Changeset 277 for GPL/branches/alsa-resync1/alsa-kernel/drivers/dummy.c

Timestamp:

Dec 14, 2007, 8:27:04 AM (18 years ago)

Author:

Brendan Oakley

Message:

Merged to ALSA 0.9.8

File:

• GPL/branches/alsa-resync1/alsa-kernel/drivers/dummy.c (modified) (6 diffs)

GPL/branches/alsa-resync1/alsa-kernel/drivers/dummy.c

@@ -44 +44 @@
 #define MAX_MIDI_DEVICES        2
 
+#if 0 /* emu10k1 emulation */
+#define MAX_BUFFER_SIZE         (128 * 1024)
+static int emu10k1_playback_constraints(snd_pcm_runtime_t *runtime)
+{
+        int err;
+        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
+                return err;
+        if ((err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX)) < 0)
+                return err;
+        return 0;
+}
+#define add_playback_constraints emu10k1_playback_constraints
+#endif
 
 #if 0 /* RME9652 emulation */
@@ -105 +118 @@
 #ifndef USE_PERIODS_MAX
 #define USE_PERIODS_MAX         1024
+#endif
+#ifndef add_playback_constraints
+#define add_playback_constraints(x) 0
+#endif
+#ifndef add_capture_constraints
+#define add_capture_constraints(x) 0
 #endif
 
@@ -334 +353 @@
     snd_pcm_runtime_t *runtime = substream->runtime;
     snd_card_dummy_pcm_t *dpcm;
+        int err;
 
     dpcm = kcalloc(1, sizeof(*dpcm), GFP_KERNEL);
@@ -356 +376 @@
     if (substream->pcm->device & 2)
         runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
+        if ((err = add_playback_constraints(runtime)) < 0) {
+                snd_magic_kfree(dpcm);
+                return err;
+        }
+
     return 0;
 }
@@ -363 +388 @@
     snd_pcm_runtime_t *runtime = substream->runtime;
     snd_card_dummy_pcm_t *dpcm;
+        int err;
 
     dpcm = kcalloc(1, sizeof(*dpcm), GFP_KERNEL);
@@ -386 +412 @@
     if (substream->pcm->device & 2)
         runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
+        if ((err = add_capture_constraints(runtime)) < 0) {
+                snd_magic_kfree(dpcm);
+                return err;
+        }
+
     return 0;
 }