Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Samsung TV Mixer driver |
| 3 | * |
| 4 | * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. |
| 5 | * |
| 6 | * Tomasz Stanislawski, <t.stanislaws@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 as published |
| 10 | * by the Free Software Foundiation. either version 2 of the License, |
| 11 | * or (at your option) any later version |
| 12 | */ |
| 13 | |
| 14 | #include "mixer.h" |
| 15 | |
| 16 | #include <media/videobuf2-dma-contig.h> |
| 17 | |
| 18 | /* FORMAT DEFINITIONS */ |
| 19 | |
| 20 | static const struct mxr_format mxr_fb_fmt_rgb565 = { |
| 21 | .name = "RGB565", |
| 22 | .fourcc = V4L2_PIX_FMT_RGB565, |
| 23 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 24 | .num_planes = 1, |
| 25 | .plane = { |
| 26 | { .width = 1, .height = 1, .size = 2 }, |
| 27 | }, |
| 28 | .num_subframes = 1, |
| 29 | .cookie = 4, |
| 30 | }; |
| 31 | |
| 32 | static const struct mxr_format mxr_fb_fmt_argb1555 = { |
| 33 | .name = "ARGB1555", |
| 34 | .num_planes = 1, |
| 35 | .fourcc = V4L2_PIX_FMT_RGB555, |
| 36 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 37 | .plane = { |
| 38 | { .width = 1, .height = 1, .size = 2 }, |
| 39 | }, |
| 40 | .num_subframes = 1, |
| 41 | .cookie = 5, |
| 42 | }; |
| 43 | |
| 44 | static const struct mxr_format mxr_fb_fmt_argb4444 = { |
| 45 | .name = "ARGB4444", |
| 46 | .num_planes = 1, |
| 47 | .fourcc = V4L2_PIX_FMT_RGB444, |
| 48 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 49 | .plane = { |
| 50 | { .width = 1, .height = 1, .size = 2 }, |
| 51 | }, |
| 52 | .num_subframes = 1, |
| 53 | .cookie = 6, |
| 54 | }; |
| 55 | |
| 56 | static const struct mxr_format mxr_fb_fmt_argb8888 = { |
| 57 | .name = "ARGB8888", |
| 58 | .fourcc = V4L2_PIX_FMT_BGR32, |
| 59 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 60 | .num_planes = 1, |
| 61 | .plane = { |
| 62 | { .width = 1, .height = 1, .size = 4 }, |
| 63 | }, |
| 64 | .num_subframes = 1, |
| 65 | .cookie = 7, |
| 66 | }; |
| 67 | |
| 68 | static const struct mxr_format *mxr_graph_format[] = { |
| 69 | &mxr_fb_fmt_rgb565, |
| 70 | &mxr_fb_fmt_argb1555, |
| 71 | &mxr_fb_fmt_argb4444, |
| 72 | &mxr_fb_fmt_argb8888, |
| 73 | }; |
| 74 | |
| 75 | /* AUXILIARY CALLBACKS */ |
| 76 | |
| 77 | static void mxr_graph_layer_release(struct mxr_layer *layer) |
| 78 | { |
| 79 | mxr_base_layer_unregister(layer); |
| 80 | mxr_base_layer_release(layer); |
| 81 | } |
| 82 | |
| 83 | static void mxr_graph_buffer_set(struct mxr_layer *layer, |
| 84 | struct mxr_buffer *buf) |
| 85 | { |
| 86 | dma_addr_t addr = 0; |
| 87 | |
| 88 | if (buf) |
Marek Szyprowski | ba7fcb0 | 2011-08-29 03:20:56 -0300 | [diff] [blame] | 89 | addr = vb2_dma_contig_plane_dma_addr(&buf->vb, 0); |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 90 | mxr_reg_graph_buffer(layer->mdev, layer->idx, addr); |
| 91 | } |
| 92 | |
| 93 | static void mxr_graph_stream_set(struct mxr_layer *layer, int en) |
| 94 | { |
| 95 | mxr_reg_graph_layer_stream(layer->mdev, layer->idx, en); |
| 96 | } |
| 97 | |
| 98 | static void mxr_graph_format_set(struct mxr_layer *layer) |
| 99 | { |
| 100 | mxr_reg_graph_format(layer->mdev, layer->idx, |
| 101 | layer->fmt, &layer->geo); |
| 102 | } |
| 103 | |
Tomasz Stanislawski | 0d066d3 | 2011-08-25 07:14:26 -0300 | [diff] [blame] | 104 | static inline unsigned int closest(unsigned int x, unsigned int a, |
| 105 | unsigned int b, unsigned long flags) |
| 106 | { |
| 107 | unsigned int mid = (a + b) / 2; |
| 108 | |
| 109 | /* choosing closest value with constraints according to table: |
| 110 | * -------------+-----+-----+-----+-------+ |
| 111 | * flags | 0 | LE | GE | LE|GE | |
| 112 | * -------------+-----+-----+-----+-------+ |
| 113 | * x <= a | a | a | a | a | |
| 114 | * a < x <= mid | a | a | b | a | |
| 115 | * mid < x < b | b | a | b | b | |
| 116 | * b <= x | b | b | b | b | |
| 117 | * -------------+-----+-----+-----+-------+ |
| 118 | */ |
| 119 | |
| 120 | /* remove all non-constraint flags */ |
| 121 | flags &= V4L2_SEL_FLAG_LE | V4L2_SEL_FLAG_GE; |
| 122 | |
| 123 | if (x <= a) |
| 124 | return a; |
| 125 | if (x >= b) |
| 126 | return b; |
| 127 | if (flags == V4L2_SEL_FLAG_LE) |
| 128 | return a; |
| 129 | if (flags == V4L2_SEL_FLAG_GE) |
| 130 | return b; |
| 131 | if (x <= mid) |
| 132 | return a; |
| 133 | return b; |
| 134 | } |
| 135 | |
| 136 | static inline unsigned int do_center(unsigned int center, |
| 137 | unsigned int size, unsigned int upper, unsigned int flags) |
| 138 | { |
| 139 | unsigned int lower; |
| 140 | |
| 141 | if (flags & MXR_NO_OFFSET) |
| 142 | return 0; |
| 143 | |
| 144 | lower = center - min(center, size / 2); |
| 145 | return min(lower, upper - size); |
| 146 | } |
| 147 | |
| 148 | static void mxr_graph_fix_geometry(struct mxr_layer *layer, |
| 149 | enum mxr_geometry_stage stage, unsigned long flags) |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 150 | { |
| 151 | struct mxr_geometry *geo = &layer->geo; |
Tomasz Stanislawski | 0d066d3 | 2011-08-25 07:14:26 -0300 | [diff] [blame] | 152 | struct mxr_crop *src = &geo->src; |
| 153 | struct mxr_crop *dst = &geo->dst; |
| 154 | unsigned int x_center, y_center; |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 155 | |
Tomasz Stanislawski | 0d066d3 | 2011-08-25 07:14:26 -0300 | [diff] [blame] | 156 | switch (stage) { |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 157 | |
Tomasz Stanislawski | 0d066d3 | 2011-08-25 07:14:26 -0300 | [diff] [blame] | 158 | case MXR_GEOMETRY_SINK: /* nothing to be fixed here */ |
| 159 | flags = 0; |
| 160 | /* fall through */ |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 161 | |
Tomasz Stanislawski | 0d066d3 | 2011-08-25 07:14:26 -0300 | [diff] [blame] | 162 | case MXR_GEOMETRY_COMPOSE: |
| 163 | /* remember center of the area */ |
| 164 | x_center = dst->x_offset + dst->width / 2; |
| 165 | y_center = dst->y_offset + dst->height / 2; |
| 166 | /* round up/down to 2 multiple depending on flags */ |
| 167 | if (flags & V4L2_SEL_FLAG_LE) { |
| 168 | dst->width = round_down(dst->width, 2); |
| 169 | dst->height = round_down(dst->height, 2); |
| 170 | } else { |
| 171 | dst->width = round_up(dst->width, 2); |
| 172 | dst->height = round_up(dst->height, 2); |
| 173 | } |
| 174 | /* assure that compose rect is inside display area */ |
| 175 | dst->width = min(dst->width, dst->full_width); |
| 176 | dst->height = min(dst->height, dst->full_height); |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 177 | |
Tomasz Stanislawski | 0d066d3 | 2011-08-25 07:14:26 -0300 | [diff] [blame] | 178 | /* ensure that compose is reachable using 2x scaling */ |
| 179 | dst->width = min(dst->width, 2 * src->full_width); |
| 180 | dst->height = min(dst->height, 2 * src->full_height); |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 181 | |
Tomasz Stanislawski | 0d066d3 | 2011-08-25 07:14:26 -0300 | [diff] [blame] | 182 | /* setup offsets */ |
| 183 | dst->x_offset = do_center(x_center, dst->width, |
| 184 | dst->full_width, flags); |
| 185 | dst->y_offset = do_center(y_center, dst->height, |
| 186 | dst->full_height, flags); |
| 187 | flags = 0; |
| 188 | /* fall through */ |
| 189 | |
| 190 | case MXR_GEOMETRY_CROP: |
| 191 | /* remember center of the area */ |
| 192 | x_center = src->x_offset + src->width / 2; |
| 193 | y_center = src->y_offset + src->height / 2; |
| 194 | /* ensure that cropping area lies inside the buffer */ |
| 195 | if (src->full_width < dst->width) |
| 196 | src->width = dst->width / 2; |
| 197 | else |
| 198 | src->width = closest(src->width, dst->width / 2, |
| 199 | dst->width, flags); |
| 200 | |
| 201 | if (src->width == dst->width) |
| 202 | geo->x_ratio = 0; |
| 203 | else |
| 204 | geo->x_ratio = 1; |
| 205 | |
| 206 | if (src->full_height < dst->height) |
| 207 | src->height = dst->height / 2; |
| 208 | else |
| 209 | src->height = closest(src->height, dst->height / 2, |
| 210 | dst->height, flags); |
| 211 | |
| 212 | if (src->height == dst->height) |
| 213 | geo->y_ratio = 0; |
| 214 | else |
| 215 | geo->y_ratio = 1; |
| 216 | |
| 217 | /* setup offsets */ |
| 218 | src->x_offset = do_center(x_center, src->width, |
| 219 | src->full_width, flags); |
| 220 | src->y_offset = do_center(y_center, src->height, |
| 221 | src->full_height, flags); |
| 222 | flags = 0; |
| 223 | /* fall through */ |
| 224 | case MXR_GEOMETRY_SOURCE: |
| 225 | src->full_width = clamp_val(src->full_width, |
| 226 | src->width + src->x_offset, 32767); |
| 227 | src->full_height = clamp_val(src->full_height, |
| 228 | src->height + src->y_offset, 2047); |
| 229 | }; |
Tomasz Stanislawski | fef1c8d | 2011-02-02 05:40:08 -0300 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | /* PUBLIC API */ |
| 233 | |
| 234 | struct mxr_layer *mxr_graph_layer_create(struct mxr_device *mdev, int idx) |
| 235 | { |
| 236 | struct mxr_layer *layer; |
| 237 | int ret; |
| 238 | struct mxr_layer_ops ops = { |
| 239 | .release = mxr_graph_layer_release, |
| 240 | .buffer_set = mxr_graph_buffer_set, |
| 241 | .stream_set = mxr_graph_stream_set, |
| 242 | .format_set = mxr_graph_format_set, |
| 243 | .fix_geometry = mxr_graph_fix_geometry, |
| 244 | }; |
| 245 | char name[32]; |
| 246 | |
| 247 | sprintf(name, "graph%d", idx); |
| 248 | |
| 249 | layer = mxr_base_layer_create(mdev, idx, name, &ops); |
| 250 | if (layer == NULL) { |
| 251 | mxr_err(mdev, "failed to initialize layer(%d) base\n", idx); |
| 252 | goto fail; |
| 253 | } |
| 254 | |
| 255 | layer->fmt_array = mxr_graph_format; |
| 256 | layer->fmt_array_size = ARRAY_SIZE(mxr_graph_format); |
| 257 | |
| 258 | ret = mxr_base_layer_register(layer); |
| 259 | if (ret) |
| 260 | goto fail_layer; |
| 261 | |
| 262 | return layer; |
| 263 | |
| 264 | fail_layer: |
| 265 | mxr_base_layer_release(layer); |
| 266 | |
| 267 | fail: |
| 268 | return NULL; |
| 269 | } |
| 270 | |