summaryrefslogtreecommitdiff
path: root/quantum/painter/qp_draw_image.c
blob: e722f3cf029014b1b78c9eee98f423e549f552d1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
// Copyright 2021-2023 Nick Brassel (@tzarc)
// SPDX-License-Identifier: GPL-2.0-or-later

#include "qp_internal.h"
#include "qp_draw.h"
#include "qp_comms.h"
#include "qgf.h"
#include "deferred_exec.h"

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// QGF image handles

typedef struct qgf_image_handle_t {
    painter_image_desc_t base;
    bool                 validate_ok;
    union {
        qp_stream_t        stream;
        qp_memory_stream_t mem_stream;
#ifdef QP_STREAM_HAS_FILE_IO
        qp_file_stream_t file_stream;
#endif // QP_STREAM_HAS_FILE_IO
    };
} qgf_image_handle_t;

static qgf_image_handle_t image_descriptors[QUANTUM_PAINTER_NUM_IMAGES] = {0};

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Helper: load image from stream

static painter_image_handle_t qp_load_image_internal(bool (*stream_factory)(qgf_image_handle_t *image, void *arg), void *arg) {
    qp_dprintf("qp_load_image: entry\n");
    qgf_image_handle_t *image = NULL;

    // Find a free slot
    for (int i = 0; i < QUANTUM_PAINTER_NUM_IMAGES; ++i) {
        if (!image_descriptors[i].validate_ok) {
            image = &image_descriptors[i];
            break;
        }
    }

    // Drop out if not found
    if (!image) {
        qp_dprintf("qp_load_image: fail (no free slot)\n");
        return NULL;
    }

    if (!stream_factory(image, arg)) {
        qp_dprintf("qp_load_image: fail (could not create stream)\n");
        return NULL;
    }

    // Now that we know the length, validate the input data
    if (!qgf_validate_stream(&image->stream)) {
        qp_dprintf("qp_load_image: fail (failed validation)\n");
        return NULL;
    }

    // Fill out the QP image descriptor
    qgf_read_graphics_descriptor(&image->stream, &image->base.width, &image->base.height, &image->base.frame_count, NULL);

    // Validation success, we can return the handle
    image->validate_ok = true;
    qp_dprintf("qp_load_image: ok\n");
    return (painter_image_handle_t)image;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter External API: qp_load_image_mem

static inline bool image_mem_stream_factory(qgf_image_handle_t *image, void *arg) {
    void *buffer = arg;

    // Assume we can read the graphics descriptor
    image->mem_stream = qp_make_memory_stream((void *)buffer, sizeof(qgf_graphics_descriptor_v1_t));

    // Update the length of the stream to match, and rewind to the start
    image->mem_stream.length   = qgf_get_total_size(&image->stream);
    image->mem_stream.position = 0;

    return true;
}

painter_image_handle_t qp_load_image_mem(const void *buffer) {
    return qp_load_image_internal(image_mem_stream_factory, (void *)buffer);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter External API: qp_close_image

bool qp_close_image(painter_image_handle_t image) {
    qgf_image_handle_t *qgf_image = (qgf_image_handle_t *)image;
    if (!qgf_image->validate_ok) {
        qp_dprintf("qp_close_image: fail (invalid image)\n");
        return false;
    }

    // Free up this image for use elsewhere.
    qgf_image->validate_ok = false;
    qp_stream_close(&qgf_image->stream);
    return true;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter External API: qp_drawimage

bool qp_drawimage(painter_device_t device, uint16_t x, uint16_t y, painter_image_handle_t image) {
    return qp_drawimage_recolor(device, x, y, image, 0, 0, 255, 0, 0, 0);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter External API: qp_drawimage_recolor

typedef struct qgf_frame_info_t {
    painter_compression_t compression_scheme;
    uint8_t               bpp;
    bool                  has_palette;
    bool                  is_delta;
    uint16_t              left;
    uint16_t              top;
    uint16_t              right;
    uint16_t              bottom;
    uint16_t              delay;
} qgf_frame_info_t;

static bool qp_drawimage_prepare_frame_for_stream_read(painter_device_t device, qgf_image_handle_t *qgf_image, uint16_t frame_number, qp_pixel_t fg_hsv888, qp_pixel_t bg_hsv888, qgf_frame_info_t *info) {
    struct painter_driver_t *driver = (struct painter_driver_t *)device;

    // Drop out if we can't actually place the data we read out anywhere
    if (!info) {
        qp_dprintf("Failed to prepare stream for read, output info buffer unavailable\n");
        return false;
    }

    // Seek to the frame
    qgf_seek_to_frame_descriptor(&qgf_image->stream, frame_number);

    // Read the frame descriptor
    qgf_frame_v1_t frame_descriptor;
    if (qp_stream_read(&frame_descriptor, sizeof(qgf_frame_v1_t), 1, &qgf_image->stream) != 1) {
        qp_dprintf("Failed to read frame_descriptor, expected length was not %d\n", (int)sizeof(qgf_frame_v1_t));
        return false;
    }

    // Parse out the frame info
    if (!qgf_parse_frame_descriptor(&frame_descriptor, &info->bpp, &info->has_palette, &info->is_delta, &info->compression_scheme, &info->delay)) {
        return false;
    }

    // Ensure we aren't reusing any palette
    qp_internal_invalidate_palette();

    if (!qp_internal_bpp_capable(info->bpp)) {
        qp_dprintf("qp_drawimage_recolor: fail (image bpp too high (%d), check QUANTUM_PAINTER_SUPPORTS_256_PALETTE or QUANTUM_PAINTER_SUPPORTS_NATIVE_COLORS)\n", (int)info->bpp);
        qp_comms_stop(device);
        return false;
    }

    // Handle palette if needed
    const uint16_t palette_entries  = 1u << info->bpp;
    bool           needs_pixconvert = false;
    if (info->has_palette) {
        // Load the palette from the stream
        if (!qp_internal_load_qgf_palette((qp_stream_t *)&qgf_image->stream, info->bpp)) {
            return false;
        }

        needs_pixconvert = true;
    } else {
        if (info->bpp <= 8) {
            // Interpolate from fg/bg
            needs_pixconvert = qp_internal_interpolate_palette(fg_hsv888, bg_hsv888, palette_entries);
        }
    }

    if (needs_pixconvert) {
        // Convert the palette to native format
        if (!driver->driver_vtable->palette_convert(device, palette_entries, qp_internal_global_pixel_lookup_table)) {
            qp_dprintf("qp_drawimage_recolor: fail (could not convert pixels to native)\n");
            qp_comms_stop(device);
            return false;
        }
    }

    // Handle delta if needed
    if (info->is_delta) {
        qgf_delta_v1_t delta_descriptor;
        if (qp_stream_read(&delta_descriptor, sizeof(qgf_delta_v1_t), 1, &qgf_image->stream) != 1) {
            qp_dprintf("Failed to read delta_descriptor, expected length was not %d\n", (int)sizeof(qgf_delta_v1_t));
            return false;
        }

        info->left   = delta_descriptor.left;
        info->top    = delta_descriptor.top;
        info->right  = delta_descriptor.right;
        info->bottom = delta_descriptor.bottom;
    }

    // Read the data block
    qgf_data_v1_t data_descriptor;
    if (qp_stream_read(&data_descriptor, sizeof(qgf_data_v1_t), 1, &qgf_image->stream) != 1) {
        qp_dprintf("Failed to read data_descriptor, expected length was not %d\n", (int)sizeof(qgf_data_v1_t));
        return false;
    }

    // Stream is now at the point of being able to read pixdata
    return true;
}

static bool qp_drawimage_recolor_impl(painter_device_t device, uint16_t x, uint16_t y, painter_image_handle_t image, int frame_number, qgf_frame_info_t *frame_info, qp_pixel_t fg_hsv888, qp_pixel_t bg_hsv888) {
    qp_dprintf("qp_drawimage_recolor: entry\n");
    struct painter_driver_t *driver = (struct painter_driver_t *)device;
    if (!driver->validate_ok) {
        qp_dprintf("qp_drawimage_recolor: fail (validation_ok == false)\n");
        return false;
    }

    qgf_image_handle_t *qgf_image = (qgf_image_handle_t *)image;
    if (!qgf_image->validate_ok) {
        qp_dprintf("qp_drawimage_recolor: fail (invalid image)\n");
        return false;
    }

    // Read the frame info
    if (!qp_drawimage_prepare_frame_for_stream_read(device, qgf_image, frame_number, fg_hsv888, bg_hsv888, frame_info)) {
        qp_dprintf("qp_drawimage_recolor: fail (could not read frame %d)\n", frame_number);
        return false;
    }

    if (!qp_comms_start(device)) {
        qp_dprintf("qp_drawimage_recolor: fail (could not start comms)\n");
        return false;
    }

    uint16_t l, t, r, b;
    if (frame_info->is_delta) {
        l = x + frame_info->left;
        t = y + frame_info->top;
        r = x + frame_info->right - 1;
        b = y + frame_info->bottom - 1;
    } else {
        l = x;
        t = y;
        r = x + image->width - 1;
        b = y + image->height - 1;
    }
    uint32_t pixel_count = ((uint32_t)(r - l + 1)) * (b - t + 1);

    // Configure where we're going to be rendering to
    if (!driver->driver_vtable->viewport(device, l, t, r, b)) {
        qp_dprintf("qp_drawimage_recolor: fail (could not set viewport)\n");
        qp_comms_stop(device);
        return false;
    }

    // Set up the input state
    struct qp_internal_byte_input_state input_state    = {.device = device, .src_stream = &qgf_image->stream};
    qp_internal_byte_input_callback     input_callback = qp_internal_prepare_input_state(&input_state, frame_info->compression_scheme);
    if (input_callback == NULL) {
        qp_dprintf("qp_drawimage_recolor: fail (invalid image compression scheme)\n");
        qp_comms_stop(device);
        return false;
    }

    bool ret = false;
    if (frame_info->bpp <= 8) {
        // Set up the output state
        struct qp_internal_pixel_output_state output_state = {.device = device, .pixel_write_pos = 0, .max_pixels = qp_internal_num_pixels_in_buffer(device)};

        // Decode the pixel data and stream to the display
        ret = qp_internal_decode_palette(device, pixel_count, frame_info->bpp, input_callback, &input_state, qp_internal_global_pixel_lookup_table, qp_internal_pixel_appender, &output_state);
        // Any leftovers need transmission as well.
        if (ret && output_state.pixel_write_pos > 0) {
            ret &= driver->driver_vtable->pixdata(device, qp_internal_global_pixdata_buffer, output_state.pixel_write_pos);
        }
    } else {
        // Set up the output state
        struct qp_internal_byte_output_state output_state = {.device = device, .byte_write_pos = 0, .max_bytes = qp_internal_num_pixels_in_buffer(device) * driver->native_bits_per_pixel / 8};

        // Stream the raw pixel data to the display
        uint32_t byte_count = pixel_count * frame_info->bpp / 8;
        ret                 = qp_internal_send_bytes(device, byte_count, input_callback, &input_state, qp_internal_byte_appender, &output_state);
        // Any leftovers need transmission as well.
        if (ret && output_state.byte_write_pos > 0) {
            ret &= driver->driver_vtable->pixdata(device, qp_internal_global_pixdata_buffer, output_state.byte_write_pos * 8 / driver->native_bits_per_pixel);
        }
    }

    qp_dprintf("qp_drawimage_recolor: %s\n", ret ? "ok" : "fail");
    qp_comms_stop(device);
    return ret;
}

bool qp_drawimage_recolor(painter_device_t device, uint16_t x, uint16_t y, painter_image_handle_t image, uint8_t hue_fg, uint8_t sat_fg, uint8_t val_fg, uint8_t hue_bg, uint8_t sat_bg, uint8_t val_bg) {
    qgf_frame_info_t frame_info = {0};
    qp_pixel_t       fg_hsv888  = {.hsv888 = {.h = hue_fg, .s = sat_fg, .v = val_fg}};
    qp_pixel_t       bg_hsv888  = {.hsv888 = {.h = hue_bg, .s = sat_bg, .v = val_bg}};
    return qp_drawimage_recolor_impl(device, x, y, image, 0, &frame_info, fg_hsv888, bg_hsv888);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter External API: qp_animate

deferred_token qp_animate(painter_device_t device, uint16_t x, uint16_t y, painter_image_handle_t image) {
    return qp_animate_recolor(device, x, y, image, 0, 0, 255, 0, 0, 0);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter External API: qp_animate_recolor

typedef struct animation_state_t {
    painter_device_t       device;
    uint16_t               x;
    uint16_t               y;
    painter_image_handle_t image;
    qp_pixel_t             fg_hsv888;
    qp_pixel_t             bg_hsv888;
    uint16_t               frame_number;
    deferred_token         defer_token;
} animation_state_t;

static deferred_executor_t animation_executors[QUANTUM_PAINTER_CONCURRENT_ANIMATIONS] = {0};
static animation_state_t   animation_states[QUANTUM_PAINTER_CONCURRENT_ANIMATIONS]    = {0};

static deferred_token qp_render_animation_state(animation_state_t *state, uint16_t *delay_ms) {
    qgf_frame_info_t frame_info = {0};
    qp_dprintf("qp_render_animation_state: entry (frame #%d)\n", (int)state->frame_number);
    bool ret = qp_drawimage_recolor_impl(state->device, state->x, state->y, state->image, state->frame_number, &frame_info, state->fg_hsv888, state->bg_hsv888);
    if (ret) {
        ++state->frame_number;
        if (state->frame_number >= state->image->frame_count) {
            state->frame_number = 0;
        }
        *delay_ms = frame_info.delay;
    }
    qp_dprintf("qp_render_animation_state: %s (delay %dms)\n", ret ? "ok" : "fail", (int)(*delay_ms));
    return ret;
}

static uint32_t animation_callback(uint32_t trigger_time, void *cb_arg) {
    animation_state_t *state = (animation_state_t *)cb_arg;
    uint16_t           delay_ms;
    bool               ret = qp_render_animation_state(state, &delay_ms);
    if (!ret) {
        // Setting the device to NULL clears the animation slot
        state->device = NULL;
    }
    // If we're successful, keep animating -- returning 0 cancels the deferred execution
    return ret ? delay_ms : 0;
}

deferred_token qp_animate_recolor(painter_device_t device, uint16_t x, uint16_t y, painter_image_handle_t image, uint8_t hue_fg, uint8_t sat_fg, uint8_t val_fg, uint8_t hue_bg, uint8_t sat_bg, uint8_t val_bg) {
    qp_dprintf("qp_animate_recolor: entry\n");

    animation_state_t *anim_state = NULL;
    for (int i = 0; i < QUANTUM_PAINTER_CONCURRENT_ANIMATIONS; ++i) {
        if (animation_states[i].device == NULL) {
            anim_state = &animation_states[i];
            break;
        }
    }

    if (!anim_state) {
        qp_dprintf("qp_animate_recolor: fail (could not find free animation slot)\n");
        return INVALID_DEFERRED_TOKEN;
    }

    // Prepare the animation state
    anim_state->device       = device;
    anim_state->x            = x;
    anim_state->y            = y;
    anim_state->image        = image;
    anim_state->fg_hsv888    = (qp_pixel_t){.hsv888 = {.h = hue_fg, .s = sat_fg, .v = val_fg}};
    anim_state->bg_hsv888    = (qp_pixel_t){.hsv888 = {.h = hue_bg, .s = sat_bg, .v = val_bg}};
    anim_state->frame_number = 0;

    // Draw the first frame
    uint16_t delay_ms;
    if (!qp_render_animation_state(anim_state, &delay_ms)) {
        anim_state->device = NULL; // disregard the allocated animation slot
        qp_dprintf("qp_animate_recolor: fail (could not render first frame)\n");
        return INVALID_DEFERRED_TOKEN;
    }

    // Set up the timer
    anim_state->defer_token = defer_exec_advanced(animation_executors, QUANTUM_PAINTER_CONCURRENT_ANIMATIONS, delay_ms, animation_callback, anim_state);
    if (anim_state->defer_token == INVALID_DEFERRED_TOKEN) {
        anim_state->device = NULL; // disregard the allocated animation slot
        qp_dprintf("qp_animate_recolor: fail (could not set up animation executor)\n");
        return INVALID_DEFERRED_TOKEN;
    }

    qp_dprintf("qp_animate_recolor: ok (deferred token = %d)\n", (int)anim_state->defer_token);
    return anim_state->defer_token;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter External API: qp_stop_animation

void qp_stop_animation(deferred_token anim_token) {
    for (int i = 0; i < QUANTUM_PAINTER_CONCURRENT_ANIMATIONS; ++i) {
        if (animation_states[i].defer_token == anim_token) {
            cancel_deferred_exec_advanced(animation_executors, QUANTUM_PAINTER_CONCURRENT_ANIMATIONS, anim_token);
            animation_states[i].device = NULL;
            return;
        }
    }
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter Core API: qp_internal_animation_tick

void qp_internal_animation_tick(void) {
    static uint32_t last_anim_exec = 0;
    deferred_exec_advanced_task(animation_executors, QUANTUM_PAINTER_CONCURRENT_ANIMATIONS, &last_anim_exec);
}