[FFmpeg-cvslog] Remove H.264 encoder fragments
Alex Converse
git
Sun Jan 23 21:01:55 CET 2011
ffmpeg | branch: master | Alex Converse <alex.converse at gmail.com> | Sat Jan 22 03:49:55 2011 +0000| [d5ec00ba57d8e20aeddca88281a4441c5d80d9f7] | committer: Michael Niedermayer
Remove H.264 encoder fragments
It's incomplete, no one is working on it, and when someone asks about
working on it we advise them not to.
Signed-off-by: Mans Rullgard <mans at mansr.com>
(cherry picked from commit ff3d43104fa5df0a3f4b52ff9b989ce2d11ad35d)
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d5ec00ba57d8e20aeddca88281a4441c5d80d9f7
---
libavcodec/Makefile | 1 -
libavcodec/h264.c | 2 +-
libavcodec/h264dspenc.c | 78 --------------
libavcodec/h264enc.c | 260 -----------------------------------------------
4 files changed, 1 insertions(+), 340 deletions(-)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 90f07d6..de1bde0 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -167,7 +167,6 @@ OBJS-$(CONFIG_H264_DECODER) += h264.o \
h264_refs.o h264_cavlc.o h264_cabac.o\
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H264_DXVA2_HWACCEL) += dxva2_h264.o
-OBJS-$(CONFIG_H264_ENCODER) += h264enc.o h264dspenc.o
OBJS-$(CONFIG_H264_VAAPI_HWACCEL) += vaapi_h264.o
OBJS-$(CONFIG_HUFFYUV_DECODER) += huffyuv.o
OBJS-$(CONFIG_HUFFYUV_ENCODER) += huffyuv.o
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 40dc276..52a161b 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -1,5 +1,5 @@
/*
- * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
+ * H.26L/H.264/AVC/JVT/14496-10/... decoder
* Copyright (c) 2003 Michael Niedermayer <michaelni at gmx.at>
*
* This file is part of FFmpeg.
diff --git a/libavcodec/h264dspenc.c b/libavcodec/h264dspenc.c
deleted file mode 100644
index b65a2cc..0000000
--- a/libavcodec/h264dspenc.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * H.264/MPEG-4 Part 10 (Base profile) encoder.
- *
- * DSP functions
- *
- * Copyright (c) 2006 Expertisecentrum Digitale Media, UHasselt
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * H.264 encoder related DSP utils
- *
- */
-
-#include "dsputil.h"
-
-#define H264_DCT_PART1(X) \
- a = block[0][X]+block[3][X]; \
- c = block[0][X]-block[3][X]; \
- b = block[1][X]+block[2][X]; \
- d = block[1][X]-block[2][X]; \
- pieces[0][X] = a+b; \
- pieces[2][X] = a-b; \
- pieces[1][X] = (c<<1)+d; \
- pieces[3][X] = c-(d<<1);
-
-#define H264_DCT_PART2(X) \
- a = pieces[X][0]+pieces[X][3]; \
- c = pieces[X][0]-pieces[X][3]; \
- b = pieces[X][1]+pieces[X][2]; \
- d = pieces[X][1]-pieces[X][2]; \
- block[0][X] = a+b; \
- block[2][X] = a-b; \
- block[1][X] = (c<<1)+d; \
- block[3][X] = c-(d<<1);
-
-/**
- * Transform the provided matrix using the H.264 modified DCT.
- * @note
- * we'll always work with transposed input blocks, to avoid having to make a
- * distinction between C and mmx implementations.
- *
- * @param block transposed input block
- */
-static void h264_dct_c(DCTELEM block[4][4])
-{
- DCTELEM pieces[4][4];
- DCTELEM a, b, c, d;
-
- H264_DCT_PART1(0);
- H264_DCT_PART1(1);
- H264_DCT_PART1(2);
- H264_DCT_PART1(3);
- H264_DCT_PART2(0);
- H264_DCT_PART2(1);
- H264_DCT_PART2(2);
- H264_DCT_PART2(3);
-}
-
-av_cold void ff_h264dspenc_init(DSPContext* c, AVCodecContext *avctx)
-{
- c->h264_dct = h264_dct_c;
-}
-
diff --git a/libavcodec/h264enc.c b/libavcodec/h264enc.c
deleted file mode 100644
index ad874f3..0000000
--- a/libavcodec/h264enc.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
- * H.264 encoder
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-
-#include "libavutil/common.h"
-#include "get_bits.h"
-#include "mpegvideo.h"
-#include "h264data.h"
-
-/**
- * Write out the provided data into a NAL unit.
- * @param nal_ref_idc NAL reference IDC
- * @param nal_unit_type NAL unit payload type
- * @param dest the target buffer, dst+1 == src is allowed as a special case
- * @param destsize the length of the dst array
- * @param b2 the data which should be escaped
- * @return pointer to current position in the output buffer or NULL if an error occurred
- */
-static uint8_t *h264_write_nal_unit(int nal_ref_idc, int nal_unit_type, uint8_t *dest, int *destsize,
- PutBitContext *b2)
-{
- PutBitContext b;
- int i, destpos, rbsplen, escape_count;
- uint8_t *rbsp;
-
- if (nal_unit_type != NAL_END_STREAM)
- put_bits(b2,1,1); // rbsp_stop_bit
-
- // Align b2 on a byte boundary
- align_put_bits(b2);
- rbsplen = put_bits_count(b2)/8;
- flush_put_bits(b2);
- rbsp = b2->buf;
-
- init_put_bits(&b,dest,*destsize);
-
- put_bits(&b,16,0);
- put_bits(&b,16,0x01);
-
- put_bits(&b,1,0); // forbidden zero bit
- put_bits(&b,2,nal_ref_idc); // nal_ref_idc
- put_bits(&b,5,nal_unit_type); // nal_unit_type
-
- flush_put_bits(&b);
-
- destpos = 5;
- escape_count= 0;
-
- for (i=0; i<rbsplen; i+=2)
- {
- if (rbsp[i]) continue;
- if (i>0 && rbsp[i-1]==0)
- i--;
- if (i+2<rbsplen && rbsp[i+1]==0 && rbsp[i+2]<=3)
- {
- escape_count++;
- i+=2;
- }
- }
-
- if(escape_count==0)
- {
- if(dest+destpos != rbsp)
- {
- memcpy(dest+destpos, rbsp, rbsplen);
- *destsize -= (rbsplen+destpos);
- }
- return dest+rbsplen+destpos;
- }
-
- if(rbsplen + escape_count + 1> *destsize)
- {
- av_log(NULL, AV_LOG_ERROR, "Destination buffer too small!\n");
- return NULL;
- }
-
- // this should be damn rare (hopefully)
- for (i = 0 ; i < rbsplen ; i++)
- {
- if (i + 2 < rbsplen && (rbsp[i] == 0 && rbsp[i+1] == 0 && rbsp[i+2] < 4))
- {
- dest[destpos++] = rbsp[i++];
- dest[destpos++] = rbsp[i];
- dest[destpos++] = 0x03; // emulation prevention byte
- }
- else
- dest[destpos++] = rbsp[i];
- }
- *destsize -= destpos;
- return dest+destpos;
-}
-
-static const uint8_t pict_type_to_golomb[7] = {-1, 2, 0, 1, -1, 4, 3};
-
-static const uint8_t intra4x4_cbp_to_golomb[48] = {
- 3, 29, 30, 17, 31, 18, 37, 8, 32, 38, 19, 9, 20, 10, 11, 2,
- 16, 33, 34, 21, 35, 22, 39, 4, 36, 40, 23, 5, 24, 6, 7, 1,
- 41, 42, 43, 25, 44, 26, 46, 12, 45, 47, 27, 13, 28, 14, 15, 0
-};
-
-static const uint8_t inter_cbp_to_golomb[48] = {
- 0, 2, 3, 7, 4, 8, 17, 13, 5, 18, 9, 14, 10, 15, 16, 11,
- 1, 32, 33, 36, 34, 37, 44, 40, 35, 45, 38, 41, 39, 42, 43, 19,
- 6, 24, 25, 20, 26, 21, 46, 28, 27, 47, 22, 29, 23, 30, 31, 12
-};
-
-#define QUANT_SHIFT 22
-
-static const int quant_coeff[52][16] = {
- { 419430, 258111, 419430, 258111, 258111, 167772, 258111, 167772, 419430, 258111, 419430, 258111, 258111, 167772, 258111, 167772,},
- { 381300, 239675, 381300, 239675, 239675, 149131, 239675, 149131, 381300, 239675, 381300, 239675, 239675, 149131, 239675, 149131,},
- { 322639, 209715, 322639, 209715, 209715, 134218, 209715, 134218, 322639, 209715, 322639, 209715, 209715, 134218, 209715, 134218,},
- { 299593, 186414, 299593, 186414, 186414, 116711, 186414, 116711, 299593, 186414, 299593, 186414, 186414, 116711, 186414, 116711,},
- { 262144, 167772, 262144, 167772, 167772, 107374, 167772, 107374, 262144, 167772, 262144, 167772, 167772, 107374, 167772, 107374,},
- { 233017, 145889, 233017, 145889, 145889, 92564, 145889, 92564, 233017, 145889, 233017, 145889, 145889, 92564, 145889, 92564,},
- { 209715, 129056, 209715, 129056, 129056, 83886, 129056, 83886, 209715, 129056, 209715, 129056, 129056, 83886, 129056, 83886,},
- { 190650, 119837, 190650, 119837, 119837, 74565, 119837, 74565, 190650, 119837, 190650, 119837, 119837, 74565, 119837, 74565,},
- { 161319, 104858, 161319, 104858, 104858, 67109, 104858, 67109, 161319, 104858, 161319, 104858, 104858, 67109, 104858, 67109,},
- { 149797, 93207, 149797, 93207, 93207, 58356, 93207, 58356, 149797, 93207, 149797, 93207, 93207, 58356, 93207, 58356,},
- { 131072, 83886, 131072, 83886, 83886, 53687, 83886, 53687, 131072, 83886, 131072, 83886, 83886, 53687, 83886, 53687,},
- { 116508, 72944, 116508, 72944, 72944, 46282, 72944, 46282, 116508, 72944, 116508, 72944, 72944, 46282, 72944, 46282,},
- { 104858, 64528, 104858, 64528, 64528, 41943, 64528, 41943, 104858, 64528, 104858, 64528, 64528, 41943, 64528, 41943,},
- { 95325, 59919, 95325, 59919, 59919, 37283, 59919, 37283, 95325, 59919, 95325, 59919, 59919, 37283, 59919, 37283,},
- { 80660, 52429, 80660, 52429, 52429, 33554, 52429, 33554, 80660, 52429, 80660, 52429, 52429, 33554, 52429, 33554,},
- { 74898, 46603, 74898, 46603, 46603, 29178, 46603, 29178, 74898, 46603, 74898, 46603, 46603, 29178, 46603, 29178,},
- { 65536, 41943, 65536, 41943, 41943, 26844, 41943, 26844, 65536, 41943, 65536, 41943, 41943, 26844, 41943, 26844,},
- { 58254, 36472, 58254, 36472, 36472, 23141, 36472, 23141, 58254, 36472, 58254, 36472, 36472, 23141, 36472, 23141,},
- { 52429, 32264, 52429, 32264, 32264, 20972, 32264, 20972, 52429, 32264, 52429, 32264, 32264, 20972, 32264, 20972,},
- { 47663, 29959, 47663, 29959, 29959, 18641, 29959, 18641, 47663, 29959, 47663, 29959, 29959, 18641, 29959, 18641,},
- { 40330, 26214, 40330, 26214, 26214, 16777, 26214, 16777, 40330, 26214, 40330, 26214, 26214, 16777, 26214, 16777,},
- { 37449, 23302, 37449, 23302, 23302, 14589, 23302, 14589, 37449, 23302, 37449, 23302, 23302, 14589, 23302, 14589,},
- { 32768, 20972, 32768, 20972, 20972, 13422, 20972, 13422, 32768, 20972, 32768, 20972, 20972, 13422, 20972, 13422,},
- { 29127, 18236, 29127, 18236, 18236, 11570, 18236, 11570, 29127, 18236, 29127, 18236, 18236, 11570, 18236, 11570,},
- { 26214, 16132, 26214, 16132, 16132, 10486, 16132, 10486, 26214, 16132, 26214, 16132, 16132, 10486, 16132, 10486,},
- { 23831, 14980, 23831, 14980, 14980, 9321, 14980, 9321, 23831, 14980, 23831, 14980, 14980, 9321, 14980, 9321,},
- { 20165, 13107, 20165, 13107, 13107, 8389, 13107, 8389, 20165, 13107, 20165, 13107, 13107, 8389, 13107, 8389,},
- { 18725, 11651, 18725, 11651, 11651, 7294, 11651, 7294, 18725, 11651, 18725, 11651, 11651, 7294, 11651, 7294,},
- { 16384, 10486, 16384, 10486, 10486, 6711, 10486, 6711, 16384, 10486, 16384, 10486, 10486, 6711, 10486, 6711,},
- { 14564, 9118, 14564, 9118, 9118, 5785, 9118, 5785, 14564, 9118, 14564, 9118, 9118, 5785, 9118, 5785,},
- { 13107, 8066, 13107, 8066, 8066, 5243, 8066, 5243, 13107, 8066, 13107, 8066, 8066, 5243, 8066, 5243,},
- { 11916, 7490, 11916, 7490, 7490, 4660, 7490, 4660, 11916, 7490, 11916, 7490, 7490, 4660, 7490, 4660,},
- { 10082, 6554, 10082, 6554, 6554, 4194, 6554, 4194, 10082, 6554, 10082, 6554, 6554, 4194, 6554, 4194,},
- { 9362, 5825, 9362, 5825, 5825, 3647, 5825, 3647, 9362, 5825, 9362, 5825, 5825, 3647, 5825, 3647,},
- { 8192, 5243, 8192, 5243, 5243, 3355, 5243, 3355, 8192, 5243, 8192, 5243, 5243, 3355, 5243, 3355,},
- { 7282, 4559, 7282, 4559, 4559, 2893, 4559, 2893, 7282, 4559, 7282, 4559, 4559, 2893, 4559, 2893,},
- { 6554, 4033, 6554, 4033, 4033, 2621, 4033, 2621, 6554, 4033, 6554, 4033, 4033, 2621, 4033, 2621,},
- { 5958, 3745, 5958, 3745, 3745, 2330, 3745, 2330, 5958, 3745, 5958, 3745, 3745, 2330, 3745, 2330,},
- { 5041, 3277, 5041, 3277, 3277, 2097, 3277, 2097, 5041, 3277, 5041, 3277, 3277, 2097, 3277, 2097,},
- { 4681, 2913, 4681, 2913, 2913, 1824, 2913, 1824, 4681, 2913, 4681, 2913, 2913, 1824, 2913, 1824,},
- { 4096, 2621, 4096, 2621, 2621, 1678, 2621, 1678, 4096, 2621, 4096, 2621, 2621, 1678, 2621, 1678,},
- { 3641, 2280, 3641, 2280, 2280, 1446, 2280, 1446, 3641, 2280, 3641, 2280, 2280, 1446, 2280, 1446,},
- { 3277, 2016, 3277, 2016, 2016, 1311, 2016, 1311, 3277, 2016, 3277, 2016, 2016, 1311, 2016, 1311,},
- { 2979, 1872, 2979, 1872, 1872, 1165, 1872, 1165, 2979, 1872, 2979, 1872, 1872, 1165, 1872, 1165,},
- { 2521, 1638, 2521, 1638, 1638, 1049, 1638, 1049, 2521, 1638, 2521, 1638, 1638, 1049, 1638, 1049,},
- { 2341, 1456, 2341, 1456, 1456, 912, 1456, 912, 2341, 1456, 2341, 1456, 1456, 912, 1456, 912,},
- { 2048, 1311, 2048, 1311, 1311, 839, 1311, 839, 2048, 1311, 2048, 1311, 1311, 839, 1311, 839,},
- { 1820, 1140, 1820, 1140, 1140, 723, 1140, 723, 1820, 1140, 1820, 1140, 1140, 723, 1140, 723,},
- { 1638, 1008, 1638, 1008, 1008, 655, 1008, 655, 1638, 1008, 1638, 1008, 1008, 655, 1008, 655,},
- { 1489, 936, 1489, 936, 936, 583, 936, 583, 1489, 936, 1489, 936, 936, 583, 936, 583,},
- { 1260, 819, 1260, 819, 819, 524, 819, 524, 1260, 819, 1260, 819, 819, 524, 819, 524,},
- { 1170, 728, 1170, 728, 728, 456, 728, 456, 1170, 728, 1170, 728, 728, 456, 728, 456,},
-};
-
-//FIXME need to check that this does not overflow signed 32 bit for low qp, I am not sure, it's very close
-//FIXME check that gcc inlines this (and optimizes intra & separate_dc stuff away)
-static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale,
- int intra, int separate_dc)
-{
- int i;
- const int * const quant_table = quant_coeff[qscale];
- const int bias = intra ? (1 << QUANT_SHIFT) / 3 : (1 << QUANT_SHIFT) / 6;
- const unsigned int threshold1 = (1 << QUANT_SHIFT) - bias - 1;
- const unsigned int threshold2 = (threshold1 << 1);
- int last_non_zero;
-
- if (separate_dc) {
- if (qscale <= 18) {
- //avoid overflows
- const int dc_bias = intra ? (1 << (QUANT_SHIFT - 2)) / 3 : (1 << (QUANT_SHIFT - 2)) / 6;
- const unsigned int dc_threshold1 = (1 << (QUANT_SHIFT - 2)) - dc_bias - 1;
- const unsigned int dc_threshold2 = (dc_threshold1 << 1);
-
- int level = block[0]*quant_coeff[qscale+18][0];
- if (((unsigned)(level + dc_threshold1)) > dc_threshold2) {
- if (level > 0) {
- level = (dc_bias + level) >> (QUANT_SHIFT - 2);
- block[0] = level;
- } else {
- level = (dc_bias - level) >> (QUANT_SHIFT - 2);
- block[0] = -level;
- }
-// last_non_zero = i;
- } else {
- block[0] = 0;
- }
- } else {
- const int dc_bias = intra ? (1 << (QUANT_SHIFT + 1)) / 3 : (1 << (QUANT_SHIFT + 1)) / 6;
- const unsigned int dc_threshold1 = (1 << (QUANT_SHIFT + 1)) - dc_bias - 1;
- const unsigned int dc_threshold2 = (dc_threshold1 << 1);
-
- int level = block[0]*quant_table[0];
- if (((unsigned)(level + dc_threshold1)) > dc_threshold2) {
- if (level > 0) {
- level = (dc_bias + level) >> (QUANT_SHIFT + 1);
- block[0] = level;
- } else {
- level = (dc_bias - level) >> (QUANT_SHIFT + 1);
- block[0] = -level;
- }
-// last_non_zero = i;
- } else {
- block[0] = 0;
- }
- }
- last_non_zero = 0;
- i = 1;
- } else {
- last_non_zero = -1;
- i = 0;
- }
-
- for (; i < 16; i++) {
- const int j = scantable[i];
- int level = block[j]*quant_table[j];
-
-// if ( bias+level >= (1 << (QMAT_SHIFT - 3))
-// || bias-level >= (1 << (QMAT_SHIFT - 3))) {
- if (((unsigned)(level + threshold1)) > threshold2) {
- if (level > 0) {
- level = (bias + level) >> QUANT_SHIFT;
- block[j] = level;
- } else {
- level = (bias - level) >> QUANT_SHIFT;
- block[j] = -level;
- }
- last_non_zero = i;
- } else {
- block[j] = 0;
- }
- }
-
- return last_non_zero;
-}
More information about the ffmpeg-cvslog
mailing list