May 2017
Beginner to intermediate
470 pages
10h 49m
English
Content preview from Android System Programming
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Releasing graphic buffers
As we mentioned previously, the Gralloc module can be used to allocate and release graphic buffers. Now that we have learnt how to allocate buffers from framebuffer devices or system memory, let's have a look at how to release graphic buffers.
To release graphic buffers, the gralloc_free function is used:
static int gralloc_free(alloc_device_t* dev, buffer_handle_t handle) { if (private_handle_t::validate(handle) < 0) return -EINVAL; private_handle_t const* hnd = reinterpret_cast<private_handle_t const*> (handle); if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) { // free this buffer private_module_t* m = reinterpret_cast<private_module_t*>( dev->common.module); const size_t bufferSize = m->finfo.line_length ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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