors exported by some codecs (on demand through the export_mvs + * flag set in the libavcodec AVCodecContext flags2 option). + * The data is the AVMotionVector struct defined in + * libavutil/motion_vector.h. + */ + AV_FRAME_DATA_MOTION_VECTORS, + /** + * Recommmends skipping the specified number of samples. This is exported + * only if the "skip_manual" AVOption is set in libavcodec. + * This has the same format as AV_PKT_DATA_SKIP_SAMPLES. + * @code + * u32le number of samples to skip from start of this packet + * u32le number of samples to skip from end of this packet + * u8 reason for start skip + * u8 reason for end skip (0=padding silence, 1=convergence) + * @endcode + */ + AV_FRAME_DATA_SKIP_SAMPLES, /** * This side data must be associated with an audio frame and corresponds to * enum AVAudioServiceType defined in avcodec.h. */ AV_FRAME_DATA_AUDIO_SERVICE_TYPE, + /** + * Mastering display metadata associated with a video frame. The payload is + * an AVMasteringDisplayMetadata type and contains information about the + * mastering display color volume. + */ + AV_FRAME_DATA_MASTERING_DISPLAY_METADATA, + /** + * The GOP timecode in 25 bit timecode format. Data format is 64-bit integer. + * This is set on the first frame of a GOP that has a temporal reference of 0. + */ + AV_FRAME_DATA_GOP_TIMECODE }; enum AVActiveFormatDescription { @@ -104,11 +133,19 @@ enum AVActiveFormatDescription { AV_AFD_SP_4_3 = 15, }; + +/** + * Structure to hold side data for an AVFrame. + * + * sizeof(AVFrameSideData) is not a part of the public ABI, so new fields may be added + * to the end with a minor bump. + */ typedef struct AVFrameSideData { enum AVFrameSideDataType type; uint8_t *data; int size; AVDictionary *metadata; + AVBufferRef *buf; } AVFrameSideData; /** @@ -136,12 +173,20 @@ typedef struct AVFrameSideData { * * 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. */ typedef struct AVFrame { #define AV_NUM_DATA_POINTERS 8 /** * 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. */ uint8_t *data[AV_NUM_DATA_POINTERS]; @@ -152,6 +197,11 @@ typedef struct AVFrame { * 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 multiples 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. */ @@ -216,7 +266,9 @@ typedef struct AVFrame { int64_t pkt_pts; /** - * DTS copied from the AVPacket that triggered returning this frame. + * DTS copied from the AVPacket that triggered returning this frame. (if frame threading isn't used) + * This is also the Presentation time of this AVFrame calculated from + * only AVPacket.dts values without pts values. */ int64_t pkt_dts; @@ -344,12 +396,26 @@ typedef struct AVFrame { */ int flags; + /** + * 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; enum AVColorPrimaries color_primaries; enum AVColorTransferCharacteristic color_trc; + /** + * 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; enum AVChromaLocation chroma_location; @@ -359,9 +425,140 @@ typedef struct AVFrame { * AVHWFramesContext describing the frame. */ AVBufferRef *hw_frames_ctx; + + /** + * frame timestamp estimated using various heuristics, in stream time base + * Code outside libavutil 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 libavutil 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 libavutil should access this field using: + * av_frame_get_pkt_duration(frame) + * - encoding: unused + * - decoding: Read by user. + */ + int64_t pkt_duration; + + /** + * metadata. + * Code outside libavutil 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 libavutil 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 libavutil 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; + +#if FF_API_FRAME_QP + /** + * QP table + * Not to be accessed directly from outside libavutil + */ + attribute_deprecated + int8_t *qscale_table; + /** + * QP store stride + * Not to be accessed directly from outside libavutil + */ + attribute_deprecated + int qstride; + + attribute_deprecated + int qscale_type; + + /** + * Not to be accessed directly from outside libavutil + */ + AVBufferRef *qp_table_buf; +#endif } AVFrame; /** + * 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 libavutil. + */ +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); +#if FF_API_FRAME_QP +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); +#endif +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); + +/** + * 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); + +/** * Allocate an AVFrame and set its fields to default values. The resulting * struct must be freed using av_frame_free(). * @@ -410,7 +607,7 @@ AVFrame *av_frame_clone(const AVFrame *src); void av_frame_unref(AVFrame *frame); /** - * Move everythnig contained in src to dst and reset src. + * Move everything contained in src to dst and reset src. */ void av_frame_move_ref(AVFrame *dst, AVFrame *src); @@ -520,6 +717,11 @@ AVFrameSideData *av_frame_get_side_data(const AVFrame *frame, void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type); /** + * @return a string identifying the side data type + */ +const char *av_frame_side_data_name(enum AVFrameSideDataType type); + +/** * @} */ |