Changeset 480

Timestamp:

03/31/12 00:52:54 (13 years ago)

Author:

r2d

Message:

add raw output to mpcdec, not really tested

File:

• libmpc/trunk/mpcdec/mpcdec.c (modified) (8 diffs)

libmpc/trunk/mpcdec/mpcdec.c

@@ -40 +40 @@
 #include <libwaveformat.h>
 #include <getopt.h>
+#include <math.h>
+#include <byteswap.h>
 
 #ifdef _MSC_VER
@@ -75 +77 @@
     return (t_wav_uint32) !fseek(p_handle, p_position, SEEK_SET);
 }
+
+#ifdef MPC_FIXED_POINT
+
+static int raw_output_int16(FILE * file, short * buff, int cnt, mpc_bool_t reverse_endian)
+{
+        int i;
+        for (i = 0; i < cnt; i++) {
+                short out = buff[i];
+                if (reverse_endian)
+                        out = bswap_16(out);
+                if (fwrite(&out, sizeof(out), 1, file) != 1)
+                        return -1;
+        }
+        return 0;
+}
+
+#else
+
+static int raw_output_float32(FILE * file, float * buff, int cnt, mpc_bool_t reverse_endian)
+{
+        int i;
+        for (i = 0; i < cnt; i++) {
+                int tmp = nearbyintf(buff[i] * (1 << 15));
+                short out;
+                if (tmp > ((1 << 15) - 1))
+                        tmp = ((1 << 15) - 1);
+                if (tmp < -(1 << 15))
+                        tmp = -(1 << 15);
+                if (reverse_endian)
+                        tmp = bswap_16((short) tmp);
+                out = (short)tmp;
+                if (fwrite(&out, sizeof(out), 1, file) != 1)
+                        return -1;
+        }
+        return 0;
+}
+
+#endif
 
 static void print_info(mpc_streaminfo * info, char * filename)
@@ -109 +149 @@
                         "-c : check the file for stream errors\n"
                         "     (doesn't fully decode, outfile will be ignored)\n"
+                        "-r : output raw data (left/right) in machine native endian\n"
+                        "-e : reverse raw data endianness\n"
                         "-h : print this help\n"
             "you can use stdin and stdout as resp. <infile.mpc> and\n"
@@ -122 +164 @@
         mpc_status err;
         mpc_bool_t info = MPC_FALSE, is_wav_output = MPC_FALSE, check = MPC_FALSE;
+        mpc_bool_t is_raw_output = MPC_FALSE, reverse_endian = 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;
+    clock_t begin, end, sum; int total_samples;
+        t_wav_output_file wav_output;
+        t_wav_output_file_callback wavo_fc;
         int c;
 
     fprintf(stderr, About);
 
-        while ((c = getopt(argc , argv, "ihc")) != -1) {
+        while ((c = getopt(argc , argv, "ihcre")) != -1) {
                 switch (c) {
                         case 'i':
@@ -136 +181 @@
                                 check = MPC_TRUE;
                                 break;
+                        case 'r':
+                                is_raw_output = MPC_TRUE;
+                                break;
+                        case 'e':
+                                reverse_endian = MPC_TRUE;
+                                break;
                         case 'h':
                                 usage(argv[0]);
@@ -166 +217 @@
         }
 
-        if (!check)
-                is_wav_output = argc - optind > 1;
-    if(is_wav_output)
+        if (check) {
+                is_raw_output = MPC_FALSE;
+        } else if (argc - optind > 1 && is_raw_output == MPC_FALSE) {
+                is_wav_output = MPC_TRUE;
+        };
+        
+    if (is_wav_output || is_raw_output)
     {
-        t_wav_output_file_callback wavo_fc;
         memset(&wav_output, 0, sizeof wav_output);
         wavo_fc.m_seek      = mpc_wav_output_seek;
         wavo_fc.m_write     = mpc_wav_output_write;
-                if (strcmp(argv[optind + 1], "-") == 0) {
+                if (strcmp(argv[optind + 1], "-") == 0 || (is_raw_output && argc - optind <= 1)) {
                         SET_BINARY_MODE(stdout);
                     wavo_fc.m_user_data = stdout;
                 } else
                         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 * si.channels);
-        if(!err) return !MPC_STATUS_OK;
+        if(!wavo_fc.m_user_data)
+                        return !MPC_STATUS_OK;
+                
+                if (is_wav_output) {
+                        if (!waveformat_output_open(&wav_output, wavo_fc, si.channels, 16, 0, si.sample_freq, (t_wav_uint32) si.samples * si.channels))
+                                return !MPC_STATUS_OK;
+                }
     }
 
@@ -200 +258 @@
         sum           += end - begin;
 
-                if(is_wav_output) {
+                if (is_wav_output || is_raw_output) {
 #ifdef MPC_FIXED_POINT
                         mpc_int16_t tmp_buff[MPC_DECODER_BUFFER_LENGTH];
@@ -210 +268 @@
                                 tmp_buff[i] = tmp;
                         }
-                        if(waveformat_output_process_int16(&wav_output, tmp_buff, frame.samples * si.channels) < 0)
+#endif
+                        if (is_wav_output) {
+#ifdef MPC_FIXED_POINT
+                                if(waveformat_output_process_int16(&wav_output, tmp_buff, frame.samples * si.channels) < 0)
 #else
-                        if(waveformat_output_process_float32(&wav_output, sample_buffer, frame.samples * si.channels) < 0)
-#endif
-                break;
+                                if(waveformat_output_process_float32(&wav_output, sample_buffer, frame.samples * si.channels) < 0)
+#endif
+                                        break;
+                        }
+                        if (is_raw_output) {
+#ifdef MPC_FIXED_POINT
+                                if (raw_output_int16(wavo_fc.m_user_data, tmp_buff, frame.samples * si.channels, reverse_endian) < 0)
+#else
+                                if (raw_output_float32(wavo_fc.m_user_data, sample_buffer, frame.samples * si.channels, reverse_endian) < 0)
+#endif
+                                        break;
+                        }
                 }
     }