4 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include "interlacemodes.h"
28 #include "mwindow.inc"
30 #include "videodevice.inc"
31 #include "mainerror.h"
36 FilePNG::FilePNG(Asset *asset, File *file)
37 : FileList(asset, file, "PNGLIST", ".png", FILE_PNG, FILE_PNG_LIST)
48 int FilePNG::check_sig(Asset *asset)
50 FILE *stream = fopen(asset->path, "rb");
55 //printf("FilePNG::check_sig 1\n");
57 (void)fread(test, 16, 1, stream);
60 // if(png_sig_cmp((unsigned char*)test, 0, 8))
61 if(png_check_sig((unsigned char*)test, 8))
63 //printf("FilePNG::check_sig 1\n");
67 if(test[0] == 'P' && test[1] == 'N' && test[2] == 'G' &&
68 test[3] == 'L' && test[4] == 'I' && test[5] == 'S' && test[6] == 'T')
70 //printf("FilePNG::check_sig 1\n");
79 void FilePNG::get_parameters(BC_WindowBase *parent_window,
80 Asset *asset, BC_WindowBase* &format_window,
81 int audio_options, int video_options, EDL *edl)
85 PNGConfigVideo *window = new PNGConfigVideo(parent_window, asset);
86 format_window = window;
87 window->create_objects();
96 int FilePNG::can_copy_from(Asset *asset, int64_t position)
98 if(asset->format == FILE_PNG ||
99 asset->format == FILE_PNG_LIST)
105 int FilePNG::colormodel_supported(int colormodel)
107 if( colormodel == BC_RGB888 || colormodel == BC_RGBA8888 )
109 if( colormodel == BC_RGB161616 && native_cmodel == BC_RGBA16161616 )
111 if( native_cmodel >= 0 )
112 return native_cmodel;
113 int use_16bit = BC_CModels::is_float(colormodel) ||
114 BC_CModels::calculate_max(colormodel) > 255 ? 1 : 0;
115 return BC_CModels::has_alpha(colormodel) ?
116 (use_16bit ? BC_RGBA16161616 : BC_RGBA8888) :
117 (use_16bit ? BC_RGB161616 : BC_RGB888);
120 int FilePNG::get_best_colormodel(Asset *asset, int driver)
122 return asset->png_depth == 16 ?
123 (asset->png_use_alpha ? BC_RGBA16161616 : BC_RGB161616) :
124 (asset->png_use_alpha ? BC_RGBA8888 : BC_RGB888);
127 int FilePNG::read_frame_header(char *path)
136 if(!(stream = fopen(path, "rb")))
138 eprintf("Error while opening \"%s\" for reading. \n%m\n", asset->path);
144 png_infop end_info = 0;
145 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
146 info_ptr = png_create_info_struct(png_ptr);
147 png_init_io(png_ptr, stream);
150 png_read_info(png_ptr, info_ptr);
152 asset->width = png_get_image_width(png_ptr, info_ptr);
153 asset->height = png_get_image_height(png_ptr, info_ptr);
154 asset->interlace_mode = ILACE_MODE_NOTINTERLACED;
155 color_type = png_get_color_type(png_ptr, info_ptr);
156 color_depth = png_get_bit_depth(png_ptr,info_ptr);
158 png_get_tRNS(png_ptr, info_ptr, NULL, &num_trans, NULL);
159 native_cmodel = color_depth == 16 ?
160 ((color_type & PNG_COLOR_MASK_ALPHA) ?
161 BC_RGBA16161616 : BC_RGB161616) :
162 ((color_type & PNG_COLOR_MASK_ALPHA) || (num_trans > 0) ?
163 BC_RGBA8888 : BC_RGB888);
164 asset->png_use_alpha = BC_CModels::has_alpha(native_cmodel) ? 1 : 0;
166 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
174 static void read_function(png_structp png_ptr,
178 VFrame *input = (VFrame*)png_get_io_ptr(png_ptr);
180 memcpy(data, input->get_data() + input->get_compressed_size(), length);
181 input->set_compressed_size(input->get_compressed_size() + length);
184 static void write_function(png_structp png_ptr, png_bytep data, png_uint_32 length)
186 VFrame *output = (VFrame*)png_get_io_ptr(png_ptr);
187 long total_length = output->get_compressed_size() + length;
188 if(output->get_compressed_allocated() < total_length) {
189 long new_length = 2 * (output->get_compressed_allocated() + length);
190 output->allocate_compressed_data(new_length);
192 memcpy(output->get_data() + output->get_compressed_size(), data, length);
193 output->set_compressed_size(total_length);
196 static void flush_function(png_structp png_ptr)
201 int FilePNG::write_frame(VFrame *frame, VFrame *data, FrameWriterUnit *unit)
203 PNGUnit *png_unit = (PNGUnit*)unit;
204 png_structp png_ptr = 0;
205 png_infop info_ptr = 0;
206 VFrame *output_frame = frame;
208 data->set_compressed_size(0);
209 //printf("FilePNG::write_frame 1\n");
210 native_cmodel = asset->png_depth == 16 ?
211 (asset->png_use_alpha ? BC_RGBA16161616 : BC_RGB161616) :
212 (asset->png_use_alpha ? BC_RGBA8888 : BC_RGB888) ;
213 if( frame->get_color_model() != native_cmodel ) {
214 VFrame::get_temp(png_unit->temp_frame,
215 asset->width, asset->height, native_cmodel);
216 png_unit->temp_frame->transfer_from(frame);
217 output_frame = png_unit->temp_frame;
220 //printf("FilePNG::write_frame 1\n");
221 png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
223 if( !setjmp(png_jmpbuf(png_ptr)) ) {
224 info_ptr = png_create_info_struct(png_ptr);
225 png_set_write_fn(png_ptr, data,
226 (png_rw_ptr)write_function, (png_flush_ptr)flush_function);
227 png_set_compression_level(png_ptr, asset->png_compression);
228 png_set_IHDR(png_ptr, info_ptr, asset->width, asset->height, asset->png_depth,
229 asset->png_use_alpha ? PNG_COLOR_TYPE_RGB_ALPHA : PNG_COLOR_TYPE_RGB,
230 PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
231 png_write_info(png_ptr, info_ptr);
232 if( BC_Resources::little_endian ) png_set_swap(png_ptr);
233 png_write_image(png_ptr, output_frame->get_rows());
234 png_write_end(png_ptr, info_ptr);
237 png_destroy_write_struct(&png_ptr, &info_ptr);
240 char error[256]; png_error(png_ptr, error);
241 fprintf(stderr, "FilePNG::write_frame failed: %s\n", error);
243 //printf("FilePNG::write_frame 3 %d\n", data->get_compressed_size());
247 int FilePNG::read_frame(VFrame *output, VFrame *input)
251 png_infop end_info = 0;
256 int size = input->get_compressed_size();
257 input->set_compressed_size(0);
259 //printf("FilePNG::read_frame 1 %d %d\n", native_cmodel, output->get_color_model());
260 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
261 info_ptr = png_create_info_struct(png_ptr);
262 png_set_read_fn(png_ptr, input, (png_rw_ptr)read_function);
263 png_read_info(png_ptr, info_ptr);
265 int png_color_type = png_get_color_type(png_ptr, info_ptr);
266 if( png_color_type == PNG_COLOR_TYPE_GRAY ||
267 png_color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
268 png_set_gray_to_rgb(png_ptr);
270 colormodel = output->get_color_model();
271 color_type = png_get_color_type(png_ptr, info_ptr);
272 color_depth = png_get_bit_depth(png_ptr,info_ptr);
275 png_get_tRNS(png_ptr, info_ptr, NULL, &num_trans, NULL);
277 native_cmodel = color_depth == 16 ?
278 ((color_type & PNG_COLOR_MASK_ALPHA) ?
279 BC_RGBA16161616 : BC_RGB161616) :
280 ((color_type & PNG_COLOR_MASK_ALPHA) || (num_trans > 0) ?
281 BC_RGBA8888 : BC_RGB888);
283 if( ((native_cmodel == BC_RGBA16161616) || (native_cmodel == BC_RGB161616)) &&
284 ((colormodel == BC_RGBA8888) || (colormodel == BC_RGB888)) )
285 png_set_strip_16(png_ptr);
287 // If we're dropping the alpha channel
288 if( !BC_CModels::has_alpha(colormodel) && BC_CModels::has_alpha(native_cmodel) ) {
289 png_color_16 my_background;
290 png_color_16p image_background;
291 memset(&my_background,0,sizeof(png_color_16));
292 // use the background color of the image
293 if( png_get_bKGD(png_ptr, info_ptr, &image_background) )
294 png_set_background(png_ptr, image_background, PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
296 // otherwise, use black
297 png_set_background(png_ptr, &my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
299 else if( BC_CModels::has_alpha(colormodel) && !BC_CModels::has_alpha(native_cmodel) )
300 // If we're adding the alpha channel, alpha = max pixel value
301 png_set_add_alpha(png_ptr, BC_CModels::calculate_max(colormodel), PNG_FILLER_AFTER);
304 if( (color_depth == 16) &&
305 ((colormodel == BC_RGBA16161616) || (colormodel == BC_RGB161616)) )
306 png_set_swap(png_ptr);
308 if( !(color_type & PNG_COLOR_MASK_COLOR) )
309 png_set_gray_to_rgb(png_ptr);
311 if( color_type & PNG_COLOR_MASK_PALETTE )
312 png_set_palette_to_rgb(png_ptr);
314 if( color_depth <= 8 )
315 png_set_expand(png_ptr);
318 png_read_image(png_ptr, output->get_rows());
320 //printf("FilePNG::read_frame 3\n");
321 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
322 input->set_compressed_size(size);
323 //printf("FilePNG::read_frame 4\n");
327 FrameWriterUnit* FilePNG::new_writer_unit(FrameWriter *writer)
329 return new PNGUnit(this, writer);
333 PNGUnit::PNGUnit(FilePNG *file, FrameWriter *writer)
334 : FrameWriterUnit(writer)
341 if(temp_frame) delete temp_frame;
345 PNGConfigVideo::PNGConfigVideo(BC_WindowBase *parent_window, Asset *asset)
346 : BC_Window(_(PROGRAM_NAME ": Video Compression"),
347 parent_window->get_abs_cursor_x(1), parent_window->get_abs_cursor_y(1),
350 this->parent_window = parent_window;
356 // *** CONTEXT_HELP ***
357 context_help_set_keyword("Single File Rendering");
360 PNGConfigVideo::~PNGConfigVideo()
365 void PNGConfigVideo::create_objects()
367 lock_window("PNGConfigVideo::create_objects");
369 int xs5 = xS(5), ys5 = yS(5), xs10 = xS(10), ys10 = yS(10);
370 int x = xs10, y = ys10;
371 add_subwindow(use_alpha = new PNGUseAlpha(this, x, y));
372 y += use_alpha->get_h() + ys10;
373 add_subwindow(title = new BC_Title(x,y,_("Compression:")));
374 int x1 = x + title->get_w() + xs10;
375 compression = new PNGCompression(this, x1, y);
376 compression->create_objects();
377 y += compression->get_h() + ys5;
378 add_subwindow(title = new BC_Title(x,y,_("Depth:")));
379 x1 = x + title->get_w() + xs10;
380 add_subwindow(depth8 = new PNGDepth8bit(this, x1, y));
381 x1 += depth8->get_w() + xs5;
382 add_subwindow(depth16 = new PNGDepth16bit(this, x1, y));
383 add_subwindow(new BC_OKButton(this));
388 int PNGConfigVideo::close_event()
394 int PNGConfigVideo::update_depth(int depth)
396 asset->png_depth = depth;
397 depth8->update(depth == 8);
398 depth16->update(depth == 16);
403 PNGUseAlpha::PNGUseAlpha(PNGConfigVideo *gui, int x, int y)
404 : BC_CheckBox(x, y, gui->asset->png_use_alpha, _("Use alpha"))
409 int PNGUseAlpha::handle_event()
411 gui->asset->png_use_alpha = get_value();
415 PNGCompression::PNGCompression(PNGConfigVideo *gui, int x, int y)
416 : BC_TumbleTextBox(gui, (int64_t)gui->asset->png_compression,
417 (int64_t)0, (int64_t)9, x, y, xS(40))
422 int PNGCompression::handle_event()
424 gui->asset->png_compression = atol(get_text());
428 PNGDepth8bit::PNGDepth8bit(PNGConfigVideo *gui, int x, int y)
429 : BC_Radial(x, y, gui->asset->png_depth==8,_("8 Bit"))
434 int PNGDepth8bit::handle_event()
436 return gui->update_depth(8);
439 PNGDepth16bit::PNGDepth16bit(PNGConfigVideo *gui, int x, int y)
440 : BC_Radial(x, y, gui->asset->png_depth==16,_("16 Bit"))
445 int PNGDepth16bit::handle_event()
447 return gui->update_depth(16);