int
Image::horizontal_factor (int n) const
{
- int horizontal_factor = 1;
- if (n > 0) {
- AVPixFmtDescriptor const * d = av_pix_fmt_desc_get (_pixel_format);
- if (!d) {
- throw PixelFormatError ("sample_size()", _pixel_format);
- }
- horizontal_factor = pow (2.0f, d->log2_chroma_w);
+ if (n == 0) {
+ return 1;
}
- return horizontal_factor;
+
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError ("sample_size()", _pixel_format);
+ }
+
+ return pow (2.0f, d->log2_chroma_w);
}
/** @param n Component index.
uint8_t* scale_out_data[out->planes()];
for (int c = 0; c < out->planes(); ++c) {
- scale_out_data[c] = out->data()[c] + lrintf (out->bytes_per_pixel(c) * corner.x) + out->stride()[c] * corner.y;
+ scale_out_data[c] = out->data()[c] + lrintf (out->bytes_per_pixel(c) * corner.x) + out->stride()[c] * (corner.y / out->vertical_factor(c));
}
sws_scale (
return out;
}
+shared_ptr<Image>
+Image::convert_pixel_format (dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned, bool fast) const
+{
+ return scale(size(), yuv_to_rgb, out_format, out_aligned, fast);
+}
+
/** @param out_size Size to scale to.
* @param yuv_to_rgb YUVToRGB transform transform to use, if required.
* @param out_format Output pixel format.
memset (data()[0], 0, sample_size(0).height * stride()[0]);
}
+template <class T>
+void
+component (
+ int n,
+ Image* base,
+ shared_ptr<const Image> other,
+ shared_ptr<const Image> rgba,
+ int start_base_x, int start_base_y,
+ int start_other_x, int start_other_y
+ )
+{
+ dcp::Size const base_size = base->sample_size(n);
+ dcp::Size const other_size = other->sample_size(n);
+ int const bhf = base->horizontal_factor(n);
+ int const bvf = base->vertical_factor(n);
+ int const ohf = other->horizontal_factor(n);
+ int const ovf = other->vertical_factor(n);
+ for (int by = start_base_y / bvf, oy = start_other_y / ovf, ry = start_other_y; by < base_size.height && oy < other_size.height; ++by, ++oy, ry += ovf) {
+ /* base image */
+ T* bp = ((T*) (base->data()[n] + by * base->stride()[n])) + start_base_x / bhf;
+ /* overlay image */
+ T* op = ((T*) (other->data()[n] + oy * other->stride()[n]));
+ /* original RGBA for alpha channel */
+ uint8_t* rp = rgba->data()[0] + ry * rgba->stride()[0];
+ for (int bx = start_base_x / bhf, ox = start_other_x / ohf; bx < base_size.width && ox < other_size.width; ++bx, ++ox) {
+ float const alpha = float (rp[3]) / 255;
+ *bp = *op * alpha + *bp * (1 - alpha);
+ ++bp;
+ ++op;
+ rp += 4 * ohf;
+ }
+ }
+}
+
void
Image::alpha_blend (shared_ptr<const Image> other, Position<int> position)
{
break;
}
case AV_PIX_FMT_YUV420P:
+ {
+ shared_ptr<Image> yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false);
+ component<uint8_t> (0, this, yuv, other, start_tx, start_ty, start_ox, start_oy);
+ component<uint8_t> (1, this, yuv, other, start_tx, start_ty, start_ox, start_oy);
+ component<uint8_t> (2, this, yuv, other, start_tx, start_ty, start_ox, start_oy);
+ break;
+ }
case AV_PIX_FMT_YUV420P10:
+ case AV_PIX_FMT_YUV422P10LE:
{
- shared_ptr<Image> yuv = other->scale (other->size(), dcp::YUV_TO_RGB_REC709, _pixel_format, false, false);
-
- for (int i = 0; i < 3; ++i) {
- dcp::Size const tsize = sample_size(i);
- dcp::Size const osize = yuv->sample_size(i);
- int const tbpp = ceil (bytes_per_pixel(i) / horizontal_factor(i));
- int const obpp = ceil (yuv->bytes_per_pixel(i) / yuv->horizontal_factor(i));
- int const abpp = other->bytes_per_pixel(0);
- start_tx /= horizontal_factor (i);
- start_ty /= vertical_factor (i);
- start_ox /= yuv->horizontal_factor (i);
- start_oy /= yuv->vertical_factor (i);
- for (int ty = start_ty, oy = start_oy; ty < tsize.height && oy < osize.height; ++ty, ++oy) {
- /* this image */
- uint8_t* tp = data()[i] + ty * stride()[i] + start_tx * tbpp;
- /* overlay image */
- uint8_t* op = yuv->data()[i] + oy * yuv->stride()[i];
- /* original RGBA for alpha channel */
- uint8_t* ap = other->data()[0] + oy * other->stride()[0];
- for (int tx = start_tx, ox = start_ox; tx < tsize.width && ox < osize.width; ++tx, ++ox) {
- float const alpha = float (ap[3]) / 255;
- *tp = *op * alpha + *tp * (1 - alpha);
- tp += tbpp;
- op += obpp;
- ap += abpp;
- }
- }
- }
+ shared_ptr<Image> yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false);
+ component<uint16_t> (0, this, yuv, other, start_tx, start_ty, start_ox, start_oy);
+ component<uint8_t> (1, this, yuv, other, start_tx, start_ty, start_ox, start_oy);
+ component<uint8_t> (2, this, yuv, other, start_tx, start_ty, start_ox, start_oy);
break;
}
default:
throw PixelFormatError ("fade()", _pixel_format);
}
}
+
+shared_ptr<Image>
+Image::ensure_aligned (shared_ptr<Image> image)
+{
+ if (image->aligned()) {
+ return image;
+ }
+
+ return shared_ptr<Image> (new Image (image, true));
+}
+
+size_t
+Image::memory_used () const
+{
+ size_t m = 0;
+ for (int i = 0; i < planes(); ++i) {
+ m += _stride[i] * sample_size(i).height;
+ }
+ return m;
+}
projects / dcpomatic.git / blobdiff