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lib/libva/va/va_dec_jpeg.h

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+/*
+ * Copyright (c) 2007-2012 Intel Corporation. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file va_dec_jpeg.h
+ * \brief The JPEG decoding API
+ *
+ * This file contains the \ref api_dec_jpeg "JPEG decoding API".
+ */
+
+#ifndef VA_DEC_JPEG_H
+#define VA_DEC_JPEG_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <va/va.h>
+
+/**
+ * \defgroup api_dec_jpeg JPEG decoding API
+ *
+ * This JPEG decoding API supports Baseline profile only.
+ *
+ * @{
+ */
+
+/**
+ * \brief Picture parameter for JPEG decoding.
+ *
+ * This structure holds information from the frame header, along with
+ * definitions from additional segments.
+ */
+typedef struct _VAPictureParameterBufferJPEGBaseline {
+    /** \brief Picture width in pixels. */
+    uint16_t      picture_width;
+    /** \brief Picture height in pixels. */
+    uint16_t      picture_height;
+
+    struct {
+        /** \brief Component identifier (Ci). */
+        uint8_t   component_id;
+        /** \brief Horizontal sampling factor (Hi). */
+        uint8_t   h_sampling_factor;
+        /** \brief Vertical sampling factor (Vi). */
+        uint8_t   v_sampling_factor;
+        /* \brief Quantization table selector (Tqi). */
+        uint8_t   quantiser_table_selector;
+    }                   components[255];
+    /** \brief Number of components in frame (Nf). */
+    uint8_t       num_components;
+
+    /** \brief Input color space 0: YUV, 1: RGB, 2: BGR, others: reserved */
+    uint8_t       color_space;
+    /** \brief Set to VA_ROTATION_* for a single rotation angle reported by VAConfigAttribDecJPEG. */
+    uint32_t      rotation;
+    /** \brief crop rectangle boundary in pixels */
+    VARectangle   crop_rectangle;
+    /** \brief Reserved bytes for future use, must be zero */
+    uint32_t                va_reserved[VA_PADDING_MEDIUM - 3];
+} VAPictureParameterBufferJPEGBaseline;
+
+/**
+ * \brief Quantization table for JPEG decoding.
+ *
+ * This structure holds the complete quantization tables. This is an
+ * aggregation of all quantization table (DQT) segments maintained by
+ * the application. i.e. up to 4 quantization tables are stored in
+ * there for baseline profile.
+ *
+ * The #load_quantization_table array can be used as a hint to notify
+ * the VA driver implementation about which table(s) actually changed
+ * since the last submission of this buffer.
+ *
+ * The #quantiser_table values are specified in zig-zag scan order.
+ */
+typedef struct _VAIQMatrixBufferJPEGBaseline {
+    /** \brief Specifies which #quantiser_table is valid. */
+    uint8_t       load_quantiser_table[4];
+    /** \brief Quanziation tables indexed by table identifier (Tqi). */
+    uint8_t       quantiser_table[4][64];
+
+    /** \brief Reserved bytes for future use, must be zero */
+    uint32_t                va_reserved[VA_PADDING_LOW];
+} VAIQMatrixBufferJPEGBaseline;
+
+/**
+ * \brief Slice parameter for JPEG decoding.
+ *
+ * This structure holds information from the scan header, along with
+ * definitions from additional segments. The associated slice data
+ * buffer holds all entropy coded segments (ECS) in the scan.
+ */
+typedef struct _VASliceParameterBufferJPEGBaseline {
+    /** @name Codec-independent Slice Parameter Buffer base. */
+    /**@{*/
+    /** \brief Number of bytes in the slice data buffer for this slice. */
+    uint32_t        slice_data_size;
+    /** \brief The offset to the first byte of the first MCU. */
+    uint32_t        slice_data_offset;
+    /** \brief Slice data buffer flags. See \c VA_SLICE_DATA_FLAG_xxx. */
+    uint32_t        slice_data_flag;
+    /**@}*/
+
+    /** \brief Scan horizontal position. */
+    uint32_t        slice_horizontal_position;
+    /** \brief Scan vertical position. */
+    uint32_t        slice_vertical_position;
+
+    struct {
+        /** \brief Scan component selector (Csj). */
+        uint8_t   component_selector;
+        /** \brief DC entropy coding table selector (Tdj). */
+        uint8_t   dc_table_selector;
+        /** \brief AC entropy coding table selector (Taj). */
+        uint8_t   ac_table_selector;
+    }                   components[4];
+    /** \brief Number of components in scan (Ns). */
+    uint8_t       num_components;
+
+    /** \brief Restart interval definition (Ri). */
+    uint16_t      restart_interval;
+    /** \brief Number of MCUs in a scan. */
+    uint32_t        num_mcus;
+
+    /** \brief Reserved bytes for future use, must be zero */
+    uint32_t                va_reserved[VA_PADDING_LOW];
+} VASliceParameterBufferJPEGBaseline;
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* VA_DEC_JPEG_H */