5 #include "interlacemodes.h"
10 #include "videodevice.inc"
14 FilePNG::FilePNG(Asset *asset, File *file)
15 : FileList(asset, file, "PNGLIST", ".png", FILE_PNG, FILE_PNG_LIST)
25 int FilePNG::check_sig(Asset *asset)
27 FILE *stream = fopen(asset->path, "rb");
32 //printf("FilePNG::check_sig 1\n");
34 fread(test, 16, 1, stream);
37 if(png_check_sig((unsigned char*)test, 8))
39 //printf("FilePNG::check_sig 1\n");
43 if(test[0] == 'P' && test[1] == 'N' && test[2] == 'G' &&
44 test[3] == 'L' && test[4] == 'I' && test[5] == 'S' && test[6] == 'T')
46 //printf("FilePNG::check_sig 1\n");
55 void FilePNG::get_parameters(BC_WindowBase *parent_window,
57 BC_WindowBase* &format_window,
63 PNGConfigVideo *window = new PNGConfigVideo(parent_window, asset);
64 format_window = window;
65 window->create_objects();
74 int FilePNG::can_copy_from(Edit *edit, int64_t position)
76 if(edit->asset->format == FILE_MOV)
78 if(match4(edit->asset->vcodec, QUICKTIME_PNG)) return 1;
81 if(edit->asset->format == FILE_PNG ||
82 edit->asset->format == FILE_PNG_LIST)
89 int FilePNG::colormodel_supported(int colormodel)
91 if (((colormodel == BC_RGBA8888) && (native_cmodel == BC_RGBA16161616))
92 || ((colormodel == BC_RGB161616) && (native_cmodel == BC_RGBA16161616))
93 || (colormodel == BC_RGB888))
97 else if ((colormodel == BC_RGB161616) && (native_cmodel == BC_RGBA8888))
103 return native_cmodel;
108 int FilePNG::get_best_colormodel(Asset *asset, int driver)
110 if(asset->png_use_alpha)
119 int FilePNG::read_frame_header(char *path)
128 if(!(stream = fopen(path, "rb")))
130 perror("FilePNG::read_frame_header");
136 png_infop end_info = 0;
137 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
138 info_ptr = png_create_info_struct(png_ptr);
139 png_init_io(png_ptr, stream);
142 png_read_info(png_ptr, info_ptr);
144 asset->width = png_get_image_width(png_ptr, info_ptr);
145 asset->height = png_get_image_height(png_ptr, info_ptr);
147 asset->interlace_mode = BC_ILACE_MODE_NOTINTERLACED;
149 color_type = png_get_color_type(png_ptr, info_ptr);
150 color_depth = png_get_bit_depth(png_ptr,info_ptr);
152 png_get_tRNS(png_ptr, info_ptr, NULL, &num_trans, NULL);
154 if (color_depth == 16)
156 if (color_type & PNG_COLOR_MASK_ALPHA)
158 native_cmodel = BC_RGBA16161616;
162 native_cmodel = BC_RGB161616;
166 if ((color_type & PNG_COLOR_MASK_ALPHA)
169 native_cmodel = BC_RGBA8888;
173 native_cmodel = BC_RGB888;
177 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
188 static void read_function(png_structp png_ptr,
192 VFrame *input = (VFrame*)png_get_io_ptr(png_ptr);
194 memcpy(data, input->get_data() + input->get_compressed_size(), length);
195 input->set_compressed_size(input->get_compressed_size() + length);
198 static void write_function(png_structp png_ptr, png_bytep data, png_uint_32 length)
200 VFrame *output = (VFrame*)png_get_io_ptr(png_ptr);
202 if(output->get_compressed_allocated() < output->get_compressed_size() + length)
203 output->allocate_compressed_data((output->get_compressed_allocated() + length) * 2);
204 memcpy(output->get_data() + output->get_compressed_size(), data, length);
205 output->set_compressed_size(output->get_compressed_size() + length);
208 static void flush_function(png_structp png_ptr)
215 int FilePNG::write_frame(VFrame *frame, VFrame *data, FrameWriterUnit *unit)
217 PNGUnit *png_unit = (PNGUnit*)unit;
221 png_infop end_info = 0;
222 VFrame *output_frame;
223 data->set_compressed_size(0);
225 //printf("FilePNG::write_frame 1\n");
226 png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
227 info_ptr = png_create_info_struct(png_ptr);
228 png_set_write_fn(png_ptr,
230 (png_rw_ptr)write_function,
231 (png_flush_ptr)flush_function);
232 png_set_compression_level(png_ptr, 9);
234 png_set_IHDR(png_ptr,
239 asset->png_use_alpha ?
240 PNG_COLOR_TYPE_RGB_ALPHA :
243 PNG_COMPRESSION_TYPE_DEFAULT,
244 PNG_FILTER_TYPE_DEFAULT);
245 png_write_info(png_ptr, info_ptr);
247 //printf("FilePNG::write_frame 1\n");
248 native_cmodel = asset->png_use_alpha ? BC_RGBA8888 : BC_RGB888;
249 if(frame->get_color_model() != native_cmodel)
251 if(!png_unit->temp_frame) png_unit->temp_frame = new VFrame(0,
256 cmodel_transfer(png_unit->temp_frame->get_rows(), /* Leave NULL if non existent */
258 png_unit->temp_frame->get_y(), /* Leave NULL if non existent */
259 png_unit->temp_frame->get_u(),
260 png_unit->temp_frame->get_v(),
261 frame->get_y(), /* Leave NULL if non existent */
264 0, /* Dimensions to capture from input frame */
268 0, /* Dimensions to project on output frame */
272 frame->get_color_model(),
273 png_unit->temp_frame->get_color_model(),
274 0, /* When transfering BC_RGBA8888 to non-alpha this is the background color in 0xRRGGBB hex */
275 asset->width, /* For planar use the luma rowspan */
278 output_frame = png_unit->temp_frame;
281 output_frame = frame;
284 //printf("FilePNG::write_frame 2\n");
285 png_write_image(png_ptr, output_frame->get_rows());
286 png_write_end(png_ptr, info_ptr);
287 png_destroy_write_struct(&png_ptr, &info_ptr);
288 //printf("FilePNG::write_frame 3 %d\n", data->get_compressed_size());
293 int FilePNG::read_frame(VFrame *output, VFrame *input)
297 png_infop end_info = 0;
302 int size = input->get_compressed_size();
303 input->set_compressed_size(0);
306 //printf("FilePNG::read_frame 1 %d %d\n", native_cmodel, output->get_color_model());
307 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
308 info_ptr = png_create_info_struct(png_ptr);
309 png_set_read_fn(png_ptr, input, (png_rw_ptr)read_function);
310 png_read_info(png_ptr, info_ptr);
312 int png_color_type = png_get_color_type(png_ptr, info_ptr);
313 if (png_color_type == PNG_COLOR_TYPE_GRAY ||
314 png_color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
316 png_set_gray_to_rgb(png_ptr);
319 colormodel = output->get_color_model();
320 color_type = png_get_color_type(png_ptr, info_ptr);
321 color_depth = png_get_bit_depth(png_ptr,info_ptr);
323 if (((native_cmodel == BC_RGBA16161616)||(native_cmodel == BC_RGB161616))
324 && ((colormodel == BC_RGBA8888)||(colormodel == BC_RGB888)))
326 png_set_strip_16(png_ptr);
329 /* If we're dropping the alpha channel, use the background color of the image
330 otherwise, use black */
331 if (((native_cmodel == BC_RGBA16161616)||(native_cmodel == BC_RGBA8888))
332 && ((colormodel == BC_RGB161616)||(colormodel == BC_RGB888)))
334 png_color_16 my_background;
335 png_color_16p image_background;
337 memset(&my_background,0,sizeof(png_color_16));
339 if (png_get_bKGD(png_ptr, info_ptr, &image_background))
341 png_set_background(png_ptr, image_background, PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
345 png_set_background(png_ptr, &my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
350 if ((color_depth == 16)
351 &&((colormodel == BC_RGBA16161616)||(colormodel == BC_RGB161616)))
353 png_set_swap(png_ptr);
356 if (!(color_type & PNG_COLOR_MASK_COLOR))
358 png_set_gray_to_rgb(png_ptr);
361 if (color_type & PNG_COLOR_MASK_PALETTE)
363 png_set_palette_to_rgb(png_ptr);
366 if (color_depth <= 8)
368 png_set_expand(png_ptr);
372 png_read_image(png_ptr, output->get_rows());
373 //printf("FilePNG::read_frame 3\n");
374 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
376 input->set_compressed_size(size);
378 //printf("FilePNG::read_frame 4\n");
382 FrameWriterUnit* FilePNG::new_writer_unit(FrameWriter *writer)
384 return new PNGUnit(this, writer);
398 PNGUnit::PNGUnit(FilePNG *file, FrameWriter *writer)
399 : FrameWriterUnit(writer)
406 if(temp_frame) delete temp_frame;
417 PNGConfigVideo::PNGConfigVideo(BC_WindowBase *parent_window, Asset *asset)
418 : BC_Window(PROGRAM_NAME ": Video Compression",
419 parent_window->get_abs_cursor_x(1),
420 parent_window->get_abs_cursor_y(1),
424 this->parent_window = parent_window;
428 PNGConfigVideo::~PNGConfigVideo()
432 int PNGConfigVideo::create_objects()
435 add_subwindow(new PNGUseAlpha(this, x, y));
436 add_subwindow(new BC_OKButton(this));
440 int PNGConfigVideo::close_event()
447 PNGUseAlpha::PNGUseAlpha(PNGConfigVideo *gui, int x, int y)
448 : BC_CheckBox(x, y, gui->asset->png_use_alpha, _("Use alpha"))
453 int PNGUseAlpha::handle_event()
455 gui->asset->png_use_alpha = get_value();