* Various utilities for command line tools
* copyright (c) 2003 Fabrice Bellard
*
- * 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
*/
-#ifndef LIBAV_CMDUTILS_H
-#define LIBAV_CMDUTILS_H
+#ifndef FFMPEG_CMDUTILS_H
+#define FFMPEG_CMDUTILS_H
#include <stdint.h>
#include "libavformat/avformat.h"
#include "libswscale/swscale.h"
+#ifdef __MINGW32__
+#undef main /* We don't want SDL to override our main() */
+#endif
+
/**
* program name, defined by the program for show_version().
*/
/**
* Trivial log callback.
- * Only suitable for show_help and similar since it lacks prefix handling.
+ * Only suitable for opt_help and similar since it lacks prefix handling.
*/
void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
*/
int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration);
+typedef struct SpecifierOpt {
+ char *specifier; /**< stream/chapter/program/... specifier */
+ union {
+ uint8_t *str;
+ int i;
+ int64_t i64;
+ float f;
+ double dbl;
+ } u;
+} SpecifierOpt;
+
typedef struct {
const char *name;
int flags;
#define OPT_INT64 0x0400
#define OPT_EXIT 0x0800
#define OPT_DATA 0x1000
+#define OPT_FUNC2 0x2000
+#define OPT_OFFSET 0x4000 /* option is specified as an offset in a passed optctx */
+#define OPT_SPEC 0x8000 /* option is to be stored in an array of SpecifierOpt.
+ Implies OPT_OFFSET. Next element after the offset is
+ an int containing element count in the array. */
+#define OPT_TIME 0x10000
+#define OPT_DOUBLE 0x20000
union {
- int *int_arg;
- char **str_arg;
- float *float_arg;
+ void *dst_ptr;
int (*func_arg)(const char *, const char *);
- int64_t *int64_arg;
+ int (*func2_arg)(void *, const char *, const char *);
+ size_t off;
} u;
const char *help;
const char *argname;
/**
* Parse the command line arguments.
+ *
+ * @param optctx an opaque options context
* @param options Array with the definitions required to interpret every
* option of the form: -option_name [argument]
* @param parse_arg_function Name of the function called to process every
* argument without a leading option name flag. NULL if such arguments do
* not have to be processed.
*/
-void parse_options(int argc, char **argv, const OptionDef *options,
- void (* parse_arg_function)(const char*));
+void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
+ void (* parse_arg_function)(void *optctx, const char*));
+
+/**
+ * Parse one given option.
+ *
+ * @return on success 1 if arg was consumed, 0 otherwise; negative number on error
+ */
+int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options);
/**
* Check if the given stream matches a stream specifier.
* Print the version of the program to stdout. The version message
* depends on the current versions of the repository and of the libav*
* libraries.
+ * This option processing function does not utilize the arguments.
*/
-void show_version(void);
+int opt_version(const char *opt, const char *arg);
/**
* Print the license of the program to stdout. The license depends on
* the license of the libraries compiled into the program.
+ * This option processing function does not utilize the arguments.
*/
-void show_license(void);
+int opt_license(const char *opt, const char *arg);
/**
* Print a listing containing all the formats supported by the
* program.
+ * This option processing function does not utilize the arguments.
*/
-void show_formats(void);
+int opt_formats(const char *opt, const char *arg);
/**
* Print a listing containing all the codecs supported by the
* program.
+ * This option processing function does not utilize the arguments.
*/
-void show_codecs(void);
+int opt_codecs(const char *opt, const char *arg);
/**
* Print a listing containing all the filters supported by the
* program.
+ * This option processing function does not utilize the arguments.
*/
-void show_filters(void);
+int opt_filters(const char *opt, const char *arg);
/**
* Print a listing containing all the bit stream filters supported by the
* program.
+ * This option processing function does not utilize the arguments.
*/
-void show_bsfs(void);
+int opt_bsfs(const char *opt, const char *arg);
/**
* Print a listing containing all the protocols supported by the
* program.
+ * This option processing function does not utilize the arguments.
*/
-void show_protocols(void);
+int opt_protocols(const char *opt, const char *arg);
/**
* Print a listing containing all the pixel formats supported by the
* program.
+ * This option processing function does not utilize the arguments.
*/
-void show_pix_fmts(void);
+int opt_pix_fmts(const char *opt, const char *arg);
/**
* Return a positive value if a line read from standard input
*/
int read_file(const char *filename, char **bufptr, size_t *size);
-typedef struct {
- int64_t num_faulty_pts; /// Number of incorrect PTS values so far
- int64_t num_faulty_dts; /// Number of incorrect DTS values so far
- int64_t last_pts; /// PTS of the last frame
- int64_t last_dts; /// DTS of the last frame
-} PtsCorrectionContext;
-
-/**
- * Reset the state of the PtsCorrectionContext.
- */
-void init_pts_correction(PtsCorrectionContext *ctx);
-
-/**
- * Attempt to guess proper monotonic timestamps for decoded video frames
- * which might have incorrect times. Input timestamps may wrap around, in
- * which case the output will as well.
- *
- * @param pts the pts field of the decoded AVPacket, as passed through
- * AVCodecContext.reordered_opaque
- * @param dts the dts field of the decoded AVPacket
- * @return one of the input values, may be AV_NOPTS_VALUE
- */
-int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t pts, int64_t dts);
-
/**
* Get a file corresponding to a preset file.
*
* If is_path is non-zero, look for the file in the path preset_name.
* Otherwise search for a file named arg.ffpreset in the directories
* $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
- * at configuration time, in that order. If no such file is found and
+ * at configuration time or in a "ffpresets" folder along the executable
+ * on win32, in that order. If no such file is found and
* codec_name is defined, then search for a file named
* codec_name-preset_name.ffpreset in the above-mentioned directories.
*
FILE *get_preset_file(char *filename, size_t filename_size,
const char *preset_name, int is_path, const char *codec_name);
-typedef struct {
- enum PixelFormat pix_fmt;
-} FFSinkContext;
-
-extern AVFilter ffsink;
+/**
+ * Do all the necessary cleanup and abort.
+ * This function is implemented in the avtools, not cmdutils.
+ */
+void exit_program(int ret);
/**
- * Extract a frame from sink.
+ * Realloc array to hold new_size elements of elem_size.
+ * Calls exit_program() on failure.
*
- * @return a negative error in case of failure, 1 if one frame has
- * been extracted successfully.
+ * @param elem_size size in bytes of each element
+ * @param size new element count will be written here
+ * @return reallocated array
*/
-int get_filtered_video_frame(AVFilterContext *sink, AVFrame *frame,
- AVFilterBufferRef **picref, AVRational *pts_tb);
+void *grow_array(void *array, int elem_size, int *size, int new_size);
#endif /* LIBAV_CMDUTILS_H */
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