*/
/** @file src/image.cc
- * @brief A set of classes to describe video images.
+ * @brief A class to describe a video image.
*/
-#include <sstream>
-#include <iomanip>
#include <iostream>
-#include <execinfo.h>
-#include <cxxabi.h>
-#include <sys/time.h>
-#include <boost/algorithm/string.hpp>
-#include <openjpeg.h>
extern "C" {
-#include <libavcodec/avcodec.h>
-#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
-#include <libavfilter/avfiltergraph.h>
-#include <libpostproc/postprocess.h>
#include <libavutil/pixfmt.h>
+#include <libavutil/pixdesc.h>
+#include <libpostproc/postprocess.h>
}
#include "image.h"
#include "exceptions.h"
#include "scaler.h"
-#ifdef DEBUG_HASH
-#include <mhash.h>
-#endif
+#include "i18n.h"
+
+using std::string;
+using std::min;
+using std::cout;
+using std::cerr;
+using boost::shared_ptr;
+using libdcp::Size;
+
+int
+Image::line_factor (int n) const
+{
+ if (n == 0) {
+ return 1;
+ }
-using namespace std;
-using namespace boost;
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError ("lines()", _pixel_format);
+ }
+
+ return pow (2.0f, d->log2_chroma_h);
+}
/** @param n Component index.
* @return Number of lines in the image for the given component.
int
Image::lines (int n) const
{
- switch (_pixel_format) {
- case PIX_FMT_YUV420P:
- if (n == 0) {
- return size().height;
- } else {
- return size().height / 2;
- }
- break;
- case PIX_FMT_RGB24:
- return size().height;
- default:
- assert (false);
- }
-
- return 0;
+ return rint (ceil (static_cast<double>(size().height) / line_factor (n)));
}
/** @return Number of components */
int
Image::components () const
{
- switch (_pixel_format) {
- case PIX_FMT_YUV420P:
- return 3;
- case PIX_FMT_RGB24:
- return 1;
- default:
- assert (false);
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError ("components()", _pixel_format);
}
- return 0;
+ if ((d->flags & PIX_FMT_PLANAR) == 0) {
+ return 1;
+ }
+
+ return d->nb_components;
}
-#ifdef DEBUG_HASH
-/** Write a MD5 hash of the image's data to stdout.
- * @param n Title to give the output.
- */
-void
-Image::hash (string n) const
+/** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size' */
+shared_ptr<Image>
+Image::crop_scale_window (Crop crop, libdcp::Size inter_size, libdcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
{
- MHASH ht = mhash_init (MHASH_MD5);
- if (ht == MHASH_FAILED) {
- throw EncodeError ("could not create hash thread");
+ assert (scaler);
+ /* Empirical testing suggests that sws_scale() will crash if
+ the input image is not aligned.
+ */
+ assert (aligned ());
+
+ assert (out_size.width >= inter_size.width);
+ assert (out_size.height >= inter_size.height);
+
+ /* Here's an image of out_size */
+ shared_ptr<Image> out (new Image (out_format, out_size, out_aligned));
+ out->make_black ();
+
+ /* Size of the image after any crop */
+ libdcp::Size const cropped_size = crop.apply (size ());
+
+ /* Scale context for a scale from cropped_size to inter_size */
+ struct SwsContext* scale_context = sws_getContext (
+ cropped_size.width, cropped_size.height, pixel_format(),
+ inter_size.width, inter_size.height, out_format,
+ scaler->ffmpeg_id (), 0, 0, 0
+ );
+
+ if (!scale_context) {
+ throw StringError (N_("Could not allocate SwsContext"));
}
-
- for (int i = 0; i < components(); ++i) {
- mhash (ht, data()[i], line_size()[i] * lines(i));
+
+ /* Prepare input data pointers with crop */
+ uint8_t* scale_in_data[components()];
+ for (int c = 0; c < components(); ++c) {
+ scale_in_data[c] = data()[c] + int (rint (bytes_per_pixel(c) * crop.left)) + stride()[c] * (crop.top / line_factor(c));
}
-
- uint8_t hash[16];
- mhash_deinit (ht, hash);
-
- printf ("%s: ", n.c_str ());
- for (int i = 0; i < int (mhash_get_block_size (MHASH_MD5)); ++i) {
- printf ("%.2x", hash[i]);
+
+ /* Corner of the image within out_size */
+ Position<int> const corner ((out_size.width - inter_size.width) / 2, (out_size.height - inter_size.height) / 2);
+
+ uint8_t* scale_out_data[out->components()];
+ for (int c = 0; c < out->components(); ++c) {
+ scale_out_data[c] = out->data()[c] + int (rint (out->bytes_per_pixel(c) * corner.x)) + out->stride()[c] * corner.y;
}
- printf ("\n");
+
+ sws_scale (
+ scale_context,
+ scale_in_data, stride(),
+ 0, cropped_size.height,
+ scale_out_data, out->stride()
+ );
+
+ sws_freeContext (scale_context);
+
+ return out;
}
-#endif
-/** 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>
-Image::scale_and_convert_to_rgb (Size out_size, int padding, Scaler const * scaler) const
+shared_ptr<Image>
+Image::scale (libdcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
{
assert (scaler);
+ /* Empirical testing suggests that sws_scale() will crash if
+ the input image is not aligned.
+ */
+ assert (aligned ());
- Size content_size = out_size;
- content_size.width -= (padding * 2);
+ shared_ptr<Image> scaled (new Image (out_format, out_size, out_aligned));
- shared_ptr<RGBFrameImage> rgb (new RGBFrameImage (content_size));
-
struct SwsContext* scale_context = sws_getContext (
size().width, size().height, pixel_format(),
- content_size.width, content_size.height, PIX_FMT_RGB24,
+ out_size.width, out_size.height, out_format,
scaler->ffmpeg_id (), 0, 0, 0
);
- /* Scale and convert to RGB from whatever its currently in (which may be RGB) */
sws_scale (
scale_context,
- data(), line_size(),
+ data(), stride(),
0, size().height,
- rgb->data (), rgb->line_size ()
+ scaled->data(), scaled->stride()
);
- /* Put the image in the right place in a black frame if are padding; this is
- a bit grubby and expensive, but probably inconsequential in the great
- scheme of things.
- */
- if (padding > 0) {
- shared_ptr<RGBFrameImage> padded_rgb (new RGBFrameImage (out_size));
- padded_rgb->make_black ();
-
- /* XXX: we are cheating a bit here; we know the frame is RGB so we can
- make assumptions about its composition.
- */
- uint8_t* p = padded_rgb->data()[0] + padding * 3;
- uint8_t* q = rgb->data()[0];
- for (int j = 0; j < rgb->lines(0); ++j) {
- memcpy (p, q, rgb->line_size()[0]);
- p += padded_rgb->line_size()[0];
- q += rgb->line_size()[0];
- }
-
- rgb = padded_rgb;
- }
-
sws_freeContext (scale_context);
- return rgb;
+ return scaled;
}
/** Run a FFmpeg post-process on this image and return the processed version.
* @param pp Flags for the required set of post processes.
* @return Post-processed image.
*/
-shared_ptr<PostProcessImage>
-Image::post_process (string pp) const
+shared_ptr<Image>
+Image::post_process (string pp, bool aligned) const
{
- shared_ptr<PostProcessImage> out (new PostProcessImage (PIX_FMT_YUV420P, size ()));
-
+ shared_ptr<Image> out (new Image (pixel_format(), size (), aligned));
+
+ int pp_format = 0;
+ switch (pixel_format()) {
+ case PIX_FMT_YUV420P:
+ pp_format = PP_FORMAT_420;
+ break;
+ case PIX_FMT_YUV422P10LE:
+ case PIX_FMT_YUV422P:
+ case PIX_FMT_UYVY422:
+ pp_format = PP_FORMAT_422;
+ break;
+ case PIX_FMT_YUV444P:
+ case PIX_FMT_YUV444P9BE:
+ case PIX_FMT_YUV444P9LE:
+ case PIX_FMT_YUV444P10BE:
+ case PIX_FMT_YUV444P10LE:
+ pp_format = PP_FORMAT_444;
+ default:
+ throw PixelFormatError ("post_process", pixel_format());
+ }
+
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);
+ pp_context* context = pp_get_context (size().width, size().height, pp_format | PP_CPU_CAPS_MMX2);
pp_postprocess (
- (const uint8_t **) data(), line_size(),
- out->data(), out->line_size(),
+ (const uint8_t **) data(), stride(),
+ out->data(), out->stride(),
size().width, size().height,
0, 0, mode, context, 0
);
return out;
}
+shared_ptr<Image>
+Image::crop (Crop crop, bool aligned) const
+{
+ libdcp::Size cropped_size = crop.apply (size ());
+ shared_ptr<Image> out (new Image (pixel_format(), cropped_size, aligned));
+
+ for (int c = 0; c < components(); ++c) {
+ int const crop_left_in_bytes = bytes_per_pixel(c) * crop.left;
+ /* bytes_per_pixel() could be a fraction; in this case the stride will be rounded
+ up, and we need to make sure that we copy over the width (up to the stride)
+ rather than short of the width; hence the ceil() here.
+ */
+ int const cropped_width_in_bytes = ceil (bytes_per_pixel(c) * cropped_size.width);
+
+ /* Start of the source line, cropped from the top but not the left */
+ uint8_t* in_p = data()[c] + (crop.top / out->line_factor(c)) * stride()[c];
+ uint8_t* out_p = out->data()[c];
+
+ for (int y = 0; y < out->lines(c); ++y) {
+ memcpy (out_p, in_p + crop_left_in_bytes, cropped_width_in_bytes);
+ in_p += stride()[c];
+ out_p += out->stride()[c];
+ }
+ }
+
+ return out;
+}
+
+/** Blacken a YUV image whose bits per pixel is rounded up to 16 */
+void
+Image::yuv_16_black (uint16_t v, bool alpha)
+{
+ memset (data()[0], 0, lines(0) * stride()[0]);
+ for (int i = 1; i < 3; ++i) {
+ int16_t* p = reinterpret_cast<int16_t*> (data()[i]);
+ for (int y = 0; y < lines(i); ++y) {
+ /* We divide by 2 here because we are writing 2 bytes at a time */
+ for (int x = 0; x < line_size()[i] / 2; ++x) {
+ p[x] = v;
+ }
+ p += stride()[i] / 2;
+ }
+ }
+
+ if (alpha) {
+ memset (data()[3], 0, lines(3) * stride()[3]);
+ }
+}
+
+uint16_t
+Image::swap_16 (uint16_t v)
+{
+ return ((v >> 8) & 0xff) | ((v & 0xff) << 8);
+}
+
void
Image::make_black ()
{
+ /* U/V black value for 8-bit colour */
+ static uint8_t const eight_bit_uv = (1 << 7) - 1;
+ /* U/V black value for 9-bit colour */
+ static uint16_t const nine_bit_uv = (1 << 8) - 1;
+ /* U/V black value for 10-bit colour */
+ static uint16_t const ten_bit_uv = (1 << 9) - 1;
+ /* U/V black value for 16-bit colour */
+ static uint16_t const sixteen_bit_uv = (1 << 15) - 1;
+
switch (_pixel_format) {
case PIX_FMT_YUV420P:
- memset (data()[0], 0, lines(0) * line_size()[0]);
- memset (data()[1], 0x80, lines(1) * line_size()[1]);
- memset (data()[2], 0x80, lines(2) * line_size()[2]);
+ case PIX_FMT_YUV422P:
+ case PIX_FMT_YUV444P:
+ case PIX_FMT_YUV411P:
+ memset (data()[0], 0, lines(0) * stride()[0]);
+ memset (data()[1], eight_bit_uv, lines(1) * stride()[1]);
+ memset (data()[2], eight_bit_uv, lines(2) * stride()[2]);
+ break;
+
+ case PIX_FMT_YUVJ420P:
+ case PIX_FMT_YUVJ422P:
+ case PIX_FMT_YUVJ444P:
+ memset (data()[0], 0, lines(0) * stride()[0]);
+ memset (data()[1], eight_bit_uv + 1, lines(1) * stride()[1]);
+ memset (data()[2], eight_bit_uv + 1, lines(2) * stride()[2]);
break;
- case PIX_FMT_RGB24:
- memset (data()[0], 0, lines(0) * line_size()[0]);
+ case PIX_FMT_YUV422P9LE:
+ case PIX_FMT_YUV444P9LE:
+ yuv_16_black (nine_bit_uv, false);
break;
+ case PIX_FMT_YUV422P9BE:
+ case PIX_FMT_YUV444P9BE:
+ yuv_16_black (swap_16 (nine_bit_uv), false);
+ break;
+
+ case PIX_FMT_YUV422P10LE:
+ case PIX_FMT_YUV444P10LE:
+ yuv_16_black (ten_bit_uv, false);
+ break;
+
+ case PIX_FMT_YUV422P16LE:
+ case PIX_FMT_YUV444P16LE:
+ yuv_16_black (sixteen_bit_uv, false);
+ break;
+
+ case PIX_FMT_YUV444P10BE:
+ case PIX_FMT_YUV422P10BE:
+ yuv_16_black (swap_16 (ten_bit_uv), false);
+ break;
+
+ case AV_PIX_FMT_YUVA420P9BE:
+ case AV_PIX_FMT_YUVA422P9BE:
+ case AV_PIX_FMT_YUVA444P9BE:
+ yuv_16_black (swap_16 (nine_bit_uv), true);
+ break;
+
+ case AV_PIX_FMT_YUVA420P9LE:
+ case AV_PIX_FMT_YUVA422P9LE:
+ case AV_PIX_FMT_YUVA444P9LE:
+ yuv_16_black (nine_bit_uv, true);
+ break;
+
+ case AV_PIX_FMT_YUVA420P10BE:
+ case AV_PIX_FMT_YUVA422P10BE:
+ case AV_PIX_FMT_YUVA444P10BE:
+ yuv_16_black (swap_16 (ten_bit_uv), true);
+ break;
+
+ case AV_PIX_FMT_YUVA420P10LE:
+ case AV_PIX_FMT_YUVA422P10LE:
+ case AV_PIX_FMT_YUVA444P10LE:
+ yuv_16_black (ten_bit_uv, true);
+ break;
+
+ case AV_PIX_FMT_YUVA420P16BE:
+ case AV_PIX_FMT_YUVA422P16BE:
+ case AV_PIX_FMT_YUVA444P16BE:
+ yuv_16_black (swap_16 (sixteen_bit_uv), true);
+ break;
+
+ case AV_PIX_FMT_YUVA420P16LE:
+ case AV_PIX_FMT_YUVA422P16LE:
+ case AV_PIX_FMT_YUVA444P16LE:
+ yuv_16_black (sixteen_bit_uv, true);
+ break;
+
+ case PIX_FMT_RGB24:
+ case PIX_FMT_ARGB:
+ case PIX_FMT_RGBA:
+ case PIX_FMT_ABGR:
+ case PIX_FMT_BGRA:
+ memset (data()[0], 0, lines(0) * stride()[0]);
+ 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 / 4; ++x) {
+ *p++ = eight_bit_uv; // Cb
+ *p++ = 0; // Y0
+ *p++ = eight_bit_uv; // Cr
+ *p++ = 0; // Y1
+ }
+ }
+ break;
+ }
+
default:
- assert (false);
+ throw PixelFormatError ("make_black()", _pixel_format);
}
}
-/** Construct a SimpleImage of a given size and format, allocating memory
- * as required.
- *
- * @param p Pixel format.
- * @param s Size in pixels.
- */
-SimpleImage::SimpleImage (PixelFormat p, Size s)
- : Image (p)
- , _size (s)
+void
+Image::alpha_blend (shared_ptr<const Image> other, Position<int> position)
{
- _data = (uint8_t **) av_malloc (components() * sizeof (uint8_t *));
- _line_size = (int *) av_malloc (components() * sizeof (int));
-
- for (int i = 0; i < components(); ++i) {
- _data[i] = 0;
- _line_size[i] = 0;
+ /* 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;
}
-}
-/** Destroy a SimpleImage */
-SimpleImage::~SimpleImage ()
-{
- for (int i = 0; i < components(); ++i) {
- av_free (_data[i]);
+ int start_ty = position.y;
+ int start_oy = 0;
+
+ if (start_ty < 0) {
+ start_oy = -start_ty;
+ start_ty = 0;
}
- av_free (_data);
- av_free (_line_size);
+ 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 * 3;
+ 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 += 3;
+ op += 4;
+ }
+ }
}
-/** 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)
+Image::copy (shared_ptr<const Image> other, Position<int> position)
{
- _line_size[i] = s;
- _data[i] = (uint8_t *) av_malloc (s * lines (i));
-}
+ /* Only implemented for RGB24 onto RGB24 so far */
+ assert (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGB24);
+ assert (position.x >= 0 && position.y >= 0);
+
+ int const N = min (position.x + other->size().width, size().width) - position.x;
+ for (int ty = position.y, oy = 0; ty < size().height && oy < other->size().height; ++ty, ++oy) {
+ uint8_t * const tp = data()[0] + ty * stride()[0] + position.x * 3;
+ uint8_t * const op = other->data()[0] + oy * other->stride()[0];
+ memcpy (tp, op, N * 3);
+ }
+}
-uint8_t **
-SimpleImage::data () const
+void
+Image::read_from_socket (shared_ptr<Socket> socket)
{
- return _data;
+ for (int i = 0; i < components(); ++i) {
+ uint8_t* p = data()[i];
+ for (int y = 0; y < lines(i); ++y) {
+ socket->read (p, line_size()[i]);
+ p += stride()[i];
+ }
+ }
}
-int *
-SimpleImage::line_size () const
+void
+Image::write_to_socket (shared_ptr<Socket> socket) const
{
- return _line_size;
+ for (int i = 0; i < components(); ++i) {
+ uint8_t* p = data()[i];
+ for (int y = 0; y < lines(i); ++y) {
+ socket->write (p, line_size()[i]);
+ p += stride()[i];
+ }
+ }
}
-Size
-SimpleImage::size () const
+
+float
+Image::bytes_per_pixel (int c) const
{
- return _size;
-}
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError ("lines()", _pixel_format);
+ }
+ if (c >= components()) {
+ return 0;
+ }
-FilterBufferImage::FilterBufferImage (PixelFormat p, AVFilterBufferRef* b)
- : Image (p)
- , _buffer (b)
-{
+ float bpp[4] = { 0, 0, 0, 0 };
-}
+ bpp[0] = floor ((d->comp[0].depth_minus1 + 1 + 7) / 8);
+ if (d->nb_components > 1) {
+ bpp[1] = floor ((d->comp[1].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ }
+ if (d->nb_components > 2) {
+ bpp[2] = floor ((d->comp[2].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ }
+ if (d->nb_components > 3) {
+ bpp[3] = floor ((d->comp[3].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ }
+
+ if ((d->flags & PIX_FMT_PLANAR) == 0) {
+ /* Not planar; sum them up */
+ return bpp[0] + bpp[1] + bpp[2] + bpp[3];
+ }
-FilterBufferImage::~FilterBufferImage ()
-{
- avfilter_unref_buffer (_buffer);
+ return bpp[c];
}
-uint8_t **
-FilterBufferImage::data () const
+/** Construct a Image of a given size and format, allocating memory
+ * as required.
+ *
+ * @param p Pixel format.
+ * @param s Size in pixels.
+ */
+Image::Image (AVPixelFormat p, libdcp::Size s, bool aligned)
+ : libdcp::Image (s)
+ , _pixel_format (p)
+ , _aligned (aligned)
{
- return _buffer->data;
+ allocate ();
}
-int *
-FilterBufferImage::line_size () const
+void
+Image::allocate ()
{
- return _buffer->linesize;
-}
+ _data = (uint8_t **) wrapped_av_malloc (4 * sizeof (uint8_t *));
+ _data[0] = _data[1] = _data[2] = _data[3] = 0;
+
+ _line_size = (int *) wrapped_av_malloc (4 * sizeof (int));
+ _line_size[0] = _line_size[1] = _line_size[2] = _line_size[3] = 0;
+
+ _stride = (int *) wrapped_av_malloc (4 * sizeof (int));
+ _stride[0] = _stride[1] = _stride[2] = _stride[3] = 0;
-Size
-FilterBufferImage::size () const
-{
- return Size (_buffer->video->w, _buffer->video->h);
+ for (int i = 0; i < components(); ++i) {
+ _line_size[i] = ceil (_size.width * bytes_per_pixel(i));
+ _stride[i] = stride_round_up (i, _line_size, _aligned ? 32 : 1);
+
+ /* The assembler function ff_rgb24ToY_avx (in libswscale/x86/input.asm)
+ uses a 16-byte fetch to read three bytes (R/G/B) of image data.
+ Hence on the last pixel of the last line it reads over the end of
+ the actual data by 1 byte. If the width of an image is a multiple
+ of the stride alignment there will be no padding at the end of image lines.
+ 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.
+ */
+ _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * lines (i) + 1);
+ }
}
-/** XXX: this could be generalised to use any format, but I don't
- * understand how avpicture_fill is supposed to be called with
- * multi-planar images.
- */
-RGBFrameImage::RGBFrameImage (Size s)
- : Image (PIX_FMT_RGB24)
- , _size (s)
+Image::Image (Image const & other)
+ : libdcp::Image (other)
+ , _pixel_format (other._pixel_format)
+ , _aligned (other._aligned)
{
- _frame = avcodec_alloc_frame ();
- if (_frame == 0) {
- throw EncodeError ("could not allocate frame");
- }
+ allocate ();
- _data = (uint8_t *) av_malloc (size().width * size().height * 3);
- avpicture_fill ((AVPicture *) _frame, _data, PIX_FMT_RGB24, size().width, size().height);
- _frame->width = size().width;
- _frame->height = size().height;
- _frame->format = PIX_FMT_RGB24;
+ for (int i = 0; i < components(); ++i) {
+ uint8_t* p = _data[i];
+ uint8_t* q = other._data[i];
+ for (int j = 0; j < lines(i); ++j) {
+ memcpy (p, q, _line_size[i]);
+ p += stride()[i];
+ q += other.stride()[i];
+ }
+ }
}
-RGBFrameImage::~RGBFrameImage ()
+Image::Image (AVFrame* frame)
+ : libdcp::Image (libdcp::Size (frame->width, frame->height))
+ , _pixel_format (static_cast<AVPixelFormat> (frame->format))
+ , _aligned (true)
{
- av_free (_data);
- av_free (_frame);
-}
+ allocate ();
-uint8_t **
-RGBFrameImage::data () const
-{
- return _frame->data;
+ for (int i = 0; i < components(); ++i) {
+ uint8_t* p = _data[i];
+ uint8_t* q = frame->data[i];
+ for (int j = 0; j < lines(i); ++j) {
+ memcpy (p, q, _line_size[i]);
+ p += stride()[i];
+ /* AVFrame's linesize is what we call `stride' */
+ q += frame->linesize[i];
+ }
+ }
}
-int *
-RGBFrameImage::line_size () const
+Image::Image (shared_ptr<const Image> other, bool aligned)
+ : libdcp::Image (other)
+ , _pixel_format (other->_pixel_format)
+ , _aligned (aligned)
{
- return _frame->linesize;
+ allocate ();
+
+ for (int i = 0; i < components(); ++i) {
+ assert(line_size()[i] == other->line_size()[i]);
+ uint8_t* p = _data[i];
+ uint8_t* q = other->data()[i];
+ for (int j = 0; j < lines(i); ++j) {
+ memcpy (p, q, line_size()[i]);
+ p += stride()[i];
+ q += other->stride()[i];
+ }
+ }
}
-Size
-RGBFrameImage::size () const
+Image&
+Image::operator= (Image const & other)
{
- return _size;
+ if (this == &other) {
+ return *this;
+ }
+
+ Image tmp (other);
+ swap (tmp);
+ return *this;
}
-PostProcessImage::PostProcessImage (PixelFormat p, Size s)
- : Image (p)
- , _size (s)
+void
+Image::swap (Image & other)
{
- _data = new uint8_t*[4];
- _line_size = new int[4];
+ libdcp::Image::swap (other);
+ std::swap (_pixel_format, other._pixel_format);
+
for (int i = 0; i < 4; ++i) {
- _data[i] = (uint8_t *) av_malloc (s.width * s.height);
- _line_size[i] = s.width;
+ std::swap (_data[i], other._data[i]);
+ std::swap (_line_size[i], other._line_size[i]);
+ std::swap (_stride[i], other._stride[i]);
}
+
+ std::swap (_aligned, other._aligned);
}
-PostProcessImage::~PostProcessImage ()
+/** Destroy a Image */
+Image::~Image ()
{
- for (int i = 0; i < 4; ++i) {
+ for (int i = 0; i < components(); ++i) {
av_free (_data[i]);
}
-
- delete[] _data;
- delete[] _line_size;
+
+ av_free (_data);
+ av_free (_line_size);
+ av_free (_stride);
}
uint8_t **
-PostProcessImage::data () const
+Image::data () const
{
return _data;
}
int *
-PostProcessImage::line_size () const
+Image::line_size () const
{
return _line_size;
}
-Size
-PostProcessImage::size () const
+int *
+Image::stride () const
+{
+ return _stride;
+}
+
+libdcp::Size
+Image::size () const
{
return _size;
}
+
+bool
+Image::aligned () const
+{
+ return _aligned;
+}
+
projects / dcpomatic.git / blobdiff