1 files changed, 112 insertions, 4 deletions
diff --git a/libavfilter/internal.h b/libavfilter/internal.h
index 4b53831..c208edf 100644
--- a/libavfilter/internal.h
+++ b/libavfilter/internal.h
@@ -1,18 +1,18 @@
 /*
- * 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
  */
 
@@ -25,6 +25,29 @@
  */
 
 #include "avfilter.h"
+#include "avfiltergraph.h"
+#include "formats.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);
 
 /** default handler for freeing audio/video buffer when there are no references left */
 void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);
@@ -32,8 +55,93 @@ void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);
 /** Tell is a format is contained in the provided list terminated by -1. */
 int ff_fmt_is_in(int fmt, const int *fmts);
 
+/**
+ * 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);
+
+/**
+ * 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);
+
+/**
+ * Pass video frame along and keep an internal reference for later use.
+ */
+static inline void ff_null_start_frame_keep_ref(AVFilterLink *inlink,
+                                                AVFilterBufferRef *picref)
+{
+    avfilter_start_frame(inlink->dst->outputs[0], avfilter_ref_buffer(picref, ~0));
+}
+
+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 debug functions */
+
 #define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
 
+char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms);
+
+void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end);
+
 void ff_dlog_link(void *ctx, AVFilterLink *link, int end);
 
 /**