5 #include "interlacemodes.h"
10 #include "videodevice.inc"
11 #include "mainerror.h"
15 FilePNG::FilePNG(Asset *asset, File *file)
16 : FileList(asset, file, "PNGLIST", ".png", FILE_PNG, FILE_PNG_LIST)
26 int FilePNG::check_sig(Asset *asset)
28 FILE *stream = fopen(asset->path, "rb");
33 //printf("FilePNG::check_sig 1\n");
35 fread(test, 16, 1, stream);
38 if(png_check_sig((unsigned char*)test, 8))
40 //printf("FilePNG::check_sig 1\n");
44 if(test[0] == 'P' && test[1] == 'N' && test[2] == 'G' &&
45 test[3] == 'L' && test[4] == 'I' && test[5] == 'S' && test[6] == 'T')
47 //printf("FilePNG::check_sig 1\n");
56 void FilePNG::get_parameters(BC_WindowBase *parent_window,
58 BC_WindowBase* &format_window,
64 PNGConfigVideo *window = new PNGConfigVideo(parent_window, asset);
65 format_window = window;
66 window->create_objects();
75 int FilePNG::can_copy_from(Edit *edit, int64_t position)
77 if(edit->asset->format == FILE_MOV)
79 if(match4(edit->asset->vcodec, QUICKTIME_PNG)) return 1;
82 if(edit->asset->format == FILE_PNG ||
83 edit->asset->format == FILE_PNG_LIST)
90 int FilePNG::colormodel_supported(int colormodel)
92 if (((colormodel == BC_RGBA8888) && (native_cmodel == BC_RGBA16161616))
93 || ((colormodel == BC_RGB161616) && (native_cmodel == BC_RGBA16161616))
94 || (colormodel == BC_RGB888))
98 else if ((colormodel == BC_RGB161616) && (native_cmodel == BC_RGBA8888))
104 return native_cmodel;
109 int FilePNG::get_best_colormodel(Asset *asset, int driver)
111 if(asset->png_use_alpha)
120 int FilePNG::read_frame_header(char *path)
129 if(!(stream = fopen(path, "rb")))
131 eprintf("Error while opening \"%s\" for reading. \n%m\n", asset->path);
137 png_infop end_info = 0;
138 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
139 info_ptr = png_create_info_struct(png_ptr);
140 png_init_io(png_ptr, stream);
143 png_read_info(png_ptr, info_ptr);
145 asset->width = png_get_image_width(png_ptr, info_ptr);
146 asset->height = png_get_image_height(png_ptr, info_ptr);
148 asset->interlace_mode = BC_ILACE_MODE_NOTINTERLACED;
150 color_type = png_get_color_type(png_ptr, info_ptr);
151 color_depth = png_get_bit_depth(png_ptr,info_ptr);
153 png_get_tRNS(png_ptr, info_ptr, NULL, &num_trans, NULL);
155 if (color_depth == 16)
157 if (color_type & PNG_COLOR_MASK_ALPHA)
159 native_cmodel = BC_RGBA16161616;
163 native_cmodel = BC_RGB161616;
167 if ((color_type & PNG_COLOR_MASK_ALPHA)
170 native_cmodel = BC_RGBA8888;
174 native_cmodel = BC_RGB888;
178 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
189 static void read_function(png_structp png_ptr,
193 VFrame *input = (VFrame*)png_get_io_ptr(png_ptr);
195 memcpy(data, input->get_data() + input->get_compressed_size(), length);
196 input->set_compressed_size(input->get_compressed_size() + length);
199 static void write_function(png_structp png_ptr, png_bytep data, png_uint_32 length)
201 VFrame *output = (VFrame*)png_get_io_ptr(png_ptr);
203 if(output->get_compressed_allocated() < output->get_compressed_size() + length)
204 output->allocate_compressed_data((output->get_compressed_allocated() + length) * 2);
205 memcpy(output->get_data() + output->get_compressed_size(), data, length);
206 output->set_compressed_size(output->get_compressed_size() + length);
209 static void flush_function(png_structp png_ptr)
216 int FilePNG::write_frame(VFrame *frame, VFrame *data, FrameWriterUnit *unit)
218 PNGUnit *png_unit = (PNGUnit*)unit;
222 png_infop end_info = 0;
223 VFrame *output_frame;
224 data->set_compressed_size(0);
226 //printf("FilePNG::write_frame 1\n");
227 png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
228 info_ptr = png_create_info_struct(png_ptr);
229 png_set_write_fn(png_ptr,
231 (png_rw_ptr)write_function,
232 (png_flush_ptr)flush_function);
233 png_set_compression_level(png_ptr, 9);
235 png_set_IHDR(png_ptr,
240 asset->png_use_alpha ?
241 PNG_COLOR_TYPE_RGB_ALPHA :
244 PNG_COMPRESSION_TYPE_DEFAULT,
245 PNG_FILTER_TYPE_DEFAULT);
246 png_write_info(png_ptr, info_ptr);
248 //printf("FilePNG::write_frame 1\n");
249 native_cmodel = asset->png_use_alpha ? BC_RGBA8888 : BC_RGB888;
250 if(frame->get_color_model() != native_cmodel)
252 if(!png_unit->temp_frame) png_unit->temp_frame = new VFrame(0,
257 cmodel_transfer(png_unit->temp_frame->get_rows(), /* Leave NULL if non existent */
259 png_unit->temp_frame->get_y(), /* Leave NULL if non existent */
260 png_unit->temp_frame->get_u(),
261 png_unit->temp_frame->get_v(),
262 frame->get_y(), /* Leave NULL if non existent */
265 0, /* Dimensions to capture from input frame */
269 0, /* Dimensions to project on output frame */
273 frame->get_color_model(),
274 png_unit->temp_frame->get_color_model(),
275 0, /* When transfering BC_RGBA8888 to non-alpha this is the background color in 0xRRGGBB hex */
276 asset->width, /* For planar use the luma rowspan */
279 output_frame = png_unit->temp_frame;
282 output_frame = frame;
285 //printf("FilePNG::write_frame 2\n");
286 png_write_image(png_ptr, output_frame->get_rows());
287 png_write_end(png_ptr, info_ptr);
288 png_destroy_write_struct(&png_ptr, &info_ptr);
289 //printf("FilePNG::write_frame 3 %d\n", data->get_compressed_size());
294 int FilePNG::read_frame(VFrame *output, VFrame *input)
298 png_infop end_info = 0;
303 int size = input->get_compressed_size();
304 input->set_compressed_size(0);
307 //printf("FilePNG::read_frame 1 %d %d\n", native_cmodel, output->get_color_model());
308 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
309 info_ptr = png_create_info_struct(png_ptr);
310 png_set_read_fn(png_ptr, input, (png_rw_ptr)read_function);
311 png_read_info(png_ptr, info_ptr);
313 int png_color_type = png_get_color_type(png_ptr, info_ptr);
314 if (png_color_type == PNG_COLOR_TYPE_GRAY ||
315 png_color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
317 png_set_gray_to_rgb(png_ptr);
320 colormodel = output->get_color_model();
321 color_type = png_get_color_type(png_ptr, info_ptr);
322 color_depth = png_get_bit_depth(png_ptr,info_ptr);
324 if (((native_cmodel == BC_RGBA16161616)||(native_cmodel == BC_RGB161616))
325 && ((colormodel == BC_RGBA8888)||(colormodel == BC_RGB888)))
327 png_set_strip_16(png_ptr);
330 /* If we're dropping the alpha channel, use the background color of the image
331 otherwise, use black */
332 if (((native_cmodel == BC_RGBA16161616)||(native_cmodel == BC_RGBA8888))
333 && ((colormodel == BC_RGB161616)||(colormodel == BC_RGB888)))
335 png_color_16 my_background;
336 png_color_16p image_background;
338 memset(&my_background,0,sizeof(png_color_16));
340 if (png_get_bKGD(png_ptr, info_ptr, &image_background))
342 png_set_background(png_ptr, image_background, PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
346 png_set_background(png_ptr, &my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
351 if ((color_depth == 16)
352 &&((colormodel == BC_RGBA16161616)||(colormodel == BC_RGB161616)))
354 png_set_swap(png_ptr);
357 if (!(color_type & PNG_COLOR_MASK_COLOR))
359 png_set_gray_to_rgb(png_ptr);
362 if (color_type & PNG_COLOR_MASK_PALETTE)
364 png_set_palette_to_rgb(png_ptr);
367 if (color_depth <= 8)
369 png_set_expand(png_ptr);
373 png_read_image(png_ptr, output->get_rows());
374 //printf("FilePNG::read_frame 3\n");
375 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
377 input->set_compressed_size(size);
379 //printf("FilePNG::read_frame 4\n");
383 FrameWriterUnit* FilePNG::new_writer_unit(FrameWriter *writer)
385 return new PNGUnit(this, writer);
399 PNGUnit::PNGUnit(FilePNG *file, FrameWriter *writer)
400 : FrameWriterUnit(writer)
407 if(temp_frame) delete temp_frame;
418 PNGConfigVideo::PNGConfigVideo(BC_WindowBase *parent_window, Asset *asset)
419 : BC_Window(PROGRAM_NAME ": Video Compression",
420 parent_window->get_abs_cursor_x(1),
421 parent_window->get_abs_cursor_y(1),
425 this->parent_window = parent_window;
429 PNGConfigVideo::~PNGConfigVideo()
433 int PNGConfigVideo::create_objects()
436 add_subwindow(new PNGUseAlpha(this, x, y));
437 add_subwindow(new BC_OKButton(this));
441 int PNGConfigVideo::close_event()
448 PNGUseAlpha::PNGUseAlpha(PNGConfigVideo *gui, int x, int y)
449 : BC_CheckBox(x, y, gui->asset->png_use_alpha, _("Use alpha"))
454 int PNGUseAlpha::handle_event()
456 gui->asset->png_use_alpha = get_value();