diff options
Diffstat (limited to 'libavcodec/rv10.c')
| -rw-r--r-- | libavcodec/rv10.c | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c index 9239cf7..e10cbbf 100644 --- a/libavcodec/rv10.c +++ b/libavcodec/rv10.c @@ -3,20 +3,20 @@ * Copyright (c) 2000,2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -304,6 +304,23 @@ static int rv20_decode_picture_header(RVDecContext *rv) int seq, mb_pos, i; int rpr_bits; +#if 0 + GetBitContext gb= s->gb; + for(i=0; i<64; i++){ + av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&gb)); + if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); + } + av_log(s->avctx, AV_LOG_DEBUG, "\n"); +#endif +#if 0 + av_log(s->avctx, AV_LOG_DEBUG, "%3dx%03d/%02Xx%02X ", s->width, s->height, s->width/4, s->height/4); + for(i=0; i<s->avctx->extradata_size; i++){ + av_log(s->avctx, AV_LOG_DEBUG, "%02X ", ((uint8_t*)s->avctx->extradata)[i]); + if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); + } + av_log(s->avctx, AV_LOG_DEBUG, "\n"); +#endif + i= get_bits(&s->gb, 2); switch(i){ case 0: s->pict_type= AV_PICTURE_TYPE_I; break; @@ -315,6 +332,10 @@ static int rv20_decode_picture_header(RVDecContext *rv) return -1; } + if(s->low_delay && s->pict_type==AV_PICTURE_TYPE_B){ + av_log(s->avctx, AV_LOG_ERROR, "low delay B\n"); + return -1; + } if(s->last_picture_ptr==NULL && s->pict_type==AV_PICTURE_TYPE_B){ av_log(s->avctx, AV_LOG_ERROR, "early B pix\n"); return -1; @@ -332,7 +353,7 @@ static int rv20_decode_picture_header(RVDecContext *rv) } if(RV_GET_MINOR_VER(rv->sub_id) >= 2) - s->loop_filter = get_bits1(&s->gb); + s->loop_filter = get_bits1(&s->gb) && !s->avctx->lowres; if(RV_GET_MINOR_VER(rv->sub_id) <= 1) seq = get_bits(&s->gb, 8) << 7; @@ -354,10 +375,19 @@ static int rv20_decode_picture_header(RVDecContext *rv) new_h= s->orig_height; } if(new_w != s->width || new_h != s->height){ + AVRational old_aspect = s->avctx->sample_aspect_ratio; av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h); if (av_image_check_size(new_w, new_h, 0, s->avctx) < 0) return -1; ff_MPV_common_end(s); + + // attempt to keep aspect during typical resolution switches + if (!old_aspect.num) + old_aspect = (AVRational){1, 1}; + if (2 * new_w * s->height == new_h * s->width) + s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){2, 1}); + if (new_w * s->height == 2 * new_h * s->width) + s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){1, 2}); avcodec_set_dimensions(s->avctx, new_w, new_h); s->width = new_w; s->height = new_h; @@ -368,7 +398,8 @@ static int rv20_decode_picture_header(RVDecContext *rv) if(s->avctx->debug & FF_DEBUG_PICT_INFO){ av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, rpr_bits); } - } else if (av_image_check_size(s->width, s->height, 0, s->avctx) < 0) + } + if (av_image_check_size(s->width, s->height, 0, s->avctx) < 0) return AVERROR_INVALIDDATA; mb_pos = ff_h263_decode_mba(s); @@ -404,14 +435,15 @@ static int rv20_decode_picture_header(RVDecContext *rv) // s->obmc=1; // s->umvplus=1; s->modified_quant=1; - s->loop_filter=1; + if(!s->avctx->lowres) + s->loop_filter=1; if(s->avctx->debug & FF_DEBUG_PICT_INFO){ av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n", seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding); } - assert(s->pict_type != AV_PICTURE_TYPE_B || !s->low_delay); + av_assert0(s->pict_type != AV_PICTURE_TYPE_B || !s->low_delay); return s->mb_width*s->mb_height - mb_pos; } @@ -433,7 +465,6 @@ static av_cold int rv10_decode_init(AVCodecContext *avctx) s->avctx= avctx; s->out_format = FMT_H263; s->codec_id= avctx->codec_id; - avctx->flags |= CODEC_FLAG_EMU_EDGE; s->orig_width = s->width = avctx->coded_width; s->orig_height= s->height = avctx->coded_height; @@ -542,6 +573,7 @@ static int rv10_decode_packet(AVCodecContext *avctx, } } + av_dlog(avctx, "qscale=%d\n", s->qscale); /* default quantization values */ @@ -650,6 +682,8 @@ static int rv10_decode_frame(AVCodecContext *avctx, const uint8_t *slices_hdr = NULL; av_dlog(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size); + s->flags = avctx->flags; + s->flags2 = avctx->flags2; /* no supplementary picture */ if (buf_size == 0) { @@ -721,6 +755,7 @@ AVCodec ff_rv10_decoder = { .close = rv10_decode_end, .decode = rv10_decode_frame, .capabilities = CODEC_CAP_DR1, + .max_lowres = 3, .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"), .pix_fmts = ff_pixfmt_list_420, }; @@ -735,6 +770,7 @@ AVCodec ff_rv20_decoder = { .decode = rv10_decode_frame, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY, .flush = ff_mpeg_flush, + .max_lowres = 3, .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"), .pix_fmts = ff_pixfmt_list_420, }; |
