#include <libavfilter/avfiltergraph.h>
#include <libpostproc/postprocess.h>
#include <libavutil/pixfmt.h>
+#include <libavutil/pixdesc.h>
}
#include "image.h"
#include "exceptions.h"
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:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV444P:
- case PIX_FMT_YUV444P9BE:
- case PIX_FMT_YUV444P9LE:
- case PIX_FMT_YUV444P10BE:
- case PIX_FMT_YUV444P10LE:
- case PIX_FMT_UYVY422:
+ if (n == 0) {
return size().height;
- default:
+ }
+
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
throw PixelFormatError (N_("lines()"), _pixel_format);
}
-
- return 0;
+
+ 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:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV444P:
- case PIX_FMT_YUV444P9BE:
- case PIX_FMT_YUV444P9LE:
- case PIX_FMT_YUV444P10BE:
- case PIX_FMT_YUV444P10LE:
- return 3;
- case PIX_FMT_RGB24:
- case PIX_FMT_RGBA:
- case PIX_FMT_UYVY422:
- return 1;
- default:
+ 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>
* @param scaler Scaler to use.
*/
shared_ptr<Image>
-Image::scale_and_convert_to_rgb (libdcp::Size out_size, int padding, Scaler const * scaler, bool result_aligned) 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
*/
assert (aligned ());
- libdcp::Size content_size = out_size;
- content_size.width -= (padding * 2);
-
- shared_ptr<Image> rgb (new SimpleImage (PIX_FMT_RGB24, content_size, result_aligned));
+ 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 SimpleImage (PIX_FMT_RGB24, out_size, result_aligned));
- 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;
/* 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 < cropped_size.height; ++y) {
+
+ 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];
Image::make_black ()
{
/* U/V black value for 8-bit colour */
- static uint8_t const eight_bit_uv = (1 << 7) - 1;
-
+ 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;
-
+ 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;
+ 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()[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);
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;
}
}
+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)
{
float
Image::bytes_per_pixel (int c) const
{
- if (c == 3) {
+ 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);
+ }
- switch (_pixel_format) {
- case PIX_FMT_RGB24:
- if (c == 0) {
- return 3;
- } else {
- return 0;
- }
- case PIX_FMT_RGBA:
- if (c == 0) {
- return 4;
- } else {
- return 0;
- }
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUV422P:
- if (c == 0) {
- return 1;
- } else {
- return 0.5;
- }
- case PIX_FMT_YUV422P10LE:
- if (c == 0) {
- return 2;
- } else {
- return 1;
- }
- case PIX_FMT_UYVY422:
- return 2;
- case PIX_FMT_YUV444P:
- return 3;
- case PIX_FMT_YUV444P9BE:
- case PIX_FMT_YUV444P9LE:
- case PIX_FMT_YUV444P10LE:
- case PIX_FMT_YUV444P10BE:
- return 6;
- default:
- throw PixelFormatError (N_("bytes_per_pixel()"), _pixel_format);
+ if ((d->flags & PIX_FMT_PLANAR) == 0) {
+ /* Not planar; sum them up */
+ return bpp[0] + bpp[1] + bpp[2] + bpp[3];
}
- return 0;
+ return bpp[c];
}
-
/** Construct a SimpleImage of a given size and format, allocating memory
* as required.
*
SimpleImage::SimpleImage (SimpleImage const & other)
: Image (other)
+ , _size (other._size)
+ , _aligned (other._aligned)
{
- _size = other._size;
- _aligned = other._aligned;
-
allocate ();
for (int i = 0; i < components(); ++i) {
- memcpy (_data[i], other._data[i], _line_size[i] * lines(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];
+ }
+ }
+}
+
+SimpleImage::SimpleImage (AVFrame* frame)
+ : Image (static_cast<AVPixelFormat> (frame->format))
+ , _size (frame->width, frame->height)
+ , _aligned (true)
+{
+ allocate ();
+
+ 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];
+ }
+ }
+}
+
+SimpleImage::SimpleImage (shared_ptr<const Image> other)
+ : Image (*other.get())
+{
+ _size = other->size ();
+ _aligned = true;
+
+ 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];
+ }
}
}
return _aligned;
}
-shared_ptr<Image>
-SimpleImage::clone () const
-{
- return shared_ptr<Image> (new SimpleImage (*this));
-}
-
-FilterBufferImage::FilterBufferImage (AVPixelFormat p, AVFilterBufferRef* b)
- : Image (p)
- , _buffer (b)
-{
- _line_size = (int *) av_malloc (4 * sizeof (int));
- _line_size[0] = _line_size[1] = _line_size[2] = _line_size[3] = 0;
-
- for (int i = 0; i < components(); ++i) {
- _line_size[i] = size().width * bytes_per_pixel(i);
- }
-}
-
-FilterBufferImage::~FilterBufferImage ()
-{
- avfilter_unref_buffer (_buffer);
- av_free (_line_size);
-}
-
-uint8_t **
-FilterBufferImage::data () const
-{
- return _buffer->data;
-}
-
-int *
-FilterBufferImage::line_size () const
-{
- return _line_size;
-}
-
-int *
-FilterBufferImage::stride () const
-{
- /* I've seen images where the _buffer->linesize is larger than the width
- (by a small amount), suggesting that _buffer->linesize is what we call
- stride. But I'm not sure.
- */
- return _buffer->linesize;
-}
-
-libdcp::Size
-FilterBufferImage::size () const
-{
- return libdcp::Size (_buffer->video->w, _buffer->video->h);
-}
-
-bool
-FilterBufferImage::aligned () const
-{
- /* XXX? */
- return true;
-}
-
RGBPlusAlphaImage::RGBPlusAlphaImage (shared_ptr<const Image> im)
: SimpleImage (im->pixel_format(), im->size(), false)
{
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