Import madplay_0.15.2b.orig.tar.gz

[dgit import orig madplay_0.15.2b.orig.tar.gz]

1 files changed, 307 insertions, 0 deletions

diff --git a/audio_wave.c b/audio_wave.c
new file mode 100644
index 0000000..0c6e076
--- /dev/null
+++ b/audio_wave.c
@@ -0,0 +1,307 @@
+/*
+ * madplay - MPEG audio decoder and player
+ * Copyright (C) 2000-2004 Robert Leslie
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: audio_wave.c,v 1.18 2004/01/23 09:41:31 rob Exp $
+ */
+
+# ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# include <stdio.h>
+# include <string.h>
+# include <mad.h>
+
+# include "audio.h"
+
+static FILE *outfile;
+static audio_pcmfunc_t *audio_pcm;
+
+static unsigned long riff_len, data_len;
+static long data_chunk;
+
+static unsigned int config_channels;
+static unsigned int config_speed;
+static unsigned int config_precision;
+
+# define WAVE_FORMAT_PCM	0x0001
+# define UNKNOWN_LENGTH		"\xff\xff\xff\xff"
+
+static
+int init(struct audio_init *init)
+{
+  if (init->path && strcmp(init->path, "-") != 0) {
+    outfile = fopen(init->path, "wb");
+    if (outfile == 0) {
+      audio_error = ":";
+      return -1;
+    }
+  }
+  else
+    outfile = stdout;
+
+  /* RIFF header and (WAVE) data type identifier */
+
+  if (fwrite("RIFF" UNKNOWN_LENGTH "WAVE", 4 + 4 + 4, 1, outfile) != 1) {
+    audio_error = ":fwrite";
+    return -1;
+  }
+
+  riff_len   =  4;
+  data_chunk = -1;
+
+  config_channels  = 0;
+  config_speed     = 0;
+  config_precision = 0;
+
+  return 0;
+}
+
+/*
+ * NAME:	int32()
+ * DESCRIPTION:	store 32-bit little-endian integer
+ */
+static
+void int32(unsigned char *ptr, unsigned long num)
+{
+  ptr[0] = num >>  0;
+  ptr[1] = num >>  8;
+  ptr[2] = num >> 16;
+  ptr[3] = num >> 24;
+}
+
+/*
+ * NAME:	int16()
+ * DESCRIPTION:	store 16-bit little-endian integer
+ */
+static
+void int16(unsigned char *ptr, unsigned int num)
+{
+  ptr[0] = num >> 0;
+  ptr[1] = num >> 8;
+}
+
+static
+int config(struct audio_config *config)
+{
+  unsigned char chunk[8 + 16];
+  unsigned int block_al, bitdepth;
+  unsigned long bytes_ps;
+
+  if (config_precision) {
+    /* it's not possible to change the format once set */
+
+    config->channels  = config_channels;
+    config->speed     = config_speed;
+    config->precision = config_precision;
+
+    return 0;
+  }
+
+  bitdepth = config->precision;
+  if (bitdepth == 0)
+    bitdepth = 16;
+  else if (bitdepth > 32)
+    bitdepth = 32;
+
+  /* Format chunk */
+
+  block_al = config->channels * ((bitdepth + 7) / 8);
+  bytes_ps = config->speed * block_al;
+
+  memcpy(&chunk[0], "fmt ", 4);		/* chunkID */
+  int32(&chunk[4],  16);		/* chunkSize */
+
+  int16(&chunk[8],  WAVE_FORMAT_PCM);	/* wFormatTag */
+  int16(&chunk[10], config->channels);	/* wChannels */
+  int32(&chunk[12], config->speed);	/* dwSamplesPerSec */
+  int32(&chunk[16], bytes_ps);		/* dwAvgBytesPerSec */
+  int16(&chunk[20], block_al);		/* wBlockAlign */
+
+  /* PCM-format-specific */
+
+  int16(&chunk[22], bitdepth);		/* wBitsPerSample */
+
+  if (fwrite(chunk, 8 + 16, 1, outfile) != 1) {
+    audio_error = ":fwrite";
+    return -1;
+  }
+
+  riff_len += 8 + 16;
+
+  /* Data chunk */
+
+  data_chunk = ftell(outfile);
+
+  if (fwrite("data" UNKNOWN_LENGTH, 8 + 0, 1, outfile) != 1) {
+    audio_error = ":fwrite";
+    return -1;
+  }
+
+  riff_len += 8 + 0;
+  data_len  = 0;
+
+  switch (config->precision = bitdepth) {
+  case 1: case 2: case 3: case 4:
+  case 5: case 6: case 7: case 8:
+    audio_pcm = audio_pcm_u8;
+    break;
+
+  case  9: case 10: case 11: case 12:
+  case 13: case 14: case 15: case 16:
+    audio_pcm = audio_pcm_s16le;
+    break;
+
+  case 17: case 18: case 19: case 20:
+  case 21: case 22: case 23: case 24:
+    audio_pcm = audio_pcm_s24le;
+    break;
+
+  case 25: case 26: case 27: case 28:
+  case 29: case 30: case 31: case 32:
+    audio_pcm = audio_pcm_s32le;
+    break;
+  }
+
+  config_channels  = config->channels;
+  config_speed     = config->speed;
+  config_precision = config->precision;
+
+  return 0;
+}
+
+static
+int play(struct audio_play *play)
+{
+  unsigned char data[MAX_NSAMPLES * 4 * 2];
+  unsigned int len;
+
+  len = audio_pcm(data, play->nsamples, play->samples[0], play->samples[1],
+		  play->mode, play->stats);
+
+  if (fwrite(data, len, 1, outfile) != 1) {
+    audio_error = ":fwrite";
+    return -1;
+  }
+
+  data_len += len;
+  riff_len += len;
+
+  return 0;
+}
+
+static
+int stop(struct audio_stop *stop)
+{
+  return 0;
+}
+
+static
+int patch_int32(long address, unsigned long num)
+{
+  unsigned char dword[4];
+
+  if (fseek(outfile, address, SEEK_SET) == -1) {
+    audio_error = ":fseek";
+    return -1;
+  }
+
+  int32(dword, num);
+
+  if (fwrite(dword, sizeof(dword), 1, outfile) != 1) {
+    audio_error = ":fwrite";
+    return -1;
+  }
+
+  if (fseek(outfile, 0, SEEK_END) == -1) {
+    audio_error = ":fseek";
+    return -1;
+  }
+
+  return 0;
+}
+
+static
+int finish(struct audio_finish *finish)
+{
+  int result = 0;
+
+  if (config_precision == 0) {
+    struct audio_config dummy;
+
+    /* write empty chunks */
+
+    dummy.command   = AUDIO_COMMAND_CONFIG;
+    dummy.channels  = 2;
+    dummy.speed     = 44100;
+    dummy.precision = 0;
+
+    result = config(&dummy);
+  }
+
+  if (data_len & 1) {
+    if (fputc(0, outfile) == EOF && result == 0) {
+      audio_error = ":fputc";
+      result = -1;
+    }
+
+    ++riff_len;
+  }
+
+  if (result == 0 &&
+      data_chunk != -1 && patch_int32(data_chunk + 4, data_len) == -1)
+    result = -1;
+
+  if (result == 0)
+    patch_int32(4, riff_len);
+
+  if (outfile != stdout &&
+      fclose(outfile) == EOF &&
+      result == 0) {
+    audio_error = ":fclose";
+    result = -1;
+  }
+
+  return result;
+}
+
+int audio_wave(union audio_control *control)
+{
+  audio_error = 0;
+
+  switch (control->command) {
+  case AUDIO_COMMAND_INIT:
+    return init(&control->init);
+
+  case AUDIO_COMMAND_CONFIG:
+    return config(&control->config);
+
+  case AUDIO_COMMAND_PLAY:
+    return play(&control->play);
+
+  case AUDIO_COMMAND_STOP:
+    return stop(&control->stop);
+
+  case AUDIO_COMMAND_FINISH:
+    return finish(&control->finish);
+  }
+
+  return 0;
+}