| /* |
| * 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" |
| |
| #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; |
| |
| /** |
| * Check for the validity of graph. |
| * |
| * A graph is considered valid if all its input and output pads are |
| * connected. |
| * |
| * @return 0 in case of success, a negative value otherwise |
| */ |
| int ff_avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx); |
| |
| /** |
| * Configure all the links of graphctx. |
| * |
| * @return 0 in case of success, a negative value otherwise |
| */ |
| int ff_avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx); |
| |
| /** |
| * Configure the formats of all the links in the graph. |
| */ |
| int ff_avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx); |
| |
| /** |
| * 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); |
| |
| /** 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); |
| |
| #define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func) |
| |
| void ff_dlog_link(void *ctx, AVFilterLink *link, int end); |
| |
| #endif /* AVFILTER_INTERNAL_H */ |