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tiff: Refactor
Now we support all the formats.
This commit is contained in:
Benjamin Otte
parent
c7e36bcf22
commit
800246402f
@ -220,129 +220,89 @@ tiff_open_write (GBytes **result)
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NULL, NULL);
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}
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/* }}} */
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/* {{{ Format conversion */
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static void
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flip_02 (guchar *data,
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int width,
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int height,
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int stride)
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{
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gsize x, y;
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for (y = 0; y < height; y++)
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{
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for (x = 0; x < width; x++)
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{
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guchar tmp;
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tmp = data[x * 4];
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data[x * 4] = data[x * 4 + 2];
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data[x * 4 + 2] = tmp;
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}
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data += stride;
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}
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}
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/* }}} */
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/* {{{ Public API */
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static struct {
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typedef struct _FormatData FormatData;
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struct _FormatData {
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GdkMemoryFormat format;
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guint16 bits_per_sample;
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guint16 samples_per_pixel;
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guint16 sample_format;
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} format_data[] = {
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{ GDK_MEMORY_R8G8B8A8_PREMULTIPLIED, 8, 4, SAMPLEFORMAT_UINT },
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{ GDK_MEMORY_R8G8B8, 8, 3, SAMPLEFORMAT_UINT },
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{ GDK_MEMORY_R16G16B16, 16, 3, SAMPLEFORMAT_UINT },
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{ GDK_MEMORY_R16G16B16A16_PREMULTIPLIED, 16, 4, SAMPLEFORMAT_UINT },
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{ GDK_MEMORY_R16G16B16_FLOAT, 16, 3, SAMPLEFORMAT_IEEEFP },
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{ GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED, 16, 4, SAMPLEFORMAT_IEEEFP },
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{ GDK_MEMORY_R32G32B32_FLOAT, 32, 3, SAMPLEFORMAT_IEEEFP },
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{ GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED, 32, 4, SAMPLEFORMAT_IEEEFP },
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guint16 alpha_samples;
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};
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static const FormatData format_data[] = {
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[GDK_MEMORY_B8G8R8A8_PREMULTIPLIED] = { GDK_MEMORY_R8G8B8A8_PREMULTIPLIED, 8, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_ASSOCALPHA },
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[GDK_MEMORY_A8R8G8B8_PREMULTIPLIED] = { GDK_MEMORY_R8G8B8A8_PREMULTIPLIED, 8, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_ASSOCALPHA },
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[GDK_MEMORY_R8G8B8A8_PREMULTIPLIED] = { GDK_MEMORY_R8G8B8A8_PREMULTIPLIED, 8, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_ASSOCALPHA },
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[GDK_MEMORY_B8G8R8A8] = { GDK_MEMORY_R8G8B8A8, 8, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_UNASSALPHA },
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[GDK_MEMORY_A8R8G8B8] = { GDK_MEMORY_R8G8B8A8, 8, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_UNASSALPHA },
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[GDK_MEMORY_R8G8B8A8] = { GDK_MEMORY_R8G8B8A8, 8, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_UNASSALPHA },
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[GDK_MEMORY_A8B8G8R8] = { GDK_MEMORY_R8G8B8A8, 8, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_UNASSALPHA },
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[GDK_MEMORY_R8G8B8] = { GDK_MEMORY_R8G8B8, 8, 3, SAMPLEFORMAT_UINT, 0 },
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[GDK_MEMORY_B8G8R8] = { GDK_MEMORY_R8G8B8, 8, 3, SAMPLEFORMAT_UINT, 0 },
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[GDK_MEMORY_R16G16B16] = { GDK_MEMORY_R16G16B16, 16, 3, SAMPLEFORMAT_UINT, 0 },
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[GDK_MEMORY_R16G16B16A16_PREMULTIPLIED] = { GDK_MEMORY_R16G16B16A16_PREMULTIPLIED, 16, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_ASSOCALPHA },
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[GDK_MEMORY_R16G16B16A16] = { GDK_MEMORY_R16G16B16A16, 16, 4, SAMPLEFORMAT_UINT, EXTRASAMPLE_UNASSALPHA },
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[GDK_MEMORY_R16G16B16_FLOAT] = { GDK_MEMORY_R16G16B16_FLOAT, 16, 3, SAMPLEFORMAT_IEEEFP, 0 },
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[GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED] = { GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED, 16, 4, SAMPLEFORMAT_IEEEFP, EXTRASAMPLE_ASSOCALPHA },
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[GDK_MEMORY_R16G16B16A16_FLOAT] = { GDK_MEMORY_R16G16B16A16_FLOAT, 16, 4, SAMPLEFORMAT_IEEEFP, EXTRASAMPLE_UNASSALPHA },
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[GDK_MEMORY_R32G32B32_FLOAT] = { GDK_MEMORY_R32G32B32_FLOAT, 32, 3, SAMPLEFORMAT_IEEEFP, 0 },
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[GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED] = { GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED, 32, 4, SAMPLEFORMAT_IEEEFP, EXTRASAMPLE_ASSOCALPHA },
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[GDK_MEMORY_R32G32B32A32_FLOAT] = { GDK_MEMORY_R32G32B32A32_FLOAT, 32, 4, SAMPLEFORMAT_IEEEFP, EXTRASAMPLE_UNASSALPHA },
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};
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/* if this fails, somebody forgot to add formats above */
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G_STATIC_ASSERT (G_N_ELEMENTS (format_data) == GDK_MEMORY_N_FORMATS);
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GBytes *
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gdk_save_tiff (GdkTexture *texture)
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{
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TIFF *tif;
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int width, height, stride;
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guint16 bits_per_sample = 0;
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guint16 samples_per_pixel = 0;
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guint16 sample_format = 0;
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const guchar *line;
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const guchar *data;
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guchar *new_data = NULL;
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GBytes *result = NULL;
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GdkTexture *memory_texture;
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GdkMemoryTexture *memtex;
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GdkMemoryFormat format;
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const FormatData *fdata = NULL;
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tif = tiff_open_write (&result);
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width = gdk_texture_get_width (texture);
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height = gdk_texture_get_height (texture);
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format = gdk_texture_get_format (texture);
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memory_texture = GDK_TEXTURE (gdk_memory_texture_from_texture (texture, format));
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fdata = &format_data[format];
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for (int i = 0; i < G_N_ELEMENTS (format_data); i++)
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{
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if (format == format_data[i].format)
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{
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data = gdk_memory_texture_get_data (GDK_MEMORY_TEXTURE (memory_texture));
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stride = gdk_memory_texture_get_stride (GDK_MEMORY_TEXTURE (memory_texture));
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bits_per_sample = format_data[i].bits_per_sample;
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samples_per_pixel = format_data[i].samples_per_pixel;
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sample_format = format_data[i].sample_format;
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break;
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}
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}
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if (bits_per_sample == 0)
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{
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/* An 8-bit format we don't have in the table, handle
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* it by converting to R8G8B8A8_PREMULTIPLIED
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*/
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stride = width * 4;
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new_data = g_malloc (stride * height);
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gdk_texture_download (memory_texture, new_data, stride);
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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flip_02 (new_data, width, height, stride);
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#endif
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data = new_data;
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bits_per_sample = 8;
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samples_per_pixel = 4;
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sample_format = SAMPLEFORMAT_UINT;
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}
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if (fdata == NULL)
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fdata = &format_data[0];
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TIFFSetField (tif, TIFFTAG_SOFTWARE, "GTK");
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TIFFSetField (tif, TIFFTAG_IMAGEWIDTH, width);
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TIFFSetField (tif, TIFFTAG_IMAGELENGTH, height);
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TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
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TIFFSetField (tif, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
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TIFFSetField (tif, TIFFTAG_SAMPLEFORMAT, sample_format);
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TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, fdata->bits_per_sample);
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TIFFSetField (tif, TIFFTAG_SAMPLESPERPIXEL, fdata->samples_per_pixel);
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TIFFSetField (tif, TIFFTAG_SAMPLEFORMAT, fdata->sample_format);
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TIFFSetField (tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
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TIFFSetField (tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
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// TODO: save gamma / colorspace
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if (samples_per_pixel > 3)
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{
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guint16 extra_samples[] = { EXTRASAMPLE_ASSOCALPHA };
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TIFFSetField (tif, TIFFTAG_EXTRASAMPLES, 1, extra_samples);
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}
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if (fdata->alpha_samples)
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TIFFSetField (tif, TIFFTAG_EXTRASAMPLES, 1, &fdata->alpha_samples);
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TIFFSetField (tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
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TIFFSetField (tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
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memtex = gdk_memory_texture_from_texture (texture, fdata->format);
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data = gdk_memory_texture_get_data (memtex);
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stride = gdk_memory_texture_get_stride (memtex);
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line = (const guchar *)data;
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for (int y = 0; y < height; y++)
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{
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if (TIFFWriteScanline (tif, (void *)line, y, 0) == -1)
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{
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TIFFClose (tif);
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g_free (new_data);
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g_object_unref (memory_texture);
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g_object_unref (memtex);
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return NULL;
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}
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@ -354,8 +314,7 @@ gdk_save_tiff (GdkTexture *texture)
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g_assert (result);
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g_free (new_data);
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g_object_unref (memory_texture);
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g_object_unref (memtex);
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return result;
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}
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@ -407,6 +366,7 @@ gdk_load_tiff (GBytes *input_bytes,
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guint16 sample_format;
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guint16 orientation;
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guint32 width, height;
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guint16 alpha_samples;
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GdkMemoryFormat format;
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guchar *data, *line;
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gsize stride;
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@ -434,30 +394,35 @@ gdk_load_tiff (GBytes *input_bytes,
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guint16 *extra_types;
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if (!TIFFGetField (tif, TIFFTAG_EXTRASAMPLES, &extra, &extra_types))
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extra = 0;
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alpha_samples = 0;
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if (extra == 0 || extra_types[0] != EXTRASAMPLE_ASSOCALPHA)
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alpha_samples = extra_types[0];
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if (alpha_samples != 0 && alpha_samples != EXTRASAMPLE_ASSOCALPHA && alpha_samples != EXTRASAMPLE_UNASSALPHA)
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{
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texture = load_fallback (tif, error);
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TIFFClose (tif);
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return texture;
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}
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}
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else
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alpha_samples = 0;
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format = 0;
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for (int i = 0; i < G_N_ELEMENTS (format_data); i++)
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for (format = 0; format < G_N_ELEMENTS (format_data); format++)
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{
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if (format_data[i].sample_format == sample_format &&
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format_data[i].bits_per_sample == bits_per_sample &&
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format_data[i].samples_per_pixel == samples_per_pixel)
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/* not a native format */
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if (format_data[format].format != format)
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continue;
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if (format_data[format].sample_format == sample_format &&
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format_data[format].bits_per_sample == bits_per_sample &&
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format_data[format].samples_per_pixel == samples_per_pixel &&
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format_data[format].alpha_samples == alpha_samples)
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{
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format = format_data[i].format;
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break;
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}
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}
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if (format == 0 ||
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if (format == G_N_ELEMENTS(format_data) ||
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photometric != PHOTOMETRIC_RGB ||
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planarconfig != PLANARCONFIG_CONTIG ||
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TIFFIsTiled (tif) ||
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