/*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
*/
#include "avfilter.h"
+#include "avfiltergraph.h"
+#include "formats.h"
+#include "video.h"
+
+#define POOL_SIZE 32
+typedef struct AVFilterPool {
+ AVFilterBufferRef *pic[POOL_SIZE];
+ int count;
+ int refcount;
+ int draining;
+} AVFilterPool;
+
+typedef struct AVFilterCommand {
+ double time; ///< time expressed in seconds
+ char *command; ///< command
+ char *arg; ///< optional argument for the command
+ int flags;
+ struct AVFilterCommand *next;
+} AVFilterCommand;
+
+/**
+ * Update the position of a link in the age heap.
+ */
+void ff_avfilter_graph_update_heap(AVFilterGraph *graph, AVFilterLink *link);
#if !FF_API_AVFILTERPAD_PUBLIC
/**
* picture inside the link structure.
*
* Input video pads only.
+ *
+ * @return >= 0 on success, a negative AVERROR on error. picref will be
+ * unreferenced by the caller in case of error.
*/
void (*start_frame)(AVFilterLink *link, AVFilterBufferRef *picref);
* in the link structure during start_frame().
*
* Input video pads only.
+ *
+ * @return >= 0 on success, a negative AVERROR on error.
*/
- 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.
+ *
+ * @return >= 0 on success, a negative AVERROR on error.
*/
- 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.
*
* Input audio 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_samples)(AVFilterLink *link, AVFilterBufferRef *samplesref);
/**
* Frame poll callback. This returns the number of immediately available
* 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;
};
#endif
/** Tell is a format is contained in the provided list terminated by -1. */
int ff_fmt_is_in(int fmt, const int *fmts);
-#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
+/**
+ * Return a copy of a list of integers terminated by -1, or NULL in
+ * case of copy failure.
+ */
+int *ff_copy_int_list(const int * const list);
+
+/**
+ * Return a copy of a list of 64-bit integers, or NULL in case of
+ * copy failure.
+ */
+int64_t *ff_copy_int64_list(const int64_t * const list);
+
+/* Functions to parse audio format arguments */
+
+/**
+ * Parse a pixel format.
+ *
+ * @param ret pixel format pointer to where the value should be written
+ * @param arg string to parse
+ * @param log_ctx log context
+ * @return 0 in case of success, a negative AVERROR code on error
+ */
+int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx);
-void ff_dlog_link(void *ctx, AVFilterLink *link, int end);
+/**
+ * Parse a sample rate.
+ *
+ * @param ret unsigned integer pointer to where the value should be written
+ * @param arg string to parse
+ * @param log_ctx log context
+ * @return 0 in case of success, a negative AVERROR code on error
+ */
+int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx);
+
+/**
+ * Parse a time base.
+ *
+ * @param ret unsigned AVRational pointer to where the value should be written
+ * @param arg string to parse
+ * @param log_ctx log context
+ * @return 0 in case of success, a negative AVERROR code on error
+ */
+int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx);
+
+/**
+ * Parse a sample format name or a corresponding integer representation.
+ *
+ * @param ret integer pointer to where the value should be written
+ * @param arg string to parse
+ * @param log_ctx log context
+ * @return 0 in case of success, a negative AVERROR code on error
+ */
+int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx);
+
+/**
+ * Parse a channel layout or a corresponding integer representation.
+ *
+ * @param ret 64bit integer pointer to where the value should be written.
+ * @param arg string to parse
+ * @param log_ctx log context
+ * @return 0 in case of success, a negative AVERROR code on error
+ */
+int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx);
+
+void ff_update_link_current_pts(AVFilterLink *link, int64_t pts);
+
+void ff_free_pool(AVFilterPool *pool);
+
+void ff_command_queue_pop(AVFilterContext *filter);
+
+/* misc trace functions */
+
+/* #define FF_AVFILTER_TRACE */
+
+#ifdef FF_AVFILTER_TRACE
+# define ff_tlog(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
+#else
+# define ff_tlog(pctx, ...) do { if (0) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)
+#endif
+
+#define FF_TPRINTF_START(ctx, func) ff_tlog(NULL, "%-16s: ", #func)
+
+char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms);
+
+void ff_tlog_ref(void *ctx, AVFilterBufferRef *ref, int end);
+
+void ff_tlog_link(void *ctx, AVFilterLink *link, int end);
/**
* Insert a new pad.
*/
int ff_request_frame(AVFilterLink *link);
+#define AVFILTER_DEFINE_CLASS(fname) \
+ static const AVClass fname##_class = { \
+ .class_name = #fname, \
+ .item_name = av_default_item_name, \
+ .option = fname##_options, \
+ .version = LIBAVUTIL_VERSION_INT, \
+ .category = AV_CLASS_CATEGORY_FILTER, \
+ }
+
+AVFilterBufferRef *ff_copy_buffer_ref(AVFilterLink *outlink,
+ AVFilterBufferRef *ref);
+
+/**
+ * Find the index of a link.
+ *
+ * I.e. find i such that link == ctx->(in|out)puts[i]
+ */
+#define FF_INLINK_IDX(link) ((int)((link)->dstpad - (link)->dst->input_pads))
+#define FF_OUTLINK_IDX(link) ((int)((link)->srcpad - (link)->src->output_pads))
+
#endif /* AVFILTER_INTERNAL_H */
projects / ffmpeg / blobdiff