diff options
Diffstat (limited to 'include/gui/IGraphicBufferProducer.h')
| -rw-r--r-- | include/gui/IGraphicBufferProducer.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/include/gui/IGraphicBufferProducer.h b/include/gui/IGraphicBufferProducer.h index 5c50b2b39..4ca4cd50d 100644 --- a/include/gui/IGraphicBufferProducer.h +++ b/include/gui/IGraphicBufferProducer.h @@ -218,8 +218,9 @@ public: // // Return of a negative value means an error has occurred: // * NO_INIT - the buffer queue has been abandoned. - // * BAD_VALUE - outSlot or buffer were NULL or invalid combination of - // async mode and buffer count override. + // * BAD_VALUE - outSlot or buffer were NULL, invalid combination of + // async mode and buffer count override, or the generation + // number of the buffer did not match the buffer queue. // * INVALID_OPERATION - cannot attach the buffer because it would cause // too many buffers to be dequeued, either because // the producer already has a single buffer dequeued @@ -470,6 +471,15 @@ public: // eligible slot is available, dequeueBuffer will block or return an error // as usual. virtual status_t allowAllocation(bool allow) = 0; + + // Sets the current generation number of the BufferQueue. + // + // This generation number will be inserted into any buffers allocated by the + // BufferQueue, and any attempts to attach a buffer with a different + // generation number will fail. Buffers already in the queue are not + // affected and will retain their current generation number. The generation + // number defaults to 0. + virtual status_t setGenerationNumber(uint32_t generationNumber) = 0; }; // ---------------------------------------------------------------------------- |