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Diffstat (limited to 'contrib/ffmpeg/libavcodec/roqvideodec.c')
-rw-r--r--contrib/ffmpeg/libavcodec/roqvideodec.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/contrib/ffmpeg/libavcodec/roqvideodec.c b/contrib/ffmpeg/libavcodec/roqvideodec.c
deleted file mode 100644
index a4e32c3fa..000000000
--- a/contrib/ffmpeg/libavcodec/roqvideodec.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * Copyright (C) 2003 the ffmpeg project
- *
- * 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 roqvideodec.c
- * Id RoQ Video Decoder by Dr. Tim Ferguson
- * For more information about the Id RoQ format, visit:
- * http://www.csse.monash.edu.au/~timf/
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "avcodec.h"
-#include "bytestream.h"
-#include "dsputil.h"
-#include "roqvideo.h"
-
-static void roqvideo_decode_frame(RoqContext *ri)
-{
- unsigned int chunk_id = 0, chunk_arg = 0;
- unsigned long chunk_size = 0;
- int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
- int vqid, bpos, xpos, ypos, xp, yp, x, y, mx, my;
- int frame_stats[2][4] = {{0},{0}};
- roq_qcell *qcell;
- const unsigned char *buf = ri->buf;
- const unsigned char *buf_end = ri->buf + ri->size;
-
- while (buf < buf_end) {
- chunk_id = bytestream_get_le16(&buf);
- chunk_size = bytestream_get_le32(&buf);
- chunk_arg = bytestream_get_le16(&buf);
-
- if(chunk_id == RoQ_QUAD_VQ)
- break;
- if(chunk_id == RoQ_QUAD_CODEBOOK) {
- if((nv1 = chunk_arg >> 8) == 0)
- nv1 = 256;
- if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
- nv2 = 256;
- for(i = 0; i < nv1; i++) {
- ri->cb2x2[i].y[0] = *buf++;
- ri->cb2x2[i].y[1] = *buf++;
- ri->cb2x2[i].y[2] = *buf++;
- ri->cb2x2[i].y[3] = *buf++;
- ri->cb2x2[i].u = *buf++;
- ri->cb2x2[i].v = *buf++;
- }
- for(i = 0; i < nv2; i++)
- for(j = 0; j < 4; j++)
- ri->cb4x4[i].idx[j] = *buf++;
- }
- }
-
- bpos = xpos = ypos = 0;
- while(bpos < chunk_size) {
- for (yp = ypos; yp < ypos + 16; yp += 8)
- for (xp = xpos; xp < xpos + 16; xp += 8) {
- if (vqflg_pos < 0) {
- vqflg = buf[bpos++]; vqflg |= (buf[bpos++] << 8);
- vqflg_pos = 7;
- }
- vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
- frame_stats[0][vqid]++;
- vqflg_pos--;
-
- switch(vqid) {
- case RoQ_ID_MOT:
- break;
- case RoQ_ID_FCC:
- mx = 8 - (buf[bpos] >> 4) - ((signed char) (chunk_arg >> 8));
- my = 8 - (buf[bpos++] & 0xf) - ((signed char) chunk_arg);
- ff_apply_motion_8x8(ri, xp, yp, mx, my);
- break;
- case RoQ_ID_SLD:
- qcell = ri->cb4x4 + buf[bpos++];
- ff_apply_vector_4x4(ri, xp, yp, ri->cb2x2 + qcell->idx[0]);
- ff_apply_vector_4x4(ri, xp+4, yp, ri->cb2x2 + qcell->idx[1]);
- ff_apply_vector_4x4(ri, xp, yp+4, ri->cb2x2 + qcell->idx[2]);
- ff_apply_vector_4x4(ri, xp+4, yp+4, ri->cb2x2 + qcell->idx[3]);
- break;
- case RoQ_ID_CCC:
- for (k = 0; k < 4; k++) {
- x = xp; y = yp;
- if(k & 0x01) x += 4;
- if(k & 0x02) y += 4;
-
- if (vqflg_pos < 0) {
- vqflg = buf[bpos++];
- vqflg |= (buf[bpos++] << 8);
- vqflg_pos = 7;
- }
- vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
- frame_stats[1][vqid]++;
- vqflg_pos--;
- switch(vqid) {
- case RoQ_ID_MOT:
- break;
- case RoQ_ID_FCC:
- mx = 8 - (buf[bpos] >> 4) - ((signed char) (chunk_arg >> 8));
- my = 8 - (buf[bpos++] & 0xf) - ((signed char) chunk_arg);
- ff_apply_motion_4x4(ri, x, y, mx, my);
- break;
- case RoQ_ID_SLD:
- qcell = ri->cb4x4 + buf[bpos++];
- ff_apply_vector_2x2(ri, x, y, ri->cb2x2 + qcell->idx[0]);
- ff_apply_vector_2x2(ri, x+2, y, ri->cb2x2 + qcell->idx[1]);
- ff_apply_vector_2x2(ri, x, y+2, ri->cb2x2 + qcell->idx[2]);
- ff_apply_vector_2x2(ri, x+2, y+2, ri->cb2x2 + qcell->idx[3]);
- break;
- case RoQ_ID_CCC:
- ff_apply_vector_2x2(ri, x, y, ri->cb2x2 + buf[bpos]);
- ff_apply_vector_2x2(ri, x+2, y, ri->cb2x2 + buf[bpos+1]);
- ff_apply_vector_2x2(ri, x, y+2, ri->cb2x2 + buf[bpos+2]);
- ff_apply_vector_2x2(ri, x+2, y+2, ri->cb2x2 + buf[bpos+3]);
- bpos += 4;
- break;
- }
- }
- break;
- default:
- av_log(ri->avctx, AV_LOG_ERROR, "Unknown vq code: %d\n", vqid);
- }
- }
-
- xpos += 16;
- if (xpos >= ri->width) {
- xpos -= ri->width;
- ypos += 16;
- }
- if(ypos >= ri->height)
- break;
- }
-}
-
-
-static int roq_decode_init(AVCodecContext *avctx)
-{
- RoqContext *s = avctx->priv_data;
-
- s->avctx = avctx;
- s->width = avctx->width;
- s->height = avctx->height;
- s->last_frame = &s->frames[0];
- s->current_frame = &s->frames[1];
- avctx->pix_fmt = PIX_FMT_YUV444P;
- dsputil_init(&s->dsp, avctx);
-
- return 0;
-}
-
-static int roq_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- const uint8_t *buf, int buf_size)
-{
- RoqContext *s = avctx->priv_data;
- int copy= !s->current_frame->data[0];
-
- if (avctx->reget_buffer(avctx, s->current_frame)) {
- av_log(avctx, AV_LOG_ERROR, " RoQ: get_buffer() failed\n");
- return -1;
- }
-
- if(copy)
- av_picture_copy((AVPicture*)s->current_frame, (AVPicture*)s->last_frame,
- avctx->pix_fmt, avctx->width, avctx->height);
-
- s->buf = buf;
- s->size = buf_size;
- roqvideo_decode_frame(s);
-
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = *s->current_frame;
-
- /* shuffle frames */
- FFSWAP(AVFrame *, s->current_frame, s->last_frame);
-
- return buf_size;
-}
-
-static int roq_decode_end(AVCodecContext *avctx)
-{
- RoqContext *s = avctx->priv_data;
-
- /* release the last frame */
- if (s->last_frame->data[0])
- avctx->release_buffer(avctx, s->last_frame);
- if (s->current_frame->data[0])
- avctx->release_buffer(avctx, s->current_frame);
-
- return 0;
-}
-
-AVCodec roq_decoder = {
- "roqvideo",
- CODEC_TYPE_VIDEO,
- CODEC_ID_ROQ,
- sizeof(RoqContext),
- roq_decode_init,
- NULL,
- roq_decode_end,
- roq_decode_frame,
- CODEC_CAP_DR1,
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-01 18:07:28 +0000