[Buildroot] [PATCH] gst-ffmpeg: fix build on armv6 without thumb2 (e.g. RaspberryPi)
Arnout Vandecappelle (Essensium/Mind)
arnout at mind.be
Wed Jun 18 23:16:18 UTC 2014
Cc: Marco Trapanese <marcotrapanese at gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
---
I only build-tested this - Marco, please test it properly. Although, you
probably don't even use ac3 so the failing code won't be executed.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
---
...3_01-arm-avoid-using-the-movw-instruction.patch | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 package/gstreamer/gst-ffmpeg/gst-ffmpeg-0.10.13_01-arm-avoid-using-the-movw-instruction.patch
diff --git a/package/gstreamer/gst-ffmpeg/gst-ffmpeg-0.10.13_01-arm-avoid-using-the-movw-instruction.patch b/package/gstreamer/gst-ffmpeg/gst-ffmpeg-0.10.13_01-arm-avoid-using-the-movw-instruction.patch
new file mode 100644
index 0000000..288dc3d
--- /dev/null
+++ b/package/gstreamer/gst-ffmpeg/gst-ffmpeg-0.10.13_01-arm-avoid-using-the-movw-instruction.patch
@@ -0,0 +1,41 @@
+Date: Mon, 1 Aug 2011 20:21:04 +0300
+Subject: [libavcodec] arm: Avoid using the movw instruction needlessly
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf8
+Content-Transfer-Encoding: 8bit
+
+This fixes building for ARM11 without Thumb2.
+
+Signed-off-by: Martin Storsjö <martin at martin.st>
+
+[Arnout: backported to gst-ffmpeg, from ffmpeg 9a83adaf3]
+Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
+---
+ gst-libs/ext/libav/libavcodec/arm/ac3dsp_armv6.S | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/gst-libs/ext/libav/libavcodec/arm/ac3dsp_armv6.S b/gst-libs/ext/libav/libavcodec/arm/ac3dsp_armv6.S
+index d3058ff..b6aee86 100644
+--- a/gst-libs/ext/libav/libavcodec/arm/ac3dsp_armv6.S
++++ b/gst-libs/ext/libav/libavcodec/arm/ac3dsp_armv6.S
+@@ -37,7 +37,7 @@ function ff_ac3_bit_alloc_calc_bap_armv6, export=1
+ ldrb r10, [r4], #1
+ 1:
+ ldrsh r9, [r0], #2 @ mask[band]
+- movw r8, #0x1fe0
++ mov r8, #0xff0
+ sub r9, r9, r12 @ - snr_offset
+ mov r11, r10
+ ldrb r10, [r4], #1 @ band_start_tab[band++]
+@@ -44,7 +44,7 @@ function ff_ac3_bit_alloc_calc_bap_armv6, export=1
+ subs r9, r9, r5 @ - floor
+ movlt r9, #0
+ cmp r10, r3 @ - end
+- and r9, r9, r8 @ & 0x1fe0
++ and r9, r9, r8, lsl #1 @ & 0x1fe0
+ subgt r8, r3, r11
+ suble r8, r10, r11
+ add r9, r9, r5 @ + floor => m
+--
+1.7.10.4
+
--
2.0.0
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