Package: uvccapture Version: 0.5-2.1 Severity: normal Tags: upstream patch My camera is unable to allocate 16 buffers, but returns 15 instead. uvccapture tries to map 16 of them anyway, which means it doesn't work.
-- System Information: Debian Release: jessie/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable') Architecture: i386 (i686) Kernel: Linux 3.10-3-686-pae (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages uvccapture depends on: ii libc6 2.17-93 ii libjpeg8 8d-1 uvccapture recommends no packages. uvccapture suggests no packages. -- no debconf information
Description: Use returned number of buffers instead of requested. VIDIOC_REQBUFS stores the number of actually allocated buffers. This patch uses this value instead of assuming it is equal to the requested number. Author: Bas Wijnen <[email protected]> Last-Update: 2013-10-19 --- uvccapture-0.5.orig/v4l2uvc.c +++ uvccapture-0.5/v4l2uvc.c @@ -202,7 +202,7 @@ init_v4l2 (struct vdIn *vd) goto fatal; } /* map the buffers */ - for (i = 0; i < NB_BUFFER; i++) { + for (i = 0; i < vd->rb.count; i++) { memset (&vd->buf, 0, sizeof (struct v4l2_buffer)); vd->buf.index = i; vd->buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; @@ -226,7 +226,7 @@ init_v4l2 (struct vdIn *vd) fprintf (stderr, "Buffer mapped at address %p.\n", vd->mem[i]); } /* Queue the buffers. */ - for (i = 0; i < NB_BUFFER; ++i) { + for (i = 0; i < vd->rb.count; ++i) { memset (&vd->buf, 0, sizeof (struct v4l2_buffer)); vd->buf.index = i; vd->buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; @@ -335,7 +335,7 @@ close_v4l2 (struct vdIn *vd) /* If the memory maps are not released the device will remain opened even after a call to close(); */ - for (i = 0; i < NB_BUFFER; i++) { + for (i = 0; i < vd->rb.count; i++) { munmap (vd->mem[i], vd->buf.length); }
