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-rw-r--r--media/libstagefright/avc_utils.cpp27
1 files changed, 12 insertions, 15 deletions
diff --git a/media/libstagefright/avc_utils.cpp b/media/libstagefright/avc_utils.cpp
index fc03607..5ec3438 100644
--- a/media/libstagefright/avc_utils.cpp
+++ b/media/libstagefright/avc_utils.cpp
@@ -222,28 +222,25 @@ status_t getNextNALUnit(
*nalStart = NULL;
*nalSize = 0;
- if (size == 0) {
+ if (size < 3) {
return -EAGAIN;
}
- // Skip any number of leading 0x00.
-
size_t offset = 0;
- while (offset < size && data[offset] == 0x00) {
- ++offset;
- }
-
- if (offset == size) {
- return -EAGAIN;
- }
// A valid startcode consists of at least two 0x00 bytes followed by 0x01.
-
- if (offset < 2 || data[offset] != 0x01) {
- return ERROR_MALFORMED;
+ for (; offset + 2 < size; ++offset) {
+ if (data[offset + 2] == 0x01 && data[offset] == 0x00
+ && data[offset + 1] == 0x00) {
+ break;
+ }
}
-
- ++offset;
+ if (offset + 2 >= size) {
+ *_data = &data[offset];
+ *_size = 2;
+ return -EAGAIN;
+ }
+ offset += 3;
size_t startOffset = offset;