diff options
Diffstat (limited to 'include/media/hardware/MetadataBufferType.h')
| -rw-r--r-- | include/media/hardware/MetadataBufferType.h | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/include/media/hardware/MetadataBufferType.h b/include/media/hardware/MetadataBufferType.h index 5876c40..b765203 100644 --- a/include/media/hardware/MetadataBufferType.h +++ b/include/media/hardware/MetadataBufferType.h @@ -77,28 +77,43 @@ typedef enum { * GRalloc buffer. The encoder needs to interpret this GRalloc handle * and encode the frames. * -------------------------------------------------------------- - * | kMetadataBufferTypeGrallocSource | sizeof(buffer_handle_t) | + * | kMetadataBufferTypeGrallocSource | buffer_handle_t buffer | * -------------------------------------------------------------- + * + * See the VideoGrallocMetadata structure. */ kMetadataBufferTypeGrallocSource = 1, /* * kMetadataBufferTypeGraphicBuffer is used to indicate that * the payload of the metadata buffers can be interpreted as - * a GraphicBuffer. It is only to be used by software encoders. - * In this case, the metadata that the encoder receives - * will have a byte stream that consists of two parts: + * an ANativeWindowBuffer, and that a fence is provided. + * + * In this case, the metadata will have a byte stream that consists of three parts: * 1. First, there is an integer indicating that the metadata - * contains a GraphicBuffer (kMetadataBufferTypeGraphicBuffer) - * 2. This is followed by the pointer to the GraphicBuffer that - * is to be encoded. Encoder must not create a sp<> from this - * graphic buffer, or free it, as it does not actually own this - * buffer. - * -------------------------------------------------------------- - * | kMetadataBufferTypeGraphicBuffer | sizeof(GraphicBuffer *) | - * -------------------------------------------------------------- + * contains an ANativeWindowBuffer (kMetadataBufferTypeANWBuffer) + * 2. This is followed by the pointer to the ANativeWindowBuffer. + * Codec must not free this buffer as it does not actually own this buffer. + * 3. Finally, there is an integer containing a fence file descriptor. + * The codec must wait on the fence before encoding or decoding into this + * buffer. When the buffer is returned, codec must replace this file descriptor + * with a new fence, that will be waited on before the buffer is replaced + * (encoder) or read (decoder). + * --------------------------------- + * | kMetadataBufferTypeANWBuffer | + * --------------------------------- + * | ANativeWindowBuffer *buffer | + * --------------------------------- + * | int fenceFd | + * --------------------------------- + * + * See the VideoNativeMetadata structure. */ - kMetadataBufferTypeGraphicBuffer = 2, + kMetadataBufferTypeANWBuffer = 2, + + /* This value is used by framework, but is never used inside a metadata buffer */ + kMetadataBufferTypeInvalid = -1, + // Add more here... |