StagefrightRecorder: Add support for WAVE recording

* Forward port the cm-12.1 code

Change-Id: I77373a236108507b8fa76cc8d3016de36aade301

1 files changed, 108 insertions, 0 deletions

diff --git a/include/media/stagefright/WAVEWriter.h b/include/media/stagefright/WAVEWriter.h
new file mode 100644
index 0000000..766d8f4
--- /dev/null
+++ b/include/media/stagefright/WAVEWriter.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2012, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WAVE_WRITER_H_
+
+#define WAVE_WRITER_H_
+
+#include <stdio.h>
+
+#include <media/stagefright/MediaWriter.h>
+#include <utils/threads.h>
+
+namespace android {
+
+
+#define ID_RIFF 0x46464952
+#define ID_WAVE 0x45564157
+#define ID_FMT  0x20746d66
+#define ID_DATA 0x61746164
+#define FORMAT_PCM 1
+
+
+struct MediaSource;
+struct MetaData;
+
+struct wav_header {
+    uint32_t riff_id;
+    uint32_t riff_sz;
+    uint32_t riff_fmt;
+    uint32_t fmt_id;
+    uint32_t fmt_sz;
+    uint16_t audio_format;
+    uint16_t num_channels;
+    uint32_t sample_rate;
+    uint32_t byte_rate;       /* sample_rate * num_channels * bps / 8 */
+    uint16_t block_align;     /* num_channels * bps / 8 */
+    uint16_t bits_per_sample;
+    uint32_t data_id;
+    uint32_t data_sz;
+};
+
+
+struct WAVEWriter : public MediaWriter {
+    WAVEWriter(const char *filename);
+    WAVEWriter(int fd);
+
+    status_t initCheck() const;
+
+    virtual status_t addSource(const sp<MediaSource> &source);
+    virtual bool reachedEOS();
+    virtual status_t start(MetaData *params = NULL);
+    virtual status_t stop();
+    virtual status_t pause();
+
+protected:
+    virtual ~WAVEWriter();
+
+private:
+    int   mFd;
+    status_t mInitCheck;
+    sp<MediaSource> mSource;
+    bool mStarted;
+    volatile bool mPaused;
+    volatile bool mResumed;
+    volatile bool mDone;
+    volatile bool mReachedEOS;
+    pthread_t mThread;
+    int64_t mEstimatedSizeBytes;
+    int64_t mEstimatedDurationUs;
+
+    static void *ThreadWrapper(void *);
+    status_t threadFunc();
+    bool exceedsFileSizeLimit();
+    bool exceedsFileDurationLimit();
+
+    WAVEWriter(const WAVEWriter &);
+    WAVEWriter &operator=(const WAVEWriter &);
+};
+
+}  // namespace android
+
+#endif  // WAVE_WRITER_H_