(61d00a474) v0.9.7.1
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Regalis
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/*
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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 vp8_decoder WebM VP8/VP9 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 VP8 or VP9 within the vpx Decoder
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* interface.
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*/
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#ifndef VPX_VPX_VP8DX_H_
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#define VPX_VPX_VP8DX_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Include controls common to both the encoder and decoder */
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#include "./vp8.h"
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/*!\name Algorithm interface for VP8
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*
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* This interface provides the capability to decode VP8 streams.
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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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/*!@} - end algorithm interface member group*/
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/*!\name Algorithm interface for VP9
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*
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* This interface provides the capability to decode VP9 streams.
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* @{
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*/
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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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/*!\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 vpx_decrypt_init, which contains
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* a callback function and opaque context pointer.
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*/
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VPXD_SET_DECRYPTOR,
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VP8D_SET_DECRYPTOR = VPXD_SET_DECRYPTOR,
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/** control function to get the dimensions that the current frame is decoded
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* at. This may be different to the intended display size for the frame as
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* specified in the wrapper or frame header (see VP9D_GET_DISPLAY_SIZE). */
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VP9D_GET_FRAME_SIZE,
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/** control function to get the current frame's intended display dimensions
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* (as specified in the wrapper or frame header). This may be different to
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* the decoded dimensions of this frame (see VP9D_GET_FRAME_SIZE). */
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VP9D_GET_DISPLAY_SIZE,
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/** control function to get the bit depth of the stream. */
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VP9D_GET_BIT_DEPTH,
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/** control function to set the byte alignment of the planes in the reference
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* buffers. Valid values are power of 2, from 32 to 1024. A value of 0 sets
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* legacy alignment. I.e. Y plane is aligned to 32 bytes, U plane directly
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* follows Y plane, and V plane directly follows U plane. Default value is 0.
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*/
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VP9_SET_BYTE_ALIGNMENT,
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/** control function to invert the decoding order to from right to left. The
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* function is used in a test to confirm the decoding independence of tile
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* columns. The function may be used in application where this order
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* of decoding is desired.
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*
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* TODO(yaowu): Rework the unit test that uses this control, and in a future
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* release, this test-only control shall be removed.
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*/
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VP9_INVERT_TILE_DECODE_ORDER,
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/** control function to set the skip loop filter flag. Valid values are
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* integers. The decoder will skip the loop filter when its value is set to
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* nonzero. If the loop filter is skipped the decoder may accumulate decode
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* artifacts. The default value is 0.
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*/
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VP9_SET_SKIP_LOOP_FILTER,
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/** control function to decode SVC stream up to the x spatial layers,
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* where x is passed in through the control, and is 0 for base layer.
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*/
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VP9_DECODE_SVC_SPATIAL_LAYER,
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/*!\brief Codec control function to get last decoded frame quantizer.
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*
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* Return value uses internal quantizer scale defined by the codec.
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*
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* Supported in codecs: VP8, VP9
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*/
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VPXD_GET_LAST_QUANTIZER,
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/*!\brief Codec control function to set row level multi-threading.
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*
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* 0 : off, 1 : on
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*
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* Supported in codecs: VP9
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*/
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VP9D_SET_ROW_MT,
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/*!\brief Codec control function to set loopfilter optimization.
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*
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* 0 : off, Loop filter is done after all tiles have been decoded
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* 1 : on, Loop filter is done immediately after decode without
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* waiting for all threads to sync.
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*
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* Supported in codecs: VP9
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*/
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VP9D_SET_LOOP_FILTER_OPT,
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VP8_DECODER_CTRL_ID_MAX
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};
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/** Decrypt n bytes of data from input -> output, using the decrypt_state
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* passed in VPXD_SET_DECRYPTOR.
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*/
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typedef void (*vpx_decrypt_cb)(void *decrypt_state, const unsigned char *input,
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unsigned char *output, int count);
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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 vpx_decrypt_init {
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/*! Decrypt callback. */
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vpx_decrypt_cb decrypt_cb;
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/*! Decryption state. */
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void *decrypt_state;
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} vpx_decrypt_init;
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/*!\cond */
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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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#define VPX_CTRL_VP8D_GET_LAST_REF_UPDATES
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VPX_CTRL_USE_TYPE(VP8D_GET_FRAME_CORRUPTED, int *)
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#define VPX_CTRL_VP8D_GET_FRAME_CORRUPTED
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VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_USED, int *)
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#define VPX_CTRL_VP8D_GET_LAST_REF_USED
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VPX_CTRL_USE_TYPE(VPXD_GET_LAST_QUANTIZER, int *)
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#define VPX_CTRL_VPXD_GET_LAST_QUANTIZER
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VPX_CTRL_USE_TYPE(VPXD_SET_DECRYPTOR, vpx_decrypt_init *)
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#define VPX_CTRL_VPXD_SET_DECRYPTOR
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VPX_CTRL_USE_TYPE(VP8D_SET_DECRYPTOR, vpx_decrypt_init *)
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#define VPX_CTRL_VP8D_SET_DECRYPTOR
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VPX_CTRL_USE_TYPE(VP9D_GET_DISPLAY_SIZE, int *)
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#define VPX_CTRL_VP9D_GET_DISPLAY_SIZE
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VPX_CTRL_USE_TYPE(VP9D_GET_BIT_DEPTH, unsigned int *)
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#define VPX_CTRL_VP9D_GET_BIT_DEPTH
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VPX_CTRL_USE_TYPE(VP9D_GET_FRAME_SIZE, int *)
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#define VPX_CTRL_VP9D_GET_FRAME_SIZE
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VPX_CTRL_USE_TYPE(VP9_INVERT_TILE_DECODE_ORDER, int)
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#define VPX_CTRL_VP9_INVERT_TILE_DECODE_ORDER
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#define VPX_CTRL_VP9_DECODE_SVC_SPATIAL_LAYER
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VPX_CTRL_USE_TYPE(VP9_DECODE_SVC_SPATIAL_LAYER, int)
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#define VPX_CTRL_VP9_SET_SKIP_LOOP_FILTER
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VPX_CTRL_USE_TYPE(VP9_SET_SKIP_LOOP_FILTER, int)
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#define VPX_CTRL_VP9_DECODE_SET_ROW_MT
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VPX_CTRL_USE_TYPE(VP9D_SET_ROW_MT, int)
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#define VPX_CTRL_VP9_SET_LOOP_FILTER_OPT
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VPX_CTRL_USE_TYPE(VP9D_SET_LOOP_FILTER_OPT, int)
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/*!\endcond */
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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 // VPX_VPX_VP8DX_H_
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