The following section is required to be implemented for all decoders that advertise the VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER capability. Calling this function for codecs that don't advertise this capability will result in an error code being returned, usually VPX_CODEC_ERROR.
- Note
- Currently this only works with VP9.
◆ vpx_codec_set_frame_buffer_functions()
Pass in external frame buffers for the decoder to use.
Registers functions to be called when libvpx needs a frame buffer to decode the current frame and a function to be called when libvpx does not internally reference the frame buffer. This set function must be called before the first call to decode or libvpx will assume the default behavior of allocating frame buffers internally.
- Parameters
-
[in] | ctx | Pointer to this instance's context |
[in] | cb_get | Pointer to the get callback function |
[in] | cb_release | Pointer to the release callback function |
[in] | cb_priv | Callback's private data |
- Return values
-
- Note
- When decoding VP9, the application may be required to pass in at least VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS external frame buffers.