X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fimage.cc;h=46c085ff2cf17943b6bd3b2b11d90779fefdfefc;hb=394c8347d54057c8a52dd63704ae2c9791bb30aa;hp=13ef0db19872cada4e8f89cc18b0496c55e1fe4f;hpb=ba7f8c6363e881fdc0044fbbbb36535996d6dbf7;p=dcpomatic.git diff --git a/src/lib/image.cc b/src/lib/image.cc index 13ef0db19..46c085ff2 100644 --- a/src/lib/image.cc +++ b/src/lib/image.cc @@ -27,6 +27,7 @@ #include "timer.h" #include "rect.h" #include "util.h" +#include "compose.hpp" #include "dcpomatic_socket.h" #include #include @@ -36,6 +37,10 @@ extern "C" { #include #include } +#include +#if HAVE_VALGRIND_MEMCHECK_H +#include +#endif #include #include "i18n.h" @@ -51,7 +56,7 @@ using boost::shared_ptr; using dcp::Size; int -Image::line_factor (int n) const +Image::vertical_factor (int n) const { if (n == 0) { return 1; @@ -65,24 +70,30 @@ Image::line_factor (int n) const return pow (2.0f, d->log2_chroma_h); } +int +Image::horizontal_factor (int n) const +{ + if (n == 0) { + return 1; + } + + 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. * @return Number of samples (i.e. pixels, unless sub-sampled) in each direction for this component. */ dcp::Size Image::sample_size (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); - } - return dcp::Size ( - lrint (ceil (static_cast(size().width) / horizontal_factor)), - lrint (ceil (static_cast(size().height) / line_factor (n))) + lrint (ceil (static_cast(size().width) / horizontal_factor (n))), + lrint (ceil (static_cast(size().height) / vertical_factor (n))) ); } @@ -95,6 +106,10 @@ Image::planes () const throw PixelFormatError ("planes()", _pixel_format); } + if (_pixel_format == AV_PIX_FMT_PAL8) { + return 2; + } + if ((d->flags & AV_PIX_FMT_FLAG_PLANAR) == 0) { return 1; } @@ -103,6 +118,12 @@ Image::planes () const } /** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size'. + * @param crop Amount to crop by. + * @param inter_size Size to scale the cropped image to. + * @param out_size Size of output frame; if this is larger than inter_size there will be black padding. + * @param yuv_to_rgb YUV to RGB transformation to use, if required. + * @param out_format Output pixel format. + * @param out_aligned true to make the output image aligned. * @param fast Try to be fast at the possible expense of quality; at present this means using * fast bilinear rather than bicubic scaling. */ @@ -164,6 +185,18 @@ Image::crop_scale_window ( SWS_CS_ITU709 }; + /* The 3rd parameter here is: + 0 -> source range MPEG (i.e. "video", 16-235) + 1 -> source range JPEG (i.e. "full", 0-255) + And the 5th: + 0 -> destination range MPEG (i.e. "video", 16-235) + 1 -> destination range JPEG (i.e. "full", 0-255) + + But remember: sws_setColorspaceDetails ignores + these parameters unless the image isYUV or isGray + (if it's neither, it uses video range for source + and destination). + */ sws_setColorspaceDetails ( scale_context, sws_getCoefficients (lut[yuv_to_rgb]), 0, @@ -171,8 +204,8 @@ 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); } @@ -184,16 +217,23 @@ 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); - scale_in_data[c] = data()[c] + x + stride()[c] * (crop.top / line_factor(c)); + 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; + /* 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 ( @@ -208,7 +248,17 @@ Image::crop_scale_window ( return out; } -/** @param fast Try to be fast at the possible expense of quality; at present this means using +shared_ptr +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. + * @param out_aligned true to make an aligned output image. + * @param fast Try to be fast at the possible expense of quality; at present this means using * fast bilinear rather than bicubic scaling. */ shared_ptr @@ -224,7 +274,7 @@ 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); @@ -233,6 +283,18 @@ Image::scale (dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_fo SWS_CS_ITU709 }; + /* The 3rd parameter here is: + 0 -> source range MPEG (i.e. "video", 16-235) + 1 -> source range JPEG (i.e. "full", 0-255) + And the 5th: + 0 -> destination range MPEG (i.e. "video", 16-235) + 1 -> destination range JPEG (i.e. "full", 0-255) + + But remember: sws_setColorspaceDetails ignores + these parameters unless the image isYUV or isGray + (if it's neither, it uses video range for source + and destination). + */ sws_setColorspaceDetails ( scale_context, sws_getCoefficients (lut[yuv_to_rgb]), 0, @@ -407,7 +469,7 @@ 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); } @@ -417,8 +479,8 @@ Image::make_transparent () 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; @@ -458,7 +520,6 @@ 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) { @@ -477,6 +538,25 @@ 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; @@ -485,7 +565,7 @@ 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); @@ -531,8 +611,111 @@ Image::alpha_blend (shared_ptr other, Position position) } break; } + case AV_PIX_FMT_YUV420P: + { + 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; + 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); + 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: - DCPOMATIC_ASSERT (false); + throw PixelFormatError ("alpha_blend()", _pixel_format); } } @@ -628,6 +811,7 @@ Image::bytes_per_pixel (int c) const * * @param p Pixel format. * @param s Size in pixels. + * @param aligned true to make each row of this image aligned to a 32-byte boundary. * @param extra_pixels Amount of extra "run-off" memory to allocate at the end of each plane in pixels. */ Image::Image (AVPixelFormat p, dcp::Size s, bool aligned, int extra_pixels) @@ -670,11 +854,18 @@ Image::allocate () testing suggests that it works. */ _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * sample_size(i).height + _extra_pixels * bytes_per_pixel(i) + 32); +#if HAVE_VALGRIND_MEMCHECK_H + /* The data between the end of the line size and the stride is undefined but processed by + libswscale, causing lots of valgrind errors. Mark it all defined to quell these errors. + */ + VALGRIND_MAKE_MEM_DEFINED (_data[i], _stride[i] * sample_size(i).height + _extra_pixels * bytes_per_pixel(i) + 32); +#endif } } 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) @@ -973,3 +1164,118 @@ Image::fade (float f) throw PixelFormatError ("fade()", _pixel_format); } } + +shared_ptr +Image::ensure_aligned (shared_ptr image) +{ + if (image->aligned()) { + return image; + } + + return shared_ptr (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; +} + +class Memory +{ +public: + Memory () + : data(0) + , size(0) + {} + + ~Memory () + { + free (data); + } + + uint8_t* data; + size_t size; +}; + +static void +png_write_data (png_structp png_ptr, png_bytep data, png_size_t length) +{ + Memory* mem = reinterpret_cast(png_get_io_ptr(png_ptr)); + size_t size = mem->size + length; + + if (mem->data) { + mem->data = reinterpret_cast(realloc(mem->data, size)); + } else { + mem->data = reinterpret_cast(malloc(size)); + } + + if (!mem->data) { + throw EncodeError (N_("could not allocate memory for PNG")); + } + + memcpy (mem->data + mem->size, data, length); + mem->size += length; +} + +static void +png_flush (png_structp) +{ + +} + +static void +png_error_fn (png_structp png_ptr, char const * message) +{ + reinterpret_cast(png_get_error_ptr(png_ptr))->png_error (message); +} + +void +Image::png_error (char const * message) +{ + throw EncodeError (String::compose ("Error during PNG write: %1", message)); +} + +dcp::Data +Image::as_png () const +{ + DCPOMATIC_ASSERT (bytes_per_pixel(0) == 4); + DCPOMATIC_ASSERT (planes() == 1); + DCPOMATIC_ASSERT (pixel_format() == AV_PIX_FMT_BGRA); + + /* error handling? */ + png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, reinterpret_cast(const_cast(this)), png_error_fn, 0); + if (!png_ptr) { + throw EncodeError (N_("could not create PNG write struct")); + } + + Memory state; + + png_set_write_fn (png_ptr, &state, png_write_data, png_flush); + + png_infop info_ptr = png_create_info_struct(png_ptr); + if (!info_ptr) { + png_destroy_write_struct (&png_ptr, &info_ptr); + throw EncodeError (N_("could not create PNG info struct")); + } + + png_set_IHDR (png_ptr, info_ptr, size().width, size().height, 8, PNG_COLOR_TYPE_RGBA, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); + + png_byte ** row_pointers = reinterpret_cast(png_malloc(png_ptr, size().height * sizeof(png_byte *))); + for (int i = 0; i < size().height; ++i) { + row_pointers[i] = (png_byte *) (data()[0] + i * stride()[0]); + } + + png_write_info (png_ptr, info_ptr); + png_write_image (png_ptr, row_pointers); + png_write_end (png_ptr, info_ptr); + + png_destroy_write_struct (&png_ptr, &info_ptr); + png_free (png_ptr, row_pointers); + + return dcp::Data (state.data, state.size); +}