mirror of
https://github.com/lxsang/antd-wvnc-plugin.git
synced 2024-12-27 04:18:22 +01:00
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
void EncodeJPEG(boost::uint8_t *rgb, const int &width, const int &height,
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boost::shared_array<boost::uint8_t> &outbuffer, int *size) {
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jpeg_compress_struct cinfo = {0};
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jpeg_error_mgr jerror = {0};
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jerror.trace_level = 10;
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cinfo.err = jpeg_std_error(&jerror);
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jerror.trace_level = 10;
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cinfo.err->trace_level = 10;
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jpeg_create_compress(&cinfo);
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boost::uint8_t *jpeg_buffer_raw = NULL;
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unsigned long outbuffer_size = 0;
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jpeg_mem_dest(&cinfo, &jpeg_buffer_raw, &outbuffer_size);
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cinfo.image_width = width;
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cinfo.image_height = height;
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cinfo.input_components = 3;
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cinfo.in_color_space = JCS_RGB;
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jpeg_set_defaults(&cinfo);
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jpeg_set_quality(&cinfo, 100, false);
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jpeg_start_compress(&cinfo, true);
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JSAMPROW row_pointer[1];
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unsigned counter = 0;
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while (cinfo.next_scanline < cinfo.image_height) {
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row_pointer[0] = (JSAMPROW)(&rgb[cinfo.next_scanline * width * 3]);
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unsigned return_code = jpeg_write_scanlines(&cinfo, row_pointer, 1);
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}
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jpeg_finish_compress(&cinfo);
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jpeg_destroy_compress(&cinfo);
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outbuffer.reset(new boost::uint8_t[outbuffer_size]);
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std::memcpy(outbuffer.get(), jpeg_buffer_raw, outbuffer_size);
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*size = outbuffer_size;
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std::free(jpeg_buffer_raw);
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} |