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vo_xv: make number of buffers configurable

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This commit is contained in:
wm4 2015-05-20 23:07:47 +02:00
parent 9bd3ae311f
commit 8724e3e2dd
2 changed files with 14 additions and 3 deletions
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6
DOCS/man/vo.rst
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@ -69,6 +69,12 @@ Available video output drivers are:
``no-colorkey``
Disables color-keying.
``buffers=<number>``
Number of image buffers to use for the internal ringbuffer (default: 2).
Increasing this will use more memory, but might help with the X server
not responding quickly enough if video FPS is close to or higher than
the display refresh rate.
``x11`` (X11 only)
Shared memory video output driver without hardware acceleration that works
whenever X11 is present.

11
video/out/vo_xv.c
View File

@ -63,6 +63,8 @@
#define CK_SRC_SET 1 // use and set specified / default colorkey
#define CK_SRC_CUR 2 // use current colorkey (get it from xv)
#define MAX_BUFFERS 10
struct xvctx {
struct xv_ck_info_s {
int method; // CK_METHOD_* constants
@ -72,13 +74,14 @@ struct xvctx {
unsigned long xv_colorkey;
int xv_port;
int cfg_xv_adaptor;
int cfg_buffers;
XvAdaptorInfo *ai;
XvImageFormatValues *fo;
unsigned int formats, adaptors, xv_format;
int current_buf;
int current_ip_buf;
int num_buffers;
XvImage *xvimage[2];
XvImage *xvimage[MAX_BUFFERS];
struct mp_image *original_image;
uint32_t image_width;
uint32_t image_height;
@ -89,7 +92,7 @@ struct xvctx {
uint32_t max_width, max_height; // zero means: not set
int Shmem_Flag;
#if HAVE_SHM && HAVE_XEXT
XShmSegmentInfo Shminfo[2];
XShmSegmentInfo Shminfo[MAX_BUFFERS];
int Shm_Warned_Slow;
#endif
};
@ -463,7 +466,7 @@ static int reconfig(struct vo *vo, struct mp_image_params *params, int flags)
for (i = 0; i < ctx->num_buffers; i++)
deallocate_xvimage(vo, i);
ctx->num_buffers = 2;
ctx->num_buffers = ctx->cfg_buffers;
for (i = 0; i < ctx->num_buffers; i++) {
if (!allocate_xvimage(vo, i)) {
@ -848,6 +851,7 @@ const struct vo_driver video_out_xv = {
.xv_ck_info = {CK_METHOD_MANUALFILL, CK_SRC_CUR},
.colorkey = 0x0000ff00, // default colorkey is green
// (0xff000000 means that colorkey has been disabled)
.cfg_buffers = 2,
},
.options = (const struct m_option[]) {
OPT_INT("port", xv_port, M_OPT_MIN, .min = 0),
@ -862,6 +866,7 @@ const struct vo_driver video_out_xv = {
{"auto", CK_METHOD_AUTOPAINT})),
OPT_INT("colorkey", colorkey, 0),
OPT_FLAG_STORE("no-colorkey", colorkey, 0, 0x1000000),
OPT_INTRANGE("buffers", cfg_buffers, 0, 1, MAX_BUFFERS),
{0}
},
};