00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00027 #include <unistd.h>
00028 #include <stdlib.h>
00029 #include "avutil.h"
00030 #include "log.h"
00031
00032 static int av_log_level = AV_LOG_INFO;
00033 static int flags;
00034
00035 #if defined(_WIN32) && !defined(__MINGW32CE__)
00036 #include <windows.h>
00037 static const uint8_t color[] = { 12, 12, 12, 14, 7, 7, 7 };
00038 static int16_t background, attr_orig;
00039 static HANDLE con;
00040 #define set_color(x) SetConsoleTextAttribute(con, background | color[x])
00041 #define reset_color() SetConsoleTextAttribute(con, attr_orig)
00042 #else
00043 static const uint8_t color[] = { 0x41, 0x41, 0x11, 0x03, 9, 9, 9 };
00044 #define set_color(x) fprintf(stderr, "\033[%d;3%dm", color[x] >> 4, color[x]&15)
00045 #define reset_color() fprintf(stderr, "\033[0m")
00046 #endif
00047 static int use_color = -1;
00048
00049 #undef fprintf
00050 static void colored_fputs(int level, const char *str)
00051 {
00052 if (use_color < 0) {
00053 #if defined(_WIN32) && !defined(__MINGW32CE__)
00054 CONSOLE_SCREEN_BUFFER_INFO con_info;
00055 con = GetStdHandle(STD_ERROR_HANDLE);
00056 use_color = (con != INVALID_HANDLE_VALUE) && !getenv("NO_COLOR") &&
00057 !getenv("AV_LOG_FORCE_NOCOLOR");
00058 if (use_color) {
00059 GetConsoleScreenBufferInfo(con, &con_info);
00060 attr_orig = con_info.wAttributes;
00061 background = attr_orig & 0xF0;
00062 }
00063 #elif HAVE_ISATTY
00064 use_color = !getenv("NO_COLOR") && !getenv("AV_LOG_FORCE_NOCOLOR") &&
00065 (getenv("TERM") && isatty(2) ||
00066 getenv("AV_LOG_FORCE_COLOR"));
00067 #else
00068 use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") &&
00069 !getenv("AV_LOG_FORCE_NOCOLOR");
00070 #endif
00071 }
00072
00073 if (use_color) {
00074 set_color(level);
00075 }
00076 fputs(str, stderr);
00077 if (use_color) {
00078 reset_color();
00079 }
00080 }
00081
00082 const char *av_default_item_name(void *ptr)
00083 {
00084 return (*(AVClass **) ptr)->class_name;
00085 }
00086
00087 static void sanitize(uint8_t *line){
00088 while(*line){
00089 if(*line < 0x08 || (*line > 0x0D && *line < 0x20))
00090 *line='?';
00091 line++;
00092 }
00093 }
00094
00095 void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl,
00096 char *line, int line_size, int *print_prefix)
00097 {
00098 AVClass* avc = ptr ? *(AVClass **) ptr : NULL;
00099 line[0] = 0;
00100 if (*print_prefix && avc) {
00101 if (avc->parent_log_context_offset) {
00102 AVClass** parent = *(AVClass ***) (((uint8_t *) ptr) +
00103 avc->parent_log_context_offset);
00104 if (parent && *parent) {
00105 snprintf(line, line_size, "[%s @ %p] ",
00106 (*parent)->item_name(parent), parent);
00107 }
00108 }
00109 snprintf(line + strlen(line), line_size - strlen(line), "[%s @ %p] ",
00110 avc->item_name(ptr), ptr);
00111 }
00112
00113 vsnprintf(line + strlen(line), line_size - strlen(line), fmt, vl);
00114
00115 *print_prefix = strlen(line) && line[strlen(line) - 1] == '\n';
00116 }
00117
00118 void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
00119 {
00120 static int print_prefix = 1;
00121 static int count;
00122 static char prev[1024];
00123 char line[1024];
00124 static int is_atty;
00125
00126 if (level > av_log_level)
00127 return;
00128 av_log_format_line(ptr, level, fmt, vl, line, sizeof(line), &print_prefix);
00129
00130 #if HAVE_ISATTY
00131 if (!is_atty)
00132 is_atty = isatty(2) ? 1 : -1;
00133 #endif
00134
00135 #undef fprintf
00136 if (print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev)){
00137 count++;
00138 if (is_atty == 1)
00139 fprintf(stderr, " Last message repeated %d times\r", count);
00140 return;
00141 }
00142 if (count > 0) {
00143 fprintf(stderr, " Last message repeated %d times\n", count);
00144 count = 0;
00145 }
00146 strcpy(prev, line);
00147 sanitize(line);
00148 colored_fputs(av_clip(level >> 3, 0, 6), line);
00149 }
00150
00151 static void (*av_log_callback)(void*, int, const char*, va_list) =
00152 av_log_default_callback;
00153
00154 void av_log(void* avcl, int level, const char *fmt, ...)
00155 {
00156 AVClass* avc = avcl ? *(AVClass **) avcl : NULL;
00157 va_list vl;
00158 va_start(vl, fmt);
00159 if (avc && avc->version >= (50 << 16 | 15 << 8 | 2) &&
00160 avc->log_level_offset_offset && level >= AV_LOG_FATAL)
00161 level += *(int *) (((uint8_t *) avcl) + avc->log_level_offset_offset);
00162 av_vlog(avcl, level, fmt, vl);
00163 va_end(vl);
00164 }
00165
00166 void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
00167 {
00168 av_log_callback(avcl, level, fmt, vl);
00169 }
00170
00171 int av_log_get_level(void)
00172 {
00173 return av_log_level;
00174 }
00175
00176 void av_log_set_level(int level)
00177 {
00178 av_log_level = level;
00179 }
00180
00181 void av_log_set_flags(int arg)
00182 {
00183 flags = arg;
00184 }
00185
00186 void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
00187 {
00188 av_log_callback = callback;
00189 }