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Diffstat (limited to 'drivers/media/video/s5p-jpeg/jpeg-core.h')
| -rw-r--r-- | drivers/media/video/s5p-jpeg/jpeg-core.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/drivers/media/video/s5p-jpeg/jpeg-core.h b/drivers/media/video/s5p-jpeg/jpeg-core.h new file mode 100644 index 00000000000..facad6114f5 --- /dev/null +++ b/drivers/media/video/s5p-jpeg/jpeg-core.h @@ -0,0 +1,143 @@ +/* linux/drivers/media/video/s5p-jpeg/jpeg-core.h + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef JPEG_CORE_H_ +#define JPEG_CORE_H_ + +#include <media/v4l2-device.h> + +#define S5P_JPEG_M2M_NAME "s5p-jpeg" + +/* JPEG compression quality setting */ +#define S5P_JPEG_COMPR_QUAL_BEST 0 +#define S5P_JPEG_COMPR_QUAL_WORST 3 + +/* JPEG RGB to YCbCr conversion matrix coefficients */ +#define S5P_JPEG_COEF11 0x4d +#define S5P_JPEG_COEF12 0x97 +#define S5P_JPEG_COEF13 0x1e +#define S5P_JPEG_COEF21 0x2c +#define S5P_JPEG_COEF22 0x57 +#define S5P_JPEG_COEF23 0x83 +#define S5P_JPEG_COEF31 0x83 +#define S5P_JPEG_COEF32 0x6e +#define S5P_JPEG_COEF33 0x13 + +/* a selection of JPEG markers */ +#define TEM 0x01 +#define SOF0 0xc0 +#define RST 0xd0 +#define SOI 0xd8 +#define EOI 0xd9 +#define DHP 0xde + +/* Flags that indicate a format can be used for capture/output */ +#define MEM2MEM_CAPTURE (1 << 0) +#define MEM2MEM_OUTPUT (1 << 1) + +/** + * struct s5p_jpeg - JPEG IP abstraction + * @lock: the mutex protecting this structure + * @v4l2_dev: v4l2 device for mem2mem mode + * @vfd_encoder: video device node for encoder mem2mem mode + * @vfd_decoder: video device node for decoder mem2mem mode + * @m2m_dev: v4l2 mem2mem device data + * @ioarea: JPEG IP memory region + * @regs: JPEG IP registers mapping + * @irq: JPEG IP irq + * @clk: JPEG IP clock + * @dev: JPEG IP struct device + * @alloc_ctx: videobuf2 memory allocator's context + */ +struct s5p_jpeg { + struct mutex lock; + + struct v4l2_device v4l2_dev; + struct video_device *vfd_encoder; + struct video_device *vfd_decoder; + struct v4l2_m2m_dev *m2m_dev; + + struct resource *ioarea; + void __iomem *regs; + unsigned int irq; + struct clk *clk; + struct device *dev; + void *alloc_ctx; +}; + +/** + * struct jpeg_fmt - driver's internal color format data + * @name: format descritpion + * @fourcc: the fourcc code, 0 if not applicable + * @depth: number of bits per pixel + * @colplanes: number of color planes (1 for packed formats) + * @h_align: horizontal alignment order (align to 2^h_align) + * @v_align: vertical alignment order (align to 2^v_align) + * @types: types of queue this format is applicable to + */ +struct s5p_jpeg_fmt { + char *name; + u32 fourcc; + int depth; + int colplanes; + int h_align; + int v_align; + u32 types; +}; + +/** + * s5p_jpeg_q_data - parameters of one queue + * @fmt: driver-specific format of this queue + * @w: image width + * @h: image height + * @size: image buffer size in bytes + */ +struct s5p_jpeg_q_data { + struct s5p_jpeg_fmt *fmt; + u32 w; + u32 h; + u32 size; +}; + +/** + * s5p_jpeg_ctx - the device context data + * @jpeg: JPEG IP device for this context + * @mode: compression (encode) operation or decompression (decode) + * @compr_quality: destination image quality in compression (encode) mode + * @m2m_ctx: mem2mem device context + * @out_q: source (output) queue information + * @cap_fmt: destination (capture) queue queue information + * @hdr_parsed: set if header has been parsed during decompression + */ +struct s5p_jpeg_ctx { + struct s5p_jpeg *jpeg; + unsigned int mode; + unsigned int compr_quality; + struct v4l2_m2m_ctx *m2m_ctx; + struct s5p_jpeg_q_data out_q; + struct s5p_jpeg_q_data cap_q; + bool hdr_parsed; +}; + +/** + * s5p_jpeg_buffer - description of memory containing input JPEG data + * @size: buffer size + * @curr: current position in the buffer + * @data: pointer to the data + */ +struct s5p_jpeg_buffer { + unsigned long size; + unsigned long curr; + unsigned long data; +}; + +#endif /* JPEG_CORE_H */ |