codec may write into to store details about a single instance of that codec.
Most of the context is implementation specific, and thus opaque to the
application. The context structure as seen by the application is of fixed
- size, and thus can be allocated eith with automatic storage or dynamically
+ size, and thus can be allocated with automatic storage or dynamically
on the heap.
Most operations require an initialized codec context. Codec context
the ABI is versioned. The ABI version number must be passed at
initialization time to ensure the application is using a header file that
matches the library. The current ABI version number is stored in the
- prepropcessor macros #VPX_CODEC_ABI_VERSION, #VPX_ENCODER_ABI_VERSION, and
+ preprocessor macros #VPX_CODEC_ABI_VERSION, #VPX_ENCODER_ABI_VERSION, and
#VPX_DECODER_ABI_VERSION. For convenience, each initialization function has
a wrapper macro that inserts the correct version number. These macros are
named like the initialization methods, but without the _ver suffix.
The special value <code>0</code> is reserved to represent an infinite
deadline. In this case, the codec will perform as much processing as
- possible to yeild the highest quality frame.
+ possible to yield the highest quality frame.
By convention, the value <code>1</code> is used to mean "return as fast as
possible."
/*! \page usage_xma External Memory Allocation
Applications that wish to have fine grained control over how and where
- decoders allocate memory \ref MAY make use of the e_xternal Memory Allocation
+ decoders allocate memory \ref MAY make use of the eXternal Memory Allocation
(XMA) interface. Not all codecs support the XMA \ref usage_features.
To use a decoder in XMA mode, the decoder \ref MUST be initialized with the
allocate is heavily dependent on the size of the encoded video frames. The
size of the video must be known before requesting the decoder's memory map.
This stream information can be obtained with the vpx_codec_peek_stream_info()
- function, which does not require a contructed decoder context. If the exact
+ function, which does not require a constructed decoder context. If the exact
stream is not known, a stream info structure can be created that reflects
the maximum size that the decoder instance is required to support.
\section usage_xma_seg_szalign Segment Size and Alignment
The sz (size) and align (alignment) parameters describe the required size
and alignment of the requested segment. Alignment will always be a power of
- two. Applications \ref MUST honor the aligment requested. Failure to do so
+ two. Applications \ref MUST honor the alignment requested. Failure to do so
could result in program crashes or may incur a speed penalty.
\section usage_xma_seg_flags Segment Flags
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