Changeset 315 for libmpc/trunk/mpcdec/mpcdec.c

Timestamp:

05/10/07 00:01:35 (17 years ago)

Author:

r2d

Message:

Added -i flag to print file information

File:

• libmpc/trunk/mpcdec/mpcdec.c (modified) (6 diffs)

libmpc/trunk/mpcdec/mpcdec.c

@@ -37 +37 @@
 #include <mpc/mpcdec.h>
 #include <libwaveformat.h>
+#include <unistd.h>
 
 #ifdef WIN32
@@ -54 +55 @@
 }
 
+static void print_info(mpc_streaminfo * info, char * filename)
+{
+        int time = (int) mpc_streaminfo_get_length(info);
+        int minutes = time / 60;
+        int seconds = time % 60;
+
+        printf("file: %s\n", filename);
+        printf("stream version %d\n", info->stream_version);
+        printf("encoder: \%s\n", info->encoder);
+        printf("profile: \%s (q=%0.2f)\n", info->profile_name, info->profile - 5);
+        printf("PNS: \%s\n", info->pns == 0xFF ? "unknow" : info->pns ? "on" : "off");
+        printf("mid/side stereo: %s\n", info->ms ? "on" : "off");
+        printf("gapless: \%s\n", info->is_true_gapless ? "on" : "off");
+        printf("average bitrate: \%6.1f kbps\n", info->average_bitrate * 1.e-3);
+        printf("samplerate: \%d Hz\n", info->sample_freq);
+        printf("channels: \%d\n", info->channels);
+        printf("length: \%d:\%.2d (%u samples)\n", minutes, seconds, (mpc_uint32_t)mpc_streaminfo_get_length_samples(info));
+        printf("file size: \%d Bytes\n", info->total_file_length);
+        printf("track peak: \%2.2f dB\n", info->peak_title / 256.);
+        printf("track gain: \%2.2f dB\n", info->gain_title / 256.);
+        printf("album peak: \%2.2f dB\n", info->peak_album / 256.);
+        printf("album gain: \%2.2f dB\n", info->gain_album / 256.);
+        printf("\n");
+
+}
+
 static void
 usage(const char *exename)
 {
-    printf("Usage: %s <infile.mpc> [<outfile.wav>]\n", exename);
+    printf("Usage: %s [-i] [-h] <infile.mpc> [<outfile.wav>]\n"
+                        "-i : print file information on stdout\n"
+                        "-h : print this help\n", exename);
 }
 
@@ -67 +96 @@
         mpc_streaminfo si;
         mpc_status err;
+        mpc_bool_t info = MPC_FALSE;
     MPC_SAMPLE_FORMAT sample_buffer[MPC_DECODER_BUFFER_LENGTH];
     clock_t begin, end, sum; int total_samples; t_wav_output_file wav_output;
-    mpc_bool_t is_wav_output;
+        mpc_bool_t is_wav_output;
+        int c;
+        extern char * optarg;
+        extern int optind;
 
     printf("mpcdec - musepack (mpc) decoder sample application\n");
-    if(3 < argc && argc < 2)
+
+        while ((c = getopt(argc , argv, "ih")) != -1) {
+                switch (c) {
+                        case 'i':
+                                info = MPC_TRUE;
+                                break;
+                        case 'h':
+                                usage(argv[0]);
+                                return 0;
+                }
+        }
+
+        if(2 < argc - optind && argc - optind < 1)
     {
         usage(argv[0]);
@@ -78 +123 @@
     }
 
-    err = mpc_reader_init_stdio(&reader, argv[1]);
+        err = mpc_reader_init_stdio(&reader, argv[optind]);
     if(err < 0) return !MPC_STATUS_OK;
 
@@ -85 +130 @@
     mpc_demux_get_info(demux,  &si);
 
-    is_wav_output = argc > 2;
+        if (info == MPC_TRUE) {
+                print_info(&si, argv[optind]);
+                mpc_demux_exit(demux);
+                mpc_reader_exit_stdio(&reader);
+                return 0;
+        }
+
+        is_wav_output = argc - optind > 1;
     if(is_wav_output)
     {
@@ -92 +144 @@
         wavo_fc.m_seek      = mpc_wav_output_seek;
         wavo_fc.m_write     = mpc_wav_output_write;
-        wavo_fc.m_user_data = fopen(argv[2], "wb");
+                wavo_fc.m_user_data = fopen(argv[optind + 1], "wb");
         if(!wavo_fc.m_user_data) return !MPC_STATUS_OK;
         err = waveformat_output_open(&wav_output, wavo_fc, si.channels, 16, 0, si.sample_freq, (t_wav_uint32) si.samples * 2);