X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fimage.cc;h=bc64ba3b82373cb34bce1aff4e0f450d93ce5b29;hb=cb990adba9c57e5107ef2aa9716cf0a26c1df83d;hp=c3b1ca77afded0cc70270fb097d40a6b989a2bfa;hpb=2e504b33eb9f38cac629ad31b7c107fb0cf5efda;p=dcpomatic.git diff --git a/src/lib/image.cc b/src/lib/image.cc index c3b1ca77a..bc64ba3b8 100644 --- a/src/lib/image.cc +++ b/src/lib/image.cc @@ -26,12 +26,13 @@ extern "C" { #include #include #include -#include } #include "image.h" #include "exceptions.h" #include "scaler.h" #include "timer.h" +#include "rect.h" +#include "md5_digester.h" #include "i18n.h" @@ -39,6 +40,7 @@ using std::string; using std::min; using std::cout; using std::cerr; +using std::list; using boost::shared_ptr; using dcp::Size; @@ -319,6 +321,9 @@ Image::make_black () case PIX_FMT_RGBA: case PIX_FMT_ABGR: case PIX_FMT_BGRA: + case PIX_FMT_RGB555LE: + case PIX_FMT_RGB48LE: + case PIX_FMT_RGB48BE: memset (data()[0], 0, lines(0) * stride()[0]); break; @@ -343,19 +348,32 @@ Image::make_black () } } +void +Image::make_transparent () +{ + if (_pixel_format != PIX_FMT_RGBA) { + throw PixelFormatError ("make_transparent()", _pixel_format); + } + + memset (data()[0], 0, lines(0) * stride()[0]); +} + void Image::alpha_blend (shared_ptr other, Position position) { - int this_bpp = 0; - int other_bpp = 0; + assert (other->pixel_format() == PIX_FMT_RGBA); + int const other_bpp = 4; - if (_pixel_format == PIX_FMT_BGRA && other->pixel_format() == PIX_FMT_RGBA) { + int this_bpp = 0; + switch (_pixel_format) { + case PIX_FMT_BGRA: + case PIX_FMT_RGBA: this_bpp = 4; - other_bpp = 4; - } else if (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGBA) { + break; + case PIX_FMT_RGB24: this_bpp = 3; - other_bpp = 4; - } else { + break; + default: assert (false); } @@ -376,13 +394,15 @@ Image::alpha_blend (shared_ptr other, Position position) } 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] + position.x * this_bpp; + 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] = (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[0] = op[0] + (tp[0] * (1 - alpha)); + tp[1] = op[1] + (tp[1] * (1 - alpha)); + tp[2] = op[2] + (tp[2] * (1 - alpha)); + tp[3] = op[3] + (tp[3] * (1 - alpha)); + tp += this_bpp; op += other_bpp; } @@ -500,8 +520,13 @@ Image::allocate () OS X crashes on this illegal read, though other operating systems don't seem to mind. The nasty + 1 in this malloc makes sure there is always a byte for that instruction to read safely. + + Further to the above, valgrind is now telling me that ff_rgb24ToY_ssse3 + over-reads by more then _avx. I can't follow the code to work out how much, + so I'll just over-allocate by 32 bytes and have done with it. Empirical + testing suggests that it works. */ - _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * lines (i) + 1); + _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * lines (i) + 32); } } @@ -631,3 +656,173 @@ Image::aligned () const return _aligned; } +PositionImage +merge (list images) +{ + if (images.empty ()) { + return PositionImage (); + } + + if (images.size() == 1) { + return images.front (); + } + + dcpomatic::Rect all (images.front().position, images.front().image->size().width, images.front().image->size().height); + for (list::const_iterator i = images.begin(); i != images.end(); ++i) { + all.extend (dcpomatic::Rect (i->position, i->image->size().width, i->image->size().height)); + } + + shared_ptr merged (new Image (images.front().image->pixel_format (), dcp::Size (all.width, all.height), true)); + merged->make_transparent (); + for (list::const_iterator i = images.begin(); i != images.end(); ++i) { + merged->alpha_blend (i->image, i->position - all.position()); + } + + return PositionImage (merged, all.position ()); +} + +string +Image::digest () const +{ + MD5Digester digester; + + for (int i = 0; i < components(); ++i) { + digester.add (data()[i], line_size()[i]); + } + + return digester.get (); +} + +bool +operator== (Image const & a, Image const & b) +{ + if (a.components() != b.components() || a.pixel_format() != b.pixel_format() || a.aligned() != b.aligned()) { + return false; + } + + for (int c = 0; c < a.components(); ++c) { + if (a.lines(c) != b.lines(c) || a.line_size()[c] != b.line_size()[c] || a.stride()[c] != b.stride()[c]) { + return false; + } + + uint8_t* p = a.data()[c]; + uint8_t* q = b.data()[c]; + for (int y = 0; y < a.lines(c); ++y) { + if (memcmp (p, q, a.line_size()[c]) != 0) { + return false; + } + + p += a.stride()[c]; + q += b.stride()[c]; + } + } + + return true; +} + +void +Image::fade (float f) +{ + switch (_pixel_format) { + case PIX_FMT_YUV420P: + case PIX_FMT_YUV422P: + case PIX_FMT_YUV444P: + case PIX_FMT_YUV411P: + case PIX_FMT_YUVJ420P: + case PIX_FMT_YUVJ422P: + case PIX_FMT_YUVJ444P: + case PIX_FMT_RGB24: + case PIX_FMT_ARGB: + case PIX_FMT_RGBA: + case PIX_FMT_ABGR: + case PIX_FMT_BGRA: + case PIX_FMT_RGB555LE: + /* 8-bit */ + for (int c = 0; c < 3; ++c) { + uint8_t* p = data()[c]; + for (int y = 0; y < lines(c); ++y) { + uint8_t* q = p; + for (int x = 0; x < line_size()[c]; ++x) { + *q = int (float (*q) * f); + ++q; + } + p += stride()[c]; + } + } + break; + + case PIX_FMT_YUV422P9LE: + case PIX_FMT_YUV444P9LE: + case PIX_FMT_YUV422P10LE: + case PIX_FMT_YUV444P10LE: + case PIX_FMT_YUV422P16LE: + case PIX_FMT_YUV444P16LE: + case AV_PIX_FMT_YUVA420P9LE: + case AV_PIX_FMT_YUVA422P9LE: + case AV_PIX_FMT_YUVA444P9LE: + case AV_PIX_FMT_YUVA420P10LE: + case AV_PIX_FMT_YUVA422P10LE: + case AV_PIX_FMT_YUVA444P10LE: + /* 16-bit little-endian */ + for (int c = 0; c < 3; ++c) { + int const stride_pixels = stride()[c] / 2; + int const line_size_pixels = line_size()[c] / 2; + uint16_t* p = reinterpret_cast (data()[c]); + for (int y = 0; y < lines(c); ++y) { + uint16_t* q = p; + for (int x = 0; x < line_size_pixels; ++x) { + *q = int (float (*q) * f); + ++q; + } + p += stride_pixels; + } + } + break; + + case PIX_FMT_YUV422P9BE: + case PIX_FMT_YUV444P9BE: + case PIX_FMT_YUV444P10BE: + case PIX_FMT_YUV422P10BE: + case AV_PIX_FMT_YUVA420P9BE: + case AV_PIX_FMT_YUVA422P9BE: + case AV_PIX_FMT_YUVA444P9BE: + case AV_PIX_FMT_YUVA420P10BE: + case AV_PIX_FMT_YUVA422P10BE: + case AV_PIX_FMT_YUVA444P10BE: + case AV_PIX_FMT_YUVA420P16BE: + case AV_PIX_FMT_YUVA422P16BE: + case AV_PIX_FMT_YUVA444P16BE: + /* 16-bit big-endian */ + for (int c = 0; c < 3; ++c) { + int const stride_pixels = stride()[c] / 2; + int const line_size_pixels = line_size()[c] / 2; + uint16_t* p = reinterpret_cast (data()[c]); + for (int y = 0; y < lines(c); ++y) { + uint16_t* q = p; + for (int x = 0; x < line_size_pixels; ++x) { + *q = swap_16 (int (float (swap_16 (*q)) * f)); + ++q; + } + p += stride_pixels; + } + } + break; + + case PIX_FMT_UYVY422: + { + int const Y = lines(0); + int const X = line_size()[0]; + uint8_t* p = data()[0]; + for (int y = 0; y < Y; ++y) { + for (int x = 0; x < X; ++x) { + *p = int (float (*p) * f); + ++p; + } + } + break; + } + + default: + throw PixelFormatError ("fade()", _pixel_format); + } +}