зеркало из https://github.com/mozilla/gecko-dev.git
117 строки
3.1 KiB
C
117 строки
3.1 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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#include "vp8.h"
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/*!\defgroup vp8_decoder WebM VP8 Decoder
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* \ingroup vp8
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*
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* @{
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*/
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/*!\file
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* \brief Provides definitions for using the VP8 algorithm within the vpx Decoder
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* interface.
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*/
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#ifndef VP8DX_H
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#define VP8DX_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*!\name Algorithm interface for VP8
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*
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* This interface provides the capability to decode raw VP8 streams, as would
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* be found in AVI files and other non-Flash uses.
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* @{
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*/
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extern vpx_codec_iface_t vpx_codec_vp8_dx_algo;
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extern vpx_codec_iface_t *vpx_codec_vp8_dx(void);
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/* TODO(jkoleszar): These move to VP9 in a later patch set. */
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extern vpx_codec_iface_t vpx_codec_vp9_dx_algo;
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extern vpx_codec_iface_t *vpx_codec_vp9_dx(void);
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/*!@} - end algorithm interface member group*/
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/* Include controls common to both the encoder and decoder */
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#include "vp8.h"
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/*!\enum vp8_dec_control_id
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* \brief VP8 decoder control functions
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*
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* This set of macros define the control functions available for the VP8
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* decoder interface.
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*
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* \sa #vpx_codec_control
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*/
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enum vp8_dec_control_id {
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/** control function to get info on which reference frames were updated
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* by the last decode
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*/
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VP8D_GET_LAST_REF_UPDATES = VP8_DECODER_CTRL_ID_START,
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/** check if the indicated frame is corrupted */
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VP8D_GET_FRAME_CORRUPTED,
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/** control function to get info on which reference frames were used
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* by the last decode
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*/
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VP8D_GET_LAST_REF_USED,
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/** decryption function to decrypt encoded buffer data immediately
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* before decoding. Takes a vp8_decrypt_init, which contains
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* a callback function and opaque context pointer.
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*/
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VP8D_SET_DECRYPTOR,
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/** For testing. */
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VP9_INVERT_TILE_DECODE_ORDER,
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VP8_DECODER_CTRL_ID_MAX
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};
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/*!\brief Structure to hold decryption state
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*
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* Defines a structure to hold the decryption state and access function.
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*/
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typedef struct vp8_decrypt_init {
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/** Decrypt n bytes of data from input -> output, using the decrypt_state
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* passed in VP8D_SET_DECRYPTOR.
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*/
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void (*decrypt_cb)(void *decrypt_state, const unsigned char *input,
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unsigned char *output, int count);
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/*! Decryption state. */
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void *decrypt_state;
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} vp8_decrypt_init;
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/*!\brief VP8 decoder control function parameter type
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*
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* Defines the data types that VP8D control functions take. Note that
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* additional common controls are defined in vp8.h
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*
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*/
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VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_UPDATES, int *)
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VPX_CTRL_USE_TYPE(VP8D_GET_FRAME_CORRUPTED, int *)
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VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_USED, int *)
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VPX_CTRL_USE_TYPE(VP8D_SET_DECRYPTOR, vp8_decrypt_init *)
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VPX_CTRL_USE_TYPE(VP9_INVERT_TILE_DECODE_ORDER, int)
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/*! @} - end defgroup vp8_decoder */
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif
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