[FFmpeg-devel] [PATCH 2/7] avcodec/dsd: Use double for LUTs

[FFmpeg-devel] [PATCH 2/7] avcodec/dsd: Use double for LUTs

[Andreas Rheinhardt]

Needed to make DSD->PCM conversion bitexact across arches.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/dsd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/dsd.c b/libavcodec/dsd.c
index e039302c99..ec63a706f6 100644
--- a/libavcodec/dsd.c
+++ b/libavcodec/dsd.c
@@ -68,7 +68,7 @@ static const double htaps[HTAPS] = {
      3.423230509967409e-07,  1.244182214744588e-07,  3.130441005359396e-08
 };
 
-static float ctables[CTABLES][256];
+static double ctables[CTABLES][256];
 
 static av_cold void dsd_ctables_tableinit(void)
 {
-- 
2.40.1

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[FFmpeg-devel] [PATCH 3/7] fate/wavpack: Add test for DSD

[Andreas Rheinhardt]

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
Tested on aarch64, alpha, arm, mips, ppc and riscv via qemu;
of course also tested on x64 and x86.

 tests/fate/wavpack.mak              | 3 +++
 tests/ref/fate/wavpack-lossless-dsd | 1 +
 2 files changed, 4 insertions(+)
 create mode 100644 tests/ref/fate/wavpack-lossless-dsd

diff --git a/tests/fate/wavpack.mak b/tests/fate/wavpack.mak
index c684d93f99..41e1b0afad 100644
--- a/tests/fate/wavpack.mak
+++ b/tests/fate/wavpack.mak
@@ -18,6 +18,9 @@ fate-wavpack-lossless-32bit: CMD = md5pipe -i $(TARGET_SAMPLES)/wavpack/lossless
 FATE_WAVPACK_F32 += fate-wavpack-lossless-float
 fate-wavpack-lossless-float: CMD = md5pipe -i $(TARGET_SAMPLES)/wavpack/lossless/32bit_float-partial.wv -f f32le -af aresample
 
+FATE_WAVPACK_F32 += fate-wavpack-lossless-dsd
+fate-wavpack-lossless-dsd: CMD = md5pipe -i $(TARGET_SAMPLES)/wavpack/lossless/dsd.wv -f f32le -af aresample
+
 # lossy
 
 FATE_WAVPACK_S8 += fate-wavpack-lossy-8bit
diff --git a/tests/ref/fate/wavpack-lossless-dsd b/tests/ref/fate/wavpack-lossless-dsd
new file mode 100644
index 0000000000..eba76df518
--- /dev/null
+++ b/tests/ref/fate/wavpack-lossless-dsd
@@ -0,0 +1 @@
+0b33207f1ec7e47333878cb8420c21ce
-- 
2.40.1

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[FFmpeg-devel] [PATCH 2/7] avcodec/dsd: Use double for LUTs

[Andreas Rheinhardt]

Needed to make DSD->PCM conversion bitexact across arches.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/dsd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/dsd.c b/libavcodec/dsd.c
index e039302c99..ec63a706f6 100644
--- a/libavcodec/dsd.c
+++ b/libavcodec/dsd.c
@@ -68,7 +68,7 @@ static const double htaps[HTAPS] = {
      3.423230509967409e-07,  1.244182214744588e-07,  3.130441005359396e-08
 };
 
-static float ctables[CTABLES][256];
+static double ctables[CTABLES][256];
 
 static av_cold void dsd_ctables_tableinit(void)
 {
-- 
2.40.1

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