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Merge remote-tracking branch 'lukaszmluki/master'

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* lukaszmluki/master:
  lavd/xv: implement repaint message
  lavd/xv: add window id param
  lavd/xv: keep aspect ratio

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-04-20 05:43:23 +02:00
commit cd4faed893
2 changed files with 107 additions and 12 deletions
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9
doc/outdevs.texi
View File

@ -388,19 +388,26 @@ For example, @code{dual-headed:0.1} would specify screen 1 of display
Check the X11 specification for more detailed information about the
display name format.
@item window_id
When set to non-zero value then device doesn't create new window,
but uses existing one with provided @var{window_id}. By default
this options is set to zero and device creates its own window.
@item window_size
Set the created window size, can be a string of the form
@var{width}x@var{height} or a video size abbreviation. If not
specified it defaults to the size of the input video.
Ignored when @var{window_id} is set.
@item window_x
@item window_y
Set the X and Y window offsets for the created window. They are both
set to 0 by default. The values may be ignored by the window manager.
Ignored when @var{window_id} is set.
@item window_title
Set the window title, if not specified default to the filename
specified for the output device.
specified for the output device. Ignored when @var{window_id} is set.
@end table
For more information about XVideo see @url{http://www.x.org/}.

110
libavdevice/xv.c
View File

@ -24,7 +24,6 @@
*
* TODO:
* - add support to more formats
* - add support to window id specification
*/
#include <X11/Xlib.h>
@ -44,9 +43,12 @@ typedef struct {
GC gc;
Window window;
int64_t window_id;
char *window_title;
int window_width, window_height;
int window_x, window_y;
int dest_x, dest_y; /**< display area position */
unsigned int dest_w, dest_h; /**< display area dimensions */
Display* display;
char *display_name;
@ -103,6 +105,8 @@ static int xv_write_header(AVFormatContext *s)
unsigned int num_adaptors;
XvAdaptorInfo *ai;
XvImageFormatValues *fv;
XColor fgcolor;
XWindowAttributes window_attrs;
int num_formats = 0, j, tag, ret;
AVCodecContext *encctx = s->streams[0]->codec;
@ -140,6 +144,8 @@ static int xv_write_header(AVFormatContext *s)
xv->window_height = av_rescale(xv->window_height, sar.den, sar.num);
}
}
if (!xv->window_id) {
//TODO: reident
xv->window = XCreateSimpleWindow(xv->display, DefaultRootWindow(xv->display),
xv->window_x, xv->window_y,
xv->window_width, xv->window_height,
@ -152,6 +158,8 @@ static int xv_write_header(AVFormatContext *s)
}
XStoreName(xv->display, xv->window, xv->window_title);
XMapWindow(xv->display, xv->window);
} else
xv->window = xv->window_id;
if (XvQueryAdaptors(xv->display, DefaultRootWindow(xv->display), &num_adaptors, &ai) != Success) {
ret = AVERROR_EXTERNAL;
@ -199,33 +207,100 @@ static int xv_write_header(AVFormatContext *s)
XSync(xv->display, False);
shmctl(xv->yuv_shminfo.shmid, IPC_RMID, 0);
XGetWindowAttributes(xv->display, xv->window, &window_attrs);
fgcolor.red = fgcolor.green = fgcolor.blue = 0;
fgcolor.flags = DoRed | DoGreen | DoBlue;
XAllocColor(xv->display, window_attrs.colormap, &fgcolor);
XSetForeground(xv->display, xv->gc, fgcolor.pixel);
//force display area recalculation at first frame
xv->window_width = xv->window_height = 0;
return 0;
fail:
xv_write_trailer(s);
return ret;
}
static void compute_display_area(AVFormatContext *s)
{
XVContext *xv = s->priv_data;
AVRational sar, dar; /* sample and display aspect ratios */
AVStream *st = s->streams[0];
AVCodecContext *encctx = st->codec;
/* compute overlay width and height from the codec context information */
sar = st->sample_aspect_ratio.num ? st->sample_aspect_ratio : (AVRational){ 1, 1 };
dar = av_mul_q(sar, (AVRational){ encctx->width, encctx->height });
/* we suppose the screen has a 1/1 sample aspect ratio */
/* fit in the window */
if (av_cmp_q(dar, (AVRational){ xv->dest_w, xv->dest_h }) > 0) {
/* fit in width */
xv->dest_y = xv->dest_h;
xv->dest_x = 0;
xv->dest_h = av_rescale(xv->dest_w, dar.den, dar.num);
xv->dest_y -= xv->dest_h;
xv->dest_y /= 2;
} else {
/* fit in height */
xv->dest_x = xv->dest_w;
xv->dest_y = 0;
xv->dest_w = av_rescale(xv->dest_h, dar.num, dar.den);
xv->dest_x -= xv->dest_w;
xv->dest_x /= 2;
}
}
static int xv_repaint(AVFormatContext *s)
{
XVContext *xv = s->priv_data;
XWindowAttributes window_attrs;
XGetWindowAttributes(xv->display, xv->window, &window_attrs);
if (window_attrs.width != xv->window_width || window_attrs.height != xv->window_height) {
XRectangle rect[2];
xv->dest_w = window_attrs.width;
xv->dest_h = window_attrs.height;
compute_display_area(s);
if (xv->dest_x) {
rect[0].width = rect[1].width = xv->dest_x;
rect[0].height = rect[1].height = window_attrs.height;
rect[0].y = rect[1].y = 0;
rect[0].x = 0;
rect[1].x = xv->dest_w + xv->dest_x;
XFillRectangles(xv->display, xv->window, xv->gc, rect, 2);
}
if (xv->dest_y) {
rect[0].width = rect[1].width = window_attrs.width;
rect[0].height = rect[1].height = xv->dest_y;
rect[0].x = rect[1].x = 0;
rect[0].y = 0;
rect[1].y = xv->dest_h + xv->dest_y;
XFillRectangles(xv->display, xv->window, xv->gc, rect, 2);
}
}
if (XvShmPutImage(xv->display, xv->xv_port, xv->window, xv->gc,
xv->yuv_image, 0, 0, xv->image_width, xv->image_height,
xv->dest_x, xv->dest_y, xv->dest_w, xv->dest_h, True) != Success) {
av_log(s, AV_LOG_ERROR, "Could not copy image to XV shared memory buffer\n");
return AVERROR_EXTERNAL;
}
return 0;
}
static int write_picture(AVFormatContext *s, AVPicture *pict)
{
XVContext *xv = s->priv_data;
XvImage *img = xv->yuv_image;
XWindowAttributes window_attrs;
uint8_t *data[3] = {
img->data + img->offsets[0],
img->data + img->offsets[1],
img->data + img->offsets[2]
};
av_image_copy(data, img->pitches, (const uint8_t **)pict->data, pict->linesize,
xv->image_format, img->width, img->height);
XGetWindowAttributes(xv->display, xv->window, &window_attrs);
if (XvShmPutImage(xv->display, xv->xv_port, xv->window, xv->gc,
xv->yuv_image, 0, 0, xv->image_width, xv->image_height, 0, 0,
window_attrs.width, window_attrs.height, True) != Success) {
av_log(s, AV_LOG_ERROR, "Could not copy image to XV shared memory buffer\n");
return AVERROR_EXTERNAL;
}
return 0;
return xv_repaint(s);
}
static int xv_write_packet(AVFormatContext *s, AVPacket *pkt)
@ -246,9 +321,21 @@ static int xv_write_frame(AVFormatContext *s, int stream_index, AVFrame **frame,
return write_picture(s, (AVPicture *)*frame);
}
static int xv_control_message(AVFormatContext *s, int type, void *data, size_t data_size)
{
switch(type) {
case AV_APP_TO_DEV_WINDOW_REPAINT:
return xv_repaint(s);
default:
break;
}
return AVERROR(ENOSYS);
}
#define OFFSET(x) offsetof(XVContext, x)
static const AVOption options[] = {
{ "display_name", "set display name", OFFSET(display_name), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_id", "set existing window id", OFFSET(window_id), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_size", "set window forced size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_title", "set window title", OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_x", "set window x offset", OFFSET(window_x), AV_OPT_TYPE_INT, {.i64 = 0 }, -INT_MAX, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
@ -275,6 +362,7 @@ AVOutputFormat ff_xv_muxer = {
.write_packet = xv_write_packet,
.write_uncoded_frame = xv_write_frame,
.write_trailer = xv_write_trailer,
.control_message = xv_control_message,
.flags = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
.priv_class = &xv_class,
};