diff options
Diffstat (limited to 'libavcodec/mpegaudiodec.c')
| -rw-r--r-- | libavcodec/mpegaudiodec.c | 37 |
1 files changed, 23 insertions, 14 deletions
diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c index 6c1e8af845..553398acb7 100644 --- a/libavcodec/mpegaudiodec.c +++ b/libavcodec/mpegaudiodec.c @@ -2,20 +2,20 @@ * MPEG Audio decoder * Copyright (c) 2001, 2002 Fabrice Bellard * - * 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 */ @@ -957,7 +957,7 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g, s_index -= 4; skip_bits_long(&s->gb, last_pos - pos); av_log(s->avctx, AV_LOG_INFO, "overread, skip %d enddists: %d %d\n", last_pos - pos, end_pos-pos, end_pos2-pos); - if(s->err_recognition & AV_EF_BITSTREAM) + if(s->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT)) s_index=0; break; } @@ -987,10 +987,10 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g, /* skip extension bits */ bits_left = end_pos2 - get_bits_count(&s->gb); //av_log(NULL, AV_LOG_ERROR, "left:%d buf:%p\n", bits_left, s->in_gb.buffer); - if (bits_left < 0 && (s->err_recognition & AV_EF_BUFFER)) { + if (bits_left < 0 && (s->err_recognition & (AV_EF_BUFFER|AV_EF_COMPLIANT))) { av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left); s_index=0; - } else if (bits_left > 0 && (s->err_recognition & AV_EF_BUFFER)) { + } else if (bits_left > 0 && (s->err_recognition & (AV_EF_BUFFER|AV_EF_AGGRESSIVE))) { av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left); s_index = 0; } @@ -1384,8 +1384,7 @@ static int mp_decode_layer3(MPADecodeContext *s) if (!s->adu_mode) { int skip; const uint8_t *ptr = s->gb.buffer + (get_bits_count(&s->gb)>>3); - int extrasize = av_clip(get_bits_left(&s->gb) >> 3, 0, - FFMAX(0, LAST_BUF_SIZE - s->last_buf_size)); + int extrasize = av_clip(get_bits_left(&s->gb) >> 3, 0, EXTRABYTES); assert((get_bits_count(&s->gb) & 7) == 0); /* now we get bits from the main_data_begin offset */ av_dlog(s->avctx, "seekback: %d\n", main_data_begin); @@ -1395,7 +1394,7 @@ static int mp_decode_layer3(MPADecodeContext *s) s->in_gb = s->gb; init_get_bits(&s->gb, s->last_buf, s->last_buf_size*8); #if !UNCHECKED_BITSTREAM_READER - s->gb.size_in_bits_plus8 += extrasize * 8; + s->gb.size_in_bits_plus8 += FFMAX(extrasize, LAST_BUF_SIZE - s->last_buf_size) * 8; #endif s->last_buf_size <<= 3; for (gr = 0; gr < nb_granules && (s->last_buf_size >> 3) < main_data_begin; gr++) { @@ -1639,10 +1638,19 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame_ptr, uint32_t header; int out_size; + while(buf_size && !*buf){ + buf++; + buf_size--; + } + if (buf_size < HEADER_SIZE) return AVERROR_INVALIDDATA; header = AV_RB32(buf); + if (header>>8 == AV_RB32("TAG")>>8) { + av_log(avctx, AV_LOG_DEBUG, "discarding ID3 tag\n"); + return buf_size; + } if (ff_mpa_check_header(header) < 0) { av_log(avctx, AV_LOG_ERROR, "Header missing\n"); return AVERROR_INVALIDDATA; @@ -1662,8 +1670,8 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame_ptr, if (s->frame_size <= 0 || s->frame_size > buf_size) { av_log(avctx, AV_LOG_ERROR, "incomplete frame\n"); return AVERROR_INVALIDDATA; - } else if (s->frame_size < buf_size) { - av_log(avctx, AV_LOG_ERROR, "incorrect frame size\n"); + }else if(s->frame_size < buf_size){ + av_log(avctx, AV_LOG_DEBUG, "incorrect frame size - multiple frames in buffer?\n"); buf_size= s->frame_size; } @@ -1702,7 +1710,8 @@ static int decode_frame_adu(AVCodecContext *avctx, void *data, int buf_size = avpkt->size; MPADecodeContext *s = avctx->priv_data; uint32_t header; - int len, out_size; + int len; + int av_unused out_size; len = buf_size; @@ -1903,7 +1912,7 @@ static int decode_frame_mp3on4(AVCodecContext *avctx, void *data, int fr, j, n, ch, ret; /* get output buffer */ - s->frame->nb_samples = MPA_FRAME_SIZE; + s->frame->nb_samples = s->frames * MPA_FRAME_SIZE; if ((ret = avctx->get_buffer(avctx, s->frame)) < 0) { av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return ret; |