/*
* filter layer
- * copyright (c) 2007 Bobby Bingham
+ * Copyright (c) 2007 Bobby Bingham
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define AVFILTER_AVFILTER_H
#include "libavutil/avutil.h"
+#include "libavutil/samplefmt.h"
-#define LIBAVFILTER_VERSION_MAJOR 1
-#define LIBAVFILTER_VERSION_MINOR 46
-#define LIBAVFILTER_VERSION_MICRO 1
+#define LIBAVFILTER_VERSION_MAJOR 2
+#define LIBAVFILTER_VERSION_MINOR 2
+#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
#define LIBAVFILTER_BUILD LIBAVFILTER_VERSION_INT
#include <stddef.h>
-#include "libavcodec/avcodec.h"
/**
* Return the LIBAVFILTER_VERSION_INT constant.
* reallocating it from scratch.
*/
void (*free)(struct AVFilterBuffer *buf);
+
+ int format; ///< media format
+ int w, h; ///< width and height of the allocated buffer
} AVFilterBuffer;
#define AV_PERM_READ 0x01 ///< can read from 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
/**
* Audio specific properties in a reference to an AVFilterBuffer. Since
*/
typedef struct AVFilterBufferRefAudioProps {
int64_t channel_layout; ///< channel layout of audio buffer
- int samples_nb; ///< number of audio samples
+ int nb_samples; ///< number of audio samples
int size; ///< audio buffer size
uint32_t sample_rate; ///< audio buffer sample rate
int planar; ///< audio buffer - planar or packed
int linesize[8]; ///< number of bytes per line
int format; ///< media format
- int64_t pts; ///< presentation timestamp in units of 1/AV_TIME_BASE
+ /**
+ * 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 perms; ///< permissions, see the AV_PERM_* flags
* 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
+ * @param ref reference to the buffer, may be NULL
*/
void avfilter_unref_buffer(AVFilterBufferRef *ref);
unsigned refcount; ///< number of references to this list
struct AVFilterFormats ***refs; ///< references to this list
-} AVFilterFormats;;
+} AVFilterFormats;
/**
* Create a list of supported formats. This is intended for use in
int avfilter_add_format(AVFilterFormats **avff, int fmt);
/**
- * Return a list of all formats supported by FFmpeg for the given media type.
+ * Return a list of all formats supported by Libav for the given media type.
*/
AVFilterFormats *avfilter_all_formats(enum AVMediaType type);
* Input audio pads only.
*/
AVFilterBufferRef *(*get_audio_buffer)(AVFilterLink *link, int perms,
- enum SampleFormat sample_fmt, int size,
+ enum AVSampleFormat sample_fmt, int size,
int64_t channel_layout, int planar);
/**
/** default handler for get_audio_buffer() for audio inputs */
AVFilterBufferRef *avfilter_default_get_audio_buffer(AVFilterLink *link, int perms,
- enum SampleFormat sample_fmt, int size,
+ enum AVSampleFormat sample_fmt, int size,
int64_t channel_layout, int planar);
/**
/** get_audio_buffer() handler for filters which simply pass audio along */
AVFilterBufferRef *avfilter_null_get_audio_buffer(AVFilterLink *link, int perms,
- enum SampleFormat sample_fmt, int size,
+ enum AVSampleFormat sample_fmt, int size,
int64_t channel_layout, int planar);
/**
*/
struct AVFilterLink {
AVFilterContext *src; ///< source filter
- unsigned int srcpad; ///< index of the output pad on the source filter
+ AVFilterPad *srcpad; ///< output pad on the source filter
AVFilterContext *dst; ///< dest filter
- unsigned int dstpad; ///< index of the input pad on the dest filter
+ AVFilterPad *dstpad; ///< input pad on the dest filter
/** stage of the initialization of the link properties (dimensions, etc) */
enum {
enum AVMediaType type; ///< filter media type
- /* These two parameters apply only to video */
+ /* These parameters apply only to video */
int w; ///< agreed upon image width
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 avcodec.h)
+ int64_t channel_layout; ///< channel layout of current buffer (see libavutil/audioconvert.h)
int64_t sample_rate; ///< samples per second
int format; ///< agreed upon media format
AVFilterBufferRef *cur_buf;
AVFilterBufferRef *out_buf;
+
+ /**
+ * 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;
};
/**
AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms,
int w, int h);
+/**
+ * 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
+ */
+AVFilterBufferRef *
+avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms,
+ int w, int h, enum PixelFormat format);
+
/**
* Request an audio samples buffer with a specific set of permissions.
*
* @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_samples when you are finished with it.
+ * avfilter_unref_buffer when you are finished with it.
*/
AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
- enum SampleFormat sample_fmt, int size,
+ enum AVSampleFormat sample_fmt, int size,
int64_t channel_layout, int planar);
/**
int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque);
/**
- * Destroy a filter.
+ * Free a filter context.
*
- * @param filter the filter to destroy
+ * @param filter the filter to free
*/
-void avfilter_destroy(AVFilterContext *filter);
+void avfilter_free(AVFilterContext *filter);
/**
* Insert a filter in the middle of an existing link.
*
* @param link the link into which the filter should be inserted
* @param filt the filter to be inserted
- * @param in the input pad on the filter to connect
- * @param out the output pad on the filter to connect
+ * @param filt_srcpad_idx the input pad on the filter to connect
+ * @param filt_dstpad_idx the output pad on the filter to connect
* @return zero on success
*/
int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
- unsigned in, unsigned out);
+ unsigned filt_srcpad_idx, unsigned filt_dstpad_idx);
/**
* Insert a new pad.
projects / ffmpeg / blobdiff