/*
- * Copyright (C) 2003 the ffmpeg project
+ * Copyright (C) 2003 Mike Melanson
+ * Copyright (C) 2003 Dr. Tim Ferguson
*
* This file is part of FFmpeg.
*
* 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 roqvideo.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/
+ * @file libavcodec/roqvideo.c
+ * id RoQ Video common functions based on work by Dr. Tim Ferguson
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "common.h"
#include "avcodec.h"
-#include "dsputil.h"
-
-typedef struct {
- unsigned char y0, y1, y2, y3, u, v;
-} roq_cell;
-
-typedef struct {
- int idx[4];
-} roq_qcell;
-
-static int uiclip[1024], *uiclp; /* clipping table */
-#define avg2(a,b) uiclp[(((int)(a)+(int)(b)+1)>>1)]
-#define avg4(a,b,c,d) uiclp[(((int)(a)+(int)(b)+(int)(c)+(int)(d)+2)>>2)]
-
-typedef struct RoqContext {
-
- AVCodecContext *avctx;
- DSPContext dsp;
- AVFrame last_frame;
- AVFrame current_frame;
- int first_frame;
- int y_stride;
- int c_stride;
-
- roq_cell cells[256];
- roq_qcell qcells[256];
-
- unsigned char *buf;
- int size;
-
-} RoqContext;
+#include "roqvideo.h"
-#define RoQ_INFO 0x1001
-#define RoQ_QUAD_CODEBOOK 0x1002
-#define RoQ_QUAD_VQ 0x1011
-#define RoQ_SOUND_MONO 0x1020
-#define RoQ_SOUND_STEREO 0x1021
-
-#define RoQ_ID_MOT 0x00
-#define RoQ_ID_FCC 0x01
-#define RoQ_ID_SLD 0x02
-#define RoQ_ID_CCC 0x03
-
-#define get_byte(in_buffer) *(in_buffer++)
-#define get_word(in_buffer) ((unsigned short)(in_buffer += 2, \
- (in_buffer[-1] << 8 | in_buffer[-2])))
-#define get_long(in_buffer) ((unsigned long)(in_buffer += 4, \
- (in_buffer[-1] << 24 | in_buffer[-2] << 16 | in_buffer[-3] << 8 | in_buffer[-4])))
-
-
-static void apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
+static inline void block_copy(unsigned char *out, unsigned char *in,
+ int outstride, int instride, int sz)
{
- unsigned char *yptr;
-
- yptr = ri->current_frame.data[0] + (y * ri->y_stride) + x;
- *yptr++ = cell->y0;
- *yptr++ = cell->y1;
- yptr += (ri->y_stride - 2);
- *yptr++ = cell->y2;
- *yptr++ = cell->y3;
- ri->current_frame.data[1][(y/2) * (ri->c_stride) + x/2] = cell->u;
- ri->current_frame.data[2][(y/2) * (ri->c_stride) + x/2] = cell->v;
+ int rows = sz;
+ while(rows--) {
+ memcpy(out, in, sz);
+ out += outstride;
+ in += instride;
+ }
}
-static void apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
+void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
{
- unsigned long row_inc, c_row_inc;
- register unsigned char y0, y1, u, v;
- unsigned char *yptr, *uptr, *vptr;
-
- yptr = ri->current_frame.data[0] + (y * ri->y_stride) + x;
- uptr = ri->current_frame.data[1] + (y/2) * (ri->c_stride) + x/2;
- vptr = ri->current_frame.data[2] + (y/2) * (ri->c_stride) + x/2;
-
- row_inc = ri->y_stride - 4;
- c_row_inc = (ri->c_stride) - 2;
- *yptr++ = y0 = cell->y0; *uptr++ = u = cell->u; *vptr++ = v = cell->v;
- *yptr++ = y0;
- *yptr++ = y1 = cell->y1; *uptr++ = u; *vptr++ = v;
- *yptr++ = y1;
-
- yptr += row_inc;
-
- *yptr++ = y0;
- *yptr++ = y0;
- *yptr++ = y1;
- *yptr++ = y1;
-
- yptr += row_inc; uptr += c_row_inc; vptr += c_row_inc;
-
- *yptr++ = y0 = cell->y2; *uptr++ = u; *vptr++ = v;
- *yptr++ = y0;
- *yptr++ = y1 = cell->y3; *uptr++ = u; *vptr++ = v;
- *yptr++ = y1;
-
- yptr += row_inc;
-
- *yptr++ = y0;
- *yptr++ = y0;
- *yptr++ = y1;
- *yptr++ = y1;
+ unsigned char *bptr;
+ int boffs,stride;
+
+ stride = ri->current_frame->linesize[0];
+ boffs = y*stride + x;
+
+ bptr = ri->current_frame->data[0] + boffs;
+ bptr[0 ] = cell->y[0];
+ bptr[1 ] = cell->y[1];
+ bptr[stride ] = cell->y[2];
+ bptr[stride+1] = cell->y[3];
+
+ stride = ri->current_frame->linesize[1];
+ boffs = y*stride + x;
+
+ bptr = ri->current_frame->data[1] + boffs;
+ bptr[0 ] =
+ bptr[1 ] =
+ bptr[stride ] =
+ bptr[stride+1] = cell->u;
+
+ bptr = ri->current_frame->data[2] + boffs;
+ bptr[0 ] =
+ bptr[1 ] =
+ bptr[stride ] =
+ bptr[stride+1] = cell->v;
}
-static void apply_motion_4x4(RoqContext *ri, int x, int y, unsigned char mv,
- signed char mean_x, signed char mean_y)
+void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
{
- int i, hw, mx, my;
- unsigned char *pa, *pb;
-
- mx = x + 8 - (mv >> 4) - mean_x;
- my = y + 8 - (mv & 0xf) - mean_y;
-
- /* check MV against frame boundaries */
- if ((mx < 0) || (mx > ri->avctx->width - 4) ||
- (my < 0) || (my > ri->avctx->height - 4)) {
- av_log(ri->avctx, AV_LOG_ERROR, "motion vector out of bounds: MV = (%d, %d), boundaries = (0, 0, %d, %d)\n",
- mx, my, ri->avctx->width, ri->avctx->height);
- return;
- }
-
- pa = ri->current_frame.data[0] + (y * ri->y_stride) + x;
- pb = ri->last_frame.data[0] + (my * ri->y_stride) + mx;
- for(i = 0; i < 4; i++) {
- pa[0] = pb[0];
- pa[1] = pb[1];
- pa[2] = pb[2];
- pa[3] = pb[3];
- pa += ri->y_stride;
- pb += ri->y_stride;
- }
-
- hw = ri->y_stride/2;
- pa = ri->current_frame.data[1] + (y * ri->y_stride)/4 + x/2;
- pb = ri->last_frame.data[1] + (my/2) * (ri->y_stride/2) + (mx + 1)/2;
-
- for(i = 0; i < 2; i++) {
- switch(((my & 0x01) << 1) | (mx & 0x01)) {
-
- case 0:
- pa[0] = pb[0];
- pa[1] = pb[1];
- pa[hw] = pb[hw];
- pa[hw+1] = pb[hw+1];
- break;
-
- case 1:
- pa[0] = avg2(pb[0], pb[1]);
- pa[1] = avg2(pb[1], pb[2]);
- pa[hw] = avg2(pb[hw], pb[hw+1]);
- pa[hw+1] = avg2(pb[hw+1], pb[hw+2]);
- break;
-
- case 2:
- pa[0] = avg2(pb[0], pb[hw]);
- pa[1] = avg2(pb[1], pb[hw+1]);
- pa[hw] = avg2(pb[hw], pb[hw*2]);
- pa[hw+1] = avg2(pb[hw+1], pb[(hw*2)+1]);
- break;
-
- case 3:
- pa[0] = avg4(pb[0], pb[1], pb[hw], pb[hw+1]);
- pa[1] = avg4(pb[1], pb[2], pb[hw+1], pb[hw+2]);
- pa[hw] = avg4(pb[hw], pb[hw+1], pb[hw*2], pb[(hw*2)+1]);
- pa[hw+1] = avg4(pb[hw+1], pb[hw+2], pb[(hw*2)+1], pb[(hw*2)+1]);
- break;
- }
-
- pa = ri->current_frame.data[2] + (y * ri->y_stride)/4 + x/2;
- pb = ri->last_frame.data[2] + (my/2) * (ri->y_stride/2) + (mx + 1)/2;
- }
+ unsigned char *bptr;
+ int boffs,stride;
+
+ stride = ri->current_frame->linesize[0];
+ boffs = y*stride + x;
+
+ bptr = ri->current_frame->data[0] + boffs;
+ bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] = cell->y[0];
+ bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] = cell->y[1];
+ bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] = cell->y[2];
+ bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->y[3];
+
+ stride = ri->current_frame->linesize[1];
+ boffs = y*stride + x;
+
+ bptr = ri->current_frame->data[1] + boffs;
+ bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] =
+ bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] =
+ bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] =
+ bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->u;
+
+ bptr = ri->current_frame->data[2] + boffs;
+ bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] =
+ bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] =
+ bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] =
+ bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->v;
}
-static void apply_motion_8x8(RoqContext *ri, int x, int y,
- unsigned char mv, signed char mean_x, signed char mean_y)
+
+static inline void apply_motion_generic(RoqContext *ri, int x, int y, int deltax,
+ int deltay, int sz)
{
- int mx, my, i, j, hw;
- unsigned char *pa, *pb;
+ int mx, my, cp;
- mx = x + 8 - (mv >> 4) - mean_x;
- my = y + 8 - (mv & 0xf) - mean_y;
+ mx = x + deltax;
+ my = y + deltay;
/* check MV against frame boundaries */
- if ((mx < 0) || (mx > ri->avctx->width - 8) ||
- (my < 0) || (my > ri->avctx->height - 8)) {
+ if ((mx < 0) || (mx > ri->width - sz) ||
+ (my < 0) || (my > ri->height - sz)) {
av_log(ri->avctx, AV_LOG_ERROR, "motion vector out of bounds: MV = (%d, %d), boundaries = (0, 0, %d, %d)\n",
- mx, my, ri->avctx->width, ri->avctx->height);
+ mx, my, ri->width, ri->height);
return;
}
- pa = ri->current_frame.data[0] + (y * ri->y_stride) + x;
- pb = ri->last_frame.data[0] + (my * ri->y_stride) + mx;
- for(i = 0; i < 8; i++) {
- pa[0] = pb[0];
- pa[1] = pb[1];
- pa[2] = pb[2];
- pa[3] = pb[3];
- pa[4] = pb[4];
- pa[5] = pb[5];
- pa[6] = pb[6];
- pa[7] = pb[7];
- pa += ri->y_stride;
- pb += ri->y_stride;
- }
-
- hw = ri->c_stride;
- pa = ri->current_frame.data[1] + (y * ri->y_stride)/4 + x/2;
- pb = ri->last_frame.data[1] + (my/2) * (ri->y_stride/2) + (mx + 1)/2;
- for(j = 0; j < 2; j++) {
- for(i = 0; i < 4; i++) {
- switch(((my & 0x01) << 1) | (mx & 0x01)) {
-
- case 0:
- pa[0] = pb[0];
- pa[1] = pb[1];
- pa[2] = pb[2];
- pa[3] = pb[3];
- break;
-
- case 1:
- pa[0] = avg2(pb[0], pb[1]);
- pa[1] = avg2(pb[1], pb[2]);
- pa[2] = avg2(pb[2], pb[3]);
- pa[3] = avg2(pb[3], pb[4]);
- break;
-
- case 2:
- pa[0] = avg2(pb[0], pb[hw]);
- pa[1] = avg2(pb[1], pb[hw+1]);
- pa[2] = avg2(pb[2], pb[hw+2]);
- pa[3] = avg2(pb[3], pb[hw+3]);
- break;
-
- case 3:
- pa[0] = avg4(pb[0], pb[1], pb[hw], pb[hw+1]);
- pa[1] = avg4(pb[1], pb[2], pb[hw+1], pb[hw+2]);
- pa[2] = avg4(pb[2], pb[3], pb[hw+2], pb[hw+3]);
- pa[3] = avg4(pb[3], pb[4], pb[hw+3], pb[hw+4]);
- break;
- }
- pa += ri->c_stride;
- pb += ri->c_stride;
- }
-
- pa = ri->current_frame.data[2] + (y * ri->y_stride)/4 + x/2;
- pb = ri->last_frame.data[2] + (my/2) * (ri->y_stride/2) + (mx + 1)/2;
+ for(cp = 0; cp < 3; cp++) {
+ int outstride = ri->current_frame->linesize[cp];
+ int instride = ri->last_frame ->linesize[cp];
+ block_copy(ri->current_frame->data[cp] + y*outstride + x,
+ ri->last_frame->data[cp] + my*instride + mx,
+ outstride, instride, sz);
}
}
-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;
- int frame_stats[2][4] = {{0},{0}};
- roq_qcell *qcell;
- unsigned char *buf = ri->buf;
- unsigned char *buf_end = ri->buf + ri->size;
-
- while (buf < buf_end) {
- chunk_id = get_word(buf);
- chunk_size = get_long(buf);
- chunk_arg = get_word(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->cells[i].y0 = get_byte(buf);
- ri->cells[i].y1 = get_byte(buf);
- ri->cells[i].y2 = get_byte(buf);
- ri->cells[i].y3 = get_byte(buf);
- ri->cells[i].u = get_byte(buf);
- ri->cells[i].v = get_byte(buf);
- }
- for(i = 0; i < nv2; i++)
- for(j = 0; j < 4; j++)
- ri->qcells[i].idx[j] = get_byte(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:
- apply_motion_8x8(ri, xp, yp, 0, 8, 8);
- break;
- case RoQ_ID_FCC:
- apply_motion_8x8(ri, xp, yp, buf[bpos++], chunk_arg >> 8,
- chunk_arg & 0xff);
- break;
- case RoQ_ID_SLD:
- qcell = ri->qcells + buf[bpos++];
- apply_vector_4x4(ri, xp, yp, ri->cells + qcell->idx[0]);
- apply_vector_4x4(ri, xp+4, yp, ri->cells + qcell->idx[1]);
- apply_vector_4x4(ri, xp, yp+4, ri->cells + qcell->idx[2]);
- apply_vector_4x4(ri, xp+4, yp+4, ri->cells + 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:
- apply_motion_4x4(ri, x, y, 0, 8, 8);
- break;
- case RoQ_ID_FCC:
- apply_motion_4x4(ri, x, y, buf[bpos++],
- chunk_arg >> 8, chunk_arg & 0xff);
- break;
- case RoQ_ID_SLD:
- qcell = ri->qcells + buf[bpos++];
- apply_vector_2x2(ri, x, y, ri->cells + qcell->idx[0]);
- apply_vector_2x2(ri, x+2, y, ri->cells + qcell->idx[1]);
- apply_vector_2x2(ri, x, y+2, ri->cells + qcell->idx[2]);
- apply_vector_2x2(ri, x+2, y+2, ri->cells + qcell->idx[3]);
- break;
- case RoQ_ID_CCC:
- apply_vector_2x2(ri, x, y, ri->cells + buf[bpos]);
- apply_vector_2x2(ri, x+2, y, ri->cells + buf[bpos+1]);
- apply_vector_2x2(ri, x, y+2, ri->cells + buf[bpos+2]);
- apply_vector_2x2(ri, x+2, y+2, ri->cells + 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->avctx->width) {
- xpos -= ri->avctx->width;
- ypos += 16;
- }
- if(ypos >= ri->avctx->height)
- break;
- }
-}
-
-
-static int roq_decode_init(AVCodecContext *avctx)
+void ff_apply_motion_4x4(RoqContext *ri, int x, int y,
+ int deltax, int deltay)
{
- RoqContext *s = avctx->priv_data;
- int i;
-
- s->avctx = avctx;
- s->first_frame = 1;
- avctx->pix_fmt = PIX_FMT_YUV420P;
- avctx->has_b_frames = 0;
- dsputil_init(&s->dsp, avctx);
-
- uiclp = uiclip+512;
- for(i = -512; i < 512; i++)
- uiclp[i] = (i < 0 ? 0 : (i > 255 ? 255 : i));
-
- return 0;
-}
-
-static int roq_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- RoqContext *s = avctx->priv_data;
-
- if (avctx->get_buffer(avctx, &s->current_frame)) {
- av_log(avctx, AV_LOG_ERROR, " RoQ: get_buffer() failed\n");
- return -1;
- }
- s->y_stride = s->current_frame.linesize[0];
- s->c_stride = s->current_frame.linesize[1];
-
- s->buf = buf;
- s->size = buf_size;
- roqvideo_decode_frame(s);
-
- /* release the last frame if it is allocated */
- if (s->first_frame)
- s->first_frame = 0;
- else
- avctx->release_buffer(avctx, &s->last_frame);
-
- /* shuffle frames */
- s->last_frame = s->current_frame;
-
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->current_frame;
-
- return buf_size;
+ apply_motion_generic(ri, x, y, deltax, deltay, 4);
}
-static int roq_decode_end(AVCodecContext *avctx)
+void ff_apply_motion_8x8(RoqContext *ri, int x, int y,
+ int deltax, int deltay)
{
- RoqContext *s = avctx->priv_data;
-
- /* release the last frame */
- if (s->last_frame.data[0])
- avctx->release_buffer(avctx, &s->last_frame);
-
- return 0;
+ apply_motion_generic(ri, x, y, deltax, deltay, 8);
}
-
-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,
-};
projects / frescor / ffmpeg.git / blobdiff