1 files changed, 97 insertions, 0 deletions
diff --git a/services/audioflinger/AudioHwDevice.cpp b/services/audioflinger/AudioHwDevice.cpp
new file mode 100644
index 0000000..3191598
--- /dev/null
+++ b/services/audioflinger/AudioHwDevice.cpp
@@ -0,0 +1,97 @@
+/*
+**
+** Copyright 2007, 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.
+*/
+
+#define LOG_TAG "AudioHwDevice"
+//#define LOG_NDEBUG 0
+
+#include <hardware/audio.h>
+#include <utils/Log.h>
+
+#include <audio_utils/spdif/SPDIFEncoder.h>
+
+#include "AudioHwDevice.h"
+#include "AudioStreamOut.h"
+#include "SpdifStreamOut.h"
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+status_t AudioHwDevice::openOutputStream(
+        AudioStreamOut **ppStreamOut,
+        audio_io_handle_t handle,
+        audio_devices_t devices,
+        audio_output_flags_t flags,
+        struct audio_config *config,
+        const char *address)
+{
+
+    struct audio_config originalConfig = *config;
+    AudioStreamOut *outputStream = new AudioStreamOut(this, flags);
+
+    // Try to open the HAL first using the current format.
+    ALOGV("openOutputStream(), try "
+            " sampleRate %d, Format %#x, "
+            "channelMask %#x",
+            config->sample_rate,
+            config->format,
+            config->channel_mask);
+    status_t status = outputStream->open(handle, devices, config, address);
+
+    if (status != NO_ERROR) {
+        delete outputStream;
+        outputStream = NULL;
+
+        // FIXME Look at any modification to the config.
+        // The HAL might modify the config to suggest a wrapped format.
+        // Log this so we can see what the HALs are doing.
+        ALOGI("openOutputStream(), HAL returned"
+            " sampleRate %d, Format %#x, "
+            "channelMask %#x, status %d",
+            config->sample_rate,
+            config->format,
+            config->channel_mask,
+            status);
+
+        // If the data is encoded then try again using wrapped PCM.
+        bool wrapperNeeded = !audio_is_linear_pcm(originalConfig.format)
+                && ((flags & AUDIO_OUTPUT_FLAG_DIRECT) != 0)
+                && ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0);
+
+        if (wrapperNeeded) {
+            if (SPDIFEncoder::isFormatSupported(originalConfig.format)) {
+                outputStream = new SpdifStreamOut(this, flags, originalConfig.format);
+                status = outputStream->open(handle, devices, &originalConfig, address);
+                if (status != NO_ERROR) {
+                    ALOGE("ERROR - openOutputStream(), SPDIF open returned %d",
+                        status);
+                    delete outputStream;
+                    outputStream = NULL;
+                }
+            } else {
+                ALOGE("ERROR - openOutputStream(), SPDIFEncoder does not support format 0x%08x",
+                    originalConfig.format);
+            }
+        }
+    }
+
+    *ppStreamOut = outputStream;
+    return status;
+}
+
+
+}; // namespace android