services/audioflinger/PatchPanel.h

/*
**
** Copyright 2014, 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.
*/

#ifndef INCLUDING_FROM_AUDIOFLINGER_H
    #error This header file should only be included from AudioFlinger.h
#endif

class PatchPanel : public RefBase {
public:
    PatchPanel(const sp<AudioFlinger>& audioFlinger);
    virtual ~PatchPanel();

    /* List connected audio ports and their attributes */
    status_t listAudioPorts(unsigned int *num_ports,
                                    struct audio_port *ports);

    /* Get supported attributes for a given audio port */
    status_t getAudioPort(struct audio_port *port);

    /* Create a patch between several source and sink ports */
    status_t createAudioPatch(const struct audio_patch *patch,
                                       audio_patch_handle_t *handle);

    /* Release a patch */
    status_t releaseAudioPatch(audio_patch_handle_t handle);

    /* List connected audio devices and they attributes */
    status_t listAudioPatches(unsigned int *num_patches,
                                      struct audio_patch *patches);

    /* Set audio port configuration */
    status_t setAudioPortConfig(const struct audio_port_config *config);

    class Patch {
    public:
        Patch(const struct audio_patch *patch) :
            mAudioPatch(*patch), mHandle(0), mHalHandle(0) {}

        struct audio_patch mAudioPatch;
        audio_patch_handle_t mHandle;
        audio_patch_handle_t mHalHandle;
    };
private:
    const wp<AudioFlinger>  mAudioFlinger;
    SortedVector <Patch *> mPatches;
};