--- /dev/null
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "asset.h"
+#include "edit.h"
+#include "file.h"
+#include "filepng.h"
+#include "interlacemodes.h"
+#include "language.h"
+#include "mwindow.inc"
+#include "vframe.h"
+#include "videodevice.inc"
+#include "mainerror.h"
+
+#include <png.h>
+#include <string.h>
+
+FilePNG::FilePNG(Asset *asset, File *file)
+ : FileList(asset, file, "PNGLIST", ".png", FILE_PNG, FILE_PNG_LIST)
+{
+}
+
+FilePNG::~FilePNG()
+{
+}
+
+
+
+int FilePNG::check_sig(Asset *asset)
+{
+ FILE *stream = fopen(asset->path, "rb");
+
+ if(stream)
+ {
+
+//printf("FilePNG::check_sig 1\n");
+ char test[16];
+ (void)fread(test, 16, 1, stream);
+ fclose(stream);
+
+// if(png_sig_cmp((unsigned char*)test, 0, 8))
+ if(png_check_sig((unsigned char*)test, 8))
+ {
+//printf("FilePNG::check_sig 1\n");
+ return 1;
+ }
+ else
+ if(test[0] == 'P' && test[1] == 'N' && test[2] == 'G' &&
+ test[3] == 'L' && test[4] == 'I' && test[5] == 'S' && test[6] == 'T')
+ {
+//printf("FilePNG::check_sig 1\n");
+ return 1;
+ }
+ }
+ return 0;
+}
+
+
+
+void FilePNG::get_parameters(BC_WindowBase *parent_window,
+ Asset *asset,
+ BC_WindowBase* &format_window,
+ int audio_options,
+ int video_options)
+{
+ if(video_options)
+ {
+ PNGConfigVideo *window = new PNGConfigVideo(parent_window, asset);
+ format_window = window;
+ window->create_objects();
+ window->run_window();
+ delete window;
+ }
+}
+
+
+
+
+int FilePNG::can_copy_from(Asset *asset, int64_t position)
+{
+ if(asset->format == FILE_PNG ||
+ asset->format == FILE_PNG_LIST)
+ return 1;
+
+ return 0;
+}
+
+
+int FilePNG::colormodel_supported(int colormodel)
+{
+ if (((colormodel == BC_RGBA8888) && (native_cmodel == BC_RGBA16161616))
+ || ((colormodel == BC_RGB161616) && (native_cmodel == BC_RGBA16161616))
+ || (colormodel == BC_RGB888))
+ {
+ return colormodel;
+ }
+ else if ((colormodel == BC_RGB161616) && (native_cmodel == BC_RGBA8888))
+ {
+ return BC_RGB888;
+ }
+ else
+ {
+ return native_cmodel;
+ }
+}
+
+
+int FilePNG::get_best_colormodel(Asset *asset, int driver)
+{
+ if(asset->png_use_alpha)
+ return BC_RGBA8888;
+ else
+ return BC_RGB888;
+}
+
+
+
+
+int FilePNG::read_frame_header(char *path)
+{
+ int result = 0;
+ int color_type;
+ int color_depth;
+ int num_trans = 0;
+
+ FILE *stream;
+
+ if(!(stream = fopen(path, "rb")))
+ {
+ eprintf("Error while opening \"%s\" for reading. \n%m\n", asset->path);
+ return 1;
+ }
+
+ png_structp png_ptr;
+ png_infop info_ptr;
+ png_infop end_info = 0;
+ png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
+ info_ptr = png_create_info_struct(png_ptr);
+ png_init_io(png_ptr, stream);
+
+
+ png_read_info(png_ptr, info_ptr);
+
+ asset->width = png_get_image_width(png_ptr, info_ptr);
+ asset->height = png_get_image_height(png_ptr, info_ptr);
+
+ asset->interlace_mode = BC_ILACE_MODE_NOTINTERLACED;
+
+ color_type = png_get_color_type(png_ptr, info_ptr);
+ color_depth = png_get_bit_depth(png_ptr,info_ptr);
+
+ png_get_tRNS(png_ptr, info_ptr, NULL, &num_trans, NULL);
+
+ if (color_depth == 16)
+ {
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ native_cmodel = BC_RGBA16161616;
+ }
+ else
+ {
+ native_cmodel = BC_RGB161616;
+ }
+ }
+ else
+ if ((color_type & PNG_COLOR_MASK_ALPHA)
+ || (num_trans > 0))
+ {
+ native_cmodel = BC_RGBA8888;
+ }
+ else
+ {
+ native_cmodel = BC_RGB888;
+ }
+
+
+ png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+ fclose(stream);
+
+
+
+ return result;
+}
+
+
+
+
+static void read_function(png_structp png_ptr,
+ png_bytep data,
+ png_uint_32 length)
+{
+ VFrame *input = (VFrame*)png_get_io_ptr(png_ptr);
+
+ memcpy(data, input->get_data() + input->get_compressed_size(), length);
+ input->set_compressed_size(input->get_compressed_size() + length);
+}
+
+static void write_function(png_structp png_ptr, png_bytep data, png_uint_32 length)
+{
+ VFrame *output = (VFrame*)png_get_io_ptr(png_ptr);
+ long total_length = output->get_compressed_size() + length;
+ if(output->get_compressed_allocated() < total_length) {
+ long new_length = 2 * (output->get_compressed_allocated() + length);
+ output->allocate_compressed_data(new_length);
+ }
+ memcpy(output->get_data() + output->get_compressed_size(), data, length);
+ output->set_compressed_size(total_length);
+}
+
+static void flush_function(png_structp png_ptr)
+{
+}
+
+
+int FilePNG::write_frame(VFrame *frame, VFrame *data, FrameWriterUnit *unit)
+{
+ PNGUnit *png_unit = (PNGUnit*)unit;
+ png_structp png_ptr = 0;
+ png_infop info_ptr = 0;
+ VFrame *output_frame;
+ int result = 1;
+ data->set_compressed_size(0);
+//printf("FilePNG::write_frame 1\n");
+ native_cmodel = asset->png_use_alpha ? BC_RGBA8888 : BC_RGB888;
+ if(frame->get_color_model() != native_cmodel)
+ {
+ if(!png_unit->temp_frame) png_unit->temp_frame = new VFrame(0,
+ -1, asset->width, asset->height, native_cmodel, -1);
+
+ png_unit->temp_frame->transfer_from(frame);
+ output_frame = png_unit->temp_frame;
+ }
+ else
+ output_frame = frame;
+
+//printf("FilePNG::write_frame 1\n");
+ png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
+ if( png_ptr && !setjmp(png_jmpbuf(png_ptr)) ) {
+ info_ptr = png_create_info_struct(png_ptr);
+ png_set_write_fn(png_ptr, data,
+ (png_rw_ptr)write_function, (png_flush_ptr)flush_function);
+ png_set_compression_level(png_ptr, 5);
+
+ png_set_IHDR(png_ptr, info_ptr, asset->width, asset->height, 8,
+ asset->png_use_alpha ? PNG_COLOR_TYPE_RGB_ALPHA : PNG_COLOR_TYPE_RGB,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+ png_write_info(png_ptr, info_ptr);
+ png_write_image(png_ptr, output_frame->get_rows());
+ png_write_end(png_ptr, info_ptr);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ result = 0;
+ }
+ else {
+ char error[256]; png_error(png_ptr, error);
+ fprintf(stderr, "FilePNG::write_frame failed: %s\n", error);
+ }
+
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+//printf("FilePNG::write_frame 3 %d\n", data->get_compressed_size());
+ return result;
+}
+
+int FilePNG::read_frame(VFrame *output, VFrame *input)
+{
+ png_structp png_ptr;
+ png_infop info_ptr;
+ png_infop end_info = 0;
+ int result = 0;
+ int color_type;
+ int color_depth;
+ int colormodel;
+ int size = input->get_compressed_size();
+ input->set_compressed_size(0);
+
+
+ //printf("FilePNG::read_frame 1 %d %d\n", native_cmodel, output->get_color_model());
+ png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
+ info_ptr = png_create_info_struct(png_ptr);
+ png_set_read_fn(png_ptr, input, (png_rw_ptr)read_function);
+ png_read_info(png_ptr, info_ptr);
+
+ int png_color_type = png_get_color_type(png_ptr, info_ptr);
+ if (png_color_type == PNG_COLOR_TYPE_GRAY ||
+ png_color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ png_set_gray_to_rgb(png_ptr);
+ }
+
+ colormodel = output->get_color_model();
+ color_type = png_get_color_type(png_ptr, info_ptr);
+ color_depth = png_get_bit_depth(png_ptr,info_ptr);
+
+ if (((native_cmodel == BC_RGBA16161616)||(native_cmodel == BC_RGB161616))
+ && ((colormodel == BC_RGBA8888)||(colormodel == BC_RGB888)))
+ {
+ png_set_strip_16(png_ptr);
+ }
+
+ /* If we're dropping the alpha channel, use the background color of the image
+ otherwise, use black */
+ if (((native_cmodel == BC_RGBA16161616)||(native_cmodel == BC_RGBA8888))
+ && ((colormodel == BC_RGB161616)||(colormodel == BC_RGB888)))
+ {
+ png_color_16 my_background;
+ png_color_16p image_background;
+
+ memset(&my_background,0,sizeof(png_color_16));
+
+ if (png_get_bKGD(png_ptr, info_ptr, &image_background))
+ {
+ png_set_background(png_ptr, image_background, PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ }
+ else
+ {
+ png_set_background(png_ptr, &my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+ }
+ }
+
+ /* Little endian */
+ if ((color_depth == 16)
+ &&((colormodel == BC_RGBA16161616)||(colormodel == BC_RGB161616)))
+ {
+ png_set_swap(png_ptr);
+ }
+
+ if (!(color_type & PNG_COLOR_MASK_COLOR))
+ {
+ png_set_gray_to_rgb(png_ptr);
+ }
+
+ if (color_type & PNG_COLOR_MASK_PALETTE)
+ {
+ png_set_palette_to_rgb(png_ptr);
+ }
+
+ if (color_depth <= 8)
+ {
+ png_set_expand(png_ptr);
+ }
+
+/* read the image */
+ png_read_image(png_ptr, output->get_rows());
+//printf("FilePNG::read_frame 3\n");
+ png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+
+ input->set_compressed_size(size);
+
+//printf("FilePNG::read_frame 4\n");
+ return result;
+}
+
+FrameWriterUnit* FilePNG::new_writer_unit(FrameWriter *writer)
+{
+ return new PNGUnit(this, writer);
+}
+
+
+
+
+
+
+
+
+
+
+
+
+PNGUnit::PNGUnit(FilePNG *file, FrameWriter *writer)
+ : FrameWriterUnit(writer)
+{
+ this->file = file;
+ temp_frame = 0;
+}
+PNGUnit::~PNGUnit()
+{
+ if(temp_frame) delete temp_frame;
+}
+
+
+
+
+
+
+
+
+
+PNGConfigVideo::PNGConfigVideo(BC_WindowBase *parent_window, Asset *asset)
+ : BC_Window(PROGRAM_NAME ": Video Compression",
+ parent_window->get_abs_cursor_x(1),
+ parent_window->get_abs_cursor_y(1),
+ 200,
+ 100)
+{
+ this->parent_window = parent_window;
+ this->asset = asset;
+}
+
+PNGConfigVideo::~PNGConfigVideo()
+{
+}
+
+void PNGConfigVideo::create_objects()
+{
+ lock_window("PNGConfigVideo::create_objects()");
+ int x = 10, y = 10;
+ add_subwindow(new PNGUseAlpha(this, x, y));
+ add_subwindow(new BC_OKButton(this));
+ show_window(1);
+ unlock_window();
+}
+
+int PNGConfigVideo::close_event()
+{
+ set_done(0);
+ return 1;
+}
+
+
+PNGUseAlpha::PNGUseAlpha(PNGConfigVideo *gui, int x, int y)
+ : BC_CheckBox(x, y, gui->asset->png_use_alpha, _("Use alpha"))
+{
+ this->gui = gui;
+}
+
+int PNGUseAlpha::handle_event()
+{
+ gui->asset->png_use_alpha = get_value();
+ return 1;
+}
+
+
+
projects / goodguy / history.git / blobdiff