More refactoring osssrc has more features now, like query/convert etc

Original commit message from CVS:
More refactoring
osssrc has more features now, like query/convert etc

1 files changed, 356 insertions, 2 deletions

diff --git a/sys/oss/gstosscommon.c b/sys/oss/gstosscommon.c
index cadf5a2d..50128c79 100644
--- a/sys/oss/gstosscommon.c
+++ b/sys/oss/gstosscommon.c
@@ -21,10 +21,19 @@
  */
 
 
-#include "gstosscommon.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
 #include <sys/soundcard.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
 
-gboolean 
+#include <config.h>
+#include "gstosscommon.h"
+
+static gboolean 
 gst_ossformat_get (gint law, gint endianness, gboolean sign, gint width, gint depth,
 		   gint *format, gint *bps) 
 {
@@ -89,3 +98,348 @@ gst_ossformat_get (gint law, gint endianness, gboolean sign, gint width, gint de
 
   return TRUE;
 }
+
+void 
+gst_osscommon_init (GstOssCommon *common) 
+{
+  common->device = g_strdup ("/dev/dsp");
+  common->fd = -1;
+
+  common->law = 0;
+  common->endianness = G_BYTE_ORDER;
+  common->sign = TRUE;
+  common->width = 16;
+  common->depth = 16;
+  common->channels = 2;
+  common->rate = 44100;
+  common->fragment = 6;
+  common->bps = 0;
+
+/* AFMT_*_BE not available on all OSS includes (e.g. FBSD) */
+#ifdef WORDS_BIGENDIAN
+  common->format = AFMT_S16_BE;
+#else
+  common->format = AFMT_S16_LE;
+#endif /* WORDS_BIGENDIAN */  
+}
+
+gboolean 
+gst_osscommon_parse_caps (GstOssCommon *common, GstCaps *caps) 
+{
+  gint bps, format;
+
+  gst_caps_get_int (caps, "width", &common->width);
+  gst_caps_get_int (caps, "depth", &common->depth);
+	        
+  if (common->width != common->depth) 
+    return FALSE;
+		  
+  gst_caps_get_int (caps, "law", &common->law); 
+  gst_caps_get_int (caps, "endianness", &common->endianness);
+  gst_caps_get_boolean (caps, "signed", &common->sign);
+			    
+  if (!gst_ossformat_get (common->law, common->endianness, common->sign, 
+                          common->width, common->depth, &format, &bps))
+  { 
+     GST_DEBUG (GST_CAT_PLUGIN_INFO, "could not get format");
+     return FALSE;
+  }
+
+  gst_caps_get_int (caps, "channels", &common->channels);
+  gst_caps_get_int (caps, "rate", &common->rate);
+			      
+  common->bps = bps * common->channels * common->rate;
+  common->format = format;
+
+  return TRUE;
+}
+
+#define GET_FIXED_INT(caps, name, dest)         \
+G_STMT_START {                                  \
+  if (gst_caps_has_fixed_property (caps, name)) \
+    gst_caps_get_int (caps, name, dest);        \
+} G_STMT_END
+#define GET_FIXED_BOOLEAN(caps, name, dest)     \
+G_STMT_START {                                  \
+  if (gst_caps_has_fixed_property (caps, name)) \
+    gst_caps_get_boolean (caps, name, dest);    \
+} G_STMT_END
+
+gboolean 
+gst_osscommon_merge_fixed_caps (GstOssCommon *common, GstCaps *caps) 
+{
+  gint bps, format;
+
+  /* peel off fixed stuff from the caps */
+  GET_FIXED_INT         (caps, "law",        &common->law);
+  GET_FIXED_INT         (caps, "endianness", &common->endianness);
+  GET_FIXED_BOOLEAN     (caps, "signed",     &common->sign);
+  GET_FIXED_INT         (caps, "width",      &common->width);
+  GET_FIXED_INT         (caps, "depth",      &common->depth);
+
+  if (!gst_ossformat_get (common->law, common->endianness, common->sign, 
+                          common->width, common->depth, &format, &bps))
+  { 
+     return FALSE;
+  }
+
+  GET_FIXED_INT         (caps, "rate",       &common->rate);
+  GET_FIXED_INT         (caps, "channels",   &common->channels);
+			      
+  common->bps = bps * common->channels * common->rate;
+  common->format = format;
+					  
+  return TRUE;
+}
+
+gboolean 
+gst_osscommon_sync_parms (GstOssCommon *common) 
+{
+  audio_buf_info space;
+  int frag;
+  gint target_format;
+  gint target_channels;
+  gint target_rate;
+  gint fragscale, frag_ln;
+
+  if (common->fd == -1)
+    return FALSE;
+  
+  if (common->fragment >> 16)
+    frag = common->fragment;
+  else
+    frag = 0x7FFF0000 | common->fragment;
+  
+  GST_INFO (GST_CAT_PLUGIN_INFO, 
+            "common: setting sound card to %dHz %d format %s (%08x fragment)",
+            common->rate, common->format,
+            (common->channels == 2) ? "stereo" : "mono", frag);
+
+  ioctl (common->fd, SNDCTL_DSP_SETFRAGMENT, &frag);
+  ioctl (common->fd, SNDCTL_DSP_RESET, 0);
+
+  target_format   = common->format;
+  target_channels = common->channels;
+  target_rate     = common->rate;
+
+  ioctl (common->fd, SNDCTL_DSP_SETFMT,   &common->format);
+  ioctl (common->fd, SNDCTL_DSP_CHANNELS, &common->channels);
+  ioctl (common->fd, SNDCTL_DSP_SPEED,    &common->rate);
+
+  ioctl (common->fd, SNDCTL_DSP_GETBLKSIZE, &common->fragment_size);
+
+  if (common->mode == GST_OSSCOMMON_WRITE) {
+    ioctl (common->fd, SNDCTL_DSP_GETOSPACE, &space);
+  }
+  else {
+    ioctl (common->fd, SNDCTL_DSP_GETISPACE, &space);
+  }
+
+  /* calculate new fragment using a poor man's logarithm function */
+  fragscale = 1;
+  frag_ln = 0;
+  while (fragscale < space.fragsize) {
+    fragscale <<= 1;
+    frag_ln++;
+  }
+  common->fragment = space.fragstotal << 16 | frag_ln;
+	  
+  GST_INFO (GST_CAT_PLUGIN_INFO, 
+            "common: set sound card to %dHz, %d format, %s "
+	    "(%d bytes buffer, %08x fragment)",
+            common->rate, common->format,
+            (common->channels == 2) ? "stereo" : "mono", 
+	    space.bytes, common->fragment);
+
+  common->fragment_time = (GST_SECOND * common->fragment_size) / common->bps;
+  GST_INFO (GST_CAT_PLUGIN_INFO, "fragment time %u %llu\n", 
+            common->bps, common->fragment_time);
+
+  if (target_format   != common->format   ||
+      target_channels != common->channels ||
+      target_rate     != common->rate) 
+  {
+    g_warning ("couldn't set requested OSS parameters, enjoy the noise :)");
+    /* we could eventually return FALSE here, or just do some additional tests
+     * to see that the frequencies don't differ too much etc.. */
+  }
+  return TRUE;
+}
+
+gboolean
+gst_osscommon_open_audio (GstOssCommon *common, GstOssOpenMode mode, gchar **error)
+{
+  gint caps;
+  g_return_val_if_fail (common->fd == -1, FALSE);
+
+  GST_INFO (GST_CAT_PLUGIN_INFO, "common: attempting to open sound device");
+
+  /* first try to open the sound card */
+  /* FIXME: this code is dubious, why do we need to open and close this ?*/
+  if (mode == GST_OSSCOMMON_WRITE) {
+    common->fd = open (common->device, O_WRONLY | O_NONBLOCK);
+    if (errno == EBUSY) {
+      g_warning ("osscommon: unable to open the sound device (in use ?)\n");
+    }
+
+    if (common->fd >= 0)
+      close (common->fd);
+  
+    /* re-open the sound device in blocking mode */
+    common->fd = open (common->device, O_WRONLY);
+  }
+  else {
+    common->fd = open (common->device, O_RDONLY);
+  }
+
+  if (common->fd < 0) {
+    switch (errno) {
+      case EISDIR:
+	*error = g_strdup_printf ("osscommon: Device %s is a directory",
+			   common->device);
+	break;
+      case EACCES:
+      case ETXTBSY:
+	*error = g_strdup_printf ( "osscommon: Cannot access %s, check permissions",
+			   common->device);
+	break;
+      case ENXIO:
+      case ENODEV:
+      case ENOENT:
+	*error = g_strdup_printf ("osscommon: Cannot access %s, does it exist ?",
+			   common->device);
+	break;
+      case EROFS:
+	*error = g_strdup_printf ("osscommon: Cannot access %s, read-only filesystem ?",
+			   common->device);
+      default:
+	/* FIXME: strerror is not threadsafe */
+	*error = g_strdup_printf ("osscommon: Cannot open %s, generic error: %s",
+			   common->device, strerror (errno));
+	break;
+    }
+    return FALSE;
+  }
+
+  common->mode = mode;
+
+  /* we have it, set the default parameters and go have fun */
+  /* set card state */
+  ioctl (common->fd, SNDCTL_DSP_GETCAPS, &caps);
+
+  GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon: Capabilities %08x", caps);
+
+  if (caps & DSP_CAP_DUPLEX)	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Full duplex");
+  if (caps & DSP_CAP_REALTIME) 	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Realtime");
+  if (caps & DSP_CAP_BATCH)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Batch");
+  if (caps & DSP_CAP_COPROC)   	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Has coprocessor");
+  if (caps & DSP_CAP_TRIGGER)  	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Trigger");
+  if (caps & DSP_CAP_MMAP)     	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Direct access");
+
+#ifdef DSP_CAP_MULTI
+  if (caps & DSP_CAP_MULTI)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Multiple open");
+#endif /* DSP_CAP_MULTI */
+
+#ifdef DSP_CAP_BIND
+  if (caps & DSP_CAP_BIND)     	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   Channel binding");
+#endif /* DSP_CAP_BIND */
+
+  ioctl(common->fd, SNDCTL_DSP_GETFMTS, &caps);
+
+  GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon: Formats %08x", caps);
+  if (caps & AFMT_MU_LAW)  	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   MU_LAW");
+  if (caps & AFMT_A_LAW)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   A_LAW");
+  if (caps & AFMT_IMA_ADPCM)   	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   IMA_ADPCM");
+  if (caps & AFMT_U8)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   U8");
+  if (caps & AFMT_S16_LE)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   S16_LE");
+  if (caps & AFMT_S16_BE)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   S16_BE");
+  if (caps & AFMT_S8)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   S8");
+  if (caps & AFMT_U16_LE)       GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   U16_LE");
+  if (caps & AFMT_U16_BE)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   U16_BE");
+  if (caps & AFMT_MPEG)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   MPEG");
+#ifdef AFMT_AC3
+  if (caps & AFMT_AC3)    	GST_INFO (GST_CAT_PLUGIN_INFO, "osscommon:   AC3");
+#endif
+
+  GST_INFO (GST_CAT_PLUGIN_INFO, 
+		   "osscommon: opened audio (%s) with fd=%d", common->device, common->fd);
+
+  common->caps = caps;
+
+  return TRUE;
+}
+
+void
+gst_osscommon_close_audio (GstOssCommon *common)
+{
+  if (common->fd < 0) 
+    return;
+
+  close(common->fd);
+  common->fd = -1;
+}
+
+gboolean
+gst_osscommon_convert (GstOssCommon *common, GstFormat src_format, gint64 src_value,
+	               GstFormat *dest_format, gint64 *dest_value)
+{
+  gboolean res = TRUE;
+
+  if (src_format == *dest_format) {
+    *dest_value = src_value;
+    return TRUE;
+  }
+
+  if (common->bps == 0 || common->channels == 0 || common->width == 0)
+    return FALSE;
+
+  switch (src_format) {
+    case GST_FORMAT_BYTES:
+      switch (*dest_format) {
+        case GST_FORMAT_DEFAULT:
+          *dest_format = GST_FORMAT_TIME;
+        case GST_FORMAT_TIME:
+	  *dest_value = src_value * GST_SECOND / common->bps;
+          break;
+        case GST_FORMAT_UNITS:
+	  *dest_value = src_value / (common->channels * common->width);
+          break;
+        default:
+          res = FALSE;
+      }
+      break;
+    case GST_FORMAT_TIME:
+      switch (*dest_format) {
+        case GST_FORMAT_DEFAULT:
+          *dest_format = GST_FORMAT_BYTES;
+        case GST_FORMAT_BYTES:
+	  *dest_value = src_value * common->bps / GST_SECOND;
+          break;
+        case GST_FORMAT_UNITS:
+	  *dest_value = src_value * common->rate / GST_SECOND;
+          break;
+        default:
+          res = FALSE;
+      }
+      break;
+    case GST_FORMAT_UNITS:
+      switch (*dest_format) {
+        case GST_FORMAT_DEFAULT:
+          *dest_format = GST_FORMAT_TIME;
+        case GST_FORMAT_TIME:
+	  *dest_value = src_value * GST_SECOND / common->rate;
+          break;
+        case GST_FORMAT_BYTES:
+	  *dest_value = src_value * common->channels * common->width;
+          break;
+        default:
+          res = FALSE;
+      }
+      break;
+    default:
+      res = FALSE;
+  }
+
+  return res;
+}
+