static RGBSpectrum *ReadImageTGA(const std::string &name, int *width,
int *height) {
tga_image img;
tga_result result;
if ((result = tga_read(&img, name.c_str())) != TGA_NOERR) {
Error("Unable to read from TGA file \"%s\" (%s)", name.c_str(),
tga_error(result));
return nullptr;
}
if (tga_is_right_to_left(&img)) tga_flip_horiz(&img);
if (!tga_is_top_to_bottom(&img)) tga_flip_vert(&img);
if (tga_is_colormapped(&img)) tga_color_unmap(&img);
*width = img.width;
*height = img.height;
// "Unpack" the pixels (origin in the lower left corner).
// TGA pixels are in BGRA format.
RGBSpectrum *ret = new RGBSpectrum[*width * *height];
RGBSpectrum *dst = ret;
for (int y = *height - 1; y >= 0; y--)
for (int x = 0; x < *width; x++) {
uint8_t *src = tga_find_pixel(&img, x, y);
if (tga_is_mono(&img))
*dst++ = RGBSpectrum(*src / 255.f);
else {
Float c[3];
c[2] = src[0] / 255.f;
c[1] = src[1] / 255.f;
c[0] = src[2] / 255.f;
*dst++ = RGBSpectrum::FromRGB(c);
}
}
tga_free_buffers(&img);
Info("Read TGA image %s (%d x %d)", name.c_str(), *width, *height);
return ret;
}
// TGA Function Definitions
void WriteImageTGA(const std::string &name, const uint8_t *pixels, int xRes,
int yRes, int totalXRes, int totalYRes, int xOffset,
int yOffset) {
// Reformat to BGR layout.
std::unique_ptr<uint8_t> outBuf(new uint8_t[3 * xRes * yRes]);
uint8_t *dst = outBuf.get();
const uint8_t *src = pixels;
for (int y = 0; y < yRes; ++y) {
for (int x = 0; x < xRes; ++x) {
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
dst += 3;
src += 3;
}
}
tga_result result;
if ((result = tga_write_bgr(name.c_str(), outBuf.get(), xRes, yRes, 24)) !=
TGA_NOERR)
Error("Unable to write output file \"%s\" (%s)", name.c_str(),
tga_error(result));
}
static int write_image_tga(void * priv, gavl_video_frame_t * frame)
{
tga_t * tga = priv;
gavl_video_frame_t * tmp_frame;
int result, ret = 1;
errno = 0;
if(tga->format.pixelformat == GAVL_RGBA_32)
{
tmp_frame = gavl_video_frame_create(&tga->format);
gavl_video_frame_copy(&tga->format, tmp_frame, frame);
if(tga->rle)
{
result = tga_write_rgb(tga->filename, tmp_frame->planes[0],
tga->format.image_width,
tga->format.image_height, 32,
frame->strides[0]);
}
else
{
result =tga_write_rgb_rle(tga->filename, tmp_frame->planes[0],
tga->format.image_width,
tga->format.image_height, 32,
frame->strides[0]);
}
gavl_video_frame_destroy(tmp_frame);
}
else
{
if(tga->rle)
{
result = tga_write_bgr(tga->filename, frame->planes[0],
tga->format.image_width,
tga->format.image_height, 24,
frame->strides[0]);
}
else
{
result = tga_write_bgr_rle(tga->filename, frame->planes[0],
tga->format.image_width,
tga->format.image_height, 24,
frame->strides[0]);
}
}
if(result != TGA_NOERR)
{
if(errno)
bg_log(BG_LOG_ERROR, LOG_DOMAIN, "Cannot save %s: %s",
tga->filename, strerror(errno));
else
bg_log(BG_LOG_ERROR, LOG_DOMAIN, "Cannot save %s: %s",
tga->filename, tga_error(result));
ret = 0;
}
free(tga->filename);
tga->filename = NULL;
return ret;
}
