1088 lines
42 KiB
C
1088 lines
42 KiB
C
/*
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* graphics.c
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* Copyright (C) 2017 Kovid Goyal <kovid at kovidgoyal.net>
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*
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* Distributed under terms of the GPL3 license.
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*/
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#include "graphics.h"
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#include "state.h"
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#include "disk-cache.h"
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#include "iqsort.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <stdlib.h>
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#include <zlib.h>
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#include <structmember.h>
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#include "png-reader.h"
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PyTypeObject GraphicsManager_Type;
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#define STORAGE_LIMIT (320u * (1024u * 1024u))
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#define REPORT_ERROR(...) { log_error(__VA_ARGS__); }
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static bool send_to_gpu = true;
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GraphicsManager*
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grman_alloc() {
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GraphicsManager *self = (GraphicsManager *)GraphicsManager_Type.tp_alloc(&GraphicsManager_Type, 0);
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self->images_capacity = self->capacity = 64;
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self->images = calloc(self->images_capacity, sizeof(Image));
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self->render_data = calloc(self->capacity, sizeof(ImageRenderData));
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if (self->images == NULL || self->render_data == NULL) {
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PyErr_NoMemory();
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Py_CLEAR(self); return NULL;
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}
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self->disk_cache = create_disk_cache();
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if (!self->disk_cache) { Py_CLEAR(self); return NULL; }
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return self;
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}
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static inline void
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free_refs_data(Image *img) {
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free(img->refs); img->refs = NULL;
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img->refcnt = 0; img->refcap = 0;
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}
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static inline void
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free_load_data(LoadData *ld) {
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free(ld->buf); ld->buf_used = 0; ld->buf_capacity = 0;
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ld->buf = NULL;
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if (ld->mapped_file) munmap(ld->mapped_file, ld->mapped_file_sz);
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ld->mapped_file = NULL; ld->mapped_file_sz = 0;
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}
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static inline void
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free_image(GraphicsManager *self, Image *img) {
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if (img->texture_id) free_texture(&img->texture_id);
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free_refs_data(img);
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free_load_data(&(img->load_data));
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self->used_storage -= img->used_storage;
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}
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static void
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dealloc(GraphicsManager* self) {
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size_t i;
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if (self->images) {
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for (i = 0; i < self->image_count; i++) free_image(self, self->images + i);
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free(self->images);
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}
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free(self->render_data);
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Py_CLEAR(self->disk_cache);
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Py_TYPE(self)->tp_free((PyObject*)self);
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}
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static id_type internal_id_counter = 1;
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static inline Image*
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img_by_internal_id(GraphicsManager *self, id_type id) {
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for (size_t i = 0; i < self->image_count; i++) {
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if (self->images[i].internal_id == id) return self->images + i;
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}
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return NULL;
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}
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static inline Image*
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img_by_client_id(GraphicsManager *self, uint32_t id) {
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for (size_t i = 0; i < self->image_count; i++) {
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if (self->images[i].client_id == id) return self->images + i;
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}
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return NULL;
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}
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static inline Image*
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img_by_client_number(GraphicsManager *self, uint32_t number) {
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// get the newest image with the specified number
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for (size_t i = self->image_count; i-- > 0; ) {
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if (self->images[i].client_number == number) return self->images + i;
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}
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return NULL;
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}
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static inline void
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remove_image(GraphicsManager *self, size_t idx) {
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free_image(self, self->images + idx);
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remove_i_from_array(self->images, idx, self->image_count);
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self->layers_dirty = true;
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}
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static inline void
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remove_images(GraphicsManager *self, bool(*predicate)(Image*), id_type skip_image_internal_id) {
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for (size_t i = self->image_count; i-- > 0;) {
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Image *img = self->images + i;
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if (img->internal_id != skip_image_internal_id && predicate(img)) {
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remove_image(self, i);
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}
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}
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}
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// Loading image data {{{
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static bool
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trim_predicate(Image *img) {
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return !img->data_loaded || !img->refcnt;
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}
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static inline void
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apply_storage_quota(GraphicsManager *self, size_t storage_limit, id_type currently_added_image_internal_id) {
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// First remove unreferenced images, even if they have an id
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remove_images(self, trim_predicate, currently_added_image_internal_id);
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if (self->used_storage < storage_limit) return;
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#define oldest_last(a, b) ((b)->atime < (a)->atime)
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QSORT(Image, self->images, self->image_count, oldest_last)
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#undef oldest_last
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while (self->used_storage > storage_limit && self->image_count > 0) {
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remove_image(self, self->image_count - 1);
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}
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if (!self->image_count) self->used_storage = 0; // sanity check
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}
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static char command_response[512] = {0};
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static inline void
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set_command_failed_response(const char *code, const char *fmt, ...) {
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va_list args;
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va_start(args, fmt);
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const size_t sz = sizeof(command_response)/sizeof(command_response[0]);
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const int num = snprintf(command_response, sz, "%s:", code);
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vsnprintf(command_response + num, sz - num, fmt, args);
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va_end(args);
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}
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// Decode formats {{{
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#define ABRT(code, ...) { set_command_failed_response(#code, __VA_ARGS__); goto err; }
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static inline bool
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mmap_img_file(GraphicsManager UNUSED *self, Image *img, int fd, size_t sz, off_t offset) {
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if (!sz) {
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struct stat s;
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if (fstat(fd, &s) != 0) ABRT(EBADF, "Failed to fstat() the fd: %d file with error: [%d] %s", fd, errno, strerror(errno));
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sz = s.st_size;
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}
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void *addr = mmap(0, sz, PROT_READ, MAP_SHARED, fd, offset);
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if (addr == MAP_FAILED) ABRT(EBADF, "Failed to map image file fd: %d at offset: %zd with size: %zu with error: [%d] %s", fd, offset, sz, errno, strerror(errno));
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img->load_data.mapped_file = addr;
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img->load_data.mapped_file_sz = sz;
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return true;
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err:
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return false;
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}
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static inline const char*
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zlib_strerror(int ret) {
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#define Z(x) case x: return #x;
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static char buf[128];
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switch(ret) {
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case Z_ERRNO:
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return strerror(errno);
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default:
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snprintf(buf, sizeof(buf)/sizeof(buf[0]), "Unknown error: %d", ret);
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return buf;
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Z(Z_STREAM_ERROR);
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Z(Z_DATA_ERROR);
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Z(Z_MEM_ERROR);
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Z(Z_BUF_ERROR);
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Z(Z_VERSION_ERROR);
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}
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#undef Z
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}
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static inline bool
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inflate_zlib(Image *img, uint8_t *buf, size_t bufsz) {
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bool ok = false;
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z_stream z;
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uint8_t *decompressed = malloc(img->load_data.data_sz);
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if (decompressed == NULL) fatal("Out of memory allocating decompression buffer");
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z.zalloc = Z_NULL;
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z.zfree = Z_NULL;
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z.opaque = Z_NULL;
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z.avail_in = bufsz;
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z.next_in = (Bytef*)buf;
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z.avail_out = img->load_data.data_sz;
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z.next_out = decompressed;
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int ret;
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if ((ret = inflateInit(&z)) != Z_OK) ABRT(ENOMEM, "Failed to initialize inflate with error: %s", zlib_strerror(ret));
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if ((ret = inflate(&z, Z_FINISH)) != Z_STREAM_END) ABRT(EINVAL, "Failed to inflate image data with error: %s", zlib_strerror(ret));
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if (z.avail_out) ABRT(EINVAL, "Image data size post inflation does not match expected size");
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free_load_data(&img->load_data);
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img->load_data.buf_capacity = img->load_data.data_sz;
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img->load_data.buf = decompressed;
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img->load_data.buf_used = img->load_data.data_sz;
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ok = true;
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err:
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inflateEnd(&z);
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if (!ok) free(decompressed);
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return ok;
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}
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static void
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png_error_handler(const char *code, const char *msg) {
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set_command_failed_response(code, "%s", msg);
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}
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static inline bool
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inflate_png(Image *img, uint8_t *buf, size_t bufsz) {
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png_read_data d = {.err_handler=png_error_handler};
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inflate_png_inner(&d, buf, bufsz);
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if (d.ok) {
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free_load_data(&img->load_data);
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img->load_data.buf = d.decompressed;
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img->load_data.buf_capacity = d.sz;
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img->load_data.buf_used = d.sz;
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img->load_data.data_sz = d.sz;
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img->width = d.width; img->height = d.height;
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}
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else free(d.decompressed);
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free(d.row_pointers);
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return d.ok;
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}
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#undef ABRT
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// }}}
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static bool
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add_trim_predicate(Image *img) {
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return !img->data_loaded || (!img->client_id && !img->refcnt);
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}
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bool
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png_path_to_bitmap(const char* path, uint8_t** data, unsigned int* width, unsigned int* height, size_t* sz) {
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FILE* fp = fopen(path, "r");
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if (fp == NULL) {
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log_error("The PNG image: %s could not be opened with error: %s", path, strerror(errno));
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return false;
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}
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size_t capacity = 16*1024, pos = 0;
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unsigned char *buf = malloc(capacity);
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if (!buf) { log_error("Out of memory reading PNG file at: %s", path); fclose(fp); return false; }
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while (!feof(fp)) {
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if (pos - capacity < 1024) {
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capacity *= 2;
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unsigned char *new_buf = realloc(buf, capacity);
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if (!new_buf) {
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free(buf);
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log_error("Out of memory reading PNG file at: %s", path); fclose(fp); return false;
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}
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buf = new_buf;
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}
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pos += fread(buf + pos, sizeof(char), capacity - pos, fp);
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int saved_errno = errno;
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if (ferror(fp) && saved_errno != EINTR) {
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log_error("Failed while reading from file: %s with error: %s", path, strerror(saved_errno));
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fclose(fp);
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free(buf);
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return false;
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}
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}
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fclose(fp); fp = NULL;
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png_read_data d = {0};
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inflate_png_inner(&d, buf, pos);
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free(buf);
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if (!d.ok) {
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log_error("Failed to decode PNG image at: %s", path);
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return false;
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}
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*data = d.decompressed;
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*sz = d.sz;
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*height = d.height; *width = d.width;
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return true;
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}
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static inline Image*
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find_or_create_image(GraphicsManager *self, uint32_t id, bool *existing) {
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if (id) {
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for (size_t i = 0; i < self->image_count; i++) {
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if (self->images[i].client_id == id) {
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*existing = true;
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return self->images + i;
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}
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}
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}
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*existing = false;
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ensure_space_for(self, images, Image, self->image_count + 1, images_capacity, 64, true);
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Image *ans = self->images + self->image_count++;
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zero_at_ptr(ans);
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return ans;
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}
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static inline uint32_t
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get_free_client_id(const GraphicsManager *self) {
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if (!self->image_count) return 1;
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uint32_t *client_ids = malloc(sizeof(uint32_t) * self->image_count);
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size_t count = 0;
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for (size_t i = 0; i < self->image_count; i++) {
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Image *q = self->images + i;
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if (q->client_id) client_ids[count++] = q->client_id;
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}
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if (!count) { free(client_ids); return 1; }
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#define int_lt(a, b) ((*a)<(*b))
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QSORT(u_int32_t, client_ids, count, int_lt)
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#undef int_lt
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uint32_t prev_id = 0, ans = 1;
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for (size_t i = 0; i < count; i++) {
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if (client_ids[i] == prev_id) continue;
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prev_id = client_ids[i];
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if (client_ids[i] != ans) break;
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ans = client_ids[i] + 1;
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}
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free(client_ids);
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return ans;
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}
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#define ABRT(code, ...) { set_command_failed_response(#code, __VA_ARGS__); self->loading_image = 0; if (img) img->data_loaded = false; return NULL; }
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#define MAX_DATA_SZ (4u * 100000000u)
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enum FORMATS { RGB=24, RGBA=32, PNG=100 };
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static Image*
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load_image_data(GraphicsManager *self, Image *img, const GraphicsCommand *g, const unsigned char transmission_type, const uint32_t data_fmt, const uint8_t *payload) {
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int fd;
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static char fname[2056] = {0};
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switch(transmission_type) {
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case 'd': // direct
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if (img->load_data.buf_capacity - img->load_data.buf_used < g->payload_sz) {
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if (img->load_data.buf_used + g->payload_sz > MAX_DATA_SZ || data_fmt != PNG) ABRT(EFBIG, "Too much data");
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img->load_data.buf_capacity = MIN(2 * img->load_data.buf_capacity, MAX_DATA_SZ);
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img->load_data.buf = realloc(img->load_data.buf, img->load_data.buf_capacity);
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if (img->load_data.buf == NULL) {
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ABRT(ENOMEM, "Out of memory");
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img->load_data.buf_capacity = 0; img->load_data.buf_used = 0;
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}
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}
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memcpy(img->load_data.buf + img->load_data.buf_used, payload, g->payload_sz);
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img->load_data.buf_used += g->payload_sz;
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if (!g->more) { img->data_loaded = true; self->loading_image = 0; }
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break;
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case 'f': // file
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case 't': // temporary file
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case 's': // POSIX shared memory
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if (g->payload_sz > 2048) ABRT(EINVAL, "Filename too long");
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snprintf(fname, sizeof(fname)/sizeof(fname[0]), "%.*s", (int)g->payload_sz, payload);
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if (transmission_type == 's') fd = shm_open(fname, O_RDONLY, 0);
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else fd = open(fname, O_CLOEXEC | O_RDONLY);
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if (fd == -1) ABRT(EBADF, "Failed to open file for graphics transmission with error: [%d] %s", errno, strerror(errno));
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img->data_loaded = mmap_img_file(self, img, fd, g->data_sz, g->data_offset);
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safe_close(fd, __FILE__, __LINE__);
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if (transmission_type == 't') {
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if (global_state.boss) { call_boss(safe_delete_temp_file, "s", fname); }
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else unlink(fname);
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}
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else if (transmission_type == 's') shm_unlink(fname);
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if (!img->data_loaded) return NULL;
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break;
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default:
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ABRT(EINVAL, "Unknown transmission type: %c", g->transmission_type);
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}
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return img;
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}
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static Image*
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process_image_data(GraphicsManager *self, Image* img, const GraphicsCommand *g, unsigned char transmission_type, uint32_t data_fmt) {
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bool needs_processing = g->compressed || data_fmt == PNG;
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if (needs_processing) {
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uint8_t *buf; size_t bufsz;
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#define IB { if (img->load_data.buf) { buf = img->load_data.buf; bufsz = img->load_data.buf_used; } else { buf = img->load_data.mapped_file; bufsz = img->load_data.mapped_file_sz; } }
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switch(g->compressed) {
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case 'z':
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IB;
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if (!inflate_zlib(img, buf, bufsz)) {
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img->data_loaded = false; return NULL;
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}
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break;
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case 0:
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break;
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default:
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ABRT(EINVAL, "Unknown image compression: %c", g->compressed);
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}
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switch(data_fmt) {
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case PNG:
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IB;
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if (!inflate_png(img, buf, bufsz)) {
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img->data_loaded = false; return NULL;
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}
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break;
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default: break;
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}
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#undef IB
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img->load_data.data = img->load_data.buf;
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if (img->load_data.buf_used < img->load_data.data_sz) {
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ABRT(ENODATA, "Insufficient image data: %zu < %zu", img->load_data.buf_used, img->load_data.data_sz);
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}
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if (img->load_data.mapped_file) {
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munmap(img->load_data.mapped_file, img->load_data.mapped_file_sz);
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img->load_data.mapped_file = NULL; img->load_data.mapped_file_sz = 0;
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}
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} else {
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if (transmission_type == 'd') {
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if (img->load_data.buf_used < img->load_data.data_sz) {
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ABRT(ENODATA, "Insufficient image data: %zu < %zu", img->load_data.buf_used, img->load_data.data_sz);
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} else img->load_data.data = img->load_data.buf;
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} else {
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if (img->load_data.mapped_file_sz < img->load_data.data_sz) {
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ABRT(ENODATA, "Insufficient image data: %zu < %zu", img->load_data.mapped_file_sz, img->load_data.data_sz);
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} else img->load_data.data = img->load_data.mapped_file;
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}
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}
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return img;
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}
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static Image*
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handle_add_command(GraphicsManager *self, const GraphicsCommand *g, const uint8_t *payload, bool *is_dirty, uint32_t iid) {
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bool existing, init_img = true;
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Image *img = NULL;
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unsigned char tt = g->transmission_type ? g->transmission_type : 'd';
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uint32_t fmt = g->format ? g->format : RGBA;
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if (tt == 'd' && self->loading_image) init_img = false;
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if (init_img) {
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self->last_init_graphics_command = *g;
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self->last_init_graphics_command.id = iid;
|
|
self->loading_image = 0;
|
|
if (g->data_width > 10000 || g->data_height > 10000) ABRT(EINVAL, "Image too large");
|
|
remove_images(self, add_trim_predicate, 0);
|
|
img = find_or_create_image(self, iid, &existing);
|
|
if (existing) {
|
|
free_load_data(&img->load_data);
|
|
img->data_loaded = false;
|
|
free_refs_data(img);
|
|
*is_dirty = true;
|
|
self->layers_dirty = true;
|
|
} else {
|
|
img->internal_id = internal_id_counter++;
|
|
img->client_id = iid;
|
|
img->client_number = g->image_number;
|
|
if (!img->client_id && img->client_number) {
|
|
img->client_id = get_free_client_id(self);
|
|
self->last_init_graphics_command.id = img->client_id;
|
|
}
|
|
}
|
|
img->atime = monotonic(); img->used_storage = 0;
|
|
img->width = g->data_width; img->height = g->data_height;
|
|
switch(fmt) {
|
|
case PNG:
|
|
if (g->data_sz > MAX_DATA_SZ) ABRT(EINVAL, "PNG data size too large");
|
|
img->load_data.is_4byte_aligned = true;
|
|
img->load_data.is_opaque = false;
|
|
img->load_data.data_sz = g->data_sz ? g->data_sz : 1024 * 100;
|
|
break;
|
|
case RGB:
|
|
case RGBA:
|
|
img->load_data.data_sz = (size_t)g->data_width * g->data_height * (fmt / 8);
|
|
if (!img->load_data.data_sz) ABRT(EINVAL, "Zero width/height not allowed");
|
|
img->load_data.is_4byte_aligned = fmt == RGBA || (img->width % 4 == 0);
|
|
img->load_data.is_opaque = fmt == RGB;
|
|
break;
|
|
default:
|
|
ABRT(EINVAL, "Unknown image format: %u", fmt);
|
|
}
|
|
if (tt == 'd') {
|
|
if (g->more) self->loading_image = img->internal_id;
|
|
img->load_data.buf_capacity = img->load_data.data_sz + (g->compressed ? 1024 : 10); // compression header
|
|
img->load_data.buf = malloc(img->load_data.buf_capacity);
|
|
img->load_data.buf_used = 0;
|
|
if (img->load_data.buf == NULL) {
|
|
ABRT(ENOMEM, "Out of memory");
|
|
img->load_data.buf_capacity = 0; img->load_data.buf_used = 0;
|
|
}
|
|
}
|
|
} else {
|
|
self->last_init_graphics_command.more = g->more;
|
|
self->last_init_graphics_command.payload_sz = g->payload_sz;
|
|
g = &self->last_init_graphics_command;
|
|
tt = g->transmission_type ? g->transmission_type : 'd';
|
|
fmt = g->format ? g->format : RGBA;
|
|
img = img_by_internal_id(self, self->loading_image);
|
|
if (img == NULL) {
|
|
self->loading_image = 0;
|
|
ABRT(EILSEQ, "More payload loading refers to non-existent image");
|
|
}
|
|
}
|
|
img = load_image_data(self, img, g, tt, fmt, payload);
|
|
if (!img || !img->data_loaded) return NULL; // !data_loaded without an error implies chunked load
|
|
self->loading_image = 0;
|
|
img = process_image_data(self, img, g, tt, fmt);
|
|
if (!img) return NULL;
|
|
size_t required_sz = (size_t)(img->load_data.is_opaque ? 3 : 4) * img->width * img->height;
|
|
if (img->load_data.data_sz != required_sz) ABRT(EINVAL, "Image dimensions: %ux%u do not match data size: %zu, expected size: %zu", img->width, img->height, img->load_data.data_sz, required_sz);
|
|
if (LIKELY(img->data_loaded && send_to_gpu)) {
|
|
send_image_to_gpu(&img->texture_id, img->load_data.data, img->width, img->height, img->load_data.is_opaque, img->load_data.is_4byte_aligned, false, REPEAT_CLAMP);
|
|
free_load_data(&img->load_data);
|
|
self->used_storage += required_sz;
|
|
img->used_storage = required_sz;
|
|
}
|
|
return img;
|
|
#undef MAX_DATA_SZ
|
|
#undef ABRT
|
|
}
|
|
|
|
static inline const char*
|
|
finish_command_response(const GraphicsCommand *g, bool data_loaded, uint32_t iid, uint32_t placement_id, uint32_t image_number) {
|
|
static char rbuf[sizeof(command_response)/sizeof(command_response[0]) + 128];
|
|
bool is_ok_response = !command_response[0];
|
|
if (g->quiet) {
|
|
if (is_ok_response || g->quiet > 1) return NULL;
|
|
}
|
|
if (iid || image_number) {
|
|
if (is_ok_response) {
|
|
if (!data_loaded) return NULL;
|
|
snprintf(command_response, 10, "OK");
|
|
}
|
|
size_t pos = 0;
|
|
rbuf[pos++] = 'G';
|
|
#define print(fmt, ...) pos += snprintf(rbuf + pos, arraysz(rbuf) - 1 - pos, fmt, __VA_ARGS__)
|
|
if (iid) print("i=%u", iid);
|
|
if (image_number) print(",I=%u", image_number);
|
|
if (placement_id) print(",p=%u", placement_id);
|
|
print(";%s", command_response);
|
|
return rbuf;
|
|
#undef print
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
// }}}
|
|
|
|
// Displaying images {{{
|
|
|
|
static inline void
|
|
update_src_rect(ImageRef *ref, Image *img) {
|
|
// The src rect in OpenGL co-ords [0, 1] with origin at top-left corner of image
|
|
ref->src_rect.left = (float)ref->src_x / (float)img->width;
|
|
ref->src_rect.right = (float)(ref->src_x + ref->src_width) / (float)img->width;
|
|
ref->src_rect.top = (float)ref->src_y / (float)img->height;
|
|
ref->src_rect.bottom = (float)(ref->src_y + ref->src_height) / (float)img->height;
|
|
}
|
|
|
|
static inline void
|
|
update_dest_rect(ImageRef *ref, uint32_t num_cols, uint32_t num_rows, CellPixelSize cell) {
|
|
uint32_t t;
|
|
if (num_cols == 0) {
|
|
t = ref->src_width + ref->cell_x_offset;
|
|
num_cols = t / cell.width;
|
|
if (t > num_cols * cell.width) num_cols += 1;
|
|
}
|
|
if (num_rows == 0) {
|
|
t = ref->src_height + ref->cell_y_offset;
|
|
num_rows = t / cell.height;
|
|
if (t > num_rows * cell.height) num_rows += 1;
|
|
}
|
|
ref->effective_num_rows = num_rows;
|
|
ref->effective_num_cols = num_cols;
|
|
}
|
|
|
|
|
|
static uint32_t
|
|
handle_put_command(GraphicsManager *self, const GraphicsCommand *g, Cursor *c, bool *is_dirty, Image *img, CellPixelSize cell) {
|
|
if (img == NULL) {
|
|
if (g->id) img = img_by_client_id(self, g->id);
|
|
else if (g->image_number) img = img_by_client_number(self, g->image_number);
|
|
if (img == NULL) { set_command_failed_response("ENOENT", "Put command refers to non-existent image with id: %u and number: %u", g->id, g->image_number); return g->id; }
|
|
}
|
|
if (!img->data_loaded) { set_command_failed_response("ENOENT", "Put command refers to image with id: %u that could not load its data", g->id); return img->client_id; }
|
|
ensure_space_for(img, refs, ImageRef, img->refcnt + 1, refcap, 16, true);
|
|
*is_dirty = true;
|
|
self->layers_dirty = true;
|
|
ImageRef *ref = NULL;
|
|
if (g->placement_id && img->client_id) {
|
|
for (size_t i=0; i < img->refcnt; i++) {
|
|
if (img->refs[i].client_id == g->placement_id) {
|
|
ref = img->refs + i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (ref == NULL) {
|
|
ref = img->refs + img->refcnt++;
|
|
zero_at_ptr(ref);
|
|
}
|
|
img->atime = monotonic();
|
|
ref->src_x = g->x_offset; ref->src_y = g->y_offset; ref->src_width = g->width ? g->width : img->width; ref->src_height = g->height ? g->height : img->height;
|
|
ref->src_width = MIN(ref->src_width, img->width - (img->width > ref->src_x ? ref->src_x : img->width));
|
|
ref->src_height = MIN(ref->src_height, img->height - (img->height > ref->src_y ? ref->src_y : img->height));
|
|
ref->z_index = g->z_index;
|
|
ref->start_row = c->y; ref->start_column = c->x;
|
|
ref->cell_x_offset = MIN(g->cell_x_offset, cell.width - 1);
|
|
ref->cell_y_offset = MIN(g->cell_y_offset, cell.height - 1);
|
|
ref->num_cols = g->num_cells; ref->num_rows = g->num_lines;
|
|
if (img->client_id) ref->client_id = g->placement_id;
|
|
update_src_rect(ref, img);
|
|
update_dest_rect(ref, g->num_cells, g->num_lines, cell);
|
|
// Move the cursor, the screen will take care of ensuring it is in bounds
|
|
c->x += ref->effective_num_cols; c->y += ref->effective_num_rows - 1;
|
|
return img->client_id;
|
|
}
|
|
|
|
static inline void
|
|
set_vertex_data(ImageRenderData *rd, const ImageRef *ref, const ImageRect *dest_rect) {
|
|
#define R(n, a, b) rd->vertices[n*4] = ref->src_rect.a; rd->vertices[n*4 + 1] = ref->src_rect.b; rd->vertices[n*4 + 2] = dest_rect->a; rd->vertices[n*4 + 3] = dest_rect->b;
|
|
R(0, right, top); R(1, right, bottom); R(2, left, bottom); R(3, left, top);
|
|
#undef R
|
|
}
|
|
|
|
void
|
|
gpu_data_for_centered_image(ImageRenderData *ans, unsigned int screen_width_px, unsigned int screen_height_px, unsigned int width, unsigned int height) {
|
|
static const ImageRef source_rect = { .src_rect = { .left=0, .top=0, .bottom=1, .right=1 }};
|
|
const ImageRef *ref = &source_rect;
|
|
float width_frac = 2 * MIN(1, width / (float)screen_width_px), height_frac = 2 * MIN(1, height / (float)screen_height_px);
|
|
float hmargin = (2 - width_frac) / 2;
|
|
float vmargin = (2 - height_frac) / 2;
|
|
const ImageRect r = { .left = -1 + hmargin, .right = -1 + hmargin + width_frac, .top = 1 - vmargin, .bottom = 1 - vmargin - height_frac };
|
|
set_vertex_data(ans, ref, &r);
|
|
}
|
|
|
|
bool
|
|
grman_update_layers(GraphicsManager *self, unsigned int scrolled_by, float screen_left, float screen_top, float dx, float dy, unsigned int num_cols, unsigned int num_rows, CellPixelSize cell) {
|
|
if (self->last_scrolled_by != scrolled_by) self->layers_dirty = true;
|
|
self->last_scrolled_by = scrolled_by;
|
|
if (!self->layers_dirty) return false;
|
|
self->layers_dirty = false;
|
|
size_t i, j;
|
|
self->num_of_below_refs = 0;
|
|
self->num_of_negative_refs = 0;
|
|
self->num_of_positive_refs = 0;
|
|
Image *img; ImageRef *ref;
|
|
ImageRect r;
|
|
float screen_width = dx * num_cols, screen_height = dy * num_rows;
|
|
float screen_bottom = screen_top - screen_height;
|
|
float screen_width_px = num_cols * cell.width;
|
|
float screen_height_px = num_rows * cell.height;
|
|
float y0 = screen_top - dy * scrolled_by;
|
|
|
|
// Iterate over all visible refs and create render data
|
|
self->count = 0;
|
|
for (i = 0; i < self->image_count; i++) { img = self->images + i; for (j = 0; j < img->refcnt; j++) { ref = img->refs + j;
|
|
r.top = y0 - ref->start_row * dy - dy * (float)ref->cell_y_offset / (float)cell.height;
|
|
if (ref->num_rows > 0) r.bottom = y0 - (ref->start_row + (int32_t)ref->num_rows) * dy;
|
|
else r.bottom = r.top - screen_height * (float)ref->src_height / screen_height_px;
|
|
if (r.top <= screen_bottom || r.bottom >= screen_top) continue; // not visible
|
|
|
|
r.left = screen_left + ref->start_column * dx + dx * (float)ref->cell_x_offset / (float) cell.width;
|
|
if (ref->num_cols > 0) r.right = screen_left + (ref->start_column + (int32_t)ref->num_cols) * dx;
|
|
else r.right = r.left + screen_width * (float)ref->src_width / screen_width_px;
|
|
|
|
if (ref->z_index < ((int32_t)INT32_MIN/2))
|
|
self->num_of_below_refs++;
|
|
else if (ref->z_index < 0)
|
|
self->num_of_negative_refs++;
|
|
else
|
|
self->num_of_positive_refs++;
|
|
ensure_space_for(self, render_data, ImageRenderData, self->count + 1, capacity, 64, true);
|
|
ImageRenderData *rd = self->render_data + self->count;
|
|
zero_at_ptr(rd);
|
|
set_vertex_data(rd, ref, &r);
|
|
self->count++;
|
|
rd->z_index = ref->z_index; rd->image_id = img->internal_id;
|
|
rd->texture_id = img->texture_id;
|
|
}}
|
|
if (!self->count) return false;
|
|
// Sort visible refs in draw order (z-index, img)
|
|
#define lt(a, b) ( (a)->z_index < (b)->z_index || ((a)->z_index == (b)->z_index && (a)->image_id < (b)->image_id) )
|
|
QSORT(ImageRenderData, self->render_data, self->count, lt);
|
|
#undef lt
|
|
// Calculate the group counts
|
|
i = 0;
|
|
while (i < self->count) {
|
|
id_type image_id = self->render_data[i].image_id, start = i;
|
|
if (start == self->count - 1) i = self->count;
|
|
else {
|
|
while (i < self->count - 1 && self->render_data[++i].image_id == image_id) {}
|
|
}
|
|
self->render_data[start].group_count = i - start;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// }}}
|
|
|
|
// Image lifetime/scrolling {{{
|
|
|
|
static inline void
|
|
filter_refs(GraphicsManager *self, const void* data, bool free_images, bool (*filter_func)(const ImageRef*, Image*, const void*, CellPixelSize), CellPixelSize cell, bool only_first_image) {
|
|
bool matched = false;
|
|
for (size_t i = self->image_count; i-- > 0;) {
|
|
Image *img = self->images + i;
|
|
for (size_t j = img->refcnt; j-- > 0;) {
|
|
ImageRef *ref = img->refs + j;
|
|
if (filter_func(ref, img, data, cell)) {
|
|
remove_i_from_array(img->refs, j, img->refcnt);
|
|
self->layers_dirty = true;
|
|
matched = true;
|
|
}
|
|
}
|
|
if (img->refcnt == 0 && (free_images || img->client_id == 0)) remove_image(self, i);
|
|
if (only_first_image && matched) break;
|
|
}
|
|
}
|
|
|
|
|
|
static inline void
|
|
modify_refs(GraphicsManager *self, const void* data, bool free_images, bool (*filter_func)(ImageRef*, Image*, const void*, CellPixelSize), CellPixelSize cell) {
|
|
for (size_t i = self->image_count; i-- > 0;) {
|
|
Image *img = self->images + i;
|
|
for (size_t j = img->refcnt; j-- > 0;) {
|
|
if (filter_func(img->refs + j, img, data, cell)) remove_i_from_array(img->refs, j, img->refcnt);
|
|
}
|
|
if (img->refcnt == 0 && (free_images || img->client_id == 0)) remove_image(self, i);
|
|
}
|
|
}
|
|
|
|
|
|
static inline bool
|
|
scroll_filter_func(ImageRef *ref, Image UNUSED *img, const void *data, CellPixelSize cell UNUSED) {
|
|
ScrollData *d = (ScrollData*)data;
|
|
ref->start_row += d->amt;
|
|
return ref->start_row + (int32_t)ref->effective_num_rows <= d->limit;
|
|
}
|
|
|
|
static inline bool
|
|
ref_within_region(const ImageRef *ref, index_type margin_top, index_type margin_bottom) {
|
|
return ref->start_row >= (int32_t)margin_top && ref->start_row + ref->effective_num_rows <= margin_bottom;
|
|
}
|
|
|
|
static inline bool
|
|
ref_outside_region(const ImageRef *ref, index_type margin_top, index_type margin_bottom) {
|
|
return ref->start_row + ref->effective_num_rows <= margin_top || ref->start_row > (int32_t)margin_bottom;
|
|
}
|
|
|
|
static inline bool
|
|
scroll_filter_margins_func(ImageRef* ref, Image* img, const void* data, CellPixelSize cell) {
|
|
ScrollData *d = (ScrollData*)data;
|
|
if (ref_within_region(ref, d->margin_top, d->margin_bottom)) {
|
|
ref->start_row += d->amt;
|
|
if (ref_outside_region(ref, d->margin_top, d->margin_bottom)) return true;
|
|
// Clip the image if scrolling has resulted in part of it being outside the page area
|
|
uint32_t clip_amt, clipped_rows;
|
|
if (ref->start_row < (int32_t)d->margin_top) {
|
|
// image moved up
|
|
clipped_rows = d->margin_top - ref->start_row;
|
|
clip_amt = cell.height * clipped_rows;
|
|
if (ref->src_height <= clip_amt) return true;
|
|
ref->src_y += clip_amt; ref->src_height -= clip_amt;
|
|
ref->effective_num_rows -= clipped_rows;
|
|
update_src_rect(ref, img);
|
|
ref->start_row += clipped_rows;
|
|
} else if (ref->start_row + ref->effective_num_rows > d->margin_bottom) {
|
|
// image moved down
|
|
clipped_rows = ref->start_row + ref->effective_num_rows - d->margin_bottom;
|
|
clip_amt = cell.height * clipped_rows;
|
|
if (ref->src_height <= clip_amt) return true;
|
|
ref->src_height -= clip_amt;
|
|
ref->effective_num_rows -= clipped_rows;
|
|
update_src_rect(ref, img);
|
|
}
|
|
return ref_outside_region(ref, d->margin_top, d->margin_bottom);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
grman_scroll_images(GraphicsManager *self, const ScrollData *data, CellPixelSize cell) {
|
|
if (self->image_count) {
|
|
self->layers_dirty = true;
|
|
modify_refs(self, data, true, data->has_margins ? scroll_filter_margins_func : scroll_filter_func, cell);
|
|
}
|
|
}
|
|
|
|
static inline bool
|
|
clear_filter_func(const ImageRef *ref, Image UNUSED *img, const void UNUSED *data, CellPixelSize cell UNUSED) {
|
|
return ref->start_row + (int32_t)ref->effective_num_rows > 0;
|
|
}
|
|
|
|
static inline bool
|
|
clear_all_filter_func(const ImageRef *ref UNUSED, Image UNUSED *img, const void UNUSED *data, CellPixelSize cell UNUSED) {
|
|
return true;
|
|
}
|
|
|
|
void
|
|
grman_clear(GraphicsManager *self, bool all, CellPixelSize cell) {
|
|
filter_refs(self, NULL, true, all ? clear_all_filter_func : clear_filter_func, cell, false);
|
|
}
|
|
|
|
static inline bool
|
|
id_filter_func(const ImageRef *ref, Image *img, const void *data, CellPixelSize cell UNUSED) {
|
|
const GraphicsCommand *g = data;
|
|
if (g->id && img->client_id == g->id) return !g->placement_id || ref->client_id == g->placement_id;
|
|
return false;
|
|
}
|
|
|
|
static inline bool
|
|
number_filter_func(const ImageRef *ref, Image *img, const void *data, CellPixelSize cell UNUSED) {
|
|
const GraphicsCommand *g = data;
|
|
if (g->image_number && img->client_number == g->image_number) return !g->placement_id || ref->client_id == g->placement_id;
|
|
return false;
|
|
}
|
|
|
|
|
|
static inline bool
|
|
x_filter_func(const ImageRef *ref, Image UNUSED *img, const void *data, CellPixelSize cell UNUSED) {
|
|
const GraphicsCommand *g = data;
|
|
return ref->start_column <= (int32_t)g->x_offset - 1 && ((int32_t)g->x_offset - 1) < ((int32_t)(ref->start_column + ref->effective_num_cols));
|
|
}
|
|
|
|
static inline bool
|
|
y_filter_func(const ImageRef *ref, Image UNUSED *img, const void *data, CellPixelSize cell UNUSED) {
|
|
const GraphicsCommand *g = data;
|
|
return ref->start_row <= (int32_t)g->y_offset - 1 && ((int32_t)(g->y_offset - 1 < ref->start_row + ref->effective_num_rows));
|
|
}
|
|
|
|
static inline bool
|
|
z_filter_func(const ImageRef *ref, Image UNUSED *img, const void *data, CellPixelSize cell UNUSED) {
|
|
const GraphicsCommand *g = data;
|
|
return ref->z_index == g->z_index;
|
|
}
|
|
|
|
|
|
static inline bool
|
|
point_filter_func(const ImageRef *ref, Image *img, const void *data, CellPixelSize cell) {
|
|
return x_filter_func(ref, img, data, cell) && y_filter_func(ref, img, data, cell);
|
|
}
|
|
|
|
static inline bool
|
|
point3d_filter_func(const ImageRef *ref, Image *img, const void *data, CellPixelSize cell) {
|
|
return z_filter_func(ref, img, data, cell) && point_filter_func(ref, img, data, cell);
|
|
}
|
|
|
|
|
|
static void
|
|
handle_delete_command(GraphicsManager *self, const GraphicsCommand *g, Cursor *c, bool *is_dirty, CellPixelSize cell) {
|
|
GraphicsCommand d;
|
|
bool only_first_image = false;
|
|
switch (g->delete_action) {
|
|
#define I(u, data, func) filter_refs(self, data, g->delete_action == u, func, cell, only_first_image); *is_dirty = true; break
|
|
#define D(l, u, data, func) case l: case u: I(u, data, func)
|
|
#define G(l, u, func) D(l, u, g, func)
|
|
case 0:
|
|
D('a', 'A', NULL, clear_filter_func);
|
|
G('i', 'I', id_filter_func);
|
|
G('p', 'P', point_filter_func);
|
|
G('q', 'Q', point3d_filter_func);
|
|
G('x', 'X', x_filter_func);
|
|
G('y', 'Y', y_filter_func);
|
|
G('z', 'Z', z_filter_func);
|
|
case 'c':
|
|
case 'C':
|
|
d.x_offset = c->x + 1; d.y_offset = c->y + 1;
|
|
I('C', &d, point_filter_func);
|
|
case 'n':
|
|
case 'N':
|
|
only_first_image = true;
|
|
I('N', g, number_filter_func);
|
|
default:
|
|
REPORT_ERROR("Unknown graphics command delete action: %c", g->delete_action);
|
|
break;
|
|
#undef G
|
|
#undef D
|
|
#undef I
|
|
}
|
|
if (!self->image_count && self->count) self->count = 0;
|
|
}
|
|
|
|
// }}}
|
|
|
|
void
|
|
grman_resize(GraphicsManager *self, index_type UNUSED old_lines, index_type UNUSED lines, index_type UNUSED old_columns, index_type UNUSED columns) {
|
|
self->layers_dirty = true;
|
|
}
|
|
|
|
void
|
|
grman_rescale(GraphicsManager *self, CellPixelSize cell) {
|
|
ImageRef *ref; Image *img;
|
|
self->layers_dirty = true;
|
|
for (size_t i = self->image_count; i-- > 0;) {
|
|
img = self->images + i;
|
|
for (size_t j = img->refcnt; j-- > 0;) {
|
|
ref = img->refs + j;
|
|
ref->cell_x_offset = MIN(ref->cell_x_offset, cell.width - 1);
|
|
ref->cell_y_offset = MIN(ref->cell_y_offset, cell.height - 1);
|
|
update_dest_rect(ref, ref->num_cols, ref->num_rows, cell);
|
|
}
|
|
}
|
|
}
|
|
|
|
const char*
|
|
grman_handle_command(GraphicsManager *self, const GraphicsCommand *g, const uint8_t *payload, Cursor *c, bool *is_dirty, CellPixelSize cell) {
|
|
const char *ret = NULL;
|
|
command_response[0] = 0;
|
|
|
|
if (g->id && g->image_number) {
|
|
set_command_failed_response("EINVAL", "Must not specify both image id and image number");
|
|
return finish_command_response(g, false, g->id, g->placement_id, g->image_number);
|
|
}
|
|
|
|
switch(g->action) {
|
|
case 0:
|
|
case 't':
|
|
case 'T':
|
|
case 'q': {
|
|
uint32_t iid = g->id, q_iid = iid;
|
|
bool is_query = g->action == 'q';
|
|
if (is_query) { iid = 0; if (!q_iid) { REPORT_ERROR("Query graphics command without image id"); break; } }
|
|
Image *image = handle_add_command(self, g, payload, is_dirty, iid);
|
|
if (is_query) ret = finish_command_response(g, image != NULL, q_iid, 0, 0);
|
|
else ret = finish_command_response(g, image != NULL, self->last_init_graphics_command.id, self->last_init_graphics_command.placement_id, self->last_init_graphics_command.image_number);
|
|
if (self->last_init_graphics_command.action == 'T' && image && image->data_loaded) handle_put_command(self, &self->last_init_graphics_command, c, is_dirty, image, cell);
|
|
id_type added_image_id = image ? image->internal_id : 0;
|
|
if (g->action == 'q') remove_images(self, add_trim_predicate, 0);
|
|
if (self->used_storage > STORAGE_LIMIT) apply_storage_quota(self, STORAGE_LIMIT, added_image_id);
|
|
break;
|
|
}
|
|
case 'p':
|
|
if (!g->id && !g->image_number) {
|
|
REPORT_ERROR("Put graphics command without image id or number");
|
|
break;
|
|
}
|
|
uint32_t image_id = handle_put_command(self, g, c, is_dirty, NULL, cell);
|
|
ret = finish_command_response(g, true, image_id, g->placement_id, g->image_number);
|
|
break;
|
|
case 'd':
|
|
handle_delete_command(self, g, c, is_dirty, cell);
|
|
break;
|
|
default:
|
|
REPORT_ERROR("Unknown graphics command action: %c", g->action);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
// Boilerplate {{{
|
|
static PyObject *
|
|
new(PyTypeObject UNUSED *type, PyObject UNUSED *args, PyObject UNUSED *kwds) {
|
|
PyObject *ans = (PyObject*)grman_alloc();
|
|
if (ans == NULL) PyErr_NoMemory();
|
|
return ans;
|
|
}
|
|
|
|
static inline PyObject*
|
|
image_as_dict(Image *img) {
|
|
#define U(x) #x, img->x
|
|
return Py_BuildValue("{sI sI sI sI sK sI sI sO sO sN}",
|
|
U(texture_id), U(client_id), U(width), U(height), U(internal_id), U(refcnt), U(client_number),
|
|
"data_loaded", img->data_loaded ? Py_True : Py_False,
|
|
"is_4byte_aligned", img->load_data.is_4byte_aligned ? Py_True : Py_False,
|
|
"data", Py_BuildValue("y#", img->load_data.data, img->load_data.data_sz)
|
|
);
|
|
#undef U
|
|
|
|
}
|
|
|
|
#define W(x) static PyObject* py##x(GraphicsManager UNUSED *self, PyObject *args)
|
|
#define PA(fmt, ...) if(!PyArg_ParseTuple(args, fmt, __VA_ARGS__)) return NULL;
|
|
|
|
W(image_for_client_id) {
|
|
unsigned long id = PyLong_AsUnsignedLong(args);
|
|
bool existing = false;
|
|
Image *img = find_or_create_image(self, id, &existing);
|
|
if (!existing) { Py_RETURN_NONE; }
|
|
return image_as_dict(img);
|
|
}
|
|
|
|
W(image_for_client_number) {
|
|
unsigned long num = PyLong_AsUnsignedLong(args);
|
|
Image *img = img_by_client_number(self, num);
|
|
if (!img) Py_RETURN_NONE;
|
|
return image_as_dict(img);
|
|
}
|
|
|
|
W(shm_write) {
|
|
const char *name, *data;
|
|
Py_ssize_t sz;
|
|
PA("ss#", &name, &data, &sz);
|
|
int fd = shm_open(name, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
|
|
if (fd == -1) { PyErr_SetFromErrnoWithFilename(PyExc_OSError, name); return NULL; }
|
|
int ret = ftruncate(fd, sz);
|
|
if (ret != 0) { safe_close(fd, __FILE__, __LINE__); PyErr_SetFromErrnoWithFilename(PyExc_OSError, name); return NULL; }
|
|
void *addr = mmap(0, sz, PROT_WRITE, MAP_SHARED, fd, 0);
|
|
if (addr == MAP_FAILED) { safe_close(fd, __FILE__, __LINE__); PyErr_SetFromErrnoWithFilename(PyExc_OSError, name); return NULL; }
|
|
memcpy(addr, data, sz);
|
|
if (munmap(addr, sz) != 0) { safe_close(fd, __FILE__, __LINE__); PyErr_SetFromErrnoWithFilename(PyExc_OSError, name); return NULL; }
|
|
safe_close(fd, __FILE__, __LINE__);
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
W(shm_unlink) {
|
|
char *name;
|
|
PA("s", &name);
|
|
int ret = shm_unlink(name);
|
|
if (ret == -1) { PyErr_SetFromErrnoWithFilename(PyExc_OSError, name); return NULL; }
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
W(set_send_to_gpu) {
|
|
send_to_gpu = PyObject_IsTrue(args) ? true : false;
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
W(update_layers) {
|
|
unsigned int scrolled_by, sx, sy; float xstart, ystart, dx, dy;
|
|
CellPixelSize cell;
|
|
PA("IffffIIII", &scrolled_by, &xstart, &ystart, &dx, &dy, &sx, &sy, &cell.width, &cell.height);
|
|
grman_update_layers(self, scrolled_by, xstart, ystart, dx, dy, sx, sy, cell);
|
|
PyObject *ans = PyTuple_New(self->count);
|
|
for (size_t i = 0; i < self->count; i++) {
|
|
ImageRenderData *r = self->render_data + i;
|
|
#define R(offset) Py_BuildValue("{sf sf sf sf}", "left", r->vertices[offset + 8], "top", r->vertices[offset + 1], "right", r->vertices[offset], "bottom", r->vertices[offset + 5])
|
|
PyTuple_SET_ITEM(ans, i,
|
|
Py_BuildValue("{sN sN sI si sK}", "src_rect", R(0), "dest_rect", R(2), "group_count", r->group_count, "z_index", r->z_index, "image_id", r->image_id)
|
|
);
|
|
#undef R
|
|
}
|
|
return ans;
|
|
}
|
|
|
|
#define M(x, va) {#x, (PyCFunction)py##x, va, ""}
|
|
|
|
static PyMethodDef methods[] = {
|
|
M(image_for_client_id, METH_O),
|
|
M(image_for_client_number, METH_O),
|
|
M(update_layers, METH_VARARGS),
|
|
{NULL} /* Sentinel */
|
|
};
|
|
|
|
static PyMemberDef members[] = {
|
|
{"image_count", T_PYSSIZET, offsetof(GraphicsManager, image_count), 0, "image_count"},
|
|
{"disk_cache", T_OBJECT_EX, offsetof(GraphicsManager, disk_cache), READONLY, "disk_cache"},
|
|
{NULL},
|
|
};
|
|
|
|
PyTypeObject GraphicsManager_Type = {
|
|
PyVarObject_HEAD_INIT(NULL, 0)
|
|
.tp_name = "fast_data_types.GraphicsManager",
|
|
.tp_basicsize = sizeof(GraphicsManager),
|
|
.tp_dealloc = (destructor)dealloc,
|
|
.tp_flags = Py_TPFLAGS_DEFAULT,
|
|
.tp_doc = "GraphicsManager",
|
|
.tp_new = new,
|
|
.tp_methods = methods,
|
|
.tp_members = members,
|
|
};
|
|
|
|
static PyMethodDef module_methods[] = {
|
|
M(shm_write, METH_VARARGS),
|
|
M(shm_unlink, METH_VARARGS),
|
|
M(set_send_to_gpu, METH_O),
|
|
{NULL, NULL, 0, NULL} /* Sentinel */
|
|
};
|
|
|
|
|
|
bool
|
|
init_graphics(PyObject *module) {
|
|
if (PyType_Ready(&GraphicsManager_Type) < 0) return false;
|
|
if (PyModule_AddObject(module, "GraphicsManager", (PyObject *)&GraphicsManager_Type) != 0) return false;
|
|
if (PyModule_AddFunctions(module, module_methods) != 0) return false;
|
|
Py_INCREF(&GraphicsManager_Type);
|
|
return true;
|
|
}
|
|
// }}}
|