/**
* This struct describes the properties of a single codec described by an
* AVCodecID.
- * @see avcodec_get_descriptor()
+ * @see avcodec_descriptor_get()
*/
typedef struct AVCodecDescriptor {
enum AVCodecID id;
* Codec supports lossless compression. Audio and video codecs only.
*/
#define AV_CODEC_PROP_LOSSLESS (1 << 2)
+/**
+ * Codec supports frame reordering. That is, the coded order (the order in which
+ * the encoded packets are output by the encoders / stored / input to the
+ * decoders) may be different from the presentation order of the corresponding
+ * frames.
+ *
+ * For codecs that do not have this property set, PTS and DTS should always be
+ * equal.
+ */
+#define AV_CODEC_PROP_REORDER (1 << 3)
/**
* @ingroup lavc_decoding
AVDISCARD_ALL = 48, ///< discard all
};
-enum AVColorPrimaries{
- AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
- AVCOL_PRI_UNSPECIFIED = 2,
- AVCOL_PRI_BT470M = 4,
- AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
- AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
- AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above
- AVCOL_PRI_FILM = 8,
- AVCOL_PRI_BT2020 = 9, ///< ITU-R BT2020
- AVCOL_PRI_NB , ///< Not part of ABI
-};
-
-enum AVColorTransferCharacteristic{
- AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361
- AVCOL_TRC_UNSPECIFIED = 2,
- AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
- AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG
- AVCOL_TRC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 or 625 / ITU-R BT1358 525 or 625 / ITU-R BT1700 NTSC
- AVCOL_TRC_SMPTE240M = 7,
- AVCOL_TRC_LINEAR = 8, ///< "Linear transfer characteristics"
- AVCOL_TRC_LOG = 9, ///< "Logarithmic transfer characteristic (100:1 range)"
- AVCOL_TRC_LOG_SQRT = 10, ///< "Logarithmic transfer characteristic (100 * Sqrt( 10 ) : 1 range)"
- AVCOL_TRC_IEC61966_2_4 = 11, ///< IEC 61966-2-4
- AVCOL_TRC_BT1361_ECG = 12, ///< ITU-R BT1361 Extended Colour Gamut
- AVCOL_TRC_IEC61966_2_1 = 13, ///< IEC 61966-2-1 (sRGB or sYCC)
- AVCOL_TRC_BT2020_10 = 14, ///< ITU-R BT2020 for 10 bit system
- AVCOL_TRC_BT2020_12 = 15, ///< ITU-R BT2020 for 12 bit system
- AVCOL_TRC_NB , ///< Not part of ABI
-};
-
-enum AVColorSpace{
- 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_YCOCG = 8, ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
- AVCOL_SPC_BT2020_NCL = 9, ///< ITU-R BT2020 non-constant luminance system
- AVCOL_SPC_BT2020_CL = 10, ///< ITU-R BT2020 constant luminance system
- AVCOL_SPC_NB , ///< Not part of ABI
-};
-
-enum AVColorRange{
- 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
-};
-
-/**
- * X X 3 4 X X are luma samples,
- * 1 2 1-6 are possible chroma positions
- * X X 5 6 X 0 is undefined/unknown position
- */
-enum AVChromaLocation{
- AVCHROMA_LOC_UNSPECIFIED = 0,
- AVCHROMA_LOC_LEFT = 1, ///< mpeg2/4, h264 default
- AVCHROMA_LOC_CENTER = 2, ///< mpeg1, jpeg, h263
- AVCHROMA_LOC_TOPLEFT = 3, ///< DV
- AVCHROMA_LOC_TOP = 4,
- AVCHROMA_LOC_BOTTOMLEFT = 5,
- AVCHROMA_LOC_BOTTOM = 6,
- AVCHROMA_LOC_NB , ///< Not part of ABI
-};
-
enum AVAudioServiceType {
AV_AUDIO_SERVICE_TYPE_MAIN = 0,
AV_AUDIO_SERVICE_TYPE_EFFECTS = 1,
* ReplayGain information in form of the AVReplayGain struct.
*/
AV_PKT_DATA_REPLAYGAIN,
+
+ /**
+ * This side data contains a 3x3 transformation matrix describing an affine
+ * transformation that needs to be applied to the decoded video frames for
+ * correct presentation.
+ *
+ * See libavutil/display.h for a detailed description of the data.
+ */
+ AV_PKT_DATA_DISPLAYMATRIX,
+
+ /**
+ * This side data should be associated with a video stream and contains
+ * Stereoscopic 3D information in form of the AVStereo3D struct.
+ */
+ AV_PKT_DATA_STEREO3D,
};
typedef struct AVPacketSideData {
* @param fmt is the list of formats which are supported by the codec,
* it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
* The first is always the native one.
+ * @note The callback may be called again immediately if initialization for
+ * the selected (hardware-accelerated) pixel format failed.
+ * @warning Behavior is undefined if the callback returns a value not
+ * in the fmt list of formats.
* @return the chosen format
* - encoding: unused
* - decoding: Set by user, if not set the native format will be chosen.
*/
int me_subpel_quality;
+#if FF_API_AFD
/**
* DTG active format information (additional aspect ratio
* information only used in DVB MPEG-2 transport streams)
*
* - encoding: unused
* - decoding: Set by decoder.
+ * @deprecated Deprecated in favor of AVSideData
*/
- int dtg_active_format;
+ attribute_deprecated int dtg_active_format;
#define FF_DTG_AFD_SAME 8
#define FF_DTG_AFD_4_3 9
#define FF_DTG_AFD_16_9 10
#define FF_DTG_AFD_4_3_SP_14_9 13
#define FF_DTG_AFD_16_9_SP_14_9 14
#define FF_DTG_AFD_SP_4_3 15
+#endif /* FF_API_AFD */
/**
* maximum motion estimation search range in subpel units
*/
int chromaoffset;
+#if FF_API_UNUSED_MEMBERS
/**
* Multiplied by qscale for each frame and added to scene_change_score.
* - encoding: Set by user.
* - decoding: unused
*/
- int scenechange_factor;
+ attribute_deprecated int scenechange_factor;
+#endif
/**
*
#define FF_CODER_TYPE_AC 1
#define FF_CODER_TYPE_RAW 2
#define FF_CODER_TYPE_RLE 3
+#if FF_API_UNUSED_MEMBERS
#define FF_CODER_TYPE_DEFLATE 4
+#endif /* FF_API_UNUSED_MEMBERS */
/**
* coder type
* - encoding: Set by user.
#define FF_DEBUG_DCT_COEFF 0x00000040
#define FF_DEBUG_SKIP 0x00000080
#define FF_DEBUG_STARTCODE 0x00000100
+#if FF_API_UNUSED_MEMBERS
#define FF_DEBUG_PTS 0x00000200
+#endif /* FF_API_UNUSED_MEMBERS */
#define FF_DEBUG_ER 0x00000400
#define FF_DEBUG_MMCO 0x00000800
#define FF_DEBUG_BUGS 0x00001000
/**
* opaque 64bit number (generally a PTS) that will be reordered and
* output in AVFrame.reordered_opaque
- * @deprecated in favor of pkt_pts
* - encoding: unused
* - decoding: Set by user.
*/
int dct_algo;
#define FF_DCT_AUTO 0
#define FF_DCT_FASTINT 1
+#if FF_API_UNUSED_MEMBERS
#define FF_DCT_INT 2
+#endif /* FF_API_UNUSED_MEMBERS */
#define FF_DCT_MMX 3
#define FF_DCT_ALTIVEC 5
#define FF_DCT_FAAN 6
#define FF_IDCT_SH4 9
#endif
#define FF_IDCT_SIMPLEARM 10
+#if FF_API_UNUSED_MEMBERS
#define FF_IDCT_IPP 13
+#endif /* FF_API_UNUSED_MEMBERS */
+#define FF_IDCT_XVID 14
+#if FF_API_IDCT_XVIDMMX
#define FF_IDCT_XVIDMMX 14
+#endif /* FF_API_IDCT_XVIDMMX */
#define FF_IDCT_SIMPLEARMV5TE 16
#define FF_IDCT_SIMPLEARMV6 17
#if FF_API_ARCH_SPARC
* - decoding: unused.
*/
uint64_t vbv_delay;
+
+ /**
+ * Encoding only. Allow encoders to output packets that do not contain any
+ * encoded data, only side data.
+ *
+ * Some encoders need to output such packets, e.g. to update some stream
+ * parameters at the end of encoding.
+ *
+ * All callers are strongly recommended to set this option to 1 and update
+ * their code to deal with such packets, since this behaviour may become
+ * always enabled in the future (then this option will be deprecated and
+ * later removed). To avoid ABI issues when this happens, the callers should
+ * use AVOptions to set this field.
+ */
+ int side_data_only_packets;
} AVCodecContext;
/**
*/
struct AVHWAccel *next;
+ /**
+ * Allocate a custom buffer
+ */
+ int (*alloc_frame)(AVCodecContext *avctx, AVFrame *frame);
+
/**
* Called at the beginning of each frame or field picture.
*
* AVCodecContext.release_buffer().
*/
int frame_priv_data_size;
+
+ /**
+ * Initialize the hwaccel private data.
+ *
+ * This will be called from ff_get_format(), after hwaccel and
+ * hwaccel_context are set and the hwaccel private data in AVCodecInternal
+ * is allocated.
+ */
+ int (*init)(AVCodecContext *avctx);
+
+ /**
+ * Uninitialize the hwaccel private data.
+ *
+ * This will be called from get_format() or avcodec_close(), after hwaccel
+ * and hwaccel_context are already uninitialized.
+ */
+ int (*uninit)(AVCodecContext *avctx);
+
+ /**
+ * Size of the private data to allocate in
+ * AVCodecInternal.hwaccel_priv_data.
+ */
+ int priv_data_size;
} AVHWAccel;
/**
void avcodec_register_all(void);
/**
- * Allocate an AVCodecContext and set its fields to default values. The
- * resulting struct can be deallocated by calling avcodec_close() on it followed
- * by av_free().
+ * Allocate an AVCodecContext and set its fields to default values. The
+ * resulting struct should be freed with avcodec_free_context().
*
* @param codec if non-NULL, allocate private data and initialize defaults
* for the given codec. It is illegal to then call avcodec_open2()
*/
AVCodecContext *avcodec_alloc_context3(const AVCodec *codec);
+/**
+ * Free the codec context and everything associated with it and write NULL to
+ * the provided pointer.
+ */
+void avcodec_free_context(AVCodecContext **avctx);
+
/**
* Set the fields of the given AVCodecContext to default values corresponding
* to the given codec (defaults may be codec-dependent).
*/
int av_packet_copy_props(AVPacket *dst, const AVPacket *src);
+/**
+ * Convert valid timing fields (timestamps / durations) in a packet from one
+ * timebase to another. Timestamps with unknown values (AV_NOPTS_VALUE) will be
+ * ignored.
+ *
+ * @param pkt packet on which the conversion will be performed
+ * @param tb_src source timebase, in which the timing fields in pkt are
+ * expressed
+ * @param tb_dst destination timebase, to which the timing fields will be
+ * converted
+ */
+void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst);
+
/**
* @}
*/
struct AVCodecParser *next;
} AVCodecParser;
-AVCodecParser *av_parser_next(AVCodecParser *c);
+AVCodecParser *av_parser_next(const AVCodecParser *c);
void av_register_codec_parser(AVCodecParser *parser);
AVCodecParserContext *av_parser_init(int codec_id);
const uint8_t *buf, int buf_size, int keyframe);
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
-AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f);
+AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f);
/* memory */
* if hwaccel is non-NULL, returns the next registered hardware accelerator
* after hwaccel, or NULL if hwaccel is the last one.
*/
-AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel);
+AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel);
/**
/**
* Register a user provided lock manager supporting the operations
- * specified by AVLockOp. mutex points to a (void *) where the
- * lockmgr should store/get a pointer to a user allocated mutex. It's
- * NULL upon AV_LOCK_CREATE and != NULL for all other ops.
+ * specified by AVLockOp. The "mutex" argument to the function points
+ * to a (void *) where the lockmgr should store/get a pointer to a user
+ * allocated mutex. It is NULL upon AV_LOCK_CREATE and equal to the
+ * value left by the last call for all other ops. If the lock manager is
+ * unable to perform the op then it should leave the mutex in the same
+ * state as when it was called and return a non-zero value. However,
+ * when called with AV_LOCK_DESTROY the mutex will always be assumed to
+ * have been successfully destroyed. If av_lockmgr_register succeeds
+ * it will return a non-negative value, if it fails it will return a
+ * negative value and destroy all mutex and unregister all callbacks.
+ * av_lockmgr_register is not thread-safe, it must be called from a
+ * single thread before any calls which make use of locking are used.
*
- * @param cb User defined callback. Note: Libav may invoke calls to this
- * callback during the call to av_lockmgr_register().
- * Thus, the application must be prepared to handle that.
- * If cb is set to NULL the lockmgr will be unregistered.
- * Also note that during unregistration the previously registered
- * lockmgr callback may also be invoked.
+ * @param cb User defined callback. av_lockmgr_register invokes calls
+ * to this callback and the previously registered callback.
+ * The callback will be used to create more than one mutex
+ * each of which must be backed by its own underlying locking
+ * mechanism (i.e. do not use a single static object to
+ * implement your lock manager). If cb is set to NULL the
+ * lockmgr will be unregistered.
*/
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
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