adding ffmpeg specific version

1 files changed, 328 insertions, 0 deletions

diff --git a/ffmpeg1/libavfilter/internal.h b/ffmpeg1/libavfilter/internal.h
new file mode 100644
index 0000000..9a42ae0
--- /dev/null
+++ b/ffmpeg1/libavfilter/internal.h
@@ -0,0 +1,328 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVFILTER_INTERNAL_H
+#define AVFILTER_INTERNAL_H
+
+/**
+ * @file
+ * internal API functions
+ */
+
+#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
+/**
+ * A filter pad used for either input or output.
+ */
+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;
+
+    /**
+     * 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);
+
+    /**
+     * 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 samplesref 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.
+     *
+     * Output pads only.
+     */
+    int (*request_frame)(AVFilterLink *link);
+
+    /**
+     * Link configuration callback.
+     *
+     * For output pads, this should set the link properties such as
+     * width/height. This should NOT set the format property - that is
+     * 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 filters, 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;
+};
+#endif
+
+/** default handler for freeing audio/video buffer when there are no references left */
+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 AVPixelFormat *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);
+
+void ff_update_link_current_pts(AVFilterLink *link, int64_t pts);
+
+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, AVFrame *ref, int end);
+
+void ff_tlog_link(void *ctx, AVFilterLink *link, int end);
+
+/**
+ * Insert a new pad.
+ *
+ * @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.
+ */
+void ff_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 ff_insert_inpad(AVFilterContext *f, unsigned index,
+                                   AVFilterPad *p)
+{
+    ff_insert_pad(index, &f->nb_inputs, offsetof(AVFilterLink, dstpad),
+                  &f->input_pads, &f->inputs, p);
+#if FF_API_FOO_COUNT
+    f->input_count = f->nb_inputs;
+#endif
+}
+
+/** Insert a new output pad for the filter. */
+static inline void ff_insert_outpad(AVFilterContext *f, unsigned index,
+                                    AVFilterPad *p)
+{
+    ff_insert_pad(index, &f->nb_outputs, offsetof(AVFilterLink, srcpad),
+                  &f->output_pads, &f->outputs, p);
+#if FF_API_FOO_COUNT
+    f->output_count = f->nb_outputs;
+#endif
+}
+
+/**
+ * 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 ff_poll_frame(AVFilterLink *link);
+
+/**
+ * Request an input frame from the filter at the other end of the link.
+ *
+ * @param link the input link
+ * @return     zero on success
+ */
+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))
+
+int ff_buffersink_read_compat(AVFilterContext *ctx, AVFilterBufferRef **buf);
+int ff_buffersink_read_samples_compat(AVFilterContext *ctx, AVFilterBufferRef **pbuf,
+                                      int nb_samples);
+/**
+ * Send a frame of data to the next filter.
+ *
+ * @param link   the output link over which the data is being sent
+ * @param frame a reference to the buffer of data being sent. The
+ *              receiving filter will free this reference when it no longer
+ *              needs it or pass it on to the next filter.
+ *
+ * @return >= 0 on success, a negative AVERROR on error. The receiving filter
+ * is responsible for unreferencing frame in case of error.
+ */
+int ff_filter_frame(AVFilterLink *link, AVFrame *frame);
+
+#endif /* AVFILTER_INTERNAL_H */