[FFmpeg-cvslog] vc-1: Add platform-specific start code search routine to VC1DSPContext.
Ben Avison
git at videolan.org
Fri Apr 25 02:47:34 CEST 2014
ffmpeg | branch: master | Ben Avison <bavison at riscosopen.org> | Wed Apr 16 01:51:32 2014 +0100| [9d8ecdd8ca6d248e7439e8fdf255e39eda14e0f2] | committer: Michael Niedermayer
vc-1: Add platform-specific start code search routine to VC1DSPContext.
Initialise VC1DSPContext for parser as well as for decoder.
Note, the VC-1 code doesn't actually use the function pointer yet.
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9d8ecdd8ca6d248e7439e8fdf255e39eda14e0f2
---
libavcodec/Makefile | 6 +++---
libavcodec/arm/Makefile | 2 ++
libavcodec/arm/vc1dsp_init_arm.c | 4 ++++
libavcodec/vc1.c | 2 ++
libavcodec/vc1dec.c | 1 -
libavcodec/vc1dsp.c | 3 +++
libavcodec/vc1dsp.h | 8 ++++++++
7 files changed, 22 insertions(+), 4 deletions(-)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index c4ddc8e..d6ed5e2 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -458,7 +458,7 @@ OBJS-$(CONFIG_VB_DECODER) += vb.o
OBJS-$(CONFIG_VBLE_DECODER) += vble.o
OBJS-$(CONFIG_VC1_DECODER) += vc1dec.o vc1.o vc1data.o vc1dsp.o \
msmpeg4dec.o msmpeg4.o msmpeg4data.o \
- wmv2dsp.o
+ wmv2dsp.o startcode.o
OBJS-$(CONFIG_VCR1_DECODER) += vcr1.o
OBJS-$(CONFIG_VMDAUDIO_DECODER) += vmdav.o
OBJS-$(CONFIG_VMDVIDEO_DECODER) += vmdav.o
@@ -781,9 +781,9 @@ OBJS-$(CONFIG_PNM_PARSER) += pnm_parser.o pnm.o
OBJS-$(CONFIG_RV30_PARSER) += rv34_parser.o
OBJS-$(CONFIG_RV40_PARSER) += rv34_parser.o
OBJS-$(CONFIG_TAK_PARSER) += tak_parser.o tak.o
-OBJS-$(CONFIG_VC1_PARSER) += vc1_parser.o vc1.o vc1data.o \
+OBJS-$(CONFIG_VC1_PARSER) += vc1_parser.o vc1.o vc1data.o vc1dsp.o \
msmpeg4.o msmpeg4data.o mpeg4video.o \
- h263.o
+ h263.o startcode.o
OBJS-$(CONFIG_VORBIS_PARSER) += vorbis_parser.o xiph.o
OBJS-$(CONFIG_VP3_PARSER) += vp3_parser.o
OBJS-$(CONFIG_VP8_PARSER) += vp8_parser.o
diff --git a/libavcodec/arm/Makefile b/libavcodec/arm/Makefile
index 4c7e7d2..1b21906 100644
--- a/libavcodec/arm/Makefile
+++ b/libavcodec/arm/Makefile
@@ -57,6 +57,8 @@ ARMV6-OBJS-$(CONFIG_HPELDSP) += arm/hpeldsp_init_armv6.o \
ARMV6-OBJS-$(CONFIG_MPEGAUDIODSP) += arm/mpegaudiodsp_fixed_armv6.o
ARMV6-OBJS-$(CONFIG_MLP_DECODER) += arm/mlpdsp_armv6.o
+ARMV6-OBJS-$(CONFIG_VC1_DECODER) += arm/startcode_armv6.o
+ARMV6-OBJS-$(CONFIG_VC1_PARSER) += arm/startcode_armv6.o
ARMV6-OBJS-$(CONFIG_VP7_DECODER) += arm/vp8_armv6.o \
arm/vp8dsp_init_armv6.o \
arm/vp8dsp_armv6.o
diff --git a/libavcodec/arm/vc1dsp_init_arm.c b/libavcodec/arm/vc1dsp_init_arm.c
index 47d4126..4a84848 100644
--- a/libavcodec/arm/vc1dsp_init_arm.c
+++ b/libavcodec/arm/vc1dsp_init_arm.c
@@ -23,10 +23,14 @@
#include "libavcodec/vc1dsp.h"
#include "vc1dsp.h"
+int ff_startcode_find_candidate_armv6(const uint8_t *buf, int size);
+
av_cold void ff_vc1dsp_init_arm(VC1DSPContext *dsp)
{
int cpu_flags = av_get_cpu_flags();
+ if (have_armv6(cpu_flags))
+ dsp->vc1_find_start_code_candidate = ff_startcode_find_candidate_armv6;
if (have_neon(cpu_flags))
ff_vc1dsp_init_neon(dsp);
}
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index adf4ca5..89fa7ff 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -1706,5 +1706,7 @@ av_cold int ff_vc1_init_common(VC1Context *v)
v->pq = -1;
v->mvrange = 0; /* 7.1.1.18, p80 */
+ ff_vc1dsp_init(&v->vc1dsp);
+
return 0;
}
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index d5e8a37..132ae76 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -5625,7 +5625,6 @@ static av_cold int vc1_decode_init(AVCodecContext *avctx)
ff_vc1_decode_end(avctx);
ff_h264chroma_init(&v->h264chroma, 8);
- ff_vc1dsp_init(&v->vc1dsp);
if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
int count = 0;
diff --git a/libavcodec/vc1dsp.c b/libavcodec/vc1dsp.c
index acc3aea..787a6a6 100644
--- a/libavcodec/vc1dsp.c
+++ b/libavcodec/vc1dsp.c
@@ -32,6 +32,7 @@
#include "h264chroma.h"
#include "rnd_avg.h"
#include "vc1dsp.h"
+#include "startcode.h"
/* Apply overlap transform to horizontal edge */
static void vc1_v_overlap_c(uint8_t *src, int stride)
@@ -1024,6 +1025,8 @@ av_cold void ff_vc1dsp_init(VC1DSPContext *dsp)
dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c;
#endif /* CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER */
+ dsp->vc1_find_start_code_candidate = ff_startcode_find_candidate_c;
+
if (ARCH_AARCH64)
ff_vc1dsp_init_aarch64(dsp);
if (ARCH_ARM)
diff --git a/libavcodec/vc1dsp.h b/libavcodec/vc1dsp.h
index 7cf6135..aa5b6d3 100644
--- a/libavcodec/vc1dsp.h
+++ b/libavcodec/vc1dsp.h
@@ -73,6 +73,14 @@ typedef struct VC1DSPContext {
void (*sprite_v_double_twoscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
const uint8_t *src2a, const uint8_t *src2b, int offset2,
int alpha, int width);
+
+ /**
+ * Search buf from the start for up to size bytes. Return the index
+ * of a zero byte, or >= size if not found. Ideally, use lookahead
+ * to filter out any zero bytes that are known to not be followed by
+ * one or more further zero bytes and a one byte.
+ */
+ int (*vc1_find_start_code_candidate)(const uint8_t *buf, int size);
} VC1DSPContext;
void ff_vc1dsp_init(VC1DSPContext* c);
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