#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
+#include "bsf.h"
+#include "codec.h"
#include "codec_desc.h"
+#include "codec_par.h"
#include "codec_id.h"
#include "packet.h"
#include "version.h"
* at least will not fail with AVERROR(EAGAIN). In general, no codec will
* permit unlimited buffering of input or output.
*
- * This API replaces the following legacy functions:
- * - avcodec_decode_video2() and avcodec_decode_audio4():
- * Use avcodec_send_packet() to feed input to the decoder, then use
- * avcodec_receive_frame() to receive decoded frames after each packet.
- * Unlike with the old video decoding API, multiple frames might result from
- * a packet. For audio, splitting the input packet into frames by partially
- * decoding packets becomes transparent to the API user. You never need to
- * feed an AVPacket to the API twice (unless it is rejected with AVERROR(EAGAIN) - then
- * no data was read from the packet).
- * Additionally, sending a flush/draining packet is required only once.
- * - avcodec_encode_video2()/avcodec_encode_audio2():
- * Use avcodec_send_frame() to feed input to the encoder, then use
- * avcodec_receive_packet() to receive encoded packets.
- * Providing user-allocated buffers for avcodec_receive_packet() is not
- * possible.
- * - The new API does not handle subtitles yet.
- *
- * Mixing new and old function calls on the same AVCodecContext is not allowed,
- * and will result in undefined behavior.
- *
- * Some codecs might require using the new API; using the old API will return
- * an error when calling it. All codecs support the new API.
- *
* A codec is not allowed to return AVERROR(EAGAIN) for both sending and receiving. This
* would be an invalid state, which could put the codec user into an endless
* loop. The API has no concept of time either: it cannot happen that trying to
/* /Fx */
/* codec capabilities */
-/**
- * Decoder can use draw_horiz_band callback.
- */
-#define AV_CODEC_CAP_DRAW_HORIZ_BAND (1 << 0)
-/**
- * Codec uses get_buffer() for allocating buffers and supports custom allocators.
- * If not set, it might not use get_buffer() at all or use operations that
- * assume the buffer was allocated by avcodec_default_get_buffer.
- */
-#define AV_CODEC_CAP_DR1 (1 << 1)
-#define AV_CODEC_CAP_TRUNCATED (1 << 3)
-/**
- * Encoder or decoder requires flushing with NULL input at the end in order to
- * give the complete and correct output.
- *
- * NOTE: If this flag is not set, the codec is guaranteed to never be fed with
- * with NULL data. The user can still send NULL data to the public encode
- * or decode function, but libavcodec will not pass it along to the codec
- * unless this flag is set.
- *
- * Decoders:
- * The decoder has a non-zero delay and needs to be fed with avpkt->data=NULL,
- * avpkt->size=0 at the end to get the delayed data until the decoder no longer
- * returns frames.
- *
- * Encoders:
- * The encoder needs to be fed with NULL data at the end of encoding until the
- * encoder no longer returns data.
- *
- * NOTE: For encoders implementing the AVCodec.encode2() function, setting this
- * flag also means that the encoder must set the pts and duration for
- * each output packet. If this flag is not set, the pts and duration will
- * be determined by libavcodec from the input frame.
- */
-#define AV_CODEC_CAP_DELAY (1 << 5)
-/**
- * Codec can be fed a final frame with a smaller size.
- * This can be used to prevent truncation of the last audio samples.
- */
-#define AV_CODEC_CAP_SMALL_LAST_FRAME (1 << 6)
-
-/**
- * Codec can output multiple frames per AVPacket
- * Normally demuxers return one frame at a time, demuxers which do not do
- * are connected to a parser to split what they return into proper frames.
- * This flag is reserved to the very rare category of codecs which have a
- * bitstream that cannot be split into frames without timeconsuming
- * operations like full decoding. Demuxers carrying such bitstreams thus
- * may return multiple frames in a packet. This has many disadvantages like
- * prohibiting stream copy in many cases thus it should only be considered
- * as a last resort.
- */
-#define AV_CODEC_CAP_SUBFRAMES (1 << 8)
-/**
- * Codec is experimental and is thus avoided in favor of non experimental
- * encoders
- */
-#define AV_CODEC_CAP_EXPERIMENTAL (1 << 9)
-/**
- * Codec should fill in channel configuration and samplerate instead of container
- */
-#define AV_CODEC_CAP_CHANNEL_CONF (1 << 10)
-/**
- * Codec supports frame-level multithreading.
- */
-#define AV_CODEC_CAP_FRAME_THREADS (1 << 12)
-/**
- * Codec supports slice-based (or partition-based) multithreading.
- */
-#define AV_CODEC_CAP_SLICE_THREADS (1 << 13)
-/**
- * Codec supports changed parameters at any point.
- */
-#define AV_CODEC_CAP_PARAM_CHANGE (1 << 14)
-/**
- * Codec supports avctx->thread_count == 0 (auto).
- */
-#define AV_CODEC_CAP_AUTO_THREADS (1 << 15)
-/**
- * Audio encoder supports receiving a different number of samples in each call.
- */
-#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE (1 << 16)
-/**
- * Decoder is not a preferred choice for probing.
- * This indicates that the decoder is not a good choice for probing.
- * It could for example be an expensive to spin up hardware decoder,
- * or it could simply not provide a lot of useful information about
- * the stream.
- * A decoder marked with this flag should only be used as last resort
- * choice for probing.
- */
-#define AV_CODEC_CAP_AVOID_PROBING (1 << 17)
-
-#if FF_API_UNUSED_CODEC_CAPS
-/**
- * Deprecated and unused. Use AVCodecDescriptor.props instead
- */
-#define AV_CODEC_CAP_INTRA_ONLY 0x40000000
-/**
- * Deprecated and unused. Use AVCodecDescriptor.props instead
- */
-#define AV_CODEC_CAP_LOSSLESS 0x80000000
-#endif
-
-/**
- * Codec is backed by a hardware implementation. Typically used to
- * identify a non-hwaccel hardware decoder. For information about hwaccels, use
- * avcodec_get_hw_config() instead.
- */
-#define AV_CODEC_CAP_HARDWARE (1 << 18)
-
-/**
- * Codec is potentially backed by a hardware implementation, but not
- * necessarily. This is used instead of AV_CODEC_CAP_HARDWARE, if the
- * implementation provides some sort of internal fallback.
- */
-#define AV_CODEC_CAP_HYBRID (1 << 19)
-
-/**
- * This codec takes the reordered_opaque field from input AVFrames
- * and returns it in the corresponding field in AVCodecContext after
- * encoding.
- */
-#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE (1 << 20)
-
-/**
- * This encoder can be flushed using avcodec_flush_buffers(). If this flag is
- * not set, the encoder must be closed and reopened to ensure that no frames
- * remain pending.
- */
-#define AV_CODEC_CAP_ENCODER_FLUSH (1 << 21)
-
/* Exported side data.
These flags can be passed in AVCodecContext.export_side_data before initialization.
*/
* Export the AVVideoEncParams structure through frame side data.
*/
#define AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS (1 << 2)
+/**
+ * Decoding only.
+ * Do not apply film grain, export it instead.
+ */
+#define AV_CODEC_EXPORT_DATA_FILM_GRAIN (1 << 3)
/**
* Pan Scan area.
* Maximum bitrate of the stream, in bits per second.
* Zero if unknown or unspecified.
*/
-#if FF_API_UNSANITIZED_BITRATES
- int max_bitrate;
-#else
int64_t max_bitrate;
-#endif
/**
* Minimum bitrate of the stream, in bits per second.
* Zero if unknown or unspecified.
*/
-#if FF_API_UNSANITIZED_BITRATES
- int min_bitrate;
-#else
int64_t min_bitrate;
-#endif
/**
* Average bitrate of the stream, in bits per second.
* Zero if unknown or unspecified.
*/
-#if FF_API_UNSANITIZED_BITRATES
- int avg_bitrate;
-#else
int64_t avg_bitrate;
-#endif
/**
* The size of the buffer to which the ratecontrol is applied, in bits.
* Zero if unknown or unspecified.
*/
- int buffer_size;
+ int64_t buffer_size;
/**
* The delay between the time the packet this structure is associated with
*/
#define AV_GET_BUFFER_FLAG_REF (1 << 0)
-struct AVCodecInternal;
+/**
+ * The encoder will keep a reference to the packet and may reuse it later.
+ */
+#define AV_GET_ENCODE_BUFFER_FLAG_REF (1 << 0)
-enum AVFieldOrder {
- AV_FIELD_UNKNOWN,
- AV_FIELD_PROGRESSIVE,
- AV_FIELD_TT, //< Top coded_first, top displayed first
- AV_FIELD_BB, //< Bottom coded first, bottom displayed first
- AV_FIELD_TB, //< Top coded first, bottom displayed first
- AV_FIELD_BT, //< Bottom coded first, top displayed first
-};
+struct AVCodecInternal;
/**
* main external API structure.
* picture width / height.
*
* @note Those fields may not match the values of the last
- * AVFrame output by avcodec_decode_video2 due frame
+ * AVFrame output by avcodec_receive_frame() due frame
* reordering.
*
* - encoding: MUST be set by user.
*/
float b_quant_factor;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int b_frame_strategy;
-#endif
-
/**
* qscale offset between IP and B-frames
* - encoding: Set by user.
*/
int has_b_frames;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int mpeg_quant;
-#endif
-
/**
* qscale factor between P- and I-frames
* If > 0 then the last P-frame quantizer will be used (q = lastp_q * factor + offset).
*/
int slice_count;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int prediction_method;
-#define FF_PRED_LEFT 0
-#define FF_PRED_PLANE 1
-#define FF_PRED_MEDIAN 2
-#endif
-
/**
* slice offsets in the frame in bytes
* - encoding: Set/allocated by libavcodec.
*/
int last_predictor_count;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int pre_me;
-#endif
-
/**
* motion estimation prepass comparison function
* - encoding: Set by user.
*/
uint16_t *inter_matrix;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int scenechange_threshold;
-
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int noise_reduction;
-#endif
-
/**
* precision of the intra DC coefficient - 8
* - encoding: Set by user.
*/
int mb_lmax;
-#if FF_API_PRIVATE_OPT
- /**
- * @deprecated use encoder private options instead
- */
- attribute_deprecated
- int me_penalty_compensation;
-#endif
-
/**
* - encoding: Set by user.
* - decoding: unused
*/
int bidir_refine;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int brd_scale;
-#endif
-
/**
* minimum GOP size
* - encoding: Set by user.
*/
int refs;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int chromaoffset;
-#endif
-
/**
* Note: Value depends upon the compare function used for fullpel ME.
* - encoding: Set by user.
*/
int mv0_threshold;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int b_sensitivity;
-#endif
-
/**
* Chromaticity coordinates of the source primaries.
* - encoding: Set by user
*
* Some decoders do not support linesizes changing between frames.
*
- * If frame multithreading is used and thread_safe_callbacks is set,
- * this callback may be called from a different thread, but not from more
- * than one at once. Does not need to be reentrant.
+ * If frame multithreading is used, this callback may be called from a
+ * different thread, but not from more than one at once. Does not need to be
+ * reentrant.
*
* @see avcodec_align_dimensions2()
*
*/
int (*get_buffer2)(struct AVCodecContext *s, AVFrame *frame, int flags);
- /**
- * If non-zero, the decoded audio and video frames returned from
- * avcodec_decode_video2() and avcodec_decode_audio4() are reference-counted
- * and are valid indefinitely. The caller must free them with
- * av_frame_unref() when they are not needed anymore.
- * Otherwise, the decoded frames must not be freed by the caller and are
- * only valid until the next decode call.
- *
- * This is always automatically enabled if avcodec_receive_frame() is used.
- *
- * - encoding: unused
- * - decoding: set by the caller before avcodec_open2().
- */
- attribute_deprecated
- int refcounted_frames;
-
/* - encoding parameters */
float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
*/
int rc_initial_buffer_occupancy;
-#if FF_API_CODER_TYPE
-#define FF_CODER_TYPE_VLC 0
-#define FF_CODER_TYPE_AC 1
-#define FF_CODER_TYPE_RAW 2
-#define FF_CODER_TYPE_RLE 3
- /**
- * @deprecated use encoder private options instead
- */
- attribute_deprecated
- int coder_type;
-#endif /* FF_API_CODER_TYPE */
-
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int context_model;
-#endif
-
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int frame_skip_threshold;
-
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int frame_skip_factor;
-
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int frame_skip_exp;
-
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int frame_skip_cmp;
-#endif /* FF_API_PRIVATE_OPT */
-
/**
* trellis RD quantization
* - encoding: Set by user.
*/
int trellis;
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int min_prediction_order;
-
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int max_prediction_order;
-
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int64_t timecode_frame_start;
-#endif
-
-#if FF_API_RTP_CALLBACK
- /**
- * @deprecated unused
- */
- /* The RTP callback: This function is called */
- /* every time the encoder has a packet to send. */
- /* It depends on the encoder if the data starts */
- /* with a Start Code (it should). H.263 does. */
- /* mb_nb contains the number of macroblocks */
- /* encoded in the RTP payload. */
- attribute_deprecated
- void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
-#endif
-
-#if FF_API_PRIVATE_OPT
- /** @deprecated use encoder private options instead */
- attribute_deprecated
- int rtp_payload_size; /* The size of the RTP payload: the coder will */
- /* do its best to deliver a chunk with size */
- /* below rtp_payload_size, the chunk will start */
- /* with a start code on some codecs like H.263. */
- /* This doesn't take account of any particular */
- /* headers inside the transmitted RTP payload. */
-#endif
-
-#if FF_API_STAT_BITS
- /* statistics, used for 2-pass encoding */
- attribute_deprecated
- int mv_bits;
- attribute_deprecated
- int header_bits;
- attribute_deprecated
- int i_tex_bits;
- attribute_deprecated
- int p_tex_bits;
- attribute_deprecated
- int i_count;
- attribute_deprecated
- int p_count;
- attribute_deprecated
- int skip_count;
- attribute_deprecated
- int misc_bits;
-
- /** @deprecated this field is unused */
- attribute_deprecated
- int frame_bits;
-#endif
-
/**
* pass1 encoding statistics output buffer
* - encoding: Set by libavcodec.
#define FF_DEBUG_BITSTREAM 4
#define FF_DEBUG_MB_TYPE 8
#define FF_DEBUG_QP 16
-#if FF_API_DEBUG_MV
-/**
- * @deprecated this option does nothing
- */
-#define FF_DEBUG_MV 32
-#endif
#define FF_DEBUG_DCT_COEFF 0x00000040
#define FF_DEBUG_SKIP 0x00000080
#define FF_DEBUG_STARTCODE 0x00000100
#define FF_DEBUG_ER 0x00000400
#define FF_DEBUG_MMCO 0x00000800
#define FF_DEBUG_BUGS 0x00001000
-#if FF_API_DEBUG_MV
-#define FF_DEBUG_VIS_QP 0x00002000
-#define FF_DEBUG_VIS_MB_TYPE 0x00004000
-#endif
#define FF_DEBUG_BUFFERS 0x00008000
#define FF_DEBUG_THREADS 0x00010000
#define FF_DEBUG_GREEN_MD 0x00800000
#define FF_DEBUG_NOMC 0x01000000
-#if FF_API_DEBUG_MV
- /**
- * debug
- * - encoding: Set by user.
- * - decoding: Set by user.
- */
- int debug_mv;
-#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 // visualize forward predicted MVs of P-frames
-#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 // visualize forward predicted MVs of B-frames
-#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 // visualize backward predicted MVs of B-frames
-#endif
-
/**
* Error recognition; may misdetect some more or less valid parts as errors.
- * - encoding: unused
+ * - encoding: Set by user.
* - decoding: Set by user.
*/
int err_recognition;
* For some hardware accelerators, a global context needs to be
* provided by the user. In that case, this holds display-dependent
* data FFmpeg cannot instantiate itself. Please refer to the
- * FFmpeg HW accelerator documentation to know how to fill this
- * is. e.g. for VA API, this is a struct vaapi_context.
+ * FFmpeg HW accelerator documentation to know how to fill this.
* - encoding: unused
* - decoding: Set by user
*/
*/
int bits_per_raw_sample;
-#if FF_API_LOWRES
/**
* low resolution decoding, 1-> 1/2 size, 2->1/4 size
* - encoding: unused
* - decoding: Set by user.
*/
int lowres;
-#endif
-
-#if FF_API_CODED_FRAME
- /**
- * the picture in the bitstream
- * - encoding: Set by libavcodec.
- * - decoding: unused
- *
- * @deprecated use the quality factor packet side data instead
- */
- attribute_deprecated AVFrame *coded_frame;
-#endif
/**
* thread count
*/
int active_thread_type;
+#if FF_API_THREAD_SAFE_CALLBACKS
/**
* Set by the client if its custom get_buffer() callback can be called
* synchronously from another thread, which allows faster multithreaded decoding.
* Ignored if the default get_buffer() is used.
* - encoding: Set by user.
* - decoding: Set by user.
+ *
+ * @deprecated the custom get_buffer2() callback should always be
+ * thread-safe. Thread-unsafe get_buffer2() implementations will be
+ * invalid starting with LIBAVCODEC_VERSION_MAJOR=60; in other words,
+ * libavcodec will behave as if this field was always set to 1.
+ * Callers that want to be forward compatible with future libavcodec
+ * versions should wrap access to this field in
+ * #if LIBAVCODEC_VERSION_MAJOR < 60
*/
+ attribute_deprecated
int thread_safe_callbacks;
+#endif
/**
* The codec may call this to execute several independent things.
#define FF_PROFILE_HEVC_MAIN_STILL_PICTURE 3
#define FF_PROFILE_HEVC_REXT 4
+#define FF_PROFILE_VVC_MAIN_10 1
+#define FF_PROFILE_VVC_MAIN_10_444 33
+
#define FF_PROFILE_AV1_MAIN 0
#define FF_PROFILE_AV1_HIGH 1
#define FF_PROFILE_AV1_PROFESSIONAL 2
#define FF_PROFILE_ARIB_PROFILE_A 0
#define FF_PROFILE_ARIB_PROFILE_C 1
+#define FF_PROFILE_KLVA_SYNC 0
+#define FF_PROFILE_KLVA_ASYNC 1
+
/**
* level
* - encoding: Set by user.
uint8_t *subtitle_header;
int subtitle_header_size;
-#if FF_API_VBV_DELAY
- /**
- * VBV delay coded in the last frame (in periods of a 27 MHz clock).
- * Used for compliant TS muxing.
- * - encoding: Set by libavcodec.
- * - decoding: unused.
- * @deprecated this value is now exported as a part of
- * AV_PKT_DATA_CPB_PROPERTIES packet side data
- */
- attribute_deprecated
- uint64_t vbv_delay;
-#endif
-
-#if FF_API_SIDEDATA_ONLY_PKT
- /**
- * Encoding only and set by default. 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.
- *
- * @deprecated this field disables the default behaviour and
- * it is kept only for compatibility.
- */
- attribute_deprecated
- int side_data_only_packets;
-#endif
-
/**
* Audio only. The number of "priming" samples (padding) inserted by the
* encoder at the beginning of the audio. I.e. this number of leading
*/
const AVCodecDescriptor *codec_descriptor;
-#if !FF_API_LOWRES
- /**
- * low resolution decoding, 1-> 1/2 size, 2->1/4 size
- * - encoding: unused
- * - decoding: Set by user.
- */
- int lowres;
-#endif
-
/**
* Current statistics for PTS correction.
* - decoding: maintained and used by libavcodec, not intended to be used by user apps
*/
int seek_preroll;
-#if !FF_API_DEBUG_MV
+#if FF_API_DEBUG_MV
/**
- * debug motion vectors
- * - encoding: Set by user.
- * - decoding: Set by user.
+ * @deprecated unused
*/
+ attribute_deprecated
int debug_mv;
#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
*/
int sub_text_format;
#define FF_SUB_TEXT_FMT_ASS 0
-#if FF_API_ASS_TIMING
-#define FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS 1
-#endif
/**
* Audio only. The amount of padding (in samples) appended by the encoder to
* - encoding: set by user
*/
int export_side_data;
-} AVCodecContext;
-
-#if FF_API_CODEC_GET_SET
-/**
- * Accessors for some AVCodecContext fields. These used to be provided for ABI
- * compatibility, and do not need to be used anymore.
- */
-attribute_deprecated
-AVRational av_codec_get_pkt_timebase (const AVCodecContext *avctx);
-attribute_deprecated
-void av_codec_set_pkt_timebase (AVCodecContext *avctx, AVRational val);
-
-attribute_deprecated
-const AVCodecDescriptor *av_codec_get_codec_descriptor(const AVCodecContext *avctx);
-attribute_deprecated
-void av_codec_set_codec_descriptor(AVCodecContext *avctx, const AVCodecDescriptor *desc);
-
-attribute_deprecated
-unsigned av_codec_get_codec_properties(const AVCodecContext *avctx);
-
-#if FF_API_LOWRES
-attribute_deprecated
-int av_codec_get_lowres(const AVCodecContext *avctx);
-attribute_deprecated
-void av_codec_set_lowres(AVCodecContext *avctx, int val);
-#endif
-
-attribute_deprecated
-int av_codec_get_seek_preroll(const AVCodecContext *avctx);
-attribute_deprecated
-void av_codec_set_seek_preroll(AVCodecContext *avctx, int val);
-
-attribute_deprecated
-uint16_t *av_codec_get_chroma_intra_matrix(const AVCodecContext *avctx);
-attribute_deprecated
-void av_codec_set_chroma_intra_matrix(AVCodecContext *avctx, uint16_t *val);
-#endif
-
-/**
- * AVProfile.
- */
-typedef struct AVProfile {
- int profile;
- const char *name; ///< short name for the profile
-} AVProfile;
-enum {
- /**
- * The codec supports this format via the hw_device_ctx interface.
- *
- * When selecting this format, AVCodecContext.hw_device_ctx should
- * have been set to a device of the specified type before calling
- * avcodec_open2().
- */
- AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX = 0x01,
/**
- * The codec supports this format via the hw_frames_ctx interface.
+ * This callback is called at the beginning of each packet to get a data
+ * buffer for it.
*
- * When selecting this format for a decoder,
- * AVCodecContext.hw_frames_ctx should be set to a suitable frames
- * context inside the get_format() callback. The frames context
- * must have been created on a device of the specified type.
+ * The following field will be set in the packet before this callback is
+ * called:
+ * - size
+ * This callback must use the above value to calculate the required buffer size,
+ * which must padded by at least AV_INPUT_BUFFER_PADDING_SIZE bytes.
+ *
+ * This callback must fill the following fields in the packet:
+ * - data: alignment requirements for AVPacket apply, if any. Some architectures and
+ * encoders may benefit from having aligned data.
+ * - buf: must contain a pointer to an AVBufferRef structure. The packet's
+ * data pointer must be contained in it. See: av_buffer_create(), av_buffer_alloc(),
+ * and av_buffer_ref().
*
- * When selecting this format for an encoder,
- * AVCodecContext.hw_frames_ctx should be set to the context which
- * will be used for the input frames before calling avcodec_open2().
- */
- AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX = 0x02,
- /**
- * The codec supports this format by some internal method.
+ * If AV_CODEC_CAP_DR1 is not set then get_encode_buffer() must call
+ * avcodec_default_get_encode_buffer() instead of providing a buffer allocated by
+ * some other means.
*
- * This format can be selected without any additional configuration -
- * no device or frames context is required.
- */
- AV_CODEC_HW_CONFIG_METHOD_INTERNAL = 0x04,
- /**
- * The codec supports this format by some ad-hoc method.
+ * The flags field may contain a combination of AV_GET_ENCODE_BUFFER_FLAG_ flags.
+ * They may be used for example to hint what use the buffer may get after being
+ * created.
+ * Implementations of this callback may ignore flags they don't understand.
+ * If AV_GET_ENCODE_BUFFER_FLAG_REF is set in flags then the packet may be reused
+ * (read and/or written to if it is writable) later by libavcodec.
*
- * Additional settings and/or function calls are required. See the
- * codec-specific documentation for details. (Methods requiring
- * this sort of configuration are deprecated and others should be
- * used in preference.)
- */
- AV_CODEC_HW_CONFIG_METHOD_AD_HOC = 0x08,
-};
-
-typedef struct AVCodecHWConfig {
- /**
- * For decoders, a hardware pixel format which that decoder may be
- * able to decode to if suitable hardware is available.
+ * This callback must be thread-safe, as when frame threading is used, it may
+ * be called from multiple threads simultaneously.
*
- * For encoders, a pixel format which the encoder may be able to
- * accept. If set to AV_PIX_FMT_NONE, this applies to all pixel
- * formats supported by the codec.
- */
- enum AVPixelFormat pix_fmt;
- /**
- * Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible
- * setup methods which can be used with this configuration.
- */
- int methods;
- /**
- * The device type associated with the configuration.
+ * @see avcodec_default_get_encode_buffer()
*
- * Must be set for AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX and
- * AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX, otherwise unused.
+ * - encoding: Set by libavcodec, user can override.
+ * - decoding: unused
*/
- enum AVHWDeviceType device_type;
-} AVCodecHWConfig;
-
-typedef struct AVCodecDefault AVCodecDefault;
+ int (*get_encode_buffer)(struct AVCodecContext *s, AVPacket *pkt, int flags);
+} AVCodecContext;
-struct AVSubtitle;
-
-/**
- * AVCodec.
- */
-typedef struct AVCodec {
- /**
- * Name of the codec implementation.
- * The name is globally unique among encoders and among decoders (but an
- * encoder and a decoder can share the same name).
- * This is the primary way to find a codec from the user perspective.
- */
- const char *name;
- /**
- * Descriptive name for the codec, meant to be more human readable than name.
- * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
- */
- const char *long_name;
- enum AVMediaType type;
- enum AVCodecID id;
- /**
- * Codec capabilities.
- * see AV_CODEC_CAP_*
- */
- int capabilities;
- const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
- const enum AVPixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
- const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
- const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
- const uint64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
- uint8_t max_lowres; ///< maximum value for lowres supported by the decoder
- const AVClass *priv_class; ///< AVClass for the private context
- const AVProfile *profiles; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
-
- /**
- * Group name of the codec implementation.
- * This is a short symbolic name of the wrapper backing this codec. A
- * wrapper uses some kind of external implementation for the codec, such
- * as an external library, or a codec implementation provided by the OS or
- * the hardware.
- * If this field is NULL, this is a builtin, libavcodec native codec.
- * If non-NULL, this will be the suffix in AVCodec.name in most cases
- * (usually AVCodec.name will be of the form "<codec_name>_<wrapper_name>").
- */
- const char *wrapper_name;
-
- /*****************************************************************
- * No fields below this line are part of the public API. They
- * may not be used outside of libavcodec and can be changed and
- * removed at will.
- * New public fields should be added right above.
- *****************************************************************
- */
- int priv_data_size;
- struct AVCodec *next;
- /**
- * @name Frame-level threading support functions
- * @{
- */
- /**
- * Copy necessary context variables from a previous thread context to the current one.
- * If not defined, the next thread will start automatically; otherwise, the codec
- * must call ff_thread_finish_setup().
- *
- * dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
- */
- int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src);
- /** @} */
-
- /**
- * Private codec-specific defaults.
- */
- const AVCodecDefault *defaults;
-
- /**
- * Initialize codec static data, called from avcodec_register().
- *
- * This is not intended for time consuming operations as it is
- * run for every codec regardless of that codec being used.
- */
- void (*init_static_data)(struct AVCodec *codec);
-
- int (*init)(AVCodecContext *);
- int (*encode_sub)(AVCodecContext *, uint8_t *buf, int buf_size,
- const struct AVSubtitle *sub);
- /**
- * Encode data to an AVPacket.
- *
- * @param avctx codec context
- * @param avpkt output AVPacket (may contain a user-provided buffer)
- * @param[in] frame AVFrame containing the raw data to be encoded
- * @param[out] got_packet_ptr encoder sets to 0 or 1 to indicate that a
- * non-empty packet was returned in avpkt.
- * @return 0 on success, negative error code on failure
- */
- int (*encode2)(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame,
- int *got_packet_ptr);
- int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
- int (*close)(AVCodecContext *);
- /**
- * Encode API with decoupled packet/frame dataflow. The API is the
- * same as the avcodec_ prefixed APIs (avcodec_send_frame() etc.), except
- * that:
- * - never called if the codec is closed or the wrong type,
- * - if AV_CODEC_CAP_DELAY is not set, drain frames are never sent,
- * - only one drain frame is ever passed down,
- */
- int (*send_frame)(AVCodecContext *avctx, const AVFrame *frame);
- int (*receive_packet)(AVCodecContext *avctx, AVPacket *avpkt);
-
- /**
- * Decode API with decoupled packet/frame dataflow. This function is called
- * to get one output frame. It should call ff_decode_get_packet() to obtain
- * input data.
- */
- int (*receive_frame)(AVCodecContext *avctx, AVFrame *frame);
- /**
- * Flush buffers.
- * Will be called when seeking
- */
- void (*flush)(AVCodecContext *);
- /**
- * Internal codec capabilities.
- * See FF_CODEC_CAP_* in internal.h
- */
- int caps_internal;
-
- /**
- * Decoding only, a comma-separated list of bitstream filters to apply to
- * packets before decoding.
- */
- const char *bsfs;
-
- /**
- * Array of pointers to hardware configurations supported by the codec,
- * or NULL if no hardware supported. The array is terminated by a NULL
- * pointer.
- *
- * The user can only access this field via avcodec_get_hw_config().
- */
- const struct AVCodecHWConfigInternal **hw_configs;
-
- /**
- * List of supported codec_tags, terminated by FF_CODEC_TAGS_END.
- */
- const uint32_t *codec_tags;
-} AVCodec;
-
-#if FF_API_CODEC_GET_SET
-attribute_deprecated
-int av_codec_get_max_lowres(const AVCodec *codec);
-#endif
-
-struct MpegEncContext;
-
-/**
- * Retrieve supported hardware configurations for a codec.
- *
- * Values of index from zero to some maximum return the indexed configuration
- * descriptor; all other values return NULL. If the codec does not support
- * any hardware configurations then it will always return NULL.
- */
-const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index);
+struct MpegEncContext;
/**
* @defgroup lavc_hwaccel AVHWAccel
* @}
*/
-#if FF_API_AVPICTURE
-/**
- * @defgroup lavc_picture AVPicture
- *
- * Functions for working with AVPicture
- * @{
- */
-
-/**
- * Picture data structure.
- *
- * Up to four components can be stored into it, the last component is
- * alpha.
- * @deprecated use AVFrame or imgutils functions instead
- */
-typedef struct AVPicture {
- attribute_deprecated
- uint8_t *data[AV_NUM_DATA_POINTERS]; ///< pointers to the image data planes
- attribute_deprecated
- int linesize[AV_NUM_DATA_POINTERS]; ///< number of bytes per line
-} AVPicture;
-
-/**
- * @}
- */
-#endif
-
enum AVSubtitleType {
SUBTITLE_NONE,
int h; ///< height of pict, undefined when pict is not set
int nb_colors; ///< number of colors in pict, undefined when pict is not set
-#if FF_API_AVPICTURE
- /**
- * @deprecated unused
- */
- attribute_deprecated
- AVPicture pict;
-#endif
/**
* data+linesize for the bitmap of this subtitle.
* Can be set for text/ass as well once they are rendered.
int64_t pts; ///< Same as packet pts, in AV_TIME_BASE
} AVSubtitle;
-/**
- * This struct describes the properties of an encoded stream.
- *
- * sizeof(AVCodecParameters) is not a part of the public ABI, this struct must
- * be allocated with avcodec_parameters_alloc() and freed with
- * avcodec_parameters_free().
- */
-typedef struct AVCodecParameters {
- /**
- * General type of the encoded data.
- */
- enum AVMediaType codec_type;
- /**
- * Specific type of the encoded data (the codec used).
- */
- enum AVCodecID codec_id;
- /**
- * Additional information about the codec (corresponds to the AVI FOURCC).
- */
- uint32_t codec_tag;
-
- /**
- * Extra binary data needed for initializing the decoder, codec-dependent.
- *
- * Must be allocated with av_malloc() and will be freed by
- * avcodec_parameters_free(). The allocated size of extradata must be at
- * least extradata_size + AV_INPUT_BUFFER_PADDING_SIZE, with the padding
- * bytes zeroed.
- */
- uint8_t *extradata;
- /**
- * Size of the extradata content in bytes.
- */
- int extradata_size;
-
- /**
- * - video: the pixel format, the value corresponds to enum AVPixelFormat.
- * - audio: the sample format, the value corresponds to enum AVSampleFormat.
- */
- int format;
-
- /**
- * The average bitrate of the encoded data (in bits per second).
- */
- int64_t bit_rate;
-
- /**
- * The number of bits per sample in the codedwords.
- *
- * This is basically the bitrate per sample. It is mandatory for a bunch of
- * formats to actually decode them. It's the number of bits for one sample in
- * the actual coded bitstream.
- *
- * This could be for example 4 for ADPCM
- * For PCM formats this matches bits_per_raw_sample
- * Can be 0
- */
- int bits_per_coded_sample;
-
- /**
- * This is the number of valid bits in each output sample. If the
- * sample format has more bits, the least significant bits are additional
- * padding bits, which are always 0. Use right shifts to reduce the sample
- * to its actual size. For example, audio formats with 24 bit samples will
- * have bits_per_raw_sample set to 24, and format set to AV_SAMPLE_FMT_S32.
- * To get the original sample use "(int32_t)sample >> 8"."
- *
- * For ADPCM this might be 12 or 16 or similar
- * Can be 0
- */
- int bits_per_raw_sample;
-
- /**
- * Codec-specific bitstream restrictions that the stream conforms to.
- */
- int profile;
- int level;
-
- /**
- * Video only. The dimensions of the video frame in pixels.
- */
- int width;
- int height;
-
- /**
- * Video only. The aspect ratio (width / height) which a single pixel
- * should have when displayed.
- *
- * When the aspect ratio is unknown / undefined, the numerator should be
- * set to 0 (the denominator may have any value).
- */
- AVRational sample_aspect_ratio;
-
- /**
- * Video only. The order of the fields in interlaced video.
- */
- enum AVFieldOrder field_order;
-
- /**
- * Video only. Additional colorspace characteristics.
- */
- enum AVColorRange color_range;
- enum AVColorPrimaries color_primaries;
- enum AVColorTransferCharacteristic color_trc;
- enum AVColorSpace color_space;
- enum AVChromaLocation chroma_location;
-
- /**
- * Video only. Number of delayed frames.
- */
- int video_delay;
-
- /**
- * Audio only. The channel layout bitmask. May be 0 if the channel layout is
- * unknown or unspecified, otherwise the number of bits set must be equal to
- * the channels field.
- */
- uint64_t channel_layout;
- /**
- * Audio only. The number of audio channels.
- */
- int channels;
- /**
- * Audio only. The number of audio samples per second.
- */
- int sample_rate;
- /**
- * Audio only. The number of bytes per coded audio frame, required by some
- * formats.
- *
- * Corresponds to nBlockAlign in WAVEFORMATEX.
- */
- int block_align;
- /**
- * Audio only. Audio frame size, if known. Required by some formats to be static.
- */
- int frame_size;
-
- /**
- * Audio only. The amount of padding (in samples) inserted by the encoder at
- * the beginning of the audio. I.e. this number of leading decoded samples
- * must be discarded by the caller to get the original audio without leading
- * padding.
- */
- int initial_padding;
- /**
- * Audio only. The amount of padding (in samples) appended by the encoder to
- * the end of the audio. I.e. this number of decoded samples must be
- * discarded by the caller from the end of the stream to get the original
- * audio without any trailing padding.
- */
- int trailing_padding;
- /**
- * Audio only. Number of samples to skip after a discontinuity.
- */
- int seek_preroll;
-} AVCodecParameters;
-
-/**
- * Iterate over all registered codecs.
- *
- * @param opaque a pointer where libavcodec will store the iteration state. Must
- * point to NULL to start the iteration.
- *
- * @return the next registered codec or NULL when the iteration is
- * finished
- */
-const AVCodec *av_codec_iterate(void **opaque);
-
-#if FF_API_NEXT
-/**
- * If c is NULL, returns the first registered codec,
- * if c is non-NULL, returns the next registered codec after c,
- * or NULL if c is the last one.
- */
-attribute_deprecated
-AVCodec *av_codec_next(const AVCodec *c);
-#endif
-
/**
* Return the LIBAVCODEC_VERSION_INT constant.
*/
*/
const char *avcodec_license(void);
-#if FF_API_NEXT
-/**
- * Register the codec codec and initialize libavcodec.
- *
- * @warning either this function or avcodec_register_all() must be called
- * before any other libavcodec functions.
- *
- * @see avcodec_register_all()
- */
-attribute_deprecated
-void avcodec_register(AVCodec *codec);
-
-/**
- * Register all the codecs, parsers and bitstream filters which were enabled at
- * configuration time. If you do not call this function you can select exactly
- * which formats you want to support, by using the individual registration
- * functions.
- *
- * @see avcodec_register
- * @see av_register_codec_parser
- * @see av_register_bitstream_filter
- */
-attribute_deprecated
-void avcodec_register_all(void);
-#endif
-
/**
* Allocate an AVCodecContext and set its fields to default values. The
* resulting struct should be freed with avcodec_free_context().
*/
void avcodec_free_context(AVCodecContext **avctx);
-#if FF_API_GET_CONTEXT_DEFAULTS
-/**
- * @deprecated This function should not be used, as closing and opening a codec
- * context multiple time is not supported. A new codec context should be
- * allocated for each new use.
- */
-int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec);
-#endif
-
/**
* Get the AVClass for AVCodecContext. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*/
const AVClass *avcodec_get_class(void);
-#if FF_API_COPY_CONTEXT
+#if FF_API_GET_FRAME_CLASS
/**
- * Get the AVClass for AVFrame. It can be used in combination with
- * AV_OPT_SEARCH_FAKE_OBJ for examining options.
- *
- * @see av_opt_find().
+ * @deprecated This function should not be used.
*/
+attribute_deprecated
const AVClass *avcodec_get_frame_class(void);
+#endif
/**
* Get the AVClass for AVSubtitleRect. It can be used in combination with
*/
const AVClass *avcodec_get_subtitle_rect_class(void);
-/**
- * Copy the settings of the source AVCodecContext into the destination
- * AVCodecContext. The resulting destination codec context will be
- * unopened, i.e. you are required to call avcodec_open2() before you
- * can use this AVCodecContext to decode/encode video/audio data.
- *
- * @param dest target codec context, should be initialized with
- * avcodec_alloc_context3(NULL), but otherwise uninitialized
- * @param src source codec context
- * @return AVERROR() on error (e.g. memory allocation error), 0 on success
- *
- * @deprecated The semantics of this function are ill-defined and it should not
- * be used. If you need to transfer the stream parameters from one codec context
- * to another, use an intermediate AVCodecParameters instance and the
- * avcodec_parameters_from_context() / avcodec_parameters_to_context()
- * functions.
- */
-attribute_deprecated
-int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
-#endif
-
-/**
- * Allocate a new AVCodecParameters and set its fields to default values
- * (unknown/invalid/0). The returned struct must be freed with
- * avcodec_parameters_free().
- */
-AVCodecParameters *avcodec_parameters_alloc(void);
-
-/**
- * Free an AVCodecParameters instance and everything associated with it and
- * write NULL to the supplied pointer.
- */
-void avcodec_parameters_free(AVCodecParameters **par);
-
-/**
- * Copy the contents of src to dst. Any allocated fields in dst are freed and
- * replaced with newly allocated duplicates of the corresponding fields in src.
- *
- * @return >= 0 on success, a negative AVERROR code on failure.
- */
-int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src);
-
/**
* Fill the parameters struct based on the values from the supplied codec
* context. Any allocated fields in par are freed and replaced with duplicates
* @ref avcodec_receive_frame()).
*
* @code
- * avcodec_register_all();
* av_dict_set(&opts, "b", "2.5M", 0);
* codec = avcodec_find_decoder(AV_CODEC_ID_H264);
* if (!codec)
* @{
*/
-/**
- * Find a registered decoder with a matching codec ID.
- *
- * @param id AVCodecID of the requested decoder
- * @return A decoder if one was found, NULL otherwise.
- */
-AVCodec *avcodec_find_decoder(enum AVCodecID id);
-
-/**
- * Find a registered decoder with the specified name.
- *
- * @param name name of the requested decoder
- * @return A decoder if one was found, NULL otherwise.
- */
-AVCodec *avcodec_find_decoder_by_name(const char *name);
-
/**
* The default callback for AVCodecContext.get_buffer2(). It is made public so
* it can be called by custom get_buffer2() implementations for decoders without
*/
int avcodec_default_get_buffer2(AVCodecContext *s, AVFrame *frame, int flags);
+/**
+ * The default callback for AVCodecContext.get_encode_buffer(). It is made public so
+ * it can be called by custom get_encode_buffer() implementations for encoders without
+ * AV_CODEC_CAP_DR1 set.
+ */
+int avcodec_default_get_encode_buffer(AVCodecContext *s, AVPacket *pkt, int flags);
+
/**
* Modify width and height values so that they will result in a memory
* buffer that is acceptable for the codec if you do not use any horizontal
enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos);
/**
- * Decode the audio frame of size avpkt->size from avpkt->data into frame.
- *
- * Some decoders may support multiple frames in a single AVPacket. Such
- * decoders would then just decode the first frame and the return value would be
- * less than the packet size. In this case, avcodec_decode_audio4 has to be
- * called again with an AVPacket containing the remaining data in order to
- * decode the second frame, etc... Even if no frames are returned, the packet
- * needs to be fed to the decoder with remaining data until it is completely
- * consumed or an error occurs.
+ * Decode a subtitle message.
+ * Return a negative value on error, otherwise return the number of bytes used.
+ * If no subtitle could be decompressed, got_sub_ptr is zero.
+ * Otherwise, the subtitle is stored in *sub.
+ * Note that AV_CODEC_CAP_DR1 is not available for subtitle codecs. This is for
+ * simplicity, because the performance difference is expected to be negligible
+ * and reusing a get_buffer written for video codecs would probably perform badly
+ * due to a potentially very different allocation pattern.
*
* Some decoders (those marked with AV_CODEC_CAP_DELAY) have a delay between input
* and output. This means that for some packets they will not immediately
* produce decoded output and need to be flushed at the end of decoding to get
* all the decoded data. Flushing is done by calling this function with packets
* with avpkt->data set to NULL and avpkt->size set to 0 until it stops
- * returning samples. It is safe to flush even those decoders that are not
- * marked with AV_CODEC_CAP_DELAY, then no samples will be returned.
- *
- * @warning The input buffer, avpkt->data must be AV_INPUT_BUFFER_PADDING_SIZE
- * larger than the actual read bytes because some optimized bitstream
- * readers read 32 or 64 bits at once and could read over the end.
- *
- * @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
- * before packets may be fed to the decoder.
- *
- * @param avctx the codec context
- * @param[out] frame The AVFrame in which to store decoded audio samples.
- * The decoder will allocate a buffer for the decoded frame by
- * calling the AVCodecContext.get_buffer2() callback.
- * When AVCodecContext.refcounted_frames is set to 1, the frame is
- * reference counted and the returned reference belongs to the
- * caller. The caller must release the frame using av_frame_unref()
- * when the frame is no longer needed. The caller may safely write
- * to the frame if av_frame_is_writable() returns 1.
- * When AVCodecContext.refcounted_frames is set to 0, the returned
- * reference belongs to the decoder and is valid only until the
- * next call to this function or until closing or flushing the
- * decoder. The caller may not write to it.
- * @param[out] got_frame_ptr Zero if no frame could be decoded, otherwise it is
- * non-zero. Note that this field being set to zero
- * does not mean that an error has occurred. For
- * decoders with AV_CODEC_CAP_DELAY set, no given decode
- * call is guaranteed to produce a frame.
- * @param[in] avpkt The input AVPacket containing the input buffer.
- * At least avpkt->data and avpkt->size should be set. Some
- * decoders might also require additional fields to be set.
- * @return A negative error code is returned if an error occurred during
- * decoding, otherwise the number of bytes consumed from the input
- * AVPacket is returned.
- *
-* @deprecated Use avcodec_send_packet() and avcodec_receive_frame().
- */
-attribute_deprecated
-int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame,
- int *got_frame_ptr, const AVPacket *avpkt);
-
-/**
- * Decode the video frame of size avpkt->size from avpkt->data into picture.
- * Some decoders may support multiple frames in a single AVPacket, such
- * decoders would then just decode the first frame.
- *
- * @warning The input buffer must be AV_INPUT_BUFFER_PADDING_SIZE larger than
- * the actual read bytes because some optimized bitstream readers read 32 or 64
- * bits at once and could read over the end.
- *
- * @warning The end of the input buffer buf should be set to 0 to ensure that
- * no overreading happens for damaged MPEG streams.
- *
- * @note Codecs which have the AV_CODEC_CAP_DELAY capability set have a delay
- * between input and output, these need to be fed with avpkt->data=NULL,
- * avpkt->size=0 at the end to return the remaining frames.
- *
- * @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
- * before packets may be fed to the decoder.
- *
- * @param avctx the codec context
- * @param[out] picture The AVFrame in which the decoded video frame will be stored.
- * Use av_frame_alloc() to get an AVFrame. The codec will
- * allocate memory for the actual bitmap by calling the
- * AVCodecContext.get_buffer2() callback.
- * When AVCodecContext.refcounted_frames is set to 1, the frame is
- * reference counted and the returned reference belongs to the
- * caller. The caller must release the frame using av_frame_unref()
- * when the frame is no longer needed. The caller may safely write
- * to the frame if av_frame_is_writable() returns 1.
- * When AVCodecContext.refcounted_frames is set to 0, the returned
- * reference belongs to the decoder and is valid only until the
- * next call to this function or until closing or flushing the
- * decoder. The caller may not write to it.
- *
- * @param[in] avpkt The input AVPacket containing the input buffer.
- * You can create such packet with av_init_packet() and by then setting
- * data and size, some decoders might in addition need other fields like
- * flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least
- * fields possible.
- * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
- * @return On error a negative value is returned, otherwise the number of bytes
- * used or zero if no frame could be decompressed.
- *
- * @deprecated Use avcodec_send_packet() and avcodec_receive_frame().
- */
-attribute_deprecated
-int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
- int *got_picture_ptr,
- const AVPacket *avpkt);
-
-/**
- * Decode a subtitle message.
- * Return a negative value on error, otherwise return the number of bytes used.
- * If no subtitle could be decompressed, got_sub_ptr is zero.
- * Otherwise, the subtitle is stored in *sub.
- * Note that AV_CODEC_CAP_DR1 is not available for subtitle codecs. This is for
- * simplicity, because the performance difference is expected to be negligible
- * and reusing a get_buffer written for video codecs would probably perform badly
- * due to a potentially very different allocation pattern.
- *
- * Some decoders (those marked with AV_CODEC_CAP_DELAY) have a delay between input
- * and output. This means that for some packets they will not immediately
- * produce decoded output and need to be flushed at the end of decoding to get
- * all the decoded data. Flushing is done by calling this function with packets
- * with avpkt->data set to NULL and avpkt->size set to 0 until it stops
- * returning subtitles. It is safe to flush even those decoders that are not
- * marked with AV_CODEC_CAP_DELAY, then no subtitles will be returned.
+ * returning subtitles. It is safe to flush even those decoders that are not
+ * marked with AV_CODEC_CAP_DELAY, then no subtitles will be returned.
*
* @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
* before packets may be fed to the decoder.
* larger than the actual read bytes because some optimized bitstream
* readers read 32 or 64 bits at once and could read over the end.
*
- * @warning Do not mix this API with the legacy API (like avcodec_decode_video2())
- * on the same AVCodecContext. It will return unexpected results now
- * or in future libavcodec versions.
- *
* @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
* before packets may be fed to the decoder.
*
typedef struct AVCodecParserContext {
void *priv_data;
- struct AVCodecParser *parser;
+ const struct AVCodecParser *parser;
int64_t frame_offset; /* offset of the current frame */
int64_t cur_offset; /* current offset
(incremented by each av_parser_parse()) */
*/
int key_frame;
-#if FF_API_CONVERGENCE_DURATION
- /**
- * @deprecated unused
- */
- attribute_deprecated
- int64_t convergence_duration;
-#endif
-
// Timestamp generation support:
/**
* Synchronization point for start of timestamp generation.
const uint8_t *buf, int buf_size);
void (*parser_close)(AVCodecParserContext *s);
int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
- struct AVCodecParser *next;
} AVCodecParser;
/**
*/
const AVCodecParser *av_parser_iterate(void **opaque);
-attribute_deprecated
-AVCodecParser *av_parser_next(const AVCodecParser *c);
-
-attribute_deprecated
-void av_register_codec_parser(AVCodecParser *parser);
AVCodecParserContext *av_parser_init(int codec_id);
/**
int64_t pts, int64_t dts,
int64_t pos);
-/**
- * @return 0 if the output buffer is a subset of the input, 1 if it is allocated and must be freed
- * @deprecated use AVBitStreamFilter
- */
-int av_parser_change(AVCodecParserContext *s,
- AVCodecContext *avctx,
- uint8_t **poutbuf, int *poutbuf_size,
- const uint8_t *buf, int buf_size, int keyframe);
void av_parser_close(AVCodecParserContext *s);
/**
* @{
*/
-/**
- * Find a registered encoder with a matching codec ID.
- *
- * @param id AVCodecID of the requested encoder
- * @return An encoder if one was found, NULL otherwise.
- */
-AVCodec *avcodec_find_encoder(enum AVCodecID id);
-
-/**
- * Find a registered encoder with the specified name.
- *
- * @param name name of the requested encoder
- * @return An encoder if one was found, NULL otherwise.
- */
-AVCodec *avcodec_find_encoder_by_name(const char *name);
-
-/**
- * Encode a frame of audio.
- *
- * Takes input samples from frame and writes the next output packet, if
- * available, to avpkt. The output packet does not necessarily contain data for
- * the most recent frame, as encoders can delay, split, and combine input frames
- * internally as needed.
- *
- * @param avctx codec context
- * @param avpkt output AVPacket.
- * The user can supply an output buffer by setting
- * avpkt->data and avpkt->size prior to calling the
- * function, but if the size of the user-provided data is not
- * large enough, encoding will fail. If avpkt->data and
- * avpkt->size are set, avpkt->destruct must also be set. All
- * other AVPacket fields will be reset by the encoder using
- * av_init_packet(). If avpkt->data is NULL, the encoder will
- * allocate it. The encoder will set avpkt->size to the size
- * of the output packet.
- *
- * If this function fails or produces no output, avpkt will be
- * freed using av_packet_unref().
- * @param[in] frame AVFrame containing the raw audio data to be encoded.
- * May be NULL when flushing an encoder that has the
- * AV_CODEC_CAP_DELAY capability set.
- * If AV_CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame
- * can have any number of samples.
- * If it is not set, frame->nb_samples must be equal to
- * avctx->frame_size for all frames except the last.
- * The final frame may be smaller than avctx->frame_size.
- * @param[out] got_packet_ptr This field is set to 1 by libavcodec if the
- * output packet is non-empty, and to 0 if it is
- * empty. If the function returns an error, the
- * packet can be assumed to be invalid, and the
- * value of got_packet_ptr is undefined and should
- * not be used.
- * @return 0 on success, negative error code on failure
- *
- * @deprecated use avcodec_send_frame()/avcodec_receive_packet() instead
- */
-attribute_deprecated
-int avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt,
- const AVFrame *frame, int *got_packet_ptr);
-
-/**
- * Encode a frame of video.
- *
- * Takes input raw video data from frame and writes the next output packet, if
- * available, to avpkt. The output packet does not necessarily contain data for
- * the most recent frame, as encoders can delay and reorder input frames
- * internally as needed.
- *
- * @param avctx codec context
- * @param avpkt output AVPacket.
- * The user can supply an output buffer by setting
- * avpkt->data and avpkt->size prior to calling the
- * function, but if the size of the user-provided data is not
- * large enough, encoding will fail. All other AVPacket fields
- * will be reset by the encoder using av_init_packet(). If
- * avpkt->data is NULL, the encoder will allocate it.
- * The encoder will set avpkt->size to the size of the
- * output packet. The returned data (if any) belongs to the
- * caller, he is responsible for freeing it.
- *
- * If this function fails or produces no output, avpkt will be
- * freed using av_packet_unref().
- * @param[in] frame AVFrame containing the raw video data to be encoded.
- * May be NULL when flushing an encoder that has the
- * AV_CODEC_CAP_DELAY capability set.
- * @param[out] got_packet_ptr This field is set to 1 by libavcodec if the
- * output packet is non-empty, and to 0 if it is
- * empty. If the function returns an error, the
- * packet can be assumed to be invalid, and the
- * value of got_packet_ptr is undefined and should
- * not be used.
- * @return 0 on success, negative error code on failure
- *
- * @deprecated use avcodec_send_frame()/avcodec_receive_packet() instead
- */
-attribute_deprecated
-int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt,
- const AVFrame *frame, int *got_packet_ptr);
-
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
const AVSubtitle *sub);
* @}
*/
-#if FF_API_AVPICTURE
-/**
- * @addtogroup lavc_picture
- * @{
- */
-
-/**
- * @deprecated unused
- */
-attribute_deprecated
-int avpicture_alloc(AVPicture *picture, enum AVPixelFormat pix_fmt, int width, int height);
-
-/**
- * @deprecated unused
- */
-attribute_deprecated
-void avpicture_free(AVPicture *picture);
-
-/**
- * @deprecated use av_image_fill_arrays() instead.
- */
-attribute_deprecated
-int avpicture_fill(AVPicture *picture, const uint8_t *ptr,
- enum AVPixelFormat pix_fmt, int width, int height);
-
-/**
- * @deprecated use av_image_copy_to_buffer() instead.
- */
-attribute_deprecated
-int avpicture_layout(const AVPicture *src, enum AVPixelFormat pix_fmt,
- int width, int height,
- unsigned char *dest, int dest_size);
-
-/**
- * @deprecated use av_image_get_buffer_size() instead.
- */
-attribute_deprecated
-int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);
-
-/**
- * @deprecated av_image_copy() instead.
- */
-attribute_deprecated
-void av_picture_copy(AVPicture *dst, const AVPicture *src,
- enum AVPixelFormat pix_fmt, int width, int height);
-
-/**
- * @deprecated unused
- */
-attribute_deprecated
-int av_picture_crop(AVPicture *dst, const AVPicture *src,
- enum AVPixelFormat pix_fmt, int top_band, int left_band);
-
-/**
- * @deprecated unused
- */
-attribute_deprecated
-int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum AVPixelFormat pix_fmt,
- int padtop, int padbottom, int padleft, int padright, int *color);
-
-/**
- * @}
- */
-#endif
-
/**
* @defgroup lavc_misc Utility functions
* @ingroup libavc
* @{
*/
-#if FF_API_GETCHROMA
-/**
- * @deprecated Use av_pix_fmt_get_chroma_sub_sample
- */
-
-attribute_deprecated
-void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift);
-#endif
-
/**
* Return a value representing the fourCC code associated to the
* pixel format pix_fmt, or 0 if no associated fourCC code can be
*/
unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat pix_fmt);
-/**
- * @deprecated see av_get_pix_fmt_loss()
- */
-int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt,
- int has_alpha);
-
/**
* Find the best pixel format to convert to given a certain source pixel
* format. When converting from one pixel format to another, information loss
enum AVPixelFormat src_pix_fmt,
int has_alpha, int *loss_ptr);
-/**
- * @deprecated see av_find_best_pix_fmt_of_2()
- */
-enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
- enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
-
-attribute_deprecated
-enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
- enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
-
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat * fmt);
/**
* @}
*/
-#if FF_API_TAG_STRING
-/**
- * Put a string representing the codec tag codec_tag in buf.
- *
- * @param buf buffer to place codec tag in
- * @param buf_size size in bytes of buf
- * @param codec_tag codec tag to assign
- * @return the length of the string that would have been generated if
- * enough space had been available, excluding the trailing null
- *
- * @deprecated see av_fourcc_make_string() and av_fourcc2str().
- */
-attribute_deprecated
-size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag);
-#endif
-
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
/**
*/
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes);
-#if FF_API_OLD_BSF
-typedef struct AVBitStreamFilterContext {
- void *priv_data;
- const struct AVBitStreamFilter *filter;
- AVCodecParserContext *parser;
- struct AVBitStreamFilterContext *next;
- /**
- * Internal default arguments, used if NULL is passed to av_bitstream_filter_filter().
- * Not for access by library users.
- */
- char *args;
-} AVBitStreamFilterContext;
-#endif
-
-typedef struct AVBSFInternal AVBSFInternal;
-
-/**
- * The bitstream filter state.
- *
- * This struct must be allocated with av_bsf_alloc() and freed with
- * av_bsf_free().
- *
- * The fields in the struct will only be changed (by the caller or by the
- * filter) as described in their documentation, and are to be considered
- * immutable otherwise.
- */
-typedef struct AVBSFContext {
- /**
- * A class for logging and AVOptions
- */
- const AVClass *av_class;
-
- /**
- * The bitstream filter this context is an instance of.
- */
- const struct AVBitStreamFilter *filter;
-
- /**
- * Opaque libavcodec internal data. Must not be touched by the caller in any
- * way.
- */
- AVBSFInternal *internal;
-
- /**
- * Opaque filter-specific private data. If filter->priv_class is non-NULL,
- * this is an AVOptions-enabled struct.
- */
- void *priv_data;
-
- /**
- * Parameters of the input stream. This field is allocated in
- * av_bsf_alloc(), it needs to be filled by the caller before
- * av_bsf_init().
- */
- AVCodecParameters *par_in;
-
- /**
- * Parameters of the output stream. This field is allocated in
- * av_bsf_alloc(), it is set by the filter in av_bsf_init().
- */
- AVCodecParameters *par_out;
-
- /**
- * The timebase used for the timestamps of the input packets. Set by the
- * caller before av_bsf_init().
- */
- AVRational time_base_in;
-
- /**
- * The timebase used for the timestamps of the output packets. Set by the
- * filter in av_bsf_init().
- */
- AVRational time_base_out;
-} AVBSFContext;
-
-typedef struct AVBitStreamFilter {
- const char *name;
-
- /**
- * A list of codec ids supported by the filter, terminated by
- * AV_CODEC_ID_NONE.
- * May be NULL, in that case the bitstream filter works with any codec id.
- */
- const enum AVCodecID *codec_ids;
-
- /**
- * A class for the private data, used to declare bitstream filter private
- * AVOptions. This field is NULL for bitstream filters that do not declare
- * any options.
- *
- * If this field is non-NULL, the first member of the filter private data
- * must be a pointer to AVClass, which will be set by libavcodec generic
- * code to this class.
- */
- const AVClass *priv_class;
-
- /*****************************************************************
- * No fields below this line are part of the public API. They
- * may not be used outside of libavcodec and can be changed and
- * removed at will.
- * New public fields should be added right above.
- *****************************************************************
- */
-
- int priv_data_size;
- int (*init)(AVBSFContext *ctx);
- int (*filter)(AVBSFContext *ctx, AVPacket *pkt);
- void (*close)(AVBSFContext *ctx);
- void (*flush)(AVBSFContext *ctx);
-} AVBitStreamFilter;
-
-#if FF_API_OLD_BSF
-/**
- * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
- * is deprecated. Use the new bitstream filtering API (using AVBSFContext).
- */
-attribute_deprecated
-void av_register_bitstream_filter(AVBitStreamFilter *bsf);
-/**
- * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
- * is deprecated. Use av_bsf_get_by_name(), av_bsf_alloc(), and av_bsf_init()
- * from the new bitstream filtering API (using AVBSFContext).
- */
-attribute_deprecated
-AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
-/**
- * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
- * is deprecated. Use av_bsf_send_packet() and av_bsf_receive_packet() from the
- * new bitstream filtering API (using AVBSFContext).
- */
-attribute_deprecated
-int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
- AVCodecContext *avctx, const char *args,
- uint8_t **poutbuf, int *poutbuf_size,
- const uint8_t *buf, int buf_size, int keyframe);
-/**
- * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
- * is deprecated. Use av_bsf_free() from the new bitstream filtering API (using
- * AVBSFContext).
- */
-attribute_deprecated
-void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
-/**
- * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
- * is deprecated. Use av_bsf_iterate() from the new bitstream filtering API (using
- * AVBSFContext).
- */
-attribute_deprecated
-const AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f);
-#endif
-
-/**
- * @return a bitstream filter with the specified name or NULL if no such
- * bitstream filter exists.
- */
-const AVBitStreamFilter *av_bsf_get_by_name(const char *name);
-
-/**
- * Iterate over all registered bitstream filters.
- *
- * @param opaque a pointer where libavcodec will store the iteration state. Must
- * point to NULL to start the iteration.
- *
- * @return the next registered bitstream filter or NULL when the iteration is
- * finished
- */
-const AVBitStreamFilter *av_bsf_iterate(void **opaque);
-#if FF_API_NEXT
-attribute_deprecated
-const AVBitStreamFilter *av_bsf_next(void **opaque);
-#endif
-
-/**
- * Allocate a context for a given bitstream filter. The caller must fill in the
- * context parameters as described in the documentation and then call
- * av_bsf_init() before sending any data to the filter.
- *
- * @param filter the filter for which to allocate an instance.
- * @param ctx a pointer into which the pointer to the newly-allocated context
- * will be written. It must be freed with av_bsf_free() after the
- * filtering is done.
- *
- * @return 0 on success, a negative AVERROR code on failure
- */
-int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **ctx);
-
-/**
- * Prepare the filter for use, after all the parameters and options have been
- * set.
- */
-int av_bsf_init(AVBSFContext *ctx);
-
-/**
- * Submit a packet for filtering.
- *
- * After sending each packet, the filter must be completely drained by calling
- * av_bsf_receive_packet() repeatedly until it returns AVERROR(EAGAIN) or
- * AVERROR_EOF.
- *
- * @param pkt the packet to filter. The bitstream filter will take ownership of
- * the packet and reset the contents of pkt. pkt is not touched if an error occurs.
- * If pkt is empty (i.e. NULL, or pkt->data is NULL and pkt->side_data_elems zero),
- * it signals the end of the stream (i.e. no more non-empty packets will be sent;
- * sending more empty packets does nothing) and will cause the filter to output
- * any packets it may have buffered internally.
- *
- * @return 0 on success, a negative AVERROR on error. This function never fails if
- * pkt is empty.
- */
-int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt);
-
-/**
- * Retrieve a filtered packet.
- *
- * @param[out] pkt this struct will be filled with the contents of the filtered
- * packet. It is owned by the caller and must be freed using
- * av_packet_unref() when it is no longer needed.
- * This parameter should be "clean" (i.e. freshly allocated
- * with av_packet_alloc() or unreffed with av_packet_unref())
- * when this function is called. If this function returns
- * successfully, the contents of pkt will be completely
- * overwritten by the returned data. On failure, pkt is not
- * touched.
- *
- * @return 0 on success. AVERROR(EAGAIN) if more packets need to be sent to the
- * filter (using av_bsf_send_packet()) to get more output. AVERROR_EOF if there
- * will be no further output from the filter. Another negative AVERROR value if
- * an error occurs.
- *
- * @note one input packet may result in several output packets, so after sending
- * a packet with av_bsf_send_packet(), this function needs to be called
- * repeatedly until it stops returning 0. It is also possible for a filter to
- * output fewer packets than were sent to it, so this function may return
- * AVERROR(EAGAIN) immediately after a successful av_bsf_send_packet() call.
- */
-int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt);
-
-/**
- * Reset the internal bitstream filter state / flush internal buffers.
- */
-void av_bsf_flush(AVBSFContext *ctx);
-
-/**
- * Free a bitstream filter context and everything associated with it; write NULL
- * into the supplied pointer.
- */
-void av_bsf_free(AVBSFContext **ctx);
-
-/**
- * Get the AVClass for AVBSFContext. It can be used in combination with
- * AV_OPT_SEARCH_FAKE_OBJ for examining options.
- *
- * @see av_opt_find().
- */
-const AVClass *av_bsf_get_class(void);
-
-/**
- * Structure for chain/list of bitstream filters.
- * Empty list can be allocated by av_bsf_list_alloc().
- */
-typedef struct AVBSFList AVBSFList;
-
-/**
- * Allocate empty list of bitstream filters.
- * The list must be later freed by av_bsf_list_free()
- * or finalized by av_bsf_list_finalize().
- *
- * @return Pointer to @ref AVBSFList on success, NULL in case of failure
- */
-AVBSFList *av_bsf_list_alloc(void);
-
-/**
- * Free list of bitstream filters.
- *
- * @param lst Pointer to pointer returned by av_bsf_list_alloc()
- */
-void av_bsf_list_free(AVBSFList **lst);
-
-/**
- * Append bitstream filter to the list of bitstream filters.
- *
- * @param lst List to append to
- * @param bsf Filter context to be appended
- *
- * @return >=0 on success, negative AVERROR in case of failure
- */
-int av_bsf_list_append(AVBSFList *lst, AVBSFContext *bsf);
-
-/**
- * Construct new bitstream filter context given it's name and options
- * and append it to the list of bitstream filters.
- *
- * @param lst List to append to
- * @param bsf_name Name of the bitstream filter
- * @param options Options for the bitstream filter, can be set to NULL
- *
- * @return >=0 on success, negative AVERROR in case of failure
- */
-int av_bsf_list_append2(AVBSFList *lst, const char * bsf_name, AVDictionary **options);
-/**
- * Finalize list of bitstream filters.
- *
- * This function will transform @ref AVBSFList to single @ref AVBSFContext,
- * so the whole chain of bitstream filters can be treated as single filter
- * freshly allocated by av_bsf_alloc().
- * If the call is successful, @ref AVBSFList structure is freed and lst
- * will be set to NULL. In case of failure, caller is responsible for
- * freeing the structure by av_bsf_list_free()
- *
- * @param lst Filter list structure to be transformed
- * @param[out] bsf Pointer to be set to newly created @ref AVBSFContext structure
- * representing the chain of bitstream filters
- *
- * @return >=0 on success, negative AVERROR in case of failure
- */
-int av_bsf_list_finalize(AVBSFList **lst, AVBSFContext **bsf);
-
-/**
- * Parse string describing list of bitstream filters and create single
- * @ref AVBSFContext describing the whole chain of bitstream filters.
- * Resulting @ref AVBSFContext can be treated as any other @ref AVBSFContext freshly
- * allocated by av_bsf_alloc().
- *
- * @param str String describing chain of bitstream filters in format
- * `bsf1[=opt1=val1:opt2=val2][,bsf2]`
- * @param[out] bsf Pointer to be set to newly created @ref AVBSFContext structure
- * representing the chain of bitstream filters
- *
- * @return >=0 on success, negative AVERROR in case of failure
- */
-int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf);
-
-/**
- * Get null/pass-through bitstream filter.
- *
- * @param[out] bsf Pointer to be set to new instance of pass-through bitstream filter
- *
- * @return
- */
-int av_bsf_get_null_filter(AVBSFContext **bsf);
-
/* memory */
/**
*/
unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
-#if FF_API_USER_VISIBLE_AVHWACCEL
-/**
- * Register the hardware accelerator hwaccel.
- *
- * @deprecated This function doesn't do anything.
- */
-attribute_deprecated
-void av_register_hwaccel(AVHWAccel *hwaccel);
-
-/**
- * If hwaccel is NULL, returns the first registered hardware accelerator,
- * if hwaccel is non-NULL, returns the next registered hardware accelerator
- * after hwaccel, or NULL if hwaccel is the last one.
- *
- * @deprecated AVHWaccel structures contain no user-serviceable parts, so
- * this function should not be used.
- */
-attribute_deprecated
-AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel);
-#endif
-
-#if FF_API_LOCKMGR
-/**
- * Lock operation used by lockmgr
- *
- * @deprecated Deprecated together with av_lockmgr_register().
- */
-enum AVLockOp {
- AV_LOCK_CREATE, ///< Create a mutex
- AV_LOCK_OBTAIN, ///< Lock the mutex
- AV_LOCK_RELEASE, ///< Unlock the mutex
- AV_LOCK_DESTROY, ///< Free mutex resources
-};
-
-/**
- * Register a user provided lock manager supporting the operations
- * 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. 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.
- *
- * @deprecated This function does nothing, and always returns 0. Be sure to
- * build with thread support to get basic thread safety.
- */
-attribute_deprecated
-int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
-#endif
-
-/**
- * Get the type of the given codec.
- */
-enum AVMediaType avcodec_get_type(enum AVCodecID codec_id);
-
-/**
- * Get the name of a codec.
- * @return a static string identifying the codec; never NULL
- */
-const char *avcodec_get_name(enum AVCodecID id);
-
/**
* @return a positive value if s is open (i.e. avcodec_open2() was called on it
* with no corresponding avcodec_close()), 0 otherwise.
*/
int avcodec_is_open(AVCodecContext *s);
-/**
- * @return a non-zero number if codec is an encoder, zero otherwise
- */
-int av_codec_is_encoder(const AVCodec *codec);
-
-/**
- * @return a non-zero number if codec is a decoder, zero otherwise
- */
-int av_codec_is_decoder(const AVCodec *codec);
-
/**
* Allocate a CPB properties structure and initialize its fields to default
* values.
projects / ffmpeg / blobdiff