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d4572c8957
./configure --disable-vp8-encoder --disable-multithread Also add VPX/VP8 headers for an easy build on Windows. Throw in the necessary lines into the Makefile but do not enable VPX support yet. git-svn-id: https://svn.eduke32.com/eduke32@2036 1a8010ca-5511-0410-912e-c29ae57300e0
587 lines
23 KiB
C
587 lines
23 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*!\defgroup decoder Common Decoder Algorithm Interface
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* This abstraction allows applications using this decoder to easily support
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* multiple video formats with minimal code duplication. This section describes
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* the interface common to all codecs.
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* @{
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*/
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/*!\file
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* \brief Provides a compatibility layer between version 1 and 2 of this API.
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*
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* This interface has been deprecated. Only existing code should make use
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* of this interface, and therefore, it is only thinly documented. Existing
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* code should be ported to the vpx_codec_* API.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef VPX_DECODER_COMPAT_H
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#define VPX_DECODER_COMPAT_H
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/*!\brief Decoder algorithm return codes */
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typedef enum {
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/*!\brief Operation completed without error */
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VPX_DEC_OK = VPX_CODEC_OK,
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/*!\brief Unspecified error */
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VPX_DEC_ERROR = VPX_CODEC_ERROR,
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/*!\brief Memory operation failed */
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VPX_DEC_MEM_ERROR = VPX_CODEC_MEM_ERROR,
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/*!\brief ABI version mismatch */
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VPX_DEC_ABI_MISMATCH = VPX_CODEC_ABI_MISMATCH,
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/*!\brief The given bitstream is not supported.
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*
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* The bitstream was unable to be parsed at the highest level. The decoder
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* is unable to proceed. This error \ref SHOULD be treated as fatal to the
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* stream. */
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VPX_DEC_UNSUP_BITSTREAM = VPX_CODEC_UNSUP_BITSTREAM,
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/*!\brief Encoded bitstream uses an unsupported feature
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*
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* The decoder does not implement a feature required by the encoder. This
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* return code should only be used for features that prevent future
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* pictures from being properly decoded. This error \ref MAY be treated as
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* fatal to the stream or \ref MAY be treated as fatal to the current GOP.
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*/
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VPX_DEC_UNSUP_FEATURE = VPX_CODEC_UNSUP_FEATURE,
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/*!\brief The coded data for this stream is corrupt or incomplete
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*
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* There was a problem decoding the current frame. This return code
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* should only be used for failures that prevent future pictures from
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* being properly decoded. This error \ref MAY be treated as fatal to the
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* stream or \ref MAY be treated as fatal to the current GOP. If decoding
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* is continued for the current GOP, artifacts may be present.
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*/
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VPX_DEC_CORRUPT_FRAME = VPX_CODEC_CORRUPT_FRAME,
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/*!\brief An application-supplied parameter is not valid.
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*
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*/
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VPX_DEC_INVALID_PARAM = VPX_CODEC_INVALID_PARAM,
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/*!\brief An iterator reached the end of list.
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*
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*/
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VPX_DEC_LIST_END = VPX_CODEC_LIST_END
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}
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vpx_dec_err_t;
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/*! \brief Decoder capabilities bitfield
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*
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* Each decoder advertises the capabilities it supports as part of its
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* ::vpx_dec_iface_t interface structure. Capabilities are extra interfaces
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* or functionality, and are not required to be supported by a decoder.
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*
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* The available flags are specified by VPX_DEC_CAP_* defines.
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*/
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typedef int vpx_dec_caps_t;
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#define VPX_DEC_CAP_PUT_SLICE 0x0001 /**< Will issue put_slice callbacks */
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#define VPX_DEC_CAP_PUT_FRAME 0x0002 /**< Will issue put_frame callbacks */
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#define VPX_DEC_CAP_XMA 0x0004 /**< Supports eXternal Memory Allocation */
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/*!\brief Stream properties
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*
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* This structure is used to query or set properties of the decoded
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* stream. Algorithms may extend this structure with data specific
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* to their bitstream by setting the sz member appropriately.
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*/
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#if 1
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typedef vpx_codec_stream_info_t vpx_dec_stream_info_t;
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#else
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typedef struct
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{
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unsigned int sz; /**< Size of this structure */
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unsigned int w; /**< Width (or 0 for unknown/default) */
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unsigned int h; /**< Height (or 0 for unknown/default) */
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unsigned int is_kf; /**< Current frame is a keyframe */
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} vpx_dec_stream_info_t;
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#endif
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/*!\brief Decoder interface structure.
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*
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* Contains function pointers and other data private to the decoder
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* implementation. This structure is opaque to the application.
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*/
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typedef const struct vpx_codec_iface vpx_dec_iface_t;
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typedef struct vpx_codec_priv vpx_dec_priv_t;
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/*!\brief Iterator
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*
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* Opaque storage used for iterating over lists.
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*/
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typedef vpx_codec_iter_t vpx_dec_iter_t;
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/*!\brief Decoder context structure
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*
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* All decoders \ref MUST support this context structure fully. In general,
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* this data should be considered private to the decoder algorithm, and
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* not be manipulated or examined by the calling application. Applications
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* may reference the 'name' member to get a printable description of the
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* algorithm.
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*/
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#if 1
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typedef vpx_codec_ctx_t vpx_dec_ctx_t;
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#else
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typedef struct
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{
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const char *name; /**< Printable interface name */
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vpx_dec_iface_t *iface; /**< Interface pointers */
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vpx_dec_err_t err; /**< Last returned error */
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vpx_dec_priv_t *priv; /**< Algorithm private storage */
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} vpx_dec_ctx_t;
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#endif
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/*!\brief Return the build configuration
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*
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* Returns a printable string containing an encoded version of the build
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* configuration. This may be useful to vpx support.
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*
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*/
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const char *vpx_dec_build_config(void) DEPRECATED;
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/*!\brief Return the name for a given interface
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*
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* Returns a human readable string for name of the given decoder interface.
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*
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* \param[in] iface Interface pointer
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*
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*/
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const char *vpx_dec_iface_name(vpx_dec_iface_t *iface) DEPRECATED;
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/*!\brief Convert error number to printable string
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*
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* Returns a human readable string for the last error returned by the
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* algorithm. The returned error will be one line and will not contain
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* any newline characters.
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*
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*
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* \param[in] err Error number.
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*
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*/
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const char *vpx_dec_err_to_string(vpx_dec_err_t err) DEPRECATED;
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/*!\brief Retrieve error synopsis for decoder context
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*
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* Returns a human readable string for the last error returned by the
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* algorithm. The returned error will be one line and will not contain
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* any newline characters.
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*
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*
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* \param[in] ctx Pointer to this instance's context.
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*
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*/
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const char *vpx_dec_error(vpx_dec_ctx_t *ctx) DEPRECATED;
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/*!\brief Retrieve detailed error information for decoder context
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*
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* Returns a human readable string providing detailed information about
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* the last error.
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*
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* \param[in] ctx Pointer to this instance's context.
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*
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* \retval NULL
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* No detailed information is available.
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*/
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const char *vpx_dec_error_detail(vpx_dec_ctx_t *ctx) DEPRECATED;
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/* REQUIRED FUNCTIONS
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*
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* The following functions are required to be implemented for all decoders.
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* They represent the base case functionality expected of all decoders.
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*/
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/*!\brief Initialize a decoder instance
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*
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* Initializes a decoder context using the given interface. Applications
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* should call the vpx_dec_init convenience macro instead of this
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* function directly, to ensure that the ABI version number parameter
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* is properly initialized.
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*
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* \param[in] ctx Pointer to this instance's context.
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* \param[in] iface Pointer to the algorithm interface to use.
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* \param[in] ver ABI version number. Must be set to
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* VPX_DECODER_ABI_VERSION
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* \retval #VPX_DEC_OK
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* The decoder algorithm initialized.
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* \retval #VPX_DEC_MEM_ERROR
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* Memory allocation failed.
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*/
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vpx_dec_err_t vpx_dec_init_ver(vpx_dec_ctx_t *ctx,
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vpx_dec_iface_t *iface,
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int ver) DEPRECATED;
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#define vpx_dec_init(ctx, iface) \
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vpx_dec_init_ver(ctx, iface, VPX_DECODER_ABI_VERSION)
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/*!\brief Destroy a decoder instance
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*
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* Destroys a decoder context, freeing any associated memory buffers.
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*
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* \param[in] ctx Pointer to this instance's context
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*
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* \retval #VPX_DEC_OK
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* The decoder algorithm initialized.
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* \retval #VPX_DEC_MEM_ERROR
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* Memory allocation failed.
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*/
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vpx_dec_err_t vpx_dec_destroy(vpx_dec_ctx_t *ctx) DEPRECATED;
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/*!\brief Get the capabilities of an algorithm.
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*
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* Retrieves the capabilities bitfield from the algorithm's interface.
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*
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* \param[in] iface Pointer to the algorithm interface
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*
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*/
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vpx_dec_caps_t vpx_dec_get_caps(vpx_dec_iface_t *iface) DEPRECATED;
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/*!\brief Parse stream info from a buffer
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*
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* Performs high level parsing of the bitstream. Construction of a decoder
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* context is not necessary. Can be used to determine if the bitstream is
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* of the proper format, and to extract information from the stream.
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*
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* \param[in] iface Pointer to the algorithm interface
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* \param[in] data Pointer to a block of data to parse
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* \param[in] data_sz Size of the data buffer
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* \param[in,out] si Pointer to stream info to update. The size member
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* \ref MUST be properly initialized, but \ref MAY be
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* clobbered by the algorithm. This parameter \ref MAY
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* be NULL.
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*
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* \retval #VPX_DEC_OK
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* Bitstream is parsable and stream information updated
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*/
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vpx_dec_err_t vpx_dec_peek_stream_info(vpx_dec_iface_t *iface,
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const uint8_t *data,
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unsigned int data_sz,
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vpx_dec_stream_info_t *si) DEPRECATED;
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/*!\brief Return information about the current stream.
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*
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* Returns information about the stream that has been parsed during decoding.
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*
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* \param[in] ctx Pointer to this instance's context
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* \param[in,out] si Pointer to stream info to update. The size member
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* \ref MUST be properly initialized, but \ref MAY be
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* clobbered by the algorithm. This parameter \ref MAY
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* be NULL.
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*
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* \retval #VPX_DEC_OK
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* Bitstream is parsable and stream information updated
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*/
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vpx_dec_err_t vpx_dec_get_stream_info(vpx_dec_ctx_t *ctx,
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vpx_dec_stream_info_t *si) DEPRECATED;
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/*!\brief Control algorithm
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*
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* This function is used to exchange algorithm specific data with the decoder
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* instance. This can be used to implement features specific to a particular
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* algorithm.
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*
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* This wrapper function dispatches the request to the helper function
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* associated with the given ctrl_id. It tries to call this function
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* transparently, but will return #VPX_DEC_ERROR if the request could not
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* be dispatched.
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*
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* \param[in] ctx Pointer to this instance's context
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* \param[in] ctrl_id Algorithm specific control identifier
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* \param[in,out] data Data to exchange with algorithm instance.
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*
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* \retval #VPX_DEC_OK
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* The control request was processed.
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* \retval #VPX_DEC_ERROR
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* The control request was not processed.
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* \retval #VPX_DEC_INVALID_PARAM
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* The data was not valid.
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*/
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vpx_dec_err_t vpx_dec_control(vpx_dec_ctx_t *ctx,
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int ctrl_id,
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void *data) DEPRECATED;
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/*!\brief Decode data
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*
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* Processes a buffer of coded data. If the processing results in a new
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* decoded frame becoming available, #VPX_DEC_CB_PUT_SLICE and
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* #VPX_DEC_CB_PUT_FRAME events may be generated, as appropriate. Encoded data
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* \ref MUST be passed in DTS (decode time stamp) order. Frames produced will
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* always be in PTS (presentation time stamp) order.
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*
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* \param[in] ctx Pointer to this instance's context
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* \param[in] data Pointer to this block of new coded data. If
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* NULL, a VPX_DEC_CB_PUT_FRAME event is posted
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* for the previously decoded frame.
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* \param[in] data_sz Size of the coded data, in bytes.
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* \param[in] user_priv Application specific data to associate with
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* this frame.
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* \param[in] rel_pts PTS relative to the previous frame, in us. If
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* unknown or unavailable, set to zero.
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*
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* \return Returns #VPX_DEC_OK if the coded data was processed completely
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* and future pictures can be decoded without error. Otherwise,
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* see the descriptions of the other error codes in ::vpx_dec_err_t
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* for recoverability capabilities.
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*/
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vpx_dec_err_t vpx_dec_decode(vpx_dec_ctx_t *ctx,
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uint8_t *data,
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unsigned int data_sz,
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void *user_priv,
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int rel_pts) DEPRECATED;
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/*!\brief Decoded frames iterator
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*
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* Iterates over a list of the frames available for display. The iterator
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* storage should be initialized to NULL to start the iteration. Iteration is
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* complete when this function returns NULL.
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*
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* The list of available frames becomes valid upon completion of the
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* vpx_dec_decode call, and remains valid until the next call to vpx_dec_decode.
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*
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* \param[in] ctx Pointer to this instance's context
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* \param[in out] iter Iterator storage, initialized to NULL
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*
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* \return Returns a pointer to an image, if one is ready for display. Frames
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* produced will always be in PTS (presentation time stamp) order.
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*/
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vpx_image_t *vpx_dec_get_frame(vpx_dec_ctx_t *ctx,
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vpx_dec_iter_t *iter) DEPRECATED;
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/*!\defgroup cap_put_frame Frame-Based Decoding Functions
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*
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* The following functions are required to be implemented for all decoders
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* that advertise the VPX_DEC_CAP_PUT_FRAME capability. Calling these functions
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* for codecs that don't advertise this capability will result in an error
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* code being returned, usually VPX_DEC_ERROR
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* @{
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*/
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/*!\brief put frame callback prototype
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*
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* This callback is invoked by the decoder to notify the application of
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* the availability of decoded image data.
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*/
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typedef void (*vpx_dec_put_frame_cb_fn_t)(void *user_priv,
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const vpx_image_t *img);
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/*!\brief Register for notification of frame completion.
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*
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* Registers a given function to be called when a decoded frame is
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* available.
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*
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* \param[in] ctx Pointer to this instance's context
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* \param[in] cb Pointer to the callback function
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* \param[in] user_priv User's private data
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*
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* \retval #VPX_DEC_OK
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* Callback successfully registered.
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* \retval #VPX_DEC_ERROR
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* Decoder context not initialized, or algorithm not capable of
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* posting slice completion.
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*/
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vpx_dec_err_t vpx_dec_register_put_frame_cb(vpx_dec_ctx_t *ctx,
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vpx_dec_put_frame_cb_fn_t cb,
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void *user_priv) DEPRECATED;
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/*!@} - end defgroup cap_put_frame */
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/*!\defgroup cap_put_slice Slice-Based Decoding Functions
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*
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* The following functions are required to be implemented for all decoders
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* that advertise the VPX_DEC_CAP_PUT_SLICE capability. Calling these functions
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* for codecs that don't advertise this capability will result in an error
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* code being returned, usually VPX_DEC_ERROR
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* @{
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*/
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/*!\brief put slice callback prototype
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*
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* This callback is invoked by the decoder to notify the application of
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* the availability of partially decoded image data. The
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*/
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typedef void (*vpx_dec_put_slice_cb_fn_t)(void *user_priv,
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const vpx_image_t *img,
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const vpx_image_rect_t *valid,
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const vpx_image_rect_t *update);
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/*!\brief Register for notification of slice completion.
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*
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* Registers a given function to be called when a decoded slice is
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* available.
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*
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* \param[in] ctx Pointer to this instance's context
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* \param[in] cb Pointer to the callback function
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* \param[in] user_priv User's private data
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*
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* \retval #VPX_DEC_OK
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* Callback successfully registered.
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* \retval #VPX_DEC_ERROR
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* Decoder context not initialized, or algorithm not capable of
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* posting slice completion.
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*/
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vpx_dec_err_t vpx_dec_register_put_slice_cb(vpx_dec_ctx_t *ctx,
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vpx_dec_put_slice_cb_fn_t cb,
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void *user_priv) DEPRECATED;
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/*!@} - end defgroup cap_put_slice*/
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/*!\defgroup cap_xma External Memory Allocation Functions
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*
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* The following functions are required to be implemented for all decoders
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* that advertise the VPX_DEC_CAP_XMA capability. Calling these functions
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* for codecs that don't advertise this capability will result in an error
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* code being returned, usually VPX_DEC_ERROR
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* @{
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*/
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/*!\brief Memory Map Entry
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*
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* This structure is used to contain the properties of a memory segment. It
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* is populated by the decoder in the request phase, and by the calling
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* application once the requested allocation has been performed.
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*/
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#if 1
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#define VPX_DEC_MEM_ZERO 0x1 /**< Segment must be zeroed by allocation */
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#define VPX_DEC_MEM_WRONLY 0x2 /**< Segment need not be readable */
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#define VPX_DEC_MEM_FAST 0x4 /**< Place in fast memory, if available */
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typedef struct vpx_codec_mmap vpx_dec_mmap_t;
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#else
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typedef struct vpx_dec_mmap
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{
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/*
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* The following members are set by the codec when requesting a segment
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*/
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unsigned int id; /**< identifier for the segment's contents */
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unsigned long sz; /**< size of the segment, in bytes */
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unsigned int align; /**< required alignment of the segment, in bytes */
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unsigned int flags; /**< bitfield containing segment properties */
|
|
#define VPX_DEC_MEM_ZERO 0x1 /**< Segment must be zeroed by allocation */
|
|
#define VPX_DEC_MEM_WRONLY 0x2 /**< Segment need not be readable */
|
|
#define VPX_DEC_MEM_FAST 0x4 /**< Place in fast memory, if available */
|
|
|
|
/* The following members are to be filled in by the allocation function */
|
|
void *base; /**< pointer to the allocated segment */
|
|
void (*dtor)(struct vpx_dec_mmap *map); /**< destructor to call */
|
|
void *priv; /**< allocator private storage */
|
|
} vpx_dec_mmap_t;
|
|
#endif
|
|
|
|
/*!\brief Initialize a decoder instance in external allocation mode
|
|
*
|
|
* Initializes a decoder context using the given interface. Applications
|
|
* should call the vpx_dec_xma_init convenience macro instead of this
|
|
* function directly, to ensure that the ABI version number parameter
|
|
* is properly initialized.
|
|
*
|
|
* \param[in] ctx Pointer to this instance's context.
|
|
* \param[in] iface Pointer to the algorithm interface to use.
|
|
* \param[in] ver ABI version number. Must be set to
|
|
* VPX_DECODER_ABI_VERSION
|
|
* \retval #VPX_DEC_OK
|
|
* The decoder algorithm initialized.
|
|
* \retval #VPX_DEC_ERROR
|
|
* Decoder does not support XMA mode.
|
|
*/
|
|
vpx_dec_err_t vpx_dec_xma_init_ver(vpx_dec_ctx_t *ctx,
|
|
vpx_dec_iface_t *iface,
|
|
int ver) DEPRECATED;
|
|
#define vpx_dec_xma_init(ctx, iface) \
|
|
vpx_dec_xma_init_ver(ctx, iface, VPX_DECODER_ABI_VERSION)
|
|
|
|
|
|
/*!\brief Iterate over the list of segments to allocate.
|
|
*
|
|
* Iterates over a list of the segments to allocate. The iterator storage
|
|
* should be initialized to NULL to start the iteration. Iteration is complete
|
|
* when this function returns VPX_DEC_LIST_END. The amount of memory needed to
|
|
* allocate is dependent upon the size of the encoded stream. This means that
|
|
* the stream info structure must be known at allocation time. It can be
|
|
* populated with the vpx_dec_peek_stream_info() function. In cases where the
|
|
* stream to be decoded is not available at allocation time, a fixed size must
|
|
* be requested. The decoder will not be able to decode streams larger than
|
|
* the size used at allocation time.
|
|
*
|
|
* \param[in] ctx Pointer to this instance's context.
|
|
* \param[out] mmap Pointer to the memory map entry to populate.
|
|
* \param[in] si Pointer to the stream info.
|
|
* \param[in out] iter Iterator storage, initialized to NULL
|
|
*
|
|
* \retval #VPX_DEC_OK
|
|
* The memory map entry was populated.
|
|
* \retval #VPX_DEC_ERROR
|
|
* Decoder does not support XMA mode.
|
|
* \retval #VPX_DEC_MEM_ERROR
|
|
* Unable to determine segment size from stream info.
|
|
*/
|
|
vpx_dec_err_t vpx_dec_get_mem_map(vpx_dec_ctx_t *ctx,
|
|
vpx_dec_mmap_t *mmap,
|
|
const vpx_dec_stream_info_t *si,
|
|
vpx_dec_iter_t *iter) DEPRECATED;
|
|
|
|
|
|
/*!\brief Identify allocated segments to decoder instance
|
|
*
|
|
* Stores a list of allocated segments in the decoder. Segments \ref MUST be
|
|
* passed in the order they are read from vpx_dec_get_mem_map(), but may be
|
|
* passed in groups of any size. Segments \ref MUST be set only once. The
|
|
* allocation function \ref MUST ensure that the vpx_dec_mmap_t::base member
|
|
* is non-NULL. If the segment requires cleanup handling (e.g., calling free()
|
|
* or close()) then the vpx_dec_mmap_t::dtor member \ref MUST be populated.
|
|
*
|
|
* \param[in] ctx Pointer to this instance's context.
|
|
* \param[in] mmaps Pointer to the first memory map entry in the list.
|
|
* \param[in] num_maps Number of entries being set at this time
|
|
*
|
|
* \retval #VPX_DEC_OK
|
|
* The segment was stored in the decoder context.
|
|
* \retval #VPX_DEC_ERROR
|
|
* Decoder does not support XMA mode.
|
|
* \retval #VPX_DEC_MEM_ERROR
|
|
* Segment base address was not set, or segment was already stored.
|
|
|
|
*/
|
|
vpx_dec_err_t vpx_dec_set_mem_map(vpx_dec_ctx_t *ctx,
|
|
vpx_dec_mmap_t *mmaps,
|
|
unsigned int num_maps) DEPRECATED;
|
|
|
|
/*!@} - end defgroup cap_xma*/
|
|
/*!@} - end defgroup decoder*/
|
|
|
|
|
|
#endif
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|