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Diffstat (limited to 'ffmpeg1/libavcodec/ljpegenc.c')
-rw-r--r--ffmpeg1/libavcodec/ljpegenc.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/ffmpeg1/libavcodec/ljpegenc.c b/ffmpeg1/libavcodec/ljpegenc.c
deleted file mode 100644
index 76c3cb9..0000000
--- a/ffmpeg1/libavcodec/ljpegenc.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * lossless JPEG encoder
- * Copyright (c) 2000, 2001 Fabrice Bellard
- * Copyright (c) 2003 Alex Beregszaszi
- * Copyright (c) 2003-2004 Michael Niedermayer
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- * by Alex Beregszaszi
- *
- * 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
- */
-
-/**
- * @file
- * lossless JPEG encoder.
- */
-
-#include "avcodec.h"
-#include "internal.h"
-#include "mpegvideo.h"
-#include "mjpeg.h"
-#include "mjpegenc.h"
-
-
-static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *pict, int *got_packet)
-{
- MpegEncContext * const s = avctx->priv_data;
- MJpegContext * const m = s->mjpeg_ctx;
- const int width= s->width;
- const int height= s->height;
- AVFrame * const p = &s->current_picture.f;
- const int predictor= avctx->prediction_method+1;
- 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];
- int ret, max_pkt_size = FF_MIN_BUFFER_SIZE;
-
- if (avctx->pix_fmt == AV_PIX_FMT_BGRA)
- max_pkt_size += width * height * 3 * 4;
- else {
- max_pkt_size += mb_width * mb_height * 3 * 4
- * s->mjpeg_hsample[0] * s->mjpeg_vsample[0];
- }
-
- if (!s->edge_emu_buffer &&
- (ret = ff_mpv_frame_size_alloc(s, pict->linesize[0])) < 0) {
- av_log(avctx, AV_LOG_ERROR, "failed to allocate context scratch buffers.\n");
- return ret;
- }
-
- if ((ret = ff_alloc_packet2(avctx, pkt, max_pkt_size)) < 0)
- return ret;
-
- init_put_bits(&s->pb, pkt->data, pkt->size);
-
- av_frame_unref(p);
- ret = av_frame_ref(p, pict);
- if (ret < 0)
- return ret;
- p->pict_type= AV_PICTURE_TYPE_I;
- p->key_frame= 1;
-
- ff_mjpeg_encode_picture_header(s);
-
- s->header_bits= put_bits_count(&s->pb);
-
- if(avctx->pix_fmt == AV_PIX_FMT_BGR0
- || avctx->pix_fmt == AV_PIX_FMT_BGRA
- || avctx->pix_fmt == AV_PIX_FMT_BGR24){
- 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++) {
- if(avctx->pix_fmt == AV_PIX_FMT_BGR24){
- buffer[x][1] = ptr[3*x+0] - ptr[3*x+1] + 0x100;
- buffer[x][2] = ptr[3*x+2] - ptr[3*x+1] + 0x100;
- buffer[x][0] = (ptr[3*x+0] + 2*ptr[3*x+1] + ptr[3*x+2])>>2;
- }else{
- 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)
- ff_mjpeg_encode_dc(s, diff, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
- else
- ff_mjpeg_encode_dc(s, diff, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
- }
- }
- }
- }else{
- int mb_x, mb_y, i;
-
- 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)
- ff_mjpeg_encode_dc(s, *ptr - pred, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
- else
- ff_mjpeg_encode_dc(s, *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
- PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
-
- if(i==0)
- ff_mjpeg_encode_dc(s, *ptr - pred, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
- else
- ff_mjpeg_encode_dc(s, *ptr - pred, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
- }
- }
- }
- }
- }
- }
- }
-
- emms_c();
- av_assert0(s->esc_pos == s->header_bits >> 3);
- ff_mjpeg_encode_stuffing(s);
- ff_mjpeg_encode_picture_trailer(s);
- s->picture_number++;
-
- flush_put_bits(&s->pb);
- pkt->size = put_bits_ptr(&s->pb) - s->pb.buf;
- pkt->flags |= AV_PKT_FLAG_KEY;
- *got_packet = 1;
-
- return 0;
-// return (put_bits_count(&f->pb)+7)/8;
-}
-
-
-AVCodec ff_ljpeg_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
- .name = "ljpeg",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_LJPEG,
- .priv_data_size = sizeof(MpegEncContext),
- .init = ff_MPV_encode_init,
- .encode2 = encode_picture_lossless,
- .close = ff_MPV_encode_end,
- .pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_BGR24, AV_PIX_FMT_BGRA, AV_PIX_FMT_BGR0,
- AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
- AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
- AV_PIX_FMT_NONE},
- .long_name = NULL_IF_CONFIG_SMALL("Lossless JPEG"),
-};
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