#include <libavfilter/avfiltergraph.h>
#include <libpostproc/postprocess.h>
#include <libavutil/pixfmt.h>
+#include <libavutil/pixdesc.h>
}
#include "image.h"
#include "exceptions.h"
#include "scaler.h"
+#include "i18n.h"
+
using namespace std;
using namespace boost;
+using libdcp::Size;
+
+void
+Image::swap (Image& other)
+{
+ std::swap (_pixel_format, other._pixel_format);
+}
/** @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:
- case PIX_FMT_RGBA:
- case PIX_FMT_YUV422P10LE:
+ if (n == 0) {
return size().height;
- default:
- assert (false);
}
-
- return 0;
+
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError (N_("lines()"), _pixel_format);
+ }
+
+ return size().height / pow(2.0f, d->log2_chroma_h);
}
/** @return Number of components */
int
Image::components () const
{
- switch (_pixel_format) {
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUV422P10LE:
- return 3;
- case PIX_FMT_RGB24:
- case PIX_FMT_RGBA:
- return 1;
- default:
- assert (false);
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError (N_("components()"), _pixel_format);
}
- return 0;
+ if ((d->flags & PIX_FMT_PLANAR) == 0) {
+ return 1;
+ }
+
+ return d->nb_components;
}
shared_ptr<Image>
-Image::scale (Size out_size, Scaler const * scaler) const
+Image::scale (libdcp::Size out_size, Scaler const * scaler, bool result_aligned) const
{
assert (scaler);
+ /* Empirical testing suggests that sws_scale() will crash if
+ the input image is not aligned.
+ */
+ assert (aligned ());
- shared_ptr<Image> scaled (new AlignedImage (pixel_format(), out_size));
+ shared_ptr<Image> scaled (new SimpleImage (pixel_format(), out_size, result_aligned));
struct SwsContext* scale_context = sws_getContext (
size().width, size().height, pixel_format(),
* @param scaler Scaler to use.
*/
shared_ptr<Image>
-Image::scale_and_convert_to_rgb (Size out_size, int padding, Scaler const * scaler) const
+Image::scale_and_convert_to_rgb (libdcp::Size out_size, Scaler const * scaler, bool result_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> rgb (new AlignedImage (PIX_FMT_RGB24, content_size));
+ shared_ptr<Image> rgb (new SimpleImage (PIX_FMT_RGB24, out_size, result_aligned));
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, PIX_FMT_RGB24,
scaler->ffmpeg_id (), 0, 0, 0
);
rgb->data(), rgb->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<Image> padded_rgb (new AlignedImage (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
- 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->stride()[0];
- q += rgb->stride()[0];
- }
-
- rgb = padded_rgb;
- }
-
sws_freeContext (scale_context);
return rgb;
* @return Post-processed image.
*/
shared_ptr<Image>
-Image::post_process (string pp) const
+Image::post_process (string pp, bool aligned) const
{
- shared_ptr<Image> out (new AlignedImage (pixel_format(), size ()));
+ shared_ptr<Image> out (new SimpleImage (pixel_format(), size (), aligned));
int pp_format = 0;
switch (pixel_format()) {
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:
- assert (false);
+ throw PixelFormatError (N_("post_process"), pixel_format());
}
pp_mode* mode = pp_get_mode_by_name_and_quality (pp.c_str (), PP_QUALITY_MAX);
return out;
}
+shared_ptr<Image>
+Image::crop (Crop crop, bool aligned) const
+{
+ libdcp::Size cropped_size = size ();
+ cropped_size.width -= crop.left + crop.right;
+ cropped_size.height -= crop.top + crop.bottom;
+
+ shared_ptr<Image> out (new SimpleImage (pixel_format(), cropped_size, aligned));
+
+ for (int c = 0; c < components(); ++c) {
+ int const crop_left_in_bytes = bytes_per_pixel(c) * crop.left;
+ int const cropped_width_in_bytes = 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 * 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)
+{
+ 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 < size().height; ++y) {
+ for (int x = 0; x < line_size()[i] / 2; ++x) {
+ p[x] = v;
+ }
+ p += stride()[i] / 2;
+ }
+ }
+}
+
+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:
- case PIX_FMT_YUV422P10LE:
+ case PIX_FMT_YUV422P:
+ case PIX_FMT_YUV444P:
memset (data()[0], 0, lines(0) * stride()[0]);
- memset (data()[1], 0x80, lines(1) * stride()[1]);
- memset (data()[2], 0x80, lines(2) * stride()[2]);
+ 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_YUV422P9LE:
+ case PIX_FMT_YUV444P9LE:
+ yuv_16_black (nine_bit_uv);
+ break;
+
+ case PIX_FMT_YUV422P9BE:
+ case PIX_FMT_YUV444P9BE:
+ yuv_16_black (swap_16 (nine_bit_uv));
+ break;
+
+ case PIX_FMT_YUV422P10LE:
+ case PIX_FMT_YUV444P10LE:
+ yuv_16_black (ten_bit_uv);
+ break;
+
+ case PIX_FMT_YUV422P16LE:
+ case PIX_FMT_YUV444P16LE:
+ yuv_16_black (sixteen_bit_uv);
+ break;
+
+ case PIX_FMT_YUV444P10BE:
+ case PIX_FMT_YUV422P10BE:
+ yuv_16_black (swap_16 (ten_bit_uv));
break;
case PIX_FMT_RGB24:
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 (N_("make_black()"), _pixel_format);
}
}
void
-Image::alpha_blend (shared_ptr<Image> other, Position position)
+Image::alpha_blend (shared_ptr<const Image> other, Position position)
{
/* Only implemented for RGBA onto RGB24 so far */
assert (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGBA);
}
}
+void
+Image::copy (shared_ptr<const Image> other, Position position)
+{
+ /* 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);
+ }
+}
+
void
Image::read_from_socket (shared_ptr<Socket> socket)
{
for (int i = 0; i < components(); ++i) {
uint8_t* p = data()[i];
for (int y = 0; y < lines(i); ++y) {
- socket->read_definite_and_consume (p, line_size()[i], 30);
+ socket->read (p, line_size()[i]);
p += stride()[i];
}
}
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], 30);
+ socket->write (p, line_size()[i]);
p += stride()[i];
}
}
}
+
+float
+Image::bytes_per_pixel (int c) const
+{
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError (N_("lines()"), _pixel_format);
+ }
+
+ if (c >= components()) {
+ return 0;
+ }
+
+ 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];
+ }
+
+ return bpp[c];
+}
+
/** 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, function<int (int)> rounder)
+SimpleImage::SimpleImage (AVPixelFormat p, libdcp::Size s, bool aligned)
: Image (p)
, _size (s)
+ , _aligned (aligned)
+{
+ allocate ();
+}
+
+void
+SimpleImage::allocate ()
{
_data = (uint8_t **) av_malloc (4 * sizeof (uint8_t *));
_data[0] = _data[1] = _data[2] = _data[3] = 0;
_stride = (int *) av_malloc (4 * sizeof (int));
_stride[0] = _stride[1] = _stride[2] = _stride[3] = 0;
- switch (p) {
- case PIX_FMT_RGB24:
- _line_size[0] = s.width * 3;
- break;
- case PIX_FMT_RGBA:
- _line_size[0] = s.width * 4;
- break;
- case PIX_FMT_YUV420P:
- _line_size[0] = s.width;
- _line_size[1] = s.width / 2;
- _line_size[2] = s.width / 2;
- break;
- case PIX_FMT_YUV422P10LE:
- _line_size[0] = s.width * 2;
- _line_size[1] = s.width;
- _line_size[2] = s.width;
- break;
- default:
- assert (false);
- }
-
for (int i = 0; i < components(); ++i) {
- _stride[i] = rounder (_line_size[i]);
+ _line_size[i] = _size.width * bytes_per_pixel(i);
+ _stride[i] = stride_round_up (i, _line_size, _aligned ? 32 : 1);
_data[i] = (uint8_t *) av_malloc (_stride[i] * lines (i));
}
}
-/** Destroy a SimpleImage */
-SimpleImage::~SimpleImage ()
+SimpleImage::SimpleImage (SimpleImage const & other)
+ : Image (other)
+ , _size (other._size)
+ , _aligned (other._aligned)
{
+ allocate ();
+
for (int i = 0; i < components(); ++i) {
- av_free (_data[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];
+ }
}
-
- av_free (_data);
- av_free (_line_size);
- av_free (_stride);
}
-uint8_t **
-SimpleImage::data () const
+SimpleImage::SimpleImage (AVFrame* frame)
+ : Image (static_cast<AVPixelFormat> (frame->format))
+ , _size (frame->width, frame->height)
+ , _aligned (true)
{
- return _data;
-}
+ allocate ();
-int *
-SimpleImage::line_size () const
-{
- return _line_size;
-}
-
-int *
-SimpleImage::stride () const
-{
- return _stride;
+ 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];
+ }
+ }
}
-Size
-SimpleImage::size () const
+SimpleImage::SimpleImage (shared_ptr<const Image> other)
+ : Image (*other.get())
{
- return _size;
-}
+ _size = other->size ();
+ _aligned = true;
-AlignedImage::AlignedImage (PixelFormat f, Size s)
- : SimpleImage (f, s, boost::bind (round_up, _1, 32))
-{
+ 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];
+ }
+ }
}
-CompactImage::CompactImage (PixelFormat f, Size s)
- : SimpleImage (f, s, boost::bind (round_up, _1, 1))
+SimpleImage&
+SimpleImage::operator= (SimpleImage const & other)
{
+ if (this == &other) {
+ return *this;
+ }
+ SimpleImage tmp (other);
+ swap (tmp);
+ return *this;
}
-CompactImage::CompactImage (shared_ptr<Image> im)
- : SimpleImage (im->pixel_format(), im->size(), boost::bind (round_up, _1, 1))
+void
+SimpleImage::swap (SimpleImage & other)
{
- assert (components() == im->components());
-
- for (int c = 0; c < components(); ++c) {
-
- assert (line_size()[c] == im->line_size()[c]);
+ Image::swap (other);
+
+ std::swap (_size, other._size);
- uint8_t* t = data()[c];
- uint8_t* o = im->data()[c];
-
- for (int y = 0; y < lines(c); ++y) {
- memcpy (t, o, line_size()[c]);
- t += stride()[c];
- o += im->stride()[c];
- }
+ for (int i = 0; i < 4; ++i) {
+ std::swap (_data[i], other._data[i]);
+ std::swap (_line_size[i], other._line_size[i]);
+ std::swap (_stride[i], other._stride[i]);
}
-}
-
-FilterBufferImage::FilterBufferImage (PixelFormat p, AVFilterBufferRef* b)
- : Image (p)
- , _buffer (b)
-{
+ std::swap (_aligned, other._aligned);
}
-FilterBufferImage::~FilterBufferImage ()
+/** Destroy a SimpleImage */
+SimpleImage::~SimpleImage ()
{
- avfilter_unref_buffer (_buffer);
+ for (int i = 0; i < components(); ++i) {
+ av_free (_data[i]);
+ }
+
+ av_free (_data);
+ av_free (_line_size);
+ av_free (_stride);
}
uint8_t **
-FilterBufferImage::data () const
+SimpleImage::data () const
{
- return _buffer->data;
+ return _data;
}
int *
-FilterBufferImage::line_size () const
+SimpleImage::line_size () const
{
- return _buffer->linesize;
+ return _line_size;
}
int *
-FilterBufferImage::stride () const
+SimpleImage::stride () const
{
- /* XXX? */
- return _buffer->linesize;
+ return _stride;
}
-Size
-FilterBufferImage::size () const
+libdcp::Size
+SimpleImage::size () const
{
- return Size (_buffer->video->w, _buffer->video->h);
+ return _size;
}
-/** 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)
+bool
+SimpleImage::aligned () const
{
- _frame = avcodec_alloc_frame ();
- if (_frame == 0) {
- throw EncodeError ("could not allocate frame");
- }
-
- _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;
+ return _aligned;
}
-RGBFrameImage::~RGBFrameImage ()
+RGBPlusAlphaImage::RGBPlusAlphaImage (shared_ptr<const Image> im)
+ : SimpleImage (im->pixel_format(), im->size(), false)
{
- av_free (_data);
- av_free (_frame);
-}
-
-uint8_t **
-RGBFrameImage::data () const
-{
- return _frame->data;
-}
+ assert (im->pixel_format() == PIX_FMT_RGBA);
+
+ _alpha = (uint8_t *) av_malloc (im->size().width * im->size().height);
+
+ uint8_t* in = im->data()[0];
+ uint8_t* out = data()[0];
+ uint8_t* out_alpha = _alpha;
+ for (int y = 0; y < im->size().height; ++y) {
+ uint8_t* in_r = in;
+ for (int x = 0; x < im->size().width; ++x) {
+ *out++ = *in_r++;
+ *out++ = *in_r++;
+ *out++ = *in_r++;
+ *out_alpha++ = *in_r++;
+ }
-int *
-RGBFrameImage::line_size () const
-{
- return _frame->linesize;
+ in += im->stride()[0];
+ }
}
-int *
-RGBFrameImage::stride () const
+RGBPlusAlphaImage::~RGBPlusAlphaImage ()
{
- /* XXX? */
- return line_size ();
+ av_free (_alpha);
}
-Size
-RGBFrameImage::size () const
-{
- return _size;
-}
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