}
break;
case PIX_FMT_RGB24:
+ case PIX_FMT_RGBA:
return size().height;
default:
assert (false);
case PIX_FMT_YUV420P:
return 3;
case PIX_FMT_RGB24:
+ case PIX_FMT_RGBA:
return 1;
default:
assert (false);
return 0;
}
+shared_ptr<Image>
+Image::scale (Size out_size, Scaler const * scaler) const
+{
+ assert (scaler);
+
+ shared_ptr<Image> scaled (new SimpleImage (pixel_format(), out_size));
+
+ struct SwsContext* scale_context = sws_getContext (
+ size().width, size().height, pixel_format(),
+ out_size.width, out_size.height, pixel_format(),
+ scaler->ffmpeg_id (), 0, 0, 0
+ );
+
+ sws_scale (
+ scale_context,
+ data(), line_size(),
+ 0, size().height,
+ scaled->data (), scaled->line_size ()
+ );
+
+ sws_freeContext (scale_context);
+
+ return scaled;
+}
+
/** Scale this image to a given size and convert it to RGB.
* @param out_size Output image size in pixels.
* @param scaler Scaler to use.
*/
-shared_ptr<RGBFrameImage>
+shared_ptr<Image>
Image::scale_and_convert_to_rgb (Size out_size, int padding, Scaler const * scaler) const
{
assert (scaler);
Size content_size = out_size;
content_size.width -= (padding * 2);
- shared_ptr<RGBFrameImage> rgb (new RGBFrameImage (content_size));
+ shared_ptr<Image> rgb (new SimpleImage (PIX_FMT_RGB24, content_size));
struct SwsContext* scale_context = sws_getContext (
size().width, size().height, pixel_format(),
scheme of things.
*/
if (padding > 0) {
- shared_ptr<RGBFrameImage> padded_rgb (new RGBFrameImage (out_size));
+ shared_ptr<Image> padded_rgb (new SimpleImage (PIX_FMT_RGB24, out_size));
padded_rgb->make_black ();
/* XXX: we are cheating a bit here; we know the frame is RGB so we can
* @param pp Flags for the required set of post processes.
* @return Post-processed image.
*/
-shared_ptr<PostProcessImage>
+shared_ptr<Image>
Image::post_process (string pp) const
{
- shared_ptr<PostProcessImage> out (new PostProcessImage (PIX_FMT_YUV420P, size ()));
+ shared_ptr<Image> out (new SimpleImage (PIX_FMT_YUV420P, size ()));
pp_mode* mode = pp_get_mode_by_name_and_quality (pp.c_str (), PP_QUALITY_MAX);
pp_context* context = pp_get_context (size().width, size().height, PP_FORMAT_420 | PP_CPU_CAPS_MMX2);
}
}
+void
+Image::alpha_blend (shared_ptr<Image> other, Position position)
+{
+ /* Only implemented for RGBA onto RGB24 so far */
+ assert (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGBA);
+
+ int start_tx = position.x;
+ int start_ox = 0;
+
+ if (start_tx < 0) {
+ start_ox = -start_tx;
+ start_tx = 0;
+ }
+
+ int start_ty = position.y;
+ int start_oy = 0;
+
+ if (start_ty < 0) {
+ start_oy = -start_ty;
+ start_ty = 0;
+ }
+
+ for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
+ uint8_t* tp = data()[0] + ty * line_size()[0] + position.x * 3;
+ uint8_t* op = other->data()[0] + oy * other->line_size()[0];
+ for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
+ float const alpha = float (op[3]) / 255;
+ tp[0] = (tp[0] * (1 - alpha)) + op[0] * alpha;
+ tp[1] = (tp[1] * (1 - alpha)) + op[1] * alpha;
+ tp[2] = (tp[2] * (1 - alpha)) + op[2] * alpha;
+ tp += 3;
+ op += 4;
+ }
+ }
+}
+
/** Construct a SimpleImage of a given size and format, allocating memory
* as required.
*
: Image (p)
, _size (s)
{
- _data = (uint8_t **) av_malloc (components() * sizeof (uint8_t *));
- _line_size = (int *) av_malloc (components() * sizeof (int));
+ _data = (uint8_t **) av_malloc (4 * sizeof (uint8_t *));
+ _data[0] = _data[1] = _data[2] = _data[3] = 0;
+ _line_size = (int *) av_malloc (4);
+ _line_size[0] = _line_size[1] = _line_size[2] = _line_size[3] = 0;
+
+ switch (p) {
+ case PIX_FMT_RGB24:
+ _line_size[0] = round_up (s.width * 3, 32);
+ break;
+ case PIX_FMT_RGBA:
+ _line_size[0] = round_up (s.width * 4, 32);
+ break;
+ case PIX_FMT_YUV420P:
+ _line_size[0] = round_up (s.width, 32);
+ _line_size[1] = round_up (s.width / 2, 32);
+ _line_size[2] = round_up (s.width / 2, 32);
+ break;
+ default:
+ assert (false);
+ }
for (int i = 0; i < components(); ++i) {
- _data[i] = 0;
- _line_size[i] = 0;
+ _data[i] = (uint8_t *) av_malloc (_line_size[i] * lines (i));
}
}
av_free (_line_size);
}
-/** Set the size in bytes of each horizontal line of a given component.
- * @param i Component index.
- * @param s Size of line in bytes.
- */
-void
-SimpleImage::set_line_size (int i, int s)
-{
- _line_size[i] = s;
- _data[i] = (uint8_t *) av_malloc (s * lines (i));
-}
-
uint8_t **
SimpleImage::data () const
{
{
return _size;
}
-
-PostProcessImage::PostProcessImage (PixelFormat p, Size s)
- : Image (p)
- , _size (s)
-{
- _data = new uint8_t*[4];
- _line_size = new int[4];
-
- for (int i = 0; i < 4; ++i) {
- _data[i] = (uint8_t *) av_malloc (s.width * s.height);
- _line_size[i] = s.width;
- }
-}
-
-PostProcessImage::~PostProcessImage ()
-{
- for (int i = 0; i < 4; ++i) {
- av_free (_data[i]);
- }
-
- delete[] _data;
- delete[] _line_size;
-}
-
-uint8_t **
-PostProcessImage::data () const
-{
- return _data;
-}
-
-int *
-PostProcessImage::line_size () const
-{
- return _line_size;
-}
-
-Size
-PostProcessImage::size () const
-{
- return _size;
-}
projects / dcpomatic.git / blobdiff