typedef struct AVFilterPad AVFilterPad;
typedef struct AVFilterFormats AVFilterFormats;
-#if FF_API_AVFILTERBUFFER
-/**
- * A reference-counted buffer data type used by the filter system. Filters
- * should not store pointers to this structure directly, but instead use the
- * AVFilterBufferRef structure below.
- */
-typedef struct AVFilterBuffer {
- uint8_t *data[8]; ///< buffer data for each plane/channel
-
- /**
- * pointers to the data planes/channels.
- *
- * For video, this should simply point to data[].
- *
- * For planar audio, each channel has a separate data pointer, and
- * linesize[0] contains the size of each channel buffer.
- * For packed audio, there is just one data pointer, and linesize[0]
- * contains the total size of the buffer for all channels.
- *
- * Note: Both data and extended_data will always be set, but for planar
- * audio with more channels that can fit in data, extended_data must be used
- * in order to access all channels.
- */
- uint8_t **extended_data;
- int linesize[8]; ///< number of bytes per line
-
- /** private data to be used by a custom free function */
- void *priv;
- /**
- * A pointer to the function to deallocate this buffer if the default
- * function is not sufficient. This could, for example, add the memory
- * back into a memory pool to be reused later without the overhead of
- * reallocating it from scratch.
- */
- void (*free)(struct AVFilterBuffer *buf);
-
- int format; ///< media format
- int w, h; ///< width and height of the allocated buffer
- unsigned refcount; ///< number of references to this buffer
-} AVFilterBuffer;
-
-#define AV_PERM_READ 0x01 ///< can read from the buffer
-#define AV_PERM_WRITE 0x02 ///< can write to the buffer
-#define AV_PERM_PRESERVE 0x04 ///< nobody else can overwrite the buffer
-#define AV_PERM_REUSE 0x08 ///< can output the buffer multiple times, with the same contents each time
-#define AV_PERM_REUSE2 0x10 ///< can output the buffer multiple times, modified each time
-#define AV_PERM_NEG_LINESIZES 0x20 ///< the buffer requested can have negative linesizes
-#define AV_PERM_ALIGN 0x40 ///< the buffer must be aligned
-
-#define AVFILTER_ALIGN 16 //not part of ABI
-
-/**
- * Audio specific properties in a reference to an AVFilterBuffer. Since
- * AVFilterBufferRef is common to different media formats, audio specific
- * per reference properties must be separated out.
- */
-typedef struct AVFilterBufferRefAudioProps {
- uint64_t channel_layout; ///< channel layout of audio buffer
- int nb_samples; ///< number of audio samples per channel
- int sample_rate; ///< audio buffer sample rate
- int channels; ///< number of channels (do not access directly)
-} AVFilterBufferRefAudioProps;
-
-/**
- * Video specific properties in a reference to an AVFilterBuffer. Since
- * AVFilterBufferRef is common to different media formats, video specific
- * per reference properties must be separated out.
- */
-typedef struct AVFilterBufferRefVideoProps {
- int w; ///< image width
- int h; ///< image height
- AVRational sample_aspect_ratio; ///< sample aspect ratio
- int interlaced; ///< is frame interlaced
- int top_field_first; ///< field order
- enum AVPictureType pict_type; ///< picture type of the frame
- int key_frame; ///< 1 -> keyframe, 0-> not
- int qp_table_linesize; ///< qp_table stride
- int qp_table_size; ///< qp_table size
- int8_t *qp_table; ///< array of Quantization Parameters
-} AVFilterBufferRefVideoProps;
-
-/**
- * A reference to an AVFilterBuffer. Since filters can manipulate the origin of
- * a buffer to, for example, crop image without any memcpy, the buffer origin
- * and dimensions are per-reference properties. Linesize is also useful for
- * image flipping, frame to field filters, etc, and so is also per-reference.
- *
- * TODO: add anything necessary for frame reordering
- */
-typedef struct AVFilterBufferRef {
- AVFilterBuffer *buf; ///< the buffer that this is a reference to
- uint8_t *data[8]; ///< picture/audio data for each plane
- /**
- * pointers to the data planes/channels.
- *
- * For video, this should simply point to data[].
- *
- * For planar audio, each channel has a separate data pointer, and
- * linesize[0] contains the size of each channel buffer.
- * For packed audio, there is just one data pointer, and linesize[0]
- * contains the total size of the buffer for all channels.
- *
- * Note: Both data and extended_data will always be set, but for planar
- * audio with more channels that can fit in data, extended_data must be used
- * in order to access all channels.
- */
- uint8_t **extended_data;
- int linesize[8]; ///< number of bytes per line
-
- AVFilterBufferRefVideoProps *video; ///< video buffer specific properties
- AVFilterBufferRefAudioProps *audio; ///< audio buffer specific properties
-
- /**
- * presentation timestamp. The time unit may change during
- * filtering, as it is specified in the link and the filter code
- * may need to rescale the PTS accordingly.
- */
- int64_t pts;
- int64_t pos; ///< byte position in stream, -1 if unknown
-
- int format; ///< media format
-
- int perms; ///< permissions, see the AV_PERM_* flags
-
- enum AVMediaType type; ///< media type of buffer data
-
- AVDictionary *metadata; ///< dictionary containing metadata key=value tags
-} AVFilterBufferRef;
-
-/**
- * Copy properties of src to dst, without copying the actual data
- */
-attribute_deprecated
-void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src);
-
-/**
- * Add a new reference to a buffer.
- *
- * @param ref an existing reference to the buffer
- * @param pmask a bitmask containing the allowable permissions in the new
- * reference
- * @return a new reference to the buffer with the same properties as the
- * old, excluding any permissions denied by pmask
- */
-attribute_deprecated
-AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask);
-
-/**
- * Remove a reference to a buffer. If this is the last reference to the
- * buffer, the buffer itself is also automatically freed.
- *
- * @param ref reference to the buffer, may be NULL
- *
- * @note it is recommended to use avfilter_unref_bufferp() instead of this
- * function
- */
-attribute_deprecated
-void avfilter_unref_buffer(AVFilterBufferRef *ref);
-
-/**
- * Remove a reference to a buffer and set the pointer to NULL.
- * If this is the last reference to the buffer, the buffer itself
- * is also automatically freed.
- *
- * @param ref pointer to the buffer reference
- */
-attribute_deprecated
-void avfilter_unref_bufferp(AVFilterBufferRef **ref);
-#endif
-
-/**
- * Get the number of channels of a buffer reference.
- */
-attribute_deprecated
-int avfilter_ref_get_channels(AVFilterBufferRef *ref);
-
-#if FF_API_AVFILTERPAD_PUBLIC
-/**
- * A filter pad used for either input or output.
- *
- * See doc/filter_design.txt for details on how to implement the methods.
- *
- * @warning this struct might be removed from public API.
- * users should call avfilter_pad_get_name() and avfilter_pad_get_type()
- * to access the name and type fields; there should be no need to access
- * any other fields from outside of libavfilter.
- */
-struct AVFilterPad {
- /**
- * Pad name. The name is unique among inputs and among outputs, but an
- * input may have the same name as an output. This may be NULL if this
- * pad has no need to ever be referenced by name.
- */
- const char *name;
-
- /**
- * AVFilterPad type.
- */
- enum AVMediaType type;
-
- /**
- * Input pads:
- * Minimum required permissions on incoming buffers. Any buffer with
- * insufficient permissions will be automatically copied by the filter
- * system to a new buffer which provides the needed access permissions.
- *
- * Output pads:
- * Guaranteed permissions on outgoing buffers. Any buffer pushed on the
- * link must have at least these permissions; this fact is checked by
- * asserts. It can be used to optimize buffer allocation.
- */
- attribute_deprecated int min_perms;
-
- /**
- * Input pads:
- * Permissions which are not accepted on incoming buffers. Any buffer
- * which has any of these permissions set will be automatically copied
- * by the filter system to a new buffer which does not have those
- * permissions. This can be used to easily disallow buffers with
- * AV_PERM_REUSE.
- *
- * Output pads:
- * Permissions which are automatically removed on outgoing buffers. It
- * can be used to optimize buffer allocation.
- */
- attribute_deprecated int rej_perms;
-
- /**
- * @deprecated unused
- */
- int (*start_frame)(AVFilterLink *link, AVFilterBufferRef *picref);
-
- /**
- * Callback function to get a video buffer. If NULL, the filter system will
- * use ff_default_get_video_buffer().
- *
- * Input video pads only.
- */
- AVFrame *(*get_video_buffer)(AVFilterLink *link, int w, int h);
-
- /**
- * Callback function to get an audio buffer. If NULL, the filter system will
- * use ff_default_get_audio_buffer().
- *
- * Input audio pads only.
- */
- AVFrame *(*get_audio_buffer)(AVFilterLink *link, int nb_samples);
-
- /**
- * @deprecated unused
- */
- int (*end_frame)(AVFilterLink *link);
-
- /**
- * @deprecated unused
- */
- int (*draw_slice)(AVFilterLink *link, int y, int height, int slice_dir);
-
- /**
- * Filtering callback. This is where a filter receives a frame with
- * audio/video data and should do its processing.
- *
- * Input pads only.
- *
- * @return >= 0 on success, a negative AVERROR on error. This function
- * must ensure that frame is properly unreferenced on error if it
- * hasn't been passed on to another filter.
- */
- int (*filter_frame)(AVFilterLink *link, AVFrame *frame);
-
- /**
- * Frame poll callback. This returns the number of immediately available
- * samples. It should return a positive value if the next request_frame()
- * is guaranteed to return one frame (with no delay).
- *
- * Defaults to just calling the source poll_frame() method.
- *
- * Output pads only.
- */
- int (*poll_frame)(AVFilterLink *link);
-
- /**
- * Frame request callback. A call to this should result in at least one
- * frame being output over the given link. This should return zero on
- * success, and another value on error.
- * See ff_request_frame() for the error codes with a specific
- * meaning.
- *
- * Output pads only.
- */
- int (*request_frame)(AVFilterLink *link);
-
- /**
- * Link configuration callback.
- *
- * For output pads, this should set the following link properties:
- * video: width, height, sample_aspect_ratio, time_base
- * audio: sample_rate.
- *
- * This should NOT set properties such as format, channel_layout, etc which
- * are negotiated between filters by the filter system using the
- * query_formats() callback before this function is called.
- *
- * For input pads, this should check the properties of the link, and update
- * the filter's internal state as necessary.
- *
- * For both input and output pads, this should return zero on success,
- * and another value on error.
- */
- int (*config_props)(AVFilterLink *link);
-
- /**
- * The filter expects a fifo to be inserted on its input link,
- * typically because it has a delay.
- *
- * input pads only.
- */
- int needs_fifo;
-
- int needs_writable;
-};
-#endif
-
/**
* Get the number of elements in a NULL-terminated array of AVFilterPads (e.g.
* AVFilter.inputs/outputs).
AVFilterPad *input_pads; ///< array of input pads
AVFilterLink **inputs; ///< array of pointers to input links
-#if FF_API_FOO_COUNT
- attribute_deprecated unsigned input_count; ///< @deprecated use nb_inputs
-#endif
unsigned nb_inputs; ///< number of input pads
AVFilterPad *output_pads; ///< array of output pads
AVFilterLink **outputs; ///< array of pointers to output links
-#if FF_API_FOO_COUNT
- attribute_deprecated unsigned output_count; ///< @deprecated use nb_outputs
-#endif
unsigned nb_outputs; ///< number of output pads
void *priv; ///< private data for use by the filter
* allowed threading types. I.e. a threading type needs to be set in both
* to be allowed.
*
- * After the filter is initialzed, libavfilter sets this field to the
+ * After the filter is initialized, libavfilter sets this field to the
* threading type that is actually used (0 for no multithreading).
*/
int thread_type;
AVLINK_INIT ///< complete
} init_state;
- struct AVFilterPool *pool;
-
/**
* Graph the filter belongs to.
*/
*/
int max_samples;
- /**
- * The buffer reference currently being received across the link by the
- * destination filter. This is used internally by the filter system to
- * allow automatic copying of buffers which do not have sufficient
- * permissions for the destination. This should not be accessed directly
- * by the filters.
- */
- AVFilterBufferRef *cur_buf_copy;
-
/**
* True if the link is closed.
- * If set, all attemps of start_frame, filter_frame or request_frame
+ * If set, all attempts of start_frame, filter_frame or request_frame
* will fail with AVERROR_EOF, and if necessary the reference will be
* destroyed.
* If request_frame returns AVERROR_EOF, this flag is set on the
*/
int avfilter_config_links(AVFilterContext *filter);
-#if FF_API_AVFILTERBUFFER
-/**
- * Create a buffer reference wrapped around an already allocated image
- * buffer.
- *
- * @param data pointers to the planes of the image to reference
- * @param linesize linesizes for the planes of the image to reference
- * @param perms the required access permissions
- * @param w the width of the image specified by the data and linesize arrays
- * @param h the height of the image specified by the data and linesize arrays
- * @param format the pixel format of the image specified by the data and linesize arrays
- */
-attribute_deprecated
-AVFilterBufferRef *
-avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data[4], const int linesize[4], int perms,
- int w, int h, enum AVPixelFormat format);
-
-/**
- * Create an audio buffer reference wrapped around an already
- * allocated samples buffer.
- *
- * See avfilter_get_audio_buffer_ref_from_arrays_channels() for a version
- * that can handle unknown channel layouts.
- *
- * @param data pointers to the samples plane buffers
- * @param linesize linesize for the samples plane buffers
- * @param perms the required access permissions
- * @param nb_samples number of samples per channel
- * @param sample_fmt the format of each sample in the buffer to allocate
- * @param channel_layout the channel layout of the buffer
- */
-attribute_deprecated
-AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_arrays(uint8_t **data,
- int linesize,
- int perms,
- int nb_samples,
- enum AVSampleFormat sample_fmt,
- uint64_t channel_layout);
-/**
- * Create an audio buffer reference wrapped around an already
- * allocated samples buffer.
- *
- * @param data pointers to the samples plane buffers
- * @param linesize linesize for the samples plane buffers
- * @param perms the required access permissions
- * @param nb_samples number of samples per channel
- * @param sample_fmt the format of each sample in the buffer to allocate
- * @param channels the number of channels of the buffer
- * @param channel_layout the channel layout of the buffer,
- * must be either 0 or consistent with channels
- */
-attribute_deprecated
-AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_arrays_channels(uint8_t **data,
- int linesize,
- int perms,
- int nb_samples,
- enum AVSampleFormat sample_fmt,
- int channels,
- uint64_t channel_layout);
-
-#endif
-
-
#define AVFILTER_CMD_FLAG_ONE 1 ///< Stop once a filter understood the command (for target=all for example), fast filters are favored automatically
#define AVFILTER_CMD_FLAG_FAST 2 ///< Only execute command when its fast (like a video out that supports contrast adjustment in hw)
int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
unsigned filt_srcpad_idx, unsigned filt_dstpad_idx);
-#if FF_API_AVFILTERBUFFER
-/**
- * Copy the frame properties of src to dst, without copying the actual
- * image data.
- *
- * @return 0 on success, a negative number on error.
- */
-attribute_deprecated
-int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src);
-
-/**
- * Copy the frame properties and data pointers of src to dst, without copying
- * the actual data.
- *
- * @return 0 on success, a negative number on error.
- */
-attribute_deprecated
-int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src);
-#endif
-
/**
* @return AVClass for AVFilterContext.
*
typedef struct AVFilterGraph {
const AVClass *av_class;
-#if FF_API_FOO_COUNT
- attribute_deprecated
- unsigned filter_count_unused;
-#endif
AVFilterContext **filters;
-#if !FF_API_FOO_COUNT
unsigned nb_filters;
-#endif
char *scale_sws_opts; ///< sws options to use for the auto-inserted scale filters
char *resample_lavr_opts; ///< libavresample options to use for the auto-inserted resample filters
-#if FF_API_FOO_COUNT
- unsigned nb_filters;
-#endif
/**
* Type of multithreading allowed for filters in this graph. A combination
/**
* Allocate a filter graph.
+ *
+ * @return the allocated filter graph on success or NULL.
*/
AVFilterGraph *avfilter_graph_alloc(void);
*
* @return the context of the newly created filter instance (note that it is
* also retrievable directly through AVFilterGraph.filters or with
- * avfilter_graph_get_filter()) on success or NULL or failure.
+ * avfilter_graph_get_filter()) on success or NULL on failure.
*/
AVFilterContext *avfilter_graph_alloc_filter(AVFilterGraph *graph,
const AVFilter *filter,
const char *name);
/**
- * Get a filter instance with name name from graph.
+ * Get a filter instance identified by instance name from graph.
*
+ * @param graph filter graph to search through.
+ * @param name filter instance name (should be unique in the graph).
* @return the pointer to the found filter instance or NULL if it
* cannot be found.
*/
-AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name);
+AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, const char *name);
#if FF_API_AVFILTER_OPEN
/**
*/
void avfilter_inout_free(AVFilterInOut **inout);
-#if AV_HAVE_INCOMPATIBLE_LIBAV_ABI || !FF_API_OLD_GRAPH_PARSE
/**
* Add a graph described by a string to a graph.
*
* outputs of the already existing filters, which are provided as
* inputs to the parsed filters.
*
- * @param graph the filter graph where to link the parsed grap context
+ * @param graph the filter graph where to link the parsed graph context
* @param filters string to be parsed
* @param inputs linked list to the inputs of the graph
* @param outputs linked list to the outputs of the graph
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
AVFilterInOut *inputs, AVFilterInOut *outputs,
void *log_ctx);
-#else
-/**
- * Add a graph described by a string to a graph.
- *
- * @param graph the filter graph where to link the parsed graph context
- * @param filters string to be parsed
- * @param inputs pointer to a linked list to the inputs of the graph, may be NULL.
- * If non-NULL, *inputs is updated to contain the list of open inputs
- * after the parsing, should be freed with avfilter_inout_free().
- * @param outputs pointer to a linked list to the outputs of the graph, may be NULL.
- * If non-NULL, *outputs is updated to contain the list of open outputs
- * after the parsing, should be freed with avfilter_inout_free().
- * @return non negative on success, a negative AVERROR code on error
- * @deprecated Use avfilter_graph_parse_ptr() instead.
- */
-attribute_deprecated
-int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
- AVFilterInOut **inputs, AVFilterInOut **outputs,
- void *log_ctx);
-#endif
/**
* Add a graph described by a string to a graph.
*
+ * In the graph filters description, if the input label of the first
+ * filter is not specified, "in" is assumed; if the output label of
+ * the last filter is not specified, "out" is assumed.
+ *
* @param graph the filter graph where to link the parsed graph context
* @param filters string to be parsed
* @param inputs pointer to a linked list to the inputs of the graph, may be NULL.
* "all" sends to all filters
* otherwise it can be a filter or filter instance name
* which will send the command to all matching filters.
- * @param cmd the command to sent, for handling simplicity all commands must be alphanummeric only
+ * @param cmd the command to sent, for handling simplicity all commands must be alphanumeric only
* @param arg the argument for the command
* @param ts time at which the command should be sent to the filter
*