用vs调试ffmpeg.exe的源代码

/* * FFmpeg main * Copyright (c) 2000-2003 Fabrice Bellard * * 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 */ /* needed for usleep() */ #define _XOPEN_SOURCE 600 #include "config.h" #include <ctype.h> #include <string.h> #include <math.h> #include <stdlib.h> #include <errno.h> #include <signal.h> #include <limits.h> #include <unistd.h> #include "libavformat/avformat.h" #include "libavdevice/avdevice.h" #include "libswscale/swscale.h" #include "libavcodec/opt.h" #include "libavcodec/audioconvert.h" #include "libavcodec/colorspace.h" #include "libavutil/fifo.h" #include "libavutil/pixdesc.h" #include "libavutil/avstring.h" #include "libavformat/os_support.h" #if HAVE_SYS_RESOURCE_H #include <sys/types.h> #include <sys/resource.h> #elif HAVE_GETPROCESSTIMES #include <windows.h> #endif #if HAVE_SYS_SELECT_H #include <sys/select.h> #endif #if HAVE_TERMIOS_H #include <fcntl.h> #include <sys/ioctl.h> #include <sys/time.h> #include <termios.h> #elif HAVE_CONIO_H #include <conio.h> #endif #undef time //needed because HAVE_AV_CONFIG_H is defined on top #include <time.h> #include "cmdutils.h" #undef NDEBUG #include <assert.h> #undef exit const char program_name[] = "FFmpeg"; const int program_birth_year = 2000; /* select an input stream for an output stream */ typedef struct AVStreamMap { int file_index; int stream_index; int sync_file_index; int sync_stream_index; } AVStreamMap; /** select an input file for an output file */ typedef struct AVMetaDataMap { int out_file; int in_file; } AVMetaDataMap; const OptionDef options[]; #define MAX_FILES 100 static const char *last_asked_format = NULL; static AVFormatContext *input_files[MAX_FILES]; static int64_t input_files_ts_offset[MAX_FILES]; static double input_files_ts_scale[MAX_FILES][MAX_STREAMS]; static AVCodec *input_codecs[MAX_FILES*MAX_STREAMS]; static int nb_input_files = 0; static int nb_icodecs; static AVFormatContext *output_files[MAX_FILES]; static AVCodec *output_codecs[MAX_FILES*MAX_STREAMS]; static int nb_output_files = 0; static int nb_ocodecs; static AVStreamMap stream_maps[MAX_FILES*MAX_STREAMS]; static int nb_stream_maps; static AVMetaDataMap meta_data_maps[MAX_FILES]; static int nb_meta_data_maps; static int frame_width = 0; static int frame_height = 0; static float frame_aspect_ratio = 0; static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE; static enum SampleFormat audio_sample_fmt = SAMPLE_FMT_NONE; static int frame_padtop = 0; static int frame_padbottom = 0; static int frame_padleft = 0; static int frame_padright = 0; static int padcolor[3] = {16,128,128}; /* default to black */ static int frame_topBand = 0; static int frame_bottomBand = 0; static int frame_leftBand = 0; static int frame_rightBand = 0; static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX}; static AVRational frame_rate; static float video_qscale = 0; static uint16_t *intra_matrix = NULL; static uint16_t *inter_matrix = NULL; static const char *video_rc_override_string=NULL; static int video_disable = 0; static int video_discard = 0; static char *video_codec_name = NULL; static int video_codec_tag = 0; static char *video_language = NULL; static int same_quality = 0; static int do_deinterlace = 0; static int top_field_first = -1; static int me_threshold = 0; static int intra_dc_precision = 8; static int loop_input = 0; static int loop_output = AVFMT_NOOUTPUTLOOP; static int qp_hist = 0; static int intra_only = 0; static int audio_sample_rate = 44100; static int64_t channel_layout = 0; #define QSCALE_NONE -99999 static float audio_qscale = QSCALE_NONE; static int audio_disable = 0; static int audio_channels = 1; static char *audio_codec_name = NULL; static int audio_codec_tag = 0; static char *audio_language = NULL; static int subtitle_disable = 0; static char *subtitle_codec_name = NULL; static char *subtitle_language = NULL; static int subtitle_codec_tag = 0; static float mux_preload= 0.5; static float mux_max_delay= 0.7; static int64_t recording_time = INT64_MAX; static int64_t start_time = 0; static int64_t rec_timestamp = 0; static int64_t input_ts_offset = 0; static int file_overwrite = 0; static int metadata_count; static AVMetadataTag *metadata; static int do_benchmark = 0; static int do_hex_dump = 0; static int do_pkt_dump = 0; static int do_psnr = 0; static int do_pass = 0; static char *pass_logfilename_prefix = NULL; static int audio_stream_copy = 0; static int video_stream_copy = 0; static int subtitle_stream_copy = 0; static int video_sync_method= -1; static int audio_sync_method= 0; static float audio_drift_threshold= 0.1; static int copy_ts= 0; static int opt_shortest = 0; static int video_global_header = 0; static char *vstats_filename; static FILE *vstats_file; static int opt_programid = 0; static int copy_initial_nonkeyframes = 0; static int rate_emu = 0; static int video_channel = 0; static char *video_standard; static int audio_volume = 256; static int exit_on_error = 0; static int using_stdin = 0; static int verbose = 1; static int thread_count= 1; static int q_pressed = 0; static int64_t video_size = 0; static int64_t audio_size = 0; static int64_t extra_size = 0; static int nb_frames_dup = 0; static int nb_frames_drop = 0; static int input_sync; static uint64_t limit_filesize = 0; static int force_fps = 0; static int pgmyuv_compatibility_hack=0; static float dts_delta_threshold = 10; static unsigned int sws_flags = SWS_BICUBIC; static int64_t timer_start; static uint8_t *audio_buf; static uint8_t *audio_out; unsigned int allocated_audio_out_size, allocated_audio_buf_size; static short *samples; static AVBitStreamFilterContext *video_bitstream_filters=NULL; static AVBitStreamFilterContext *audio_bitstream_filters=NULL; static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL; static AVBitStreamFilterContext *bitstream_filters[MAX_FILES][MAX_STREAMS]; #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass" struct AVInputStream; typedef struct AVOutputStream { int file_index; /* file index */ int index; /* stream index in the output file */ int source_index; /* AVInputStream index */ AVStream *st; /* stream in the output file */ int encoding_needed; /* true if encoding needed for this stream */ int frame_number; /* input pts and corresponding output pts for A/V sync */ //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */ struct AVInputStream *sync_ist; /* input stream to sync against */ int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number /* video only */ int video_resample; AVFrame pict_tmp; /* temporary image for resampling */ struct SwsContext *img_resample_ctx; /* for image resampling */ int resample_height; int resample_width; int resample_pix_fmt; /* full frame size of first frame */ int original_height; int original_width; /* cropping area sizes */ int video_crop; int topBand; int bottomBand; int leftBand; int rightBand; /* cropping area of first frame */ int original_topBand; int original_bottomBand; int original_leftBand; int original_righ