#define AVFILTER_AVFILTER_H
#include "libavutil/avutil.h"
+#include "libavutil/frame.h"
+#include "libavutil/log.h"
#include "libavutil/samplefmt.h"
#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
-
-#define LIBAVFILTER_VERSION_MAJOR 2
-#define LIBAVFILTER_VERSION_MINOR 4
-#define LIBAVFILTER_VERSION_MICRO 0
-
-#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
- LIBAVFILTER_VERSION_MINOR, \
- LIBAVFILTER_VERSION_MICRO)
-#define LIBAVFILTER_VERSION AV_VERSION(LIBAVFILTER_VERSION_MAJOR, \
- LIBAVFILTER_VERSION_MINOR, \
- LIBAVFILTER_VERSION_MICRO)
-#define LIBAVFILTER_BUILD LIBAVFILTER_VERSION_INT
+#include "libavcodec/avcodec.h"
#include <stddef.h>
+#include "libavfilter/version.h"
+
/**
* Return the LIBAVFILTER_VERSION_INT constant.
*/
typedef struct AVFilterContext AVFilterContext;
typedef struct AVFilterLink AVFilterLink;
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
*/
typedef struct AVFilterBuffer {
uint8_t *data[8]; ///< buffer data for each plane/channel
- int linesize[8]; ///< number of bytes per line
- unsigned refcount; ///< number of references to this buffer
+ /**
+ * 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;
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
* per reference properties must be separated out.
*/
typedef struct AVFilterBufferRefAudioProps {
- int64_t channel_layout; ///< channel layout of audio buffer
+ uint64_t channel_layout; ///< channel layout of audio buffer
int nb_samples; ///< number of audio samples
- int size; ///< audio buffer size
- uint32_t sample_rate; ///< audio buffer sample rate
+ int sample_rate; ///< audio buffer sample rate
int planar; ///< audio buffer - planar or packed
} AVFilterBufferRefAudioProps;
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
- int format; ///< media format
+
+ AVFilterBufferRefVideoProps *video; ///< video buffer specific properties
+ AVFilterBufferRefAudioProps *audio; ///< audio buffer specific properties
/**
* presentation timestamp. The time unit may change during
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
- AVFilterBufferRefVideoProps *video; ///< video buffer specific properties
- AVFilterBufferRefAudioProps *audio; ///< audio buffer specific properties
} AVFilterBufferRef;
/**
* Copy properties of src to dst, without copying the actual data
*/
-static inline void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
-{
- // copy common properties
- dst->pts = src->pts;
- dst->pos = src->pos;
-
- switch (src->type) {
- case AVMEDIA_TYPE_VIDEO: *dst->video = *src->video; break;
- case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
- }
-}
+attribute_deprecated
+void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src);
/**
* Add a new reference to a buffer.
* @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);
/**
* buffer, the buffer itself is also automatically freed.
*
* @param ref reference to the buffer, may be NULL
- */
-void avfilter_unref_buffer(AVFilterBufferRef *ref);
-
-/**
- * A list of supported formats for one end of a filter link. This is used
- * during the format negotiation process to try to pick the best format to
- * use to minimize the number of necessary conversions. Each filter gives a
- * list of the formats supported by each input and output pad. The list
- * given for each pad need not be distinct - they may be references to the
- * same list of formats, as is often the case when a filter supports multiple
- * formats, but will always output the same format as it is given in input.
- *
- * In this way, a list of possible input formats and a list of possible
- * output formats are associated with each link. When a set of formats is
- * negotiated over a link, the input and output lists are merged to form a
- * new list containing only the common elements of each list. In the case
- * that there were no common elements, a format conversion is necessary.
- * Otherwise, the lists are merged, and all other links which reference
- * either of the format lists involved in the merge are also affected.
- *
- * For example, consider the filter chain:
- * filter (a) --> (b) filter (b) --> (c) filter
- *
- * where the letters in parenthesis indicate a list of formats supported on
- * the input or output of the link. Suppose the lists are as follows:
- * (a) = {A, B}
- * (b) = {A, B, C}
- * (c) = {B, C}
- *
- * First, the first link's lists are merged, yielding:
- * filter (a) --> (a) filter (a) --> (c) filter
- *
- * Notice that format list (b) now refers to the same list as filter list (a).
- * Next, the lists for the second link are merged, yielding:
- * filter (a) --> (a) filter (a) --> (a) filter
- *
- * where (a) = {B}.
- *
- * Unfortunately, when the format lists at the two ends of a link are merged,
- * we must ensure that all links which reference either pre-merge format list
- * get updated as well. Therefore, we have the format list structure store a
- * pointer to each of the pointers to itself.
- */
-typedef struct AVFilterFormats {
- unsigned format_count; ///< number of formats
- int *formats; ///< list of media formats
-
- unsigned refcount; ///< number of references to this list
- struct AVFilterFormats ***refs; ///< references to this list
-} AVFilterFormats;
-
-/**
- * Create a list of supported formats. This is intended for use in
- * AVFilter->query_formats().
- *
- * @param fmts list of media formats, terminated by -1
- * @return the format list, with no existing references
- */
-AVFilterFormats *avfilter_make_format_list(const int *fmts);
-
-/**
- * Add fmt to the list of media formats contained in *avff.
- * If *avff is NULL the function allocates the filter formats struct
- * and puts its pointer in *avff.
- *
- * @return a non negative value in case of success, or a negative
- * value corresponding to an AVERROR code in case of error
- */
-int avfilter_add_format(AVFilterFormats **avff, int fmt);
-
-/**
- * Return a list of all formats supported by Libav for the given media type.
- */
-AVFilterFormats *avfilter_all_formats(enum AVMediaType type);
-
-/**
- * Return a format list which contains the intersection of the formats of
- * a and b. Also, all the references of a, all the references of b, and
- * a and b themselves will be deallocated.
*
- * If a and b do not share any common formats, neither is modified, and NULL
- * is returned.
+ * @note it is recommended to use avfilter_unref_bufferp() instead of this
+ * function
*/
-AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b);
-
-/**
- * Add *ref as a new reference to formats.
- * That is the pointers will point like in the ascii art below:
- * ________
- * |formats |<--------.
- * | ____ | ____|___________________
- * | |refs| | | __|_
- * | |* * | | | | | | AVFilterLink
- * | |* *--------->|*ref|
- * | |____| | | |____|
- * |________| |________________________
- */
-void avfilter_formats_ref(AVFilterFormats *formats, AVFilterFormats **ref);
-
-/**
- * If *ref is non-NULL, remove *ref as a reference to the format list
- * it currently points to, deallocates that list if this was the last
- * reference, and sets *ref to NULL.
- *
- * Before After
- * ________ ________ NULL
- * |formats |<--------. |formats | ^
- * | ____ | ____|________________ | ____ | ____|________________
- * | |refs| | | __|_ | |refs| | | __|_
- * | |* * | | | | | | AVFilterLink | |* * | | | | | | AVFilterLink
- * | |* *--------->|*ref| | |* | | | |*ref|
- * | |____| | | |____| | |____| | | |____|
- * |________| |_____________________ |________| |_____________________
- */
-void avfilter_formats_unref(AVFilterFormats **ref);
+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.
*
- * Before After
- * ________ ________
- * |formats |<---------. |formats |<---------.
- * | ____ | ___|___ | ____ | ___|___
- * | |refs| | | | | | |refs| | | | | NULL
- * | |* *--------->|*oldref| | |* *--------->|*newref| ^
- * | |* * | | |_______| | |* * | | |_______| ___|___
- * | |____| | | |____| | | | |
- * |________| |________| |*oldref|
- * |_______|
+ * @param ref pointer to the buffer reference
*/
-void avfilter_formats_changeref(AVFilterFormats **oldref,
- AVFilterFormats **newref);
+attribute_deprecated
+void avfilter_unref_bufferp(AVFilterBufferRef **ref);
+#endif
+#if FF_API_AVFILTERPAD_PUBLIC
/**
* A filter pad used for either input or output.
+ *
+ * @warning this struct will 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 {
/**
const char *name;
/**
- * AVFilterPad type. Only video supported now, hopefully someone will
- * add audio in the future.
+ * AVFilterPad type.
*/
enum AVMediaType type;
*
* Input pads only.
*/
- int min_perms;
+ attribute_deprecated int min_perms;
/**
* Permissions which are not accepted on incoming buffers. Any buffer
*
* Input pads only.
*/
- int rej_perms;
+ attribute_deprecated int rej_perms;
/**
- * Callback called before passing the first slice of a new frame. If
- * NULL, the filter layer will default to storing a reference to the
- * picture inside the link structure.
- *
- * Input video pads only.
+ * @deprecated unused
*/
- void (*start_frame)(AVFilterLink *link, AVFilterBufferRef *picref);
+ int (*start_frame)(AVFilterLink *link, AVFilterBufferRef *picref);
/**
* Callback function to get a video buffer. If NULL, the filter system will
*
* Input video pads only.
*/
- AVFilterBufferRef *(*get_video_buffer)(AVFilterLink *link, int perms, int w, int h);
+ AVFrame *(*get_video_buffer)(AVFilterLink *link, int w, int h);
/**
* Callback function to get an audio buffer. If NULL, the filter system will
*
* Input audio pads only.
*/
- AVFilterBufferRef *(*get_audio_buffer)(AVFilterLink *link, int perms,
- enum AVSampleFormat sample_fmt, int size,
- int64_t channel_layout, int planar);
+ AVFrame *(*get_audio_buffer)(AVFilterLink *link, int nb_samples);
/**
- * Callback called after the slices of a frame are completely sent. If
- * NULL, the filter layer will default to releasing the reference stored
- * in the link structure during start_frame().
- *
- * Input video pads only.
+ * @deprecated unused
*/
- void (*end_frame)(AVFilterLink *link);
+ int (*end_frame)(AVFilterLink *link);
/**
- * Slice drawing callback. This is where a filter receives video data
- * and should do its processing.
- *
- * Input video pads only.
+ * @deprecated unused
*/
- void (*draw_slice)(AVFilterLink *link, int y, int height, int slice_dir);
+ int (*draw_slice)(AVFilterLink *link, int y, int height, int slice_dir);
/**
- * Samples filtering callback. This is where a filter receives audio data
- * and should do its processing.
+ * Filtering callback. This is where a filter receives a frame with
+ * audio/video data and should do its processing.
*
- * Input audio pads only.
+ * Input pads only.
+ *
+ * @return >= 0 on success, a negative AVERROR on error. This function
+ * must ensure that samplesref is properly unreferenced on error if it
+ * hasn't been passed on to another filter.
*/
- void (*filter_samples)(AVFilterLink *link, AVFilterBufferRef *samplesref);
+ int (*filter_frame)(AVFilterLink *link, AVFrame *frame);
/**
* Frame poll callback. This returns the number of immediately available
*
* Defaults to just calling the source poll_frame() method.
*
- * Output video pads only.
+ * Output pads only.
*/
int (*poll_frame)(AVFilterLink *link);
* frame being output over the given link. This should return zero on
* success, and another value on error.
*
- * Output video pads only.
+ * Output pads only.
*/
int (*request_frame)(AVFilterLink *link);
* and another value on error.
*/
int (*config_props)(AVFilterLink *link);
-};
-
-/** default handler for start_frame() for video inputs */
-void avfilter_default_start_frame(AVFilterLink *link, AVFilterBufferRef *picref);
-
-/** default handler for draw_slice() for video inputs */
-void avfilter_default_draw_slice(AVFilterLink *link, int y, int h, int slice_dir);
-
-/** default handler for end_frame() for video inputs */
-void avfilter_default_end_frame(AVFilterLink *link);
-
-/** default handler for filter_samples() for audio inputs */
-void avfilter_default_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref);
-/** default handler for config_props() for audio/video outputs */
-int avfilter_default_config_output_link(AVFilterLink *link);
-
-/** default handler for config_props() for audio/video inputs */
-int avfilter_default_config_input_link (AVFilterLink *link);
-
-/** default handler for get_video_buffer() for video inputs */
-AVFilterBufferRef *avfilter_default_get_video_buffer(AVFilterLink *link,
- int perms, int w, int h);
+ /**
+ * The filter expects a fifo to be inserted on its input link,
+ * typically because it has a delay.
+ *
+ * input pads only.
+ */
+ int needs_fifo;
-/** default handler for get_audio_buffer() for audio inputs */
-AVFilterBufferRef *avfilter_default_get_audio_buffer(AVFilterLink *link, int perms,
- enum AVSampleFormat sample_fmt, int size,
- int64_t channel_layout, int planar);
+ int needs_writable;
+};
+#endif
/**
- * A helper for query_formats() which sets all links to the same list of
- * formats. If there are no links hooked to this filter, the list of formats is
- * freed.
+ * Get the name of an AVFilterPad.
+ *
+ * @param pads an array of AVFilterPads
+ * @param pad_idx index of the pad in the array it; is the caller's
+ * responsibility to ensure the index is valid
+ *
+ * @return name of the pad_idx'th pad in pads
*/
-void avfilter_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats);
-
-/** Default handler for query_formats() */
-int avfilter_default_query_formats(AVFilterContext *ctx);
-
-/** start_frame() handler for filters which simply pass video along */
-void avfilter_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref);
-
-/** draw_slice() handler for filters which simply pass video along */
-void avfilter_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir);
+const char *avfilter_pad_get_name(AVFilterPad *pads, int pad_idx);
-/** end_frame() handler for filters which simply pass video along */
-void avfilter_null_end_frame(AVFilterLink *link);
-
-/** filter_samples() handler for filters which simply pass audio along */
-void avfilter_null_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref);
-
-/** get_video_buffer() handler for filters which simply pass video along */
-AVFilterBufferRef *avfilter_null_get_video_buffer(AVFilterLink *link,
- int perms, int w, int h);
-
-/** get_audio_buffer() handler for filters which simply pass audio along */
-AVFilterBufferRef *avfilter_null_get_audio_buffer(AVFilterLink *link, int perms,
- enum AVSampleFormat sample_fmt, int size,
- int64_t channel_layout, int planar);
+/**
+ * Get the type of an AVFilterPad.
+ *
+ * @param pads an array of AVFilterPads
+ * @param pad_idx index of the pad in the array; it is the caller's
+ * responsibility to ensure the index is valid
+ *
+ * @return type of the pad_idx'th pad in pads
+ */
+enum AVMediaType avfilter_pad_get_type(AVFilterPad *pads, int pad_idx);
/**
* Filter definition. This defines the pads a filter contains, and all the
typedef struct AVFilter {
const char *name; ///< filter name
- int priv_size; ///< size of private data to allocate for the filter
+ /**
+ * A description for the filter. You should use the
+ * NULL_IF_CONFIG_SMALL() macro to define it.
+ */
+ const char *description;
+
+ const AVFilterPad *inputs; ///< NULL terminated list of inputs. NULL if none
+ const AVFilterPad *outputs; ///< NULL terminated list of outputs. NULL if none
+
+ /**
+ * A class for the private data, used to access filter private
+ * AVOptions.
+ */
+ const AVClass *priv_class;
+
+ /*****************************************************************
+ * All fields below this line are not part of the public API. They
+ * may not be used outside of libavfilter and can be changed and
+ * removed at will.
+ * New public fields should be added right above.
+ *****************************************************************
+ */
/**
* Filter initialization function. Args contains the user-supplied
* parameters. FIXME: maybe an AVOption-based system would be better?
- * opaque is data provided by the code requesting creation of the filter,
- * and is used to pass data to the filter.
*/
- int (*init)(AVFilterContext *ctx, const char *args, void *opaque);
+ int (*init)(AVFilterContext *ctx, const char *args);
/**
* Filter uninitialization function. Should deallocate any memory held
*/
int (*query_formats)(AVFilterContext *);
- const AVFilterPad *inputs; ///< NULL terminated list of inputs. NULL if none
- const AVFilterPad *outputs; ///< NULL terminated list of outputs. NULL if none
-
- /**
- * A description for the filter. You should use the
- * NULL_IF_CONFIG_SMALL() macro to define it.
- */
- const char *description;
+ int priv_size; ///< size of private data to allocate for the filter
} AVFilter;
/** An instance of a filter */
char *name; ///< name of this filter instance
- unsigned input_count; ///< number of input pads
AVFilterPad *input_pads; ///< array of input pads
AVFilterLink **inputs; ///< array of pointers to input links
+#if FF_API_FOO_COUNT
+ unsigned input_count; ///< @deprecated use nb_inputs
+#endif
+ unsigned nb_inputs; ///< number of input pads
- unsigned output_count; ///< number of output pads
AVFilterPad *output_pads; ///< array of output pads
AVFilterLink **outputs; ///< array of pointers to output links
+#if FF_API_FOO_COUNT
+ unsigned output_count; ///< @deprecated use nb_outputs
+#endif
+ unsigned nb_outputs; ///< number of output pads
void *priv; ///< private data for use by the filter
};
AVFilterContext *dst; ///< dest filter
AVFilterPad *dstpad; ///< input pad on the dest filter
- /** stage of the initialization of the link properties (dimensions, etc) */
- enum {
- AVLINK_UNINIT = 0, ///< not started
- AVLINK_STARTINIT, ///< started, but incomplete
- AVLINK_INIT ///< complete
- } init_state;
-
enum AVMediaType type; ///< filter media type
/* These parameters apply only to video */
int h; ///< agreed upon image height
AVRational sample_aspect_ratio; ///< agreed upon sample aspect ratio
/* These two parameters apply only to audio */
- int64_t channel_layout; ///< channel layout of current buffer (see libavutil/audioconvert.h)
- int64_t sample_rate; ///< samples per second
+ uint64_t channel_layout; ///< channel layout of current buffer (see libavutil/channel_layout.h)
+ int sample_rate; ///< samples per second
int format; ///< agreed upon media format
+ /**
+ * Define the time base used by the PTS of the frames/samples
+ * which will pass through this link.
+ * During the configuration stage, each filter is supposed to
+ * change only the output timebase, while the timebase of the
+ * input link is assumed to be an unchangeable property.
+ */
+ AVRational time_base;
+
+ /*****************************************************************
+ * All fields below this line are not part of the public API. They
+ * may not be used outside of libavfilter and can be changed and
+ * removed at will.
+ * New public fields should be added right above.
+ *****************************************************************
+ */
/**
* Lists of formats supported by the input and output filters respectively.
* These lists are used for negotiating the format to actually be used,
AVFilterFormats *out_formats;
/**
- * The buffer reference currently being sent across the link by the source
- * 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.
+ * Lists of channel layouts and sample rates used for automatic
+ * negotiation.
*/
- AVFilterBufferRef *src_buf;
-
- AVFilterBufferRef *cur_buf;
- AVFilterBufferRef *out_buf;
+ AVFilterFormats *in_samplerates;
+ AVFilterFormats *out_samplerates;
+ struct AVFilterChannelLayouts *in_channel_layouts;
+ struct AVFilterChannelLayouts *out_channel_layouts;
/**
- * Define the time base used by the PTS of the frames/samples
- * which will pass through this link.
- * During the configuration stage, each filter is supposed to
- * change only the output timebase, while the timebase of the
- * input link is assumed to be an unchangeable property.
+ * Audio only, the destination filter sets this to a non-zero value to
+ * request that buffers with the given number of samples should be sent to
+ * it. AVFilterPad.needs_fifo must also be set on the corresponding input
+ * pad.
+ * Last buffer before EOF will be padded with silence.
*/
- AVRational time_base;
+ int request_samples;
+
+ /** stage of the initialization of the link properties (dimensions, etc) */
+ enum {
+ AVLINK_UNINIT = 0, ///< not started
+ AVLINK_STARTINIT, ///< started, but incomplete
+ AVLINK_INIT ///< complete
+ } init_state;
};
/**
*/
int avfilter_config_links(AVFilterContext *filter);
-/**
- * Request a picture buffer with a specific set of permissions.
- *
- * @param link the output link to the filter from which the buffer will
- * be requested
- * @param perms the required access permissions
- * @param w the minimum width of the buffer to allocate
- * @param h the minimum height of the buffer to allocate
- * @return A reference to the buffer. This must be unreferenced with
- * avfilter_unref_buffer when you are finished with it.
- */
-AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms,
- int w, int h);
-
+#if FF_API_AVFILTERBUFFER
/**
* Create a buffer reference wrapped around an already allocated image
* buffer.
* @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 *data[4], int linesize[4], int perms,
- int w, int h, enum PixelFormat format);
+ int w, int h, enum AVPixelFormat format);
/**
- * Request an audio samples buffer with a specific set of permissions.
+ * Create an audio buffer reference wrapped around an already
+ * allocated samples buffer.
*
- * @param link the output link to the filter from which the buffer will
- * be requested
+ * @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 size the buffer size in bytes
- * @param channel_layout the number and type of channels per sample in the buffer to allocate
- * @param planar audio data layout - planar or packed
- * @return A reference to the samples. This must be unreferenced with
- * avfilter_unref_buffer when you are finished with it.
+ * @param channel_layout the channel layout of the buffer
*/
-AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
- enum AVSampleFormat sample_fmt, int size,
- int64_t channel_layout, int planar);
-
-/**
- * Request an input frame from the filter at the other end of the link.
- *
- * @param link the input link
- * @return zero on success
- */
-int avfilter_request_frame(AVFilterLink *link);
-
-/**
- * Poll a frame from the filter chain.
- *
- * @param link the input link
- * @return the number of immediately available frames, a negative
- * number in case of error
- */
-int avfilter_poll_frame(AVFilterLink *link);
-
-/**
- * Notifie the next filter of the start of a frame.
- *
- * @param link the output link the frame will be sent over
- * @param picref A reference to the frame about to be sent. The data for this
- * frame need only be valid once draw_slice() is called for that
- * portion. The receiving filter will free this reference when
- * it no longer needs it.
- */
-void avfilter_start_frame(AVFilterLink *link, AVFilterBufferRef *picref);
-
-/**
- * Notifie the next filter that the current frame has finished.
- *
- * @param link the output link the frame was sent over
- */
-void avfilter_end_frame(AVFilterLink *link);
-
-/**
- * Send a slice to the next filter.
- *
- * Slices have to be provided in sequential order, either in
- * top-bottom or bottom-top order. If slices are provided in
- * non-sequential order the behavior of the function is undefined.
- *
- * @param link the output link over which the frame is being sent
- * @param y offset in pixels from the top of the image for this slice
- * @param h height of this slice in pixels
- * @param slice_dir the assumed direction for sending slices,
- * from the top slice to the bottom slice if the value is 1,
- * from the bottom slice to the top slice if the value is -1,
- * for other values the behavior of the function is undefined.
- */
-void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir);
-
-/**
- * Send a buffer of audio samples to the next filter.
- *
- * @param link the output link over which the audio samples are being sent
- * @param samplesref a reference to the buffer of audio samples being sent. The
- * receiving filter will free this reference when it no longer
- * needs it or pass it on to the next filter.
- */
-void avfilter_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref);
+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);
+#endif
/** Initialize the filter system. Register all builtin filters. */
void avfilter_register_all(void);
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);
+
/**
- * Insert a new pad.
+ * Copy the frame properties and data pointers of src to dst, without copying
+ * the actual data.
*
- * @param idx Insertion point. Pad is inserted at the end if this point
- * is beyond the end of the list of pads.
- * @param count Pointer to the number of pads in the list
- * @param padidx_off Offset within an AVFilterLink structure to the element
- * to increment when inserting a new pad causes link
- * numbering to change
- * @param pads Pointer to the pointer to the beginning of the list of pads
- * @param links Pointer to the pointer to the beginning of the list of links
- * @param newpad The new pad to add. A copy is made when adding.
+ * @return 0 on success, a negative number on error.
*/
-void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
- AVFilterPad **pads, AVFilterLink ***links,
- AVFilterPad *newpad);
-
-/** Insert a new input pad for the filter. */
-static inline void avfilter_insert_inpad(AVFilterContext *f, unsigned index,
- AVFilterPad *p)
-{
- avfilter_insert_pad(index, &f->input_count, offsetof(AVFilterLink, dstpad),
- &f->input_pads, &f->inputs, p);
-}
-
-/** Insert a new output pad for the filter. */
-static inline void avfilter_insert_outpad(AVFilterContext *f, unsigned index,
- AVFilterPad *p)
-{
- avfilter_insert_pad(index, &f->output_count, offsetof(AVFilterLink, srcpad),
- &f->output_pads, &f->outputs, p);
-}
+attribute_deprecated
+int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src);
+#endif
#endif /* AVFILTER_AVFILTER_H */
projects / ffmpeg / blobdiff