diff options
Diffstat (limited to 'libavcodec/rv10.c')
-rw-r--r-- | libavcodec/rv10.c | 68 |
1 files changed, 47 insertions, 21 deletions
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c index 944db5841c..4d48a49f3c 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 */ @@ -303,7 +303,7 @@ static int rv20_decode_picture_header(RVDecContext *rv) int rpr_bits; i = get_bits(&s->gb, 2); - switch (i) { + switch(i) { case 0: s->pict_type = AV_PICTURE_TYPE_I; break; case 1: s->pict_type = AV_PICTURE_TYPE_I; break; //hmm ... case 2: s->pict_type = AV_PICTURE_TYPE_P; break; @@ -313,6 +313,10 @@ static int rv20_decode_picture_header(RVDecContext *rv) return AVERROR_INVALIDDATA; } + 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-frame\n"); return AVERROR_INVALIDDATA; @@ -330,7 +334,7 @@ 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; @@ -357,10 +361,21 @@ 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 AVERROR_INVALIDDATA; 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}); + ret = ff_set_dimensions(s->avctx, new_w, new_h); if (ret < 0) return ret; @@ -374,7 +389,8 @@ 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); @@ -393,15 +409,17 @@ static int rv20_decode_picture_header(RVDecContext *rv) } else { s->time = seq; s->pb_time = s->pp_time - (s->last_non_b_time - s->time); - if (s->pp_time <= s->pb_time || - s->pp_time <= s->pp_time - s->pb_time || s->pp_time <= 0) { - av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible " - "from seeking? skipping current b frame\n"); - return FRAME_SKIPPED; - } - ff_mpeg4_init_direct_mv(s); } } + if (s->pict_type == AV_PICTURE_TYPE_B) { + if (s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0) { + av_log(s->avctx, AV_LOG_DEBUG, + "messed up order, possible from seeking? skipping current b frame\n"); +#define ERROR_SKIP_FRAME -123 + return ERROR_SKIP_FRAME; + } + ff_mpeg4_init_direct_mv(s); + } s->no_rounding = get_bits1(&s->gb); @@ -412,14 +430,15 @@ static int rv20_decode_picture_header(RVDecContext *rv) s->unrestricted_mv = 1; s->h263_aic = s->pict_type == AV_PICTURE_TYPE_I; 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; } @@ -444,7 +463,6 @@ 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; @@ -476,7 +494,7 @@ static av_cold int rv10_decode_init(AVCodecContext *avctx) if (avctx->debug & FF_DEBUG_PICT_INFO) { av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", rv->sub_id, - avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1); + ((uint32_t*)avctx->extradata)[0]); } avctx->pix_fmt = AV_PIX_FMT_YUV420P; @@ -523,7 +541,8 @@ static int rv10_decode_packet(AVCodecContext *avctx, else mb_count = rv20_decode_picture_header(rv); if (mb_count < 0) { - av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n"); + if (mb_count != ERROR_SKIP_FRAME) + av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n"); return AVERROR_INVALIDDATA; } @@ -555,6 +574,7 @@ static int rv10_decode_packet(AVCodecContext *avctx, } } + av_dlog(avctx, "qscale=%d\n", s->qscale); /* default quantization values */ @@ -666,6 +686,8 @@ 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) { @@ -719,11 +741,13 @@ static int rv10_decode_frame(AVCodecContext *avctx, if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { if ((ret = av_frame_ref(pict, &s->current_picture_ptr->f)) < 0) return ret; - ff_print_debug_info(s, s->current_picture_ptr); + ff_print_debug_info(s, s->current_picture_ptr, pict); + ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1); } else if (s->last_picture_ptr != NULL) { if ((ret = av_frame_ref(pict, &s->last_picture_ptr->f)) < 0) return ret; - ff_print_debug_info(s, s->last_picture_ptr); + ff_print_debug_info(s, s->last_picture_ptr, pict); + ff_mpv_export_qp_table(s, pict,s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1); } if (s->last_picture_ptr || s->low_delay) { @@ -747,6 +771,7 @@ AVCodec ff_rv10_decoder = { .close = rv10_decode_end, .decode = rv10_decode_frame, .capabilities = CODEC_CAP_DR1, + .max_lowres = 3, .pix_fmts = ff_pixfmt_list_420, }; @@ -761,5 +786,6 @@ AVCodec ff_rv20_decoder = { .decode = rv10_decode_frame, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY, .flush = ff_mpeg_flush, + .max_lowres = 3, .pix_fmts = ff_pixfmt_list_420, }; |