X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fimage.cc;h=08507ec5f8d8e1517d4bd380c8e50885dc28e22e;hb=df17bbd25da69fc38eb2dcd8b4a2531cf0bab0bc;hp=989187c12fb64b0862c8495930d7292bd09dcc97;hpb=9f01401d91a13f2849cc2d7dbd6768cd32bc3fd6;p=dcpomatic.git diff --git a/src/lib/image.cc b/src/lib/image.cc index 989187c12..08507ec5f 100644 --- a/src/lib/image.cc +++ b/src/lib/image.cc @@ -30,6 +30,7 @@ #include "dcpomatic_socket.h" #include #include +#include extern "C" { #include #include @@ -183,8 +184,8 @@ Image::crop_scale_window ( 0, 1 << 16, 1 << 16 ); - AVPixFmtDescriptor const * desc = av_pix_fmt_desc_get (_pixel_format); - if (!desc) { + AVPixFmtDescriptor const * in_desc = av_pix_fmt_desc_get (_pixel_format); + if (!in_desc) { throw PixelFormatError ("crop_scale_window()", _pixel_format); } @@ -196,16 +197,23 @@ Image::crop_scale_window ( round down so that we don't crop a subsampled pixel until we've cropped all of its Y-channel pixels. */ - int const x = lrintf (bytes_per_pixel(c) * crop.left) & ~ ((int) desc->log2_chroma_w); + int const x = lrintf (bytes_per_pixel(c) * crop.left) & ~ ((int) in_desc->log2_chroma_w); scale_in_data[c] = data()[c] + x + stride()[c] * (crop.top / vertical_factor(c)); } /* Corner of the image within out_size */ Position const corner ((out_size.width - inter_size.width) / 2, (out_size.height - inter_size.height) / 2); + AVPixFmtDescriptor const * out_desc = av_pix_fmt_desc_get (out_format); + if (!out_desc) { + throw PixelFormatError ("crop_scale_window()", out_format); + } + 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 / out->vertical_factor(c)); + /* See the note in the crop loop above */ + int const x = lrintf (out->bytes_per_pixel(c) * corner.x) & ~ ((int) out_desc->log2_chroma_w); + scale_out_data[c] = out->data()[c] + x + out->stride()[c] * (corner.y / out->vertical_factor(c)); } sws_scale ( @@ -246,7 +254,7 @@ Image::scale (dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_fo struct SwsContext* scale_context = sws_getContext ( size().width, size().height, pixel_format(), out_size.width, out_size.height, out_format, - fast ? SWS_FAST_BILINEAR : SWS_BICUBIC, 0, 0, 0 + (fast ? SWS_FAST_BILINEAR : SWS_BICUBIC) | SWS_ACCURATE_RND, 0, 0, 0 ); DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUV_TO_RGB_COUNT); @@ -429,48 +437,18 @@ Image::make_black () void Image::make_transparent () { - if (_pixel_format != AV_PIX_FMT_RGBA) { + if (_pixel_format != AV_PIX_FMT_BGRA) { throw PixelFormatError ("make_transparent()", _pixel_format); } memset (data()[0], 0, sample_size(0).height * stride()[0]); } -template -void -component ( - int n, - Image* base, - shared_ptr other, - shared_ptr 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); - for (int by = start_base_y, oy = start_other_y; by < base_size.height && oy < other_size.height; ++by, ++oy) { - /* base image */ - T* bp = ((T*) (base->data()[n] + by * base->stride()[n])) + start_base_x; - /* overlay image */ - T* op = ((T*) (other->data()[n] + oy * other->stride()[n])); - /* original RGBA for alpha channel */ - uint8_t* rp = rgba->data()[0] + oy * rgba->stride()[0]; - for (int bx = start_base_x, ox = start_other_x; 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; - } - } -} - void Image::alpha_blend (shared_ptr other, Position position) { - /* We're blending RGBA images; first byte is blue, second byte is green, third byte blue, fourth byte alpha */ - DCPOMATIC_ASSERT (other->pixel_format() == AV_PIX_FMT_RGBA); + /* We're blending BGRA images; first byte is blue, second byte is green, third byte red, fourth byte alpha */ + DCPOMATIC_ASSERT (other->pixel_format() == AV_PIX_FMT_BGRA); int const other_bpp = 4; int start_tx = position.x; @@ -510,7 +488,6 @@ Image::alpha_blend (shared_ptr other, Position position) break; } case AV_PIX_FMT_BGRA: - case AV_PIX_FMT_RGBA: { int const this_bpp = 4; for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) { @@ -529,6 +506,25 @@ Image::alpha_blend (shared_ptr other, Position position) } break; } + case AV_PIX_FMT_RGBA: + { + int const this_bpp = 4; + for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) { + uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp; + uint8_t* op = other->data()[0] + oy * other->stride()[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] = op[2] * alpha + tp[0] * (1 - alpha); + tp[1] = op[1] * alpha + tp[1] * (1 - alpha); + tp[2] = op[0] * alpha + tp[2] * (1 - alpha); + tp[3] = op[3] * alpha + tp[3] * (1 - alpha); + + tp += this_bpp; + op += other_bpp; + } + } + break; + } case AV_PIX_FMT_RGB48LE: { int const this_bpp = 6; @@ -537,7 +533,7 @@ Image::alpha_blend (shared_ptr other, Position position) uint8_t* op = other->data()[0] + oy * other->stride()[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; - /* Blend high bytes; the RGBA in op appears to be BGRA */ + /* Blend high bytes */ tp[1] = op[2] * alpha + tp[1] * (1 - alpha); tp[3] = op[1] * alpha + tp[3] * (1 - alpha); tp[5] = op[0] * alpha + tp[5] * (1 - alpha); @@ -586,18 +582,104 @@ Image::alpha_blend (shared_ptr other, Position position) case AV_PIX_FMT_YUV420P: { shared_ptr yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false); - component (0, this, yuv, other, start_tx, start_ty, start_ox, start_oy); - component (1, this, yuv, other, start_tx, start_ty, start_ox, start_oy); - component (2, this, yuv, other, start_tx, start_ty, start_ox, start_oy); + dcp::Size const ts = size(); + dcp::Size const os = yuv->size(); + for (int ty = start_ty, oy = start_oy; ty < ts.height && oy < os.height; ++ty, ++oy) { + int const hty = ty / 2; + int const hoy = oy / 2; + uint8_t* tY = data()[0] + (ty * stride()[0]) + start_tx; + uint8_t* tU = data()[1] + (hty * stride()[1]) + start_tx / 2; + uint8_t* tV = data()[2] + (hty * stride()[2]) + start_tx / 2; + uint8_t* oY = yuv->data()[0] + (oy * yuv->stride()[0]) + start_ox; + uint8_t* oU = yuv->data()[1] + (hoy * yuv->stride()[1]) + start_ox / 2; + uint8_t* oV = yuv->data()[2] + (hoy * yuv->stride()[2]) + start_ox / 2; + uint8_t* alpha = other->data()[0] + (oy * other->stride()[0]) + start_ox * 4; + for (int tx = start_tx, ox = start_ox; tx < ts.width && ox < os.width; ++tx, ++ox) { + float const a = float(alpha[3]) / 255; + *tY = *oY * a + *tY * (1 - a); + *tU = *oU * a + *tU * (1 - a); + *tV = *oV * a + *tV * (1 - a); + ++tY; + ++oY; + if (tx % 2) { + ++tU; + ++tV; + } + if (ox % 2) { + ++oU; + ++oV; + } + alpha += 4; + } + } break; } case AV_PIX_FMT_YUV420P10: + { + shared_ptr yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false); + dcp::Size const ts = size(); + dcp::Size const os = yuv->size(); + for (int ty = start_ty, oy = start_oy; ty < ts.height && oy < os.height; ++ty, ++oy) { + int const hty = ty / 2; + int const hoy = oy / 2; + uint16_t* tY = ((uint16_t *) (data()[0] + (ty * stride()[0]))) + start_tx; + uint16_t* tU = ((uint16_t *) (data()[1] + (hty * stride()[1]))) + start_tx / 2; + uint16_t* tV = ((uint16_t *) (data()[2] + (hty * stride()[2]))) + start_tx / 2; + uint16_t* oY = ((uint16_t *) (yuv->data()[0] + (oy * yuv->stride()[0]))) + start_ox; + uint16_t* oU = ((uint16_t *) (yuv->data()[1] + (hoy * yuv->stride()[1]))) + start_ox / 2; + uint16_t* oV = ((uint16_t *) (yuv->data()[2] + (hoy * yuv->stride()[2]))) + start_ox / 2; + uint8_t* alpha = other->data()[0] + (oy * other->stride()[0]) + start_ox * 4; + for (int tx = start_tx, ox = start_ox; tx < ts.width && ox < os.width; ++tx, ++ox) { + float const a = float(alpha[3]) / 255; + *tY = *oY * a + *tY * (1 - a); + *tU = *oU * a + *tU * (1 - a); + *tV = *oV * a + *tV * (1 - a); + ++tY; + ++oY; + if (tx % 2) { + ++tU; + ++tV; + } + if (ox % 2) { + ++oU; + ++oV; + } + alpha += 4; + } + } + break; + } case AV_PIX_FMT_YUV422P10LE: { shared_ptr yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false); - component (0, this, yuv, other, start_tx, start_ty, start_ox, start_oy); - component (1, this, yuv, other, start_tx, start_ty, start_ox, start_oy); - component (2, this, yuv, other, start_tx, start_ty, start_ox, start_oy); + dcp::Size const ts = size(); + dcp::Size const os = yuv->size(); + for (int ty = start_ty, oy = start_oy; ty < ts.height && oy < os.height; ++ty, ++oy) { + uint16_t* tY = ((uint16_t *) (data()[0] + (ty * stride()[0]))) + start_tx; + uint16_t* tU = ((uint16_t *) (data()[1] + (ty * stride()[1]))) + start_tx / 2; + uint16_t* tV = ((uint16_t *) (data()[2] + (ty * stride()[2]))) + start_tx / 2; + uint16_t* oY = ((uint16_t *) (yuv->data()[0] + (oy * yuv->stride()[0]))) + start_ox; + uint16_t* oU = ((uint16_t *) (yuv->data()[1] + (oy * yuv->stride()[1]))) + start_ox / 2; + uint16_t* oV = ((uint16_t *) (yuv->data()[2] + (oy * yuv->stride()[2]))) + start_ox / 2; + uint8_t* alpha = other->data()[0] + (oy * other->stride()[0]) + start_ox * 4; + for (int tx = start_tx, ox = start_ox; tx < ts.width && ox < os.width; ++tx, ++ox) { + float const a = float(alpha[3]) / 255; + *tY = *oY * a + *tY * (1 - a); + *tU = *oU * a + *tU * (1 - a); + *tV = *oV * a + *tV * (1 - a); + ++tY; + ++oY; + if (tx % 2) { + ++tU; + ++tV; + } + if (ox % 2) { + ++oU; + ++oV; + } + alpha += 4; + } + } break; } default: @@ -744,7 +826,8 @@ Image::allocate () } Image::Image (Image const & other) - : _size (other._size) + : boost::enable_shared_from_this(other) + , _size (other._size) , _pixel_format (other._pixel_format) , _aligned (other._aligned) , _extra_pixels (other._extra_pixels) @@ -1044,8 +1127,8 @@ Image::fade (float f) } } -shared_ptr -Image::ensure_aligned (shared_ptr image) +shared_ptr +Image::ensure_aligned (shared_ptr image) { if (image->aligned()) { return image; @@ -1063,3 +1146,38 @@ Image::memory_used () const } return m; } + +dcp::Data +Image::as_png () const +{ +#ifdef DCPOMATIC_IMAGE_MAGICK + using namespace MagickCore; +#else + using namespace MagickLib; +#endif + + string format; + switch (_pixel_format) { + case AV_PIX_FMT_RGB24: + format = "RGB"; + break; + case AV_PIX_FMT_BGRA: + format = "BGRA"; + break; + default: + DCPOMATIC_ASSERT (false); + break; + } + + shared_ptr use; + if (aligned()) { + use.reset (new Image(shared_from_this(), false)); + } + + Magick::Image m (size().width, size().height, format, CharPixel, (void *) use->data()[0]); + m.magick ("PNG"); + Magick::Blob blob; + m.write (&blob); + /* XXX: could use a subclass of Data here (storing its data in a Blob) */ + return dcp::Data (static_cast(blob.data()), blob.length()); +}