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h264: Move start code search functions into separate source files.

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This permits re-use with parsers for codecs which use similar start codes.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Ben Avison 2014-07-21 16:25:48 +01:00 committed by Luca Barbato
parent eee813eec7
commit db7f1c7c5a
11 changed files with 121 additions and 38 deletions
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3
configure vendored
View File

@ -1578,6 +1578,7 @@ CONFIG_EXTRA="
rtpdec
rtpenc_chain
sinewin
startcode
tpeldsp
videodsp
vp3dsp
@ -1794,7 +1795,7 @@ h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpel
h263_encoder_select="aandcttables h263dsp mpegvideoenc"
h263i_decoder_select="h263_decoder"
h263p_encoder_select="h263_encoder"
h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
h264_decoder_suggest="error_resilience"
hevc_decoder_select="bswapdsp cabac golomb videodsp"
huffyuv_decoder_select="bswapdsp huffyuvdsp"

1
libavcodec/Makefile
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@ -79,6 +79,7 @@ OBJS-$(CONFIG_RANGECODER) += rangecoder.o
RDFT-OBJS-$(CONFIG_HARDCODED_TABLES) += sin_tables.o
OBJS-$(CONFIG_RDFT) += rdft.o $(RDFT-OBJS-yes)
OBJS-$(CONFIG_SINEWIN) += sinewin.o
OBJS-$(CONFIG_STARTCODE) += startcode.o
OBJS-$(CONFIG_TPELDSP) += tpeldsp.o
OBJS-$(CONFIG_VAAPI) += vaapi.o
OBJS-$(CONFIG_VDA) += vda.o

2
libavcodec/arm/Makefile
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@ -53,7 +53,6 @@ ARMV5TE-OBJS-$(CONFIG_VIDEODSP) += arm/videodsp_init_armv5te.o \
ARMV5TE-OBJS-$(CONFIG_MLP_DECODER) += arm/mlpdsp_armv5te.o
ARMV6-OBJS-$(CONFIG_AC3DSP) += arm/ac3dsp_armv6.o
ARMV6-OBJS-$(CONFIG_H264DSP) += arm/h264dsp_armv6.o
ARMV6-OBJS-$(CONFIG_HPELDSP) += arm/hpeldsp_init_armv6.o \
arm/hpeldsp_armv6.o
ARMV6-OBJS-$(CONFIG_IDCTDSP) += arm/idctdsp_init_armv6.o \
@ -65,6 +64,7 @@ ARMV6-OBJS-$(CONFIG_MPEGVIDEOENC) += arm/mpegvideoencdsp_armv6.o
ARMV6-OBJS-$(CONFIG_PIXBLOCKDSP) += arm/pixblockdsp_armv6.o
ARMV6-OBJS-$(CONFIG_MLP_DECODER) += arm/mlpdsp_armv6.o
ARMV6-OBJS-$(CONFIG_STARTCODE) += arm/startcode_armv6.o
ARMV6-OBJS-$(CONFIG_VP7_DECODER) += arm/vp8_armv6.o \
arm/vp8dsp_init_armv6.o \
arm/vp8dsp_armv6.o

5
libavcodec/arm/h264dsp_init_arm.c
View File

@ -23,8 +23,7 @@
#include "libavutil/attributes.h"
#include "libavutil/arm/cpu.h"
#include "libavcodec/h264dsp.h"
int ff_h264_find_start_code_candidate_armv6(const uint8_t *buf, int size);
#include "libavcodec/arm/startcode.h"
void ff_h264_v_loop_filter_luma_neon(uint8_t *pix, int stride, int alpha,
int beta, int8_t *tc0);
@ -105,7 +104,7 @@ av_cold void ff_h264dsp_init_arm(H264DSPContext *c, const int bit_depth,
int cpu_flags = av_get_cpu_flags();
if (have_setend(cpu_flags))
c->h264_find_start_code_candidate = ff_h264_find_start_code_candidate_armv6;
c->startcode_find_candidate = ff_startcode_find_candidate_armv6;
if (have_neon(cpu_flags))
h264dsp_init_neon(c, bit_depth, chroma_format_idc);
}

26
libavcodec/arm/startcode.h Normal file
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@ -0,0 +1,26 @@
/*
* 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 AVCODEC_ARM_STARTCODE_H
#define AVCODEC_ARM_STARTCODE_H
#include <stdint.h>
int ff_startcode_find_candidate_armv6(const uint8_t *buf, int size);
#endif /* AVCODEC_ARM_STARTCODE_H */

4
libavcodec/arm/h264dsp_armv6.S → libavcodec/arm/startcode_armv6.S
View File

@ -69,8 +69,8 @@ TMP3 .req lr
andseq TMP3, TMP3, PATTERN
.endm
/* int ff_h264_find_start_code_candidate_armv6(const uint8_t *buf, int size) */
function ff_h264_find_start_code_candidate_armv6, export=1
/* int ff_startcode_find_candidate_armv6(const uint8_t *buf, int size) */
function ff_startcode_find_candidate_armv6, export=1
push {v1-v6,lr}
mov PTR, BUF
@ Ensure there are at least (PRELOAD_DISTANCE+2) complete cachelines to go

2
libavcodec/h264_parser.c
View File

@ -48,7 +48,7 @@ static int h264_find_frame_end(H264Context *h, const uint8_t *buf,
for (i = 0; i < buf_size; i++) {
if (state == 7) {
i += h->h264dsp.h264_find_start_code_candidate(buf + i, buf_size - i);
i += h->h264dsp.startcode_find_candidate(buf + i, buf_size - i);
if (i < buf_size)
state = 2;
} else if (state <= 2) {

31
libavcodec/h264dsp.c
View File

@ -31,6 +31,7 @@
#include "avcodec.h"
#include "h264dsp.h"
#include "h264idct.h"
#include "startcode.h"
#include "libavutil/common.h"
#define BIT_DEPTH 8
@ -53,34 +54,6 @@
#include "h264addpx_template.c"
#undef BIT_DEPTH
static int h264_find_start_code_candidate_c(const uint8_t *buf, int size)
{
int i = 0;
#if HAVE_FAST_UNALIGNED
/* we check i < size instead of i + 3 / 7 because it is
* simpler and there must be FF_INPUT_BUFFER_PADDING_SIZE
* bytes at the end.
*/
#if HAVE_FAST_64BIT
while (i < size &&
!((~*(const uint64_t *)(buf + i) &
(*(const uint64_t *)(buf + i) - 0x0101010101010101ULL)) &
0x8080808080808080ULL))
i += 8;
#else
while (i < size &&
!((~*(const uint32_t *)(buf + i) &
(*(const uint32_t *)(buf + i) - 0x01010101U)) &
0x80808080U))
i += 4;
#endif
#endif
for (; i < size; i++)
if (!buf[i])
break;
return i;
}
av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
const int chroma_format_idc)
{
@ -161,7 +134,7 @@ av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
H264_DSP(8);
break;
}
c->h264_find_start_code_candidate = h264_find_start_code_candidate_c;
c->startcode_find_candidate = ff_startcode_find_candidate_c;
if (ARCH_AARCH64) ff_h264dsp_init_aarch64(c, bit_depth, chroma_format_idc);
if (ARCH_ARM) ff_h264dsp_init_arm(c, bit_depth, chroma_format_idc);

2
libavcodec/h264dsp.h
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@ -113,7 +113,7 @@ typedef struct H264DSPContext {
* one or more further zero bytes and a one byte. Better still, filter
* out any bytes that form the trailing_zero_8bits syntax element too.
*/
int (*h264_find_start_code_candidate)(const uint8_t *buf, int size);
int (*startcode_find_candidate)(const uint8_t *buf, int size);
} H264DSPContext;
void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,

57
libavcodec/startcode.c Normal file
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@ -0,0 +1,57 @@
/*
* Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at>
*
* 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
*/
/**
* @file
* Accelerated start code search function for start codes common to
* MPEG-1/2/4 video, VC-1, H.264/5
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#include "startcode.h"
#include "config.h"
int ff_startcode_find_candidate_c(const uint8_t *buf, int size)
{
int i = 0;
#if HAVE_FAST_UNALIGNED
/* we check i < size instead of i + 3 / 7 because it is
* simpler and there must be FF_INPUT_BUFFER_PADDING_SIZE
* bytes at the end.
*/
#if HAVE_FAST_64BIT
while (i < size &&
!((~*(const uint64_t *)(buf + i) &
(*(const uint64_t *)(buf + i) - 0x0101010101010101ULL)) &
0x8080808080808080ULL))
i += 8;
#else
while (i < size &&
!((~*(const uint32_t *)(buf + i) &
(*(const uint32_t *)(buf + i) - 0x01010101U)) &
0x80808080U))
i += 4;
#endif
#endif
for (; i < size; i++)
if (!buf[i])
break;
return i;
}

26
libavcodec/startcode.h Normal file
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@ -0,0 +1,26 @@
/*
* 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 AVCODEC_STARTCODE_H
#define AVCODEC_STARTCODE_H
#include <stdint.h>
int ff_startcode_find_candidate_c(const uint8_t *buf, int size);
#endif /* AVCODEC_STARTCODE_H */