virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

split ljpeg encoder out of mjpeg.c

Browse Source 
Originally committed as revision 9057 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2007-05-18 22:42:49 +00:00
parent 56fd7cc584
commit d9c9259f89
6 changed files with 261 additions and 182 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/Makefile
View File

@ -99,7 +99,7 @@ OBJS-$(CONFIG_INTERPLAY_VIDEO_DECODER) += interplayvideo.o
OBJS-$(CONFIG_INTERPLAY_DPCM_DECODER) += dpcm.o
OBJS-$(CONFIG_JPEGLS_ENCODER) += jpeglsenc.o jpegls.o
OBJS-$(CONFIG_KMVC_DECODER) += kmvc.o
OBJS-$(CONFIG_LJPEG_ENCODER) += mjpegenc.o mjpeg.o mpegvideo.o
OBJS-$(CONFIG_LJPEG_ENCODER) += ljpegenc.o mjpegenc.o mjpeg.o mpegvideo.o
OBJS-$(CONFIG_LOCO_DECODER) += loco.o
OBJS-$(CONFIG_MACE3_DECODER) += mace.o
OBJS-$(CONFIG_MACE6_DECODER) += mace.o

197
libavcodec/ljpegenc.c Normal file
View File

@ -0,0 +1,197 @@
/*
* lossless JPEG encoder
* Copyright (c) 2000, 2001 Fabrice Bellard.
* Copyright (c) 2003 Alex Beregszaszi
* Copyright (c) 2003-2004 Michael Niedermayer
*
* 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
*
* Support for external huffman table, various fixes (AVID workaround),
* aspecting, new decode_frame mechanism and apple mjpeg-b support
* by Alex Beregszaszi
*/
/**
* @file ljpegenc.c
* lossless JPEG encoder.
*/
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "mjpeg.h"
#include "mjpegenc.h"
static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
MpegEncContext * const s = avctx->priv_data;
MJpegContext * const m = s->mjpeg_ctx;
AVFrame *pict = data;
const int width= s->width;
const int height= s->height;
AVFrame * const p= (AVFrame*)&s->current_picture;
const int predictor= avctx->prediction_method+1;
init_put_bits(&s->pb, buf, buf_size);
*p = *pict;
p->pict_type= FF_I_TYPE;
p->key_frame= 1;
mjpeg_picture_header(s);
s->header_bits= put_bits_count(&s->pb);
if(avctx->pix_fmt == PIX_FMT_RGB32){
int x, y, i;
const int linesize= p->linesize[0];
uint16_t (*buffer)[4]= (void *) s->rd_scratchpad;
int left[3], top[3], topleft[3];
for(i=0; i<3; i++){
buffer[0][i]= 1 << (9 - 1);
}
for(y = 0; y < height; y++) {
const int modified_predictor= y ? predictor : 1;
uint8_t *ptr = p->data[0] + (linesize * y);
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < width*3*4){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
for(i=0; i<3; i++){
top[i]= left[i]= topleft[i]= buffer[0][i];
}
for(x = 0; x < width; x++) {
buffer[x][1] = ptr[4*x+0] - ptr[4*x+1] + 0x100;
buffer[x][2] = ptr[4*x+2] - ptr[4*x+1] + 0x100;
buffer[x][0] = (ptr[4*x+0] + 2*ptr[4*x+1] + ptr[4*x+2])>>2;
for(i=0;i<3;i++) {
int pred, diff;
PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
topleft[i]= top[i];
top[i]= buffer[x+1][i];
left[i]= buffer[x][i];
diff= ((left[i] - pred + 0x100)&0x1FF) - 0x100;
if(i==0)
mjpeg_encode_dc(s, diff, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
mjpeg_encode_dc(s, diff, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
}
}
}
}else{
int mb_x, mb_y, i;
const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0];
const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0];
for(mb_y = 0; mb_y < mb_height; mb_y++) {
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < mb_width * 4 * 3 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
for(mb_x = 0; mb_x < mb_width; mb_x++) {
if(mb_x==0 || mb_y==0){
for(i=0;i<3;i++) {
uint8_t *ptr;
int x, y, h, v, linesize;
h = s->mjpeg_hsample[i];
v = s->mjpeg_vsample[i];
linesize= p->linesize[i];
for(y=0; y<v; y++){
for(x=0; x<h; x++){
int pred;
ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
if(y==0 && mb_y==0){
if(x==0 && mb_x==0){
pred= 128;
}else{
pred= ptr[-1];
}
}else{
if(x==0 && mb_x==0){
pred= ptr[-linesize];
}else{
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
}
}
if(i==0)
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
}
}
}
}else{
for(i=0;i<3;i++) {
uint8_t *ptr;
int x, y, h, v, linesize;
h = s->mjpeg_hsample[i];
v = s->mjpeg_vsample[i];
linesize= p->linesize[i];
for(y=0; y<v; y++){
for(x=0; x<h; x++){
int pred;
ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
//printf("%d %d %d %d %8X\n", mb_x, mb_y, x, y, ptr);
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
if(i==0)
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
}
}
}
}
}
}
}
emms_c();
mjpeg_picture_trailer(s);
s->picture_number++;
flush_put_bits(&s->pb);
return pbBufPtr(&s->pb) - s->pb.buf;
// return (put_bits_count(&f->pb)+7)/8;
}
AVCodec ljpeg_encoder = { //FIXME avoid MPV_* lossless jpeg shouldnt need them
"ljpeg",
CODEC_TYPE_VIDEO,
CODEC_ID_LJPEG,
sizeof(MpegEncContext),
MPV_encode_init,
encode_picture_lossless,
MPV_encode_end,
};

174
libavcodec/mjpegenc.c
View File

@ -37,23 +37,12 @@
#include "dsputil.h"
#include "mpegvideo.h"
#include "mjpeg.h"
#include "mjpegenc.h"
/* use two quantizer tables (one for luminance and one for chrominance) */
/* not yet working */
#undef TWOMATRIXES
typedef struct MJpegContext {
uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
uint16_t huff_code_dc_luminance[12];
uint8_t huff_size_dc_chrominance[12];
uint16_t huff_code_dc_chrominance[12];
uint8_t huff_size_ac_luminance[256];
uint16_t huff_code_ac_luminance[256];
uint8_t huff_size_ac_chrominance[256];
uint16_t huff_code_ac_chrominance[256];
} MJpegContext;
int mjpeg_init(MpegEncContext *s)
{
@ -365,7 +354,7 @@ void mjpeg_picture_trailer(MpegEncContext *s)
put_marker(&s->pb, EOI);
}
static inline void mjpeg_encode_dc(MpegEncContext *s, int val,
void mjpeg_encode_dc(MpegEncContext *s, int val,
uint8_t *huff_size, uint16_t *huff_code)
{
int mant, nbits;
@ -460,162 +449,3 @@ void mjpeg_encode_mb(MpegEncContext *s,
encode_block(s, block[7], 7);
}
}
static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
MpegEncContext * const s = avctx->priv_data;
MJpegContext * const m = s->mjpeg_ctx;
AVFrame *pict = data;
const int width= s->width;
const int height= s->height;
AVFrame * const p= (AVFrame*)&s->current_picture;
const int predictor= avctx->prediction_method+1;
init_put_bits(&s->pb, buf, buf_size);
*p = *pict;
p->pict_type= FF_I_TYPE;
p->key_frame= 1;
mjpeg_picture_header(s);
s->header_bits= put_bits_count(&s->pb);
if(avctx->pix_fmt == PIX_FMT_RGB32){
int x, y, i;
const int linesize= p->linesize[0];
uint16_t (*buffer)[4]= (void *) s->rd_scratchpad;
int left[3], top[3], topleft[3];
for(i=0; i<3; i++){
buffer[0][i]= 1 << (9 - 1);
}
for(y = 0; y < height; y++) {
const int modified_predictor= y ? predictor : 1;
uint8_t *ptr = p->data[0] + (linesize * y);
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < width*3*4){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
for(i=0; i<3; i++){
top[i]= left[i]= topleft[i]= buffer[0][i];
}
for(x = 0; x < width; x++) {
buffer[x][1] = ptr[4*x+0] - ptr[4*x+1] + 0x100;
buffer[x][2] = ptr[4*x+2] - ptr[4*x+1] + 0x100;
buffer[x][0] = (ptr[4*x+0] + 2*ptr[4*x+1] + ptr[4*x+2])>>2;
for(i=0;i<3;i++) {
int pred, diff;
PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
topleft[i]= top[i];
top[i]= buffer[x+1][i];
left[i]= buffer[x][i];
diff= ((left[i] - pred + 0x100)&0x1FF) - 0x100;
if(i==0)
mjpeg_encode_dc(s, diff, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
mjpeg_encode_dc(s, diff, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
}
}
}
}else{
int mb_x, mb_y, i;
const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0];
const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0];
for(mb_y = 0; mb_y < mb_height; mb_y++) {
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < mb_width * 4 * 3 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
for(mb_x = 0; mb_x < mb_width; mb_x++) {
if(mb_x==0 || mb_y==0){
for(i=0;i<3;i++) {
uint8_t *ptr;
int x, y, h, v, linesize;
h = s->mjpeg_hsample[i];
v = s->mjpeg_vsample[i];
linesize= p->linesize[i];
for(y=0; y<v; y++){
for(x=0; x<h; x++){
int pred;
ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
if(y==0 && mb_y==0){
if(x==0 && mb_x==0){
pred= 128;
}else{
pred= ptr[-1];
}
}else{
if(x==0 && mb_x==0){
pred= ptr[-linesize];
}else{
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
}
}
if(i==0)
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
}
}
}
}else{
for(i=0;i<3;i++) {
uint8_t *ptr;
int x, y, h, v, linesize;
h = s->mjpeg_hsample[i];
v = s->mjpeg_vsample[i];
linesize= p->linesize[i];
for(y=0; y<v; y++){
for(x=0; x<h; x++){
int pred;
ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
//printf("%d %d %d %d %8X\n", mb_x, mb_y, x, y, ptr);
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
if(i==0)
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
}
}
}
}
}
}
}
emms_c();
mjpeg_picture_trailer(s);
s->picture_number++;
flush_put_bits(&s->pb);
return pbBufPtr(&s->pb) - s->pb.buf;
// return (put_bits_count(&f->pb)+7)/8;
}
AVCodec ljpeg_encoder = { //FIXME avoid MPV_* lossless jpeg shouldnt need them
"ljpeg",
CODEC_TYPE_VIDEO,
CODEC_ID_LJPEG,
sizeof(MpegEncContext),
MPV_encode_init,
encode_picture_lossless,
MPV_encode_end,
};

60
libavcodec/mjpegenc.h Normal file
View File

@ -0,0 +1,60 @@
/*
* MJPEG encoder
* Copyright (c) 2000, 2001 Fabrice Bellard.
* Copyright (c) 2003 Alex Beregszaszi
* Copyright (c) 2003-2004 Michael Niedermayer
*
* 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
*
* Support for external huffman table, various fixes (AVID workaround),
* aspecting, new decode_frame mechanism and apple mjpeg-b support
* by Alex Beregszaszi
*/
/**
* @file mjpegenc.h
* MJPEG encoder.
*/
#ifndef MJPEGENC_H
#define MJPEGENC_H
#include "dsputil.h"
#include "mpegvideo.h"
typedef struct MJpegContext {
uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
uint16_t huff_code_dc_luminance[12];
uint8_t huff_size_dc_chrominance[12];
uint16_t huff_code_dc_chrominance[12];
uint8_t huff_size_ac_luminance[256];
uint16_t huff_code_ac_luminance[256];
uint8_t huff_size_ac_chrominance[256];
uint16_t huff_code_ac_chrominance[256];
} MJpegContext;
int mjpeg_init(MpegEncContext *s);
void mjpeg_close(MpegEncContext *s);
void mjpeg_picture_header(MpegEncContext *s);
void mjpeg_picture_trailer(MpegEncContext *s);
void ff_mjpeg_stuffing(PutBitContext *pbc);
void mjpeg_encode_dc(MpegEncContext *s, int val,
uint8_t *huff_size, uint16_t *huff_code);
void mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64]);
#endif /* MJPEGENC_H */

1
libavcodec/mpegvideo.c
View File

@ -30,6 +30,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "faandct.h"
#include <limits.h>

9
libavcodec/mpegvideo.h
View File

@ -905,14 +905,5 @@ void ff_wmv2_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y);
/* mjpeg.c */
int mjpeg_init(MpegEncContext *s);
void mjpeg_close(MpegEncContext *s);
void mjpeg_encode_mb(MpegEncContext *s,
DCTELEM block[6][64]);
void mjpeg_picture_header(MpegEncContext *s);
void mjpeg_picture_trailer(MpegEncContext *s);
void ff_mjpeg_stuffing(PutBitContext * pbc);
#endif /* AVCODEC_MPEGVIDEO_H */