| Andrzej Pietrasiewicz | bb677f3 | 2011-11-24 11:15:23 -0300 | [diff] [blame^] | 1 | /* linux/drivers/media/video/s5p-jpeg/jpeg-core.h |
| 2 | * |
| 3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com |
| 5 | * |
| 6 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #ifndef JPEG_CORE_H_ |
| 14 | #define JPEG_CORE_H_ |
| 15 | |
| 16 | #include <media/v4l2-device.h> |
| 17 | |
| 18 | #define S5P_JPEG_M2M_NAME "s5p-jpeg" |
| 19 | |
| 20 | /* JPEG compression quality setting */ |
| 21 | #define S5P_JPEG_COMPR_QUAL_BEST 0 |
| 22 | #define S5P_JPEG_COMPR_QUAL_WORST 3 |
| 23 | |
| 24 | /* JPEG RGB to YCbCr conversion matrix coefficients */ |
| 25 | #define S5P_JPEG_COEF11 0x4d |
| 26 | #define S5P_JPEG_COEF12 0x97 |
| 27 | #define S5P_JPEG_COEF13 0x1e |
| 28 | #define S5P_JPEG_COEF21 0x2c |
| 29 | #define S5P_JPEG_COEF22 0x57 |
| 30 | #define S5P_JPEG_COEF23 0x83 |
| 31 | #define S5P_JPEG_COEF31 0x83 |
| 32 | #define S5P_JPEG_COEF32 0x6e |
| 33 | #define S5P_JPEG_COEF33 0x13 |
| 34 | |
| 35 | /* a selection of JPEG markers */ |
| 36 | #define TEM 0x01 |
| 37 | #define SOF0 0xc0 |
| 38 | #define RST 0xd0 |
| 39 | #define SOI 0xd8 |
| 40 | #define EOI 0xd9 |
| 41 | #define DHP 0xde |
| 42 | |
| 43 | /* Flags that indicate a format can be used for capture/output */ |
| 44 | #define MEM2MEM_CAPTURE (1 << 0) |
| 45 | #define MEM2MEM_OUTPUT (1 << 1) |
| 46 | |
| 47 | /** |
| 48 | * struct s5p_jpeg - JPEG IP abstraction |
| 49 | * @lock: the mutex protecting this structure |
| 50 | * @v4l2_dev: v4l2 device for mem2mem mode |
| 51 | * @vfd_encoder: video device node for encoder mem2mem mode |
| 52 | * @vfd_decoder: video device node for decoder mem2mem mode |
| 53 | * @m2m_dev: v4l2 mem2mem device data |
| 54 | * @ioarea: JPEG IP memory region |
| 55 | * @regs: JPEG IP registers mapping |
| 56 | * @irq: JPEG IP irq |
| 57 | * @clk: JPEG IP clock |
| 58 | * @dev: JPEG IP struct device |
| 59 | * @alloc_ctx: videobuf2 memory allocator's context |
| 60 | */ |
| 61 | struct s5p_jpeg { |
| 62 | struct mutex lock; |
| 63 | |
| 64 | struct v4l2_device v4l2_dev; |
| 65 | struct video_device *vfd_encoder; |
| 66 | struct video_device *vfd_decoder; |
| 67 | struct v4l2_m2m_dev *m2m_dev; |
| 68 | |
| 69 | struct resource *ioarea; |
| 70 | void __iomem *regs; |
| 71 | unsigned int irq; |
| 72 | struct clk *clk; |
| 73 | struct device *dev; |
| 74 | void *alloc_ctx; |
| 75 | }; |
| 76 | |
| 77 | /** |
| 78 | * struct jpeg_fmt - driver's internal color format data |
| 79 | * @name: format descritpion |
| 80 | * @fourcc: the fourcc code, 0 if not applicable |
| 81 | * @depth: number of bits per pixel |
| 82 | * @colplanes: number of color planes (1 for packed formats) |
| 83 | * @h_align: horizontal alignment order (align to 2^h_align) |
| 84 | * @v_align: vertical alignment order (align to 2^v_align) |
| 85 | * @types: types of queue this format is applicable to |
| 86 | */ |
| 87 | struct s5p_jpeg_fmt { |
| 88 | char *name; |
| 89 | u32 fourcc; |
| 90 | int depth; |
| 91 | int colplanes; |
| 92 | int h_align; |
| 93 | int v_align; |
| 94 | u32 types; |
| 95 | }; |
| 96 | |
| 97 | /** |
| 98 | * s5p_jpeg_q_data - parameters of one queue |
| 99 | * @fmt: driver-specific format of this queue |
| 100 | * @w: image width |
| 101 | * @h: image height |
| 102 | * @size: image buffer size in bytes |
| 103 | */ |
| 104 | struct s5p_jpeg_q_data { |
| 105 | struct s5p_jpeg_fmt *fmt; |
| 106 | u32 w; |
| 107 | u32 h; |
| 108 | u32 size; |
| 109 | }; |
| 110 | |
| 111 | /** |
| 112 | * s5p_jpeg_ctx - the device context data |
| 113 | * @jpeg: JPEG IP device for this context |
| 114 | * @mode: compression (encode) operation or decompression (decode) |
| 115 | * @compr_quality: destination image quality in compression (encode) mode |
| 116 | * @m2m_ctx: mem2mem device context |
| 117 | * @out_q: source (output) queue information |
| 118 | * @cap_fmt: destination (capture) queue queue information |
| 119 | * @hdr_parsed: set if header has been parsed during decompression |
| 120 | */ |
| 121 | struct s5p_jpeg_ctx { |
| 122 | struct s5p_jpeg *jpeg; |
| 123 | unsigned int mode; |
| 124 | unsigned int compr_quality; |
| 125 | struct v4l2_m2m_ctx *m2m_ctx; |
| 126 | struct s5p_jpeg_q_data out_q; |
| 127 | struct s5p_jpeg_q_data cap_q; |
| 128 | bool hdr_parsed; |
| 129 | }; |
| 130 | |
| 131 | /** |
| 132 | * s5p_jpeg_buffer - description of memory containing input JPEG data |
| 133 | * @size: buffer size |
| 134 | * @curr: current position in the buffer |
| 135 | * @data: pointer to the data |
| 136 | */ |
| 137 | struct s5p_jpeg_buffer { |
| 138 | unsigned long size; |
| 139 | unsigned long curr; |
| 140 | unsigned long data; |
| 141 | }; |
| 142 | |
| 143 | #endif /* JPEG_CORE_H */ |