original

[gb-231r1-is01/GB_2.3_IS01.git] / system / media / opensles / libopensles / IMIDITempo.c

diff --git a/system/media/opensles/libopensles/IMIDITempo.c b/system/media/opensles/libopensles/IMIDITempo.c
new file mode 100644 (file)
index 0000000..daa9133
--- /dev/null
+++ b/system/media/opensles/libopensles/IMIDITempo.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* MIDITempo implementation */
+
+#include "sles_allinclusive.h"
+
+
+static SLresult IMIDITempo_SetTicksPerQuarterNote(SLMIDITempoItf self, SLuint32 tpqn)
+{
+    SL_ENTER_INTERFACE
+
+    if (!(1 <= tpqn && tpqn <= 32767)) {
+        result = SL_RESULT_PARAMETER_INVALID;
+    } else {
+        IMIDITempo *this = (IMIDITempo *) self;
+        interface_lock_poke(this);
+        this->mTicksPerQuarterNote = tpqn;
+        interface_unlock_poke(this);
+        result = SL_RESULT_SUCCESS;
+    }
+
+    SL_LEAVE_INTERFACE
+}
+
+
+static SLresult IMIDITempo_GetTicksPerQuarterNote(SLMIDITempoItf self, SLuint32 *pTpqn)
+{
+    SL_ENTER_INTERFACE
+
+    if (NULL == pTpqn) {
+        result = SL_RESULT_PARAMETER_INVALID;
+    } else {
+        IMIDITempo *this = (IMIDITempo *) self;
+        interface_lock_peek(this);
+        SLuint32 ticksPerQuarterNote = this->mTicksPerQuarterNote;
+        interface_unlock_peek(this);
+        *pTpqn = ticksPerQuarterNote;
+        result = SL_RESULT_SUCCESS;
+    }
+
+    SL_LEAVE_INTERFACE
+}
+
+
+static SLresult IMIDITempo_SetMicrosecondsPerQuarterNote(SLMIDITempoItf self, SLmicrosecond uspqn)
+{
+    SL_ENTER_INTERFACE
+
+    // spec says zero, is that correct?
+    if (!(1 <= uspqn && uspqn <= 16777215)) {
+        result = SL_RESULT_PARAMETER_INVALID;
+    } else {
+        IMIDITempo *this = (IMIDITempo *) self;
+        interface_lock_poke(this);
+        this->mMicrosecondsPerQuarterNote = uspqn;
+        interface_unlock_poke(this);
+        result = SL_RESULT_SUCCESS;
+    }
+
+    SL_LEAVE_INTERFACE
+}
+
+
+static SLresult IMIDITempo_GetMicrosecondsPerQuarterNote(SLMIDITempoItf self, SLmicrosecond *uspqn)
+{
+    SL_ENTER_INTERFACE
+
+    if (NULL == uspqn) {
+        result = SL_RESULT_PARAMETER_INVALID;
+    } else {
+        IMIDITempo *this = (IMIDITempo *) self;
+        interface_lock_peek(this);
+        SLuint32 microsecondsPerQuarterNote = this->mMicrosecondsPerQuarterNote;
+        interface_unlock_peek(this);
+        *uspqn = microsecondsPerQuarterNote;
+        result = SL_RESULT_SUCCESS;
+    }
+
+    SL_LEAVE_INTERFACE
+}
+
+
+static const struct SLMIDITempoItf_ IMIDITempo_Itf = {
+    IMIDITempo_SetTicksPerQuarterNote,
+    IMIDITempo_GetTicksPerQuarterNote,
+    IMIDITempo_SetMicrosecondsPerQuarterNote,
+    IMIDITempo_GetMicrosecondsPerQuarterNote
+};
+
+void IMIDITempo_init(void *self)
+{
+    IMIDITempo *this = (IMIDITempo *) self;
+    this->mItf = &IMIDITempo_Itf;
+    this->mTicksPerQuarterNote = 32; // wrong
+    this->mMicrosecondsPerQuarterNote = 100; // wrong
+}