Libav 0.7.1
cmdutils.h
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00001 /*
00002  * Various utilities for command line tools
00003  * copyright (c) 2003 Fabrice Bellard
00004  *
00005  * This file is part of Libav.
00006  *
00007  * Libav is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * Libav is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with Libav; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef LIBAV_CMDUTILS_H
00023 #define LIBAV_CMDUTILS_H
00024 
00025 #include <stdint.h>
00026 
00027 #include "libavcodec/avcodec.h"
00028 #include "libavfilter/avfilter.h"
00029 #include "libavformat/avformat.h"
00030 #include "libswscale/swscale.h"
00031 
00035 extern const char program_name[];
00036 
00040 extern const int program_birth_year;
00041 
00042 extern const char **opt_names;
00043 extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
00044 extern AVFormatContext *avformat_opts;
00045 extern struct SwsContext *sws_opts;
00046 extern AVDictionary *format_opts, *video_opts, *audio_opts, *sub_opts;
00047 
00052 void init_opts(void);
00057 void uninit_opts(void);
00058 
00063 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
00064 
00069 int opt_default(const char *opt, const char *arg);
00070 
00074 int opt_loglevel(const char *opt, const char *arg);
00075 
00079 int opt_timelimit(const char *opt, const char *arg);
00080 
00094 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max);
00095 
00110 int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration);
00111 
00112 typedef struct {
00113     const char *name;
00114     int flags;
00115 #define HAS_ARG    0x0001
00116 #define OPT_BOOL   0x0002
00117 #define OPT_EXPERT 0x0004
00118 #define OPT_STRING 0x0008
00119 #define OPT_VIDEO  0x0010
00120 #define OPT_AUDIO  0x0020
00121 #define OPT_GRAB   0x0040
00122 #define OPT_INT    0x0080
00123 #define OPT_FLOAT  0x0100
00124 #define OPT_SUBTITLE 0x0200
00125 #define OPT_INT64  0x0400
00126 #define OPT_EXIT   0x0800
00127 #define OPT_DATA   0x1000
00128      union {
00129         int *int_arg;
00130         char **str_arg;
00131         float *float_arg;
00132         int (*func_arg)(const char *, const char *);
00133         int64_t *int64_arg;
00134     } u;
00135     const char *help;
00136     const char *argname;
00137 } OptionDef;
00138 
00139 void show_help_options(const OptionDef *options, const char *msg, int mask, int value);
00140 
00149 void parse_options(int argc, char **argv, const OptionDef *options,
00150                    void (* parse_arg_function)(const char*));
00151 
00152 void set_context_opts(void *ctx, void *opts_ctx, int flags, AVCodec *codec);
00153 
00163 void print_error(const char *filename, int err);
00164 
00170 void show_banner(void);
00171 
00177 void show_version(void);
00178 
00183 void show_license(void);
00184 
00189 void show_formats(void);
00190 
00195 void show_codecs(void);
00196 
00201 void show_filters(void);
00202 
00207 void show_bsfs(void);
00208 
00213 void show_protocols(void);
00214 
00219 void show_pix_fmts(void);
00220 
00225 int read_yesno(void);
00226 
00236 int read_file(const char *filename, char **bufptr, size_t *size);
00237 
00238 typedef struct {
00239     int64_t num_faulty_pts; 
00240     int64_t num_faulty_dts; 
00241     int64_t last_pts;       
00242     int64_t last_dts;       
00243 } PtsCorrectionContext;
00244 
00248 void init_pts_correction(PtsCorrectionContext *ctx);
00249 
00260 int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t pts, int64_t dts);
00261 
00279 FILE *get_preset_file(char *filename, size_t filename_size,
00280                       const char *preset_name, int is_path, const char *codec_name);
00281 
00282 typedef struct {
00283     enum PixelFormat pix_fmt;
00284 } FFSinkContext;
00285 
00286 extern AVFilter ffsink;
00287 
00294 int get_filtered_video_frame(AVFilterContext *sink, AVFrame *frame,
00295                              AVFilterBufferRef **picref, AVRational *pts_tb);
00296 
00297 #endif /* LIBAV_CMDUTILS_H */