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+/*
+ * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+
+/*!\defgroup vp8_decoder WebM VP8 Decoder
+ * \ingroup vp8
+ *
+ * @{
+ */
+/*!\file
+ * \brief Provides definitions for using the VP8 algorithm within the vpx Decoder
+ * interface.
+ */
+#ifndef VPX_VP8DX_H_
+#define VPX_VP8DX_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Include controls common to both the encoder and decoder */
+#include "./vp8.h"
+
+/*!\name Algorithm interface for VP8
+ *
+ * This interface provides the capability to decode raw VP8 streams, as would
+ * be found in AVI files and other non-Flash uses.
+ * @{
+ */
+extern vpx_codec_iface_t vpx_codec_vp8_dx_algo;
+extern vpx_codec_iface_t *vpx_codec_vp8_dx(void);
+
+/* TODO(jkoleszar): These move to VP9 in a later patch set. */
+extern vpx_codec_iface_t vpx_codec_vp9_dx_algo;
+extern vpx_codec_iface_t *vpx_codec_vp9_dx(void);
+/*!@} - end algorithm interface member group*/
+
+
+/*!\enum vp8_dec_control_id
+ * \brief VP8 decoder control functions
+ *
+ * This set of macros define the control functions available for the VP8
+ * decoder interface.
+ *
+ * \sa #vpx_codec_control
+ */
+enum vp8_dec_control_id {
+ /** control function to get info on which reference frames were updated
+ * by the last decode
+ */
+ VP8D_GET_LAST_REF_UPDATES = VP8_DECODER_CTRL_ID_START,
+
+ /** check if the indicated frame is corrupted */
+ VP8D_GET_FRAME_CORRUPTED,
+
+ /** control function to get info on which reference frames were used
+ * by the last decode
+ */
+ VP8D_GET_LAST_REF_USED,
+
+ /** decryption function to decrypt encoded buffer data immediately
+ * before decoding. Takes a vpx_decrypt_init, which contains
+ * a callback function and opaque context pointer.
+ */
+ VPXD_SET_DECRYPTOR,
+ VP8D_SET_DECRYPTOR = VPXD_SET_DECRYPTOR,
+
+ /** control function to get the display dimensions for the current frame. */
+ VP9D_GET_DISPLAY_SIZE,
+
+ /** For testing. */
+ VP9_INVERT_TILE_DECODE_ORDER,
+
+ VP8_DECODER_CTRL_ID_MAX
+};
+
+/** Decrypt n bytes of data from input -> output, using the decrypt_state
+ * passed in VPXD_SET_DECRYPTOR.
+ */
+typedef void (*vpx_decrypt_cb)(void *decrypt_state, const unsigned char *input,
+ unsigned char *output, int count);
+
+/*!\brief Structure to hold decryption state
+ *
+ * Defines a structure to hold the decryption state and access function.
+ */
+typedef struct vpx_decrypt_init {
+ /*! Decrypt callback. */
+ vpx_decrypt_cb decrypt_cb;
+
+ /*! Decryption state. */
+ void *decrypt_state;
+} vpx_decrypt_init;
+
+/*!\brief A deprecated alias for vpx_decrypt_init.
+ */
+typedef vpx_decrypt_init vp8_decrypt_init;
+
+
+/*!\brief VP8 decoder control function parameter type
+ *
+ * Defines the data types that VP8D control functions take. Note that
+ * additional common controls are defined in vp8.h
+ *
+ */
+
+
+VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_UPDATES, int *)
+VPX_CTRL_USE_TYPE(VP8D_GET_FRAME_CORRUPTED, int *)
+VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_USED, int *)
+VPX_CTRL_USE_TYPE(VPXD_SET_DECRYPTOR, vpx_decrypt_init *)
+VPX_CTRL_USE_TYPE(VP8D_SET_DECRYPTOR, vpx_decrypt_init *)
+VPX_CTRL_USE_TYPE(VP9D_GET_DISPLAY_SIZE, int *)
+VPX_CTRL_USE_TYPE(VP9_INVERT_TILE_DECODE_ORDER, int)
+
+/*! @} - end defgroup vp8_decoder */
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // VPX_VP8DX_H_
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