* RV30 decoder
* Copyright (c) 2007 Konstantin Shishkov
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file rv30.c
+ * @file
* RV30 decoder
*/
#include "avcodec.h"
-#include "dsputil.h"
#include "mpegvideo.h"
#include "golomb.h"
static int rv30_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
{
+ AVCodecContext *avctx = r->s.avctx;
int mb_bits;
int w = r->s.width, h = r->s.height;
int mb_size;
skip_bits1(gb);
si->pts = get_bits(gb, 13);
rpr = get_bits(gb, r->rpr);
- if(!rpr){
- si->width = w;
- si->height = h;
- }else{
- si->width = r->s.avctx->extradata[6 + rpr*2] << 2;
- si->height = r->s.avctx->extradata[7 + rpr*2] << 2;
+ if(rpr){
+ if (avctx->extradata_size < rpr * 2 + 8) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Insufficient extradata - need at least %d bytes, got %d\n",
+ 8 + rpr * 2, avctx->extradata_size);
+ return AVERROR(EINVAL);
+ }
+
+ w = r->s.avctx->extradata[6 + rpr*2] << 2;
+ h = r->s.avctx->extradata[7 + rpr*2] << 2;
}
+ si->width = w;
+ si->height = h;
mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
mb_bits = ff_rv34_get_start_offset(gb, mb_size);
si->start = get_bits(gb, mb_bits);
{
int i, j, k;
- for(i = 0; i < 4; i++, dst += r->s.b4_stride - 4){
+ for(i = 0; i < 4; i++, dst += r->intra_types_stride - 4){
for(j = 0; j < 4; j+= 2){
- int code = svq3_get_ue_golomb(gb) << 1;
+ unsigned code = svq3_get_ue_golomb(gb) << 1;
if(code >= 81*2){
av_log(r->s.avctx, AV_LOG_ERROR, "Incorrect intra prediction code\n");
return -1;
}
for(k = 0; k < 2; k++){
- int A = dst[-r->s.b4_stride] + 1;
+ int A = dst[-r->intra_types_stride] + 1;
int B = dst[-1] + 1;
*dst++ = rv30_itype_from_context[A * 90 + B * 9 + rv30_itype_code[code + k]];
if(dst[-1] == 9){
static const int rv30_b_types[6] = { RV34_MB_SKIP, RV34_MB_B_DIRECT, RV34_MB_B_FORWARD, RV34_MB_B_BACKWARD, RV34_MB_TYPE_INTRA, RV34_MB_TYPE_INTRA16x16 };
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
- int code = svq3_get_ue_golomb(gb);
+ unsigned code = svq3_get_ue_golomb(gb);
- if(code > 11){
+ if (code > 11) {
av_log(s->avctx, AV_LOG_ERROR, "Incorrect MB type code\n");
return -1;
}
av_log(s->avctx, AV_LOG_ERROR, "dquant needed\n");
code -= 6;
}
- if(s->pict_type != FF_B_TYPE)
+ if(s->pict_type != AV_PICTURE_TYPE_B)
return rv30_p_types[code];
else
return rv30_b_types[code];
static inline void rv30_weak_loop_filter(uint8_t *src, const int step,
const int stride, const int lim)
{
- uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+ const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
int i, diff;
for(i = 0; i < 4; i++){
if(mb_x)
left_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - 1]];
for(j = 0; j < 16; j += 4){
- Y = s->current_picture_ptr->data[0] + mb_x*16 + (row*16 + j) * s->linesize + 4 * !mb_x;
+ Y = s->current_picture_ptr->f.data[0] + mb_x*16 + (row*16 + j) * s->linesize + 4 * !mb_x;
for(i = !mb_x; i < 4; i++, Y += 4){
int ij = i + j;
loc_lim = 0;
if(mb_x)
left_cbp = (r->cbp_chroma[mb_pos - 1] >> (k*4)) & 0xF;
for(j = 0; j < 8; j += 4){
- C = s->current_picture_ptr->data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize + 4 * !mb_x;
+ C = s->current_picture_ptr->f.data[k + 1] + mb_x*8 + (row*8 + j) * s->uvlinesize + 4 * !mb_x;
for(i = !mb_x; i < 2; i++, C += 4){
int ij = i + (j >> 1);
loc_lim = 0;
- if(cur_cbp && (1 << ij))
+ if (cur_cbp & (1 << ij))
loc_lim = cur_lim;
else if(!i && left_cbp & (1 << (ij + 1)))
loc_lim = left_lim;
if(row)
top_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - s->mb_stride]];
for(j = 4*!row; j < 16; j += 4){
- Y = s->current_picture_ptr->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
+ Y = s->current_picture_ptr->f.data[0] + mb_x*16 + (row*16 + j) * s->linesize;
for(i = 0; i < 4; i++, Y += 4){
int ij = i + j;
loc_lim = 0;
if(row)
top_cbp = (r->cbp_chroma[mb_pos - s->mb_stride] >> (k*4)) & 0xF;
for(j = 4*!row; j < 8; j += 4){
- C = s->current_picture_ptr->data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize;
+ C = s->current_picture_ptr->f.data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize;
for(i = 0; i < 2; i++, C += 4){
int ij = i + (j >> 1);
loc_lim = 0;
- if(r->cbp_chroma[mb_pos] && (1 << ij))
+ if (r->cbp_chroma[mb_pos] & (1 << ij))
loc_lim = cur_lim;
else if(!j && top_cbp & (1 << (ij + 2)))
loc_lim = top_lim;
static av_cold int rv30_decode_init(AVCodecContext *avctx)
{
RV34DecContext *r = avctx->priv_data;
+ int ret;
r->rv30 = 1;
- ff_rv34_decode_init(avctx);
+ if ((ret = ff_rv34_decode_init(avctx)) < 0)
+ return ret;
if(avctx->extradata_size < 2){
av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n");
return -1;
}
r->rpr = (avctx->extradata[1] & 7) >> 1;
r->rpr = FFMIN(r->rpr + 1, 3);
- if(avctx->extradata_size - 8 < (r->rpr - 1) * 2){
- av_log(avctx, AV_LOG_ERROR, "Insufficient extradata - need at least %d bytes, got %d\n",
- 6 + r->rpr * 2, avctx->extradata_size);
- }
+
r->parse_slice_header = rv30_parse_slice_header;
r->decode_intra_types = rv30_decode_intra_types;
r->decode_mb_info = rv30_decode_mb_info;
return 0;
}
-AVCodec rv30_decoder = {
- "rv30",
- CODEC_TYPE_VIDEO,
- CODEC_ID_RV30,
- sizeof(RV34DecContext),
- rv30_decode_init,
- NULL,
- ff_rv34_decode_end,
- ff_rv34_decode_frame,
- CODEC_CAP_DR1 | CODEC_CAP_DELAY,
- .long_name = NULL_IF_CONFIG_SMALL("RealVideo 3.0"),
+AVCodec ff_rv30_decoder = {
+ .name = "rv30",
+ .long_name = NULL_IF_CONFIG_SMALL("RealVideo 3.0"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_RV30,
+ .priv_data_size = sizeof(RV34DecContext),
+ .init = rv30_decode_init,
+ .close = ff_rv34_decode_end,
+ .decode = ff_rv34_decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY |
+ CODEC_CAP_FRAME_THREADS,
+ .flush = ff_mpeg_flush,
+ .pix_fmts = ff_pixfmt_list_420,
+ .init_thread_copy = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_init_thread_copy),
+ .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),
};
projects / ffmpeg / blobdiff