[FFmpeg-devel] [PATCH] v210enc: Add x86 SIMD
Kieran Kunhya
kierank at obe.tv
Sat Nov 22 21:58:05 CET 2014
---
libavcodec/v210enc.c | 78 ++++++++++++++++++++++++++++++-------------
libavcodec/v210enc.h | 31 +++++++++++++++++
libavcodec/x86/Makefile | 2 ++
libavcodec/x86/v210enc.asm | 76 +++++++++++++++++++++++++++++++++++++++++
libavcodec/x86/v210enc_init.c | 31 +++++++++++++++++
5 files changed, 195 insertions(+), 23 deletions(-)
create mode 100644 libavcodec/v210enc.h
create mode 100644 libavcodec/x86/v210enc.asm
create mode 100644 libavcodec/x86/v210enc_init.c
diff --git a/libavcodec/v210enc.c b/libavcodec/v210enc.c
index ef0d6ab..4a6bdfc 100644
--- a/libavcodec/v210enc.c
+++ b/libavcodec/v210enc.c
@@ -24,9 +24,37 @@
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
+#include "v210enc.h"
+
+#define CLIP(v) av_clip(v, 4, 1019)
+
+#define WRITE_PIXELS(a, b, c) \
+ do { \
+ val = CLIP(*a++); \
+ val |= (CLIP(*b++) << 10) | \
+ (CLIP(*c++) << 20); \
+ AV_WL32(dst, val); \
+ dst += 4; \
+ } while (0)
+
+static void v210_planar_pack_c(const uint16_t *y, const uint16_t *u,
+ const uint16_t *v, uint8_t *dst, ptrdiff_t width)
+{
+ uint32_t val;
+ int i;
+
+ for( i = 0; i < width-5; i += 6 ){
+ WRITE_PIXELS(u, y, v);
+ WRITE_PIXELS(y, u, y);
+ WRITE_PIXELS(v, y, u);
+ WRITE_PIXELS(y, v, y);
+ }
+}
static av_cold int encode_init(AVCodecContext *avctx)
{
+ V210EncContext *s = avctx->priv_data;
+
if (avctx->width & 1) {
av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
return AVERROR(EINVAL);
@@ -42,12 +70,19 @@ static av_cold int encode_init(AVCodecContext *avctx)
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+ s->pack_line = v210_planar_pack_c;
+
+ if (HAVE_MMX)
+ v210enc_x86_init(s);
+
return 0;
}
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet)
{
+ V210EncContext *s = avctx->priv_data;
+
int aligned_width = ((avctx->width + 47) / 48) * 48;
int stride = aligned_width * 8 / 3;
int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
@@ -55,49 +90,45 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const uint16_t *y = (const uint16_t*)pic->data[0];
const uint16_t *u = (const uint16_t*)pic->data[1];
const uint16_t *v = (const uint16_t*)pic->data[2];
- PutByteContext p;
+ uint8_t *dst;
if ((ret = ff_alloc_packet(pkt, avctx->height * stride)) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
return ret;
}
- bytestream2_init_writer(&p, pkt->data, pkt->size);
-
-#define CLIP(v) av_clip(v, 4, 1019)
-
-#define WRITE_PIXELS(a, b, c) \
- do { \
- val = CLIP(*a++); \
- val |= (CLIP(*b++) << 10) | \
- (CLIP(*c++) << 20); \
- bytestream2_put_le32u(&p, val); \
- } while (0)
+ dst = pkt->data;
for (h = 0; h < avctx->height; h++) {
uint32_t val;
- for (w = 0; w < avctx->width - 5; w += 6) {
- WRITE_PIXELS(u, y, v);
- WRITE_PIXELS(y, u, y);
- WRITE_PIXELS(v, y, u);
- WRITE_PIXELS(y, v, y);
- }
+ w = (avctx->width / 6) * 6;
+ s->pack_line(y, u, v, dst, w);
+
+ y += w;
+ u += w >> 1;
+ v += w >> 1;
+ dst += (w / 6) * 16;
if (w < avctx->width - 1) {
WRITE_PIXELS(u, y, v);
val = CLIP(*y++);
- if (w == avctx->width - 2)
- bytestream2_put_le32u(&p, val);
+ if (w == avctx->width - 2) {
+ AV_WL32(dst, val);
+ dst += 4;
+ }
}
if (w < avctx->width - 3) {
val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20);
- bytestream2_put_le32u(&p, val);
+ AV_WL32(dst, val);
+ dst += 4;
val = CLIP(*v++) | (CLIP(*y++) << 10);
- bytestream2_put_le32u(&p, val);
+ AV_WL32(dst, val);
+ dst += 4;
}
- bytestream2_set_buffer(&p, 0, line_padding);
+ memset(dst, 0, line_padding);
+ dst += line_padding;
y += pic->linesize[0] / 2 - avctx->width;
u += pic->linesize[1] / 2 - avctx->width / 2;
@@ -121,6 +152,7 @@ AVCodec ff_v210_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_V210,
+ .priv_data_size = sizeof(V210EncContext),
.init = encode_init,
.encode2 = encode_frame,
.close = encode_close,
diff --git a/libavcodec/v210enc.h b/libavcodec/v210enc.h
new file mode 100644
index 0000000..b8b6143
--- /dev/null
+++ b/libavcodec/v210enc.h
@@ -0,0 +1,31 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCOENC_V210ENC_H
+#define AVCOENC_V210ENC_H
+
+#include "libavutil/log.h"
+#include "libavutil/opt.h"
+
+typedef struct {
+ void (*pack_line)(const uint16_t *y, const uint16_t *u, const uint16_t *v, uint8_t *dst, ptrdiff_t width);
+} V210EncContext;
+
+void v210enc_x86_init(V210EncContext *s);
+
+#endif /* AVCOENC_V210ENC_H */
diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index 3cec000..705ade5 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -47,6 +47,7 @@ OBJS-$(CONFIG_RV40_DECODER) += x86/rv34dsp_init.o \
x86/rv40dsp_init.o
OBJS-$(CONFIG_SVQ1_ENCODER) += x86/svq1enc.o
OBJS-$(CONFIG_TRUEHD_DECODER) += x86/mlpdsp.o
+OBJS-$(CONFIG_V210_ENCODER) += x86/v210enc_init.o
OBJS-$(CONFIG_VC1_DECODER) += x86/vc1dsp_init.o
OBJS-$(CONFIG_VORBIS_DECODER) += x86/vorbisdsp_init.o
OBJS-$(CONFIG_VP6_DECODER) += x86/vp6dsp_init.o
@@ -120,6 +121,7 @@ YASM-OBJS-$(CONFIG_PRORES_DECODER) += x86/proresdsp.o
YASM-OBJS-$(CONFIG_RV30_DECODER) += x86/rv34dsp.o
YASM-OBJS-$(CONFIG_RV40_DECODER) += x86/rv34dsp.o \
x86/rv40dsp.o
+YASM-OBJS-$(CONFIG_V210_ENCODER) += x86/v210enc.o
YASM-OBJS-$(CONFIG_VC1_DECODER) += x86/vc1dsp.o
YASM-OBJS-$(CONFIG_VORBIS_DECODER) += x86/vorbisdsp.o
YASM-OBJS-$(CONFIG_VP6_DECODER) += x86/vp6dsp.o
diff --git a/libavcodec/x86/v210enc.asm b/libavcodec/x86/v210enc.asm
new file mode 100644
index 0000000..ca3edf4
--- /dev/null
+++ b/libavcodec/x86/v210enc.asm
@@ -0,0 +1,76 @@
+;******************************************************************************
+;* V210 SIMD pack
+;* Copyright (c) 2014 Kieran Kunhya <kierank at obe.tv>
+;*
+;* This file is part of Libav.
+;*
+;* Libav is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* Libav is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with Libav; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "libavutil/x86/x86util.asm"
+
+SECTION_RODATA
+
+v210_enc_min: times 8 dw 0x4
+v210_enc_max: times 8 dw 0x3fb
+
+v210_enc_luma_mult: dw 4,1,16,4,1,16,0,0
+v210_enc_luma_shuf: db -1,0,1,-1,2,3,4,5,-1,6,7,-1,8,9,10,11
+
+v210_enc_chroma_mult: dw 1,4,16,0,16,1,4,0
+v210_enc_chroma_shuf: db 0,1,8,9,-1,2,3,-1,10,11,4,5,-1,12,13,-1
+
+SECTION .text
+
+%macro v210_planar_pack 0
+
+; v210_planar_pack(const uint16_t *y, const uint16_t *u, const uint16_t *v, uint8_t *dst, ptrdiff_t width)
+cglobal v210_planar_pack, 5, 5, 4, y, u, v, dst, width
+ lea r0, [r0+2*widthq]
+ add uq, widthq
+ add vq, widthq
+ neg widthq
+
+ movu m2, [v210_enc_min]
+ movu m3, [v210_enc_max]
+
+.loop
+ movu m0, [yq+2*widthq]
+ CLIPW m0, m2, m3
+
+ movq m1, [uq+widthq]
+ movhps m1, [vq+widthq]
+ CLIPW m1, m2, m3
+
+ pmullw m0, [v210_enc_luma_mult]
+ pshufb m0, [v210_enc_luma_shuf]
+
+ pmullw m1, [v210_enc_chroma_mult]
+ pshufb m1, [v210_enc_chroma_shuf]
+
+ por m0, m1
+
+ movu [dstq], m0
+
+ add dstq, mmsize
+ add widthq, 6
+ jl .loop
+
+ REP_RET
+%endmacro
+
+INIT_XMM ssse3
+v210_planar_pack
+
diff --git a/libavcodec/x86/v210enc_init.c b/libavcodec/x86/v210enc_init.c
new file mode 100644
index 0000000..524ec7a
--- /dev/null
+++ b/libavcodec/x86/v210enc_init.c
@@ -0,0 +1,31 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/x86/asm.h"
+#include "libavutil/x86/cpu.h"
+#include "libavcodec/v210enc.h"
+
+extern void ff_v210_planar_pack_ssse3(const uint16_t *y, const uint16_t *u, const uint16_t *v, uint8_t *dst, ptrdiff_t width);
+
+av_cold void v210enc_x86_init(V210EncContext *s)
+{
+ int cpu_flags = av_get_cpu_flags();
+
+ if( EXTERNAL_SSSE3(cpu_flags) )
+ s->pack_line = ff_v210_planar_pack_ssse3;
+}
--
1.9.1
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