1 files changed, 73 insertions, 0 deletions
diff --git a/media/libstagefright/include/avc_utils.h b/media/libstagefright/include/avc_utils.h
new file mode 100644
index 0000000..e418822
--- /dev/null
+++ b/media/libstagefright/include/avc_utils.h
@@ -0,0 +1,73 @@
+/*
+ * 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.
+ */
+
+#ifndef AVC_UTILS_H_
+
+#define AVC_UTILS_H_
+
+#include <media/stagefright/foundation/ABuffer.h>
+#include <utils/Errors.h>
+
+namespace android {
+
+struct ABitReader;
+
+enum {
+    kAVCProfileBaseline      = 0x42,
+    kAVCProfileMain          = 0x4d,
+    kAVCProfileExtended      = 0x58,
+    kAVCProfileHigh          = 0x64,
+    kAVCProfileHigh10        = 0x6e,
+    kAVCProfileHigh422       = 0x7a,
+    kAVCProfileHigh444       = 0xf4,
+    kAVCProfileCAVLC444Intra = 0x2c
+};
+
+void FindAVCDimensions(
+        const sp<ABuffer> &seqParamSet, int32_t *width, int32_t *height);
+
+unsigned parseUE(ABitReader *br);
+
+status_t getNextNALUnit(
+        const uint8_t **_data, size_t *_size,
+        const uint8_t **nalStart, size_t *nalSize,
+        bool startCodeFollows = false);
+
+struct MetaData;
+sp<MetaData> MakeAVCCodecSpecificData(const sp<ABuffer> &accessUnit);
+
+bool IsIDR(const sp<ABuffer> &accessUnit);
+bool IsAVCReferenceFrame(const sp<ABuffer> &accessUnit);
+
+const char *AVCProfileToString(uint8_t profile);
+
+sp<MetaData> MakeAACCodecSpecificData(
+        unsigned profile, unsigned sampling_freq_index,
+        unsigned channel_configuration);
+
+// Given an MPEG4 video VOL-header chunk (starting with 0x00 0x00 0x01 0x2?)
+// parse it and fill in dimensions, returns true iff successful.
+bool ExtractDimensionsFromVOLHeader(
+        const uint8_t *data, size_t size, int32_t *width, int32_t *height);
+
+bool GetMPEGAudioFrameSize(
+        uint32_t header, size_t *frame_size,
+        int *out_sampling_rate = NULL, int *out_channels = NULL,
+        int *out_bitrate = NULL, int *out_num_samples = NULL);
+
+}  // namespace android
+
+#endif  // AVC_UTILS_H_