From ca52328200d202eff51e3bdb0b1a54b4d717c4c4 Mon Sep 17 00:00:00 2001
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From: Damian Hobson-Garcia <dhobsong@igel.co.jp>
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Date: Wed, 21 Mar 2018 13:18:17 +0200
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Subject: [PATCH 02/17] Add mmap via libv4l to generic_v4l2_device
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Issue #437
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---
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media/gpu/v4l2/generic_v4l2_device.cc | 10 ++++++++++
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media/gpu/v4l2/v4l2.sig | 2 ++
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2 files changed, 12 insertions(+)
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diff --git a/media/gpu/v4l2/generic_v4l2_device.cc b/media/gpu/v4l2/generic_v4l2_device.cc
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index becf30c9c..a3fe307c8 100644
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--- a/media/gpu/v4l2/generic_v4l2_device.cc
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+++ b/media/gpu/v4l2/generic_v4l2_device.cc
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@@ -124,10 +124,20 @@ void* GenericV4L2Device::Mmap(void* addr,
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int flags,
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unsigned int offset) {
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DCHECK(device_fd_.is_valid());
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+#if BUILDFLAG(USE_LIBV4L2)
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+ if (use_libv4l2_)
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+ return v4l2_mmap(addr, len, prot, flags, device_fd_.get(), offset);
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+#endif
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return mmap(addr, len, prot, flags, device_fd_.get(), offset);
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}
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void GenericV4L2Device::Munmap(void* addr, unsigned int len) {
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+#if BUILDFLAG(USE_LIBV4L2)
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+ if (use_libv4l2_) {
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+ v4l2_munmap(addr, len);
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+ return;
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+ }
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+#endif
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munmap(addr, len);
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}
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diff --git a/media/gpu/v4l2/v4l2.sig b/media/gpu/v4l2/v4l2.sig
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index 4269fb48d..71b5b3787 100644
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--- a/media/gpu/v4l2/v4l2.sig
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+++ b/media/gpu/v4l2/v4l2.sig
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@@ -8,3 +8,5 @@
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LIBV4L_PUBLIC int v4l2_close(int fd);
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LIBV4L_PUBLIC int v4l2_ioctl(int fd, unsigned long int request, ...);
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LIBV4L_PUBLIC int v4l2_fd_open(int fd, int v4l2_flags);
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+LIBV4L_PUBLIC void *v4l2_mmap(void *start, size_t length, int prot, int flags, int fd, int64_t offset);
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+LIBV4L_PUBLIC int v4l2_munmap(void *_start, size_t length);
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--
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2.20.1
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