diff options
Diffstat (limited to 'libavcodec/wmadec.c')
| -rw-r--r-- | libavcodec/wmadec.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c index 5ee3742..39e50a4 100644 --- a/libavcodec/wmadec.c +++ b/libavcodec/wmadec.c @@ -1,21 +1,21 @@ /* * WMA compatible decoder - * Copyright (c) 2002 The Libav Project + * Copyright (c) 2002 The FFmpeg Project * - * 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 */ @@ -102,6 +102,13 @@ static int wma_decode_init(AVCodecContext * avctx) s->use_bit_reservoir = flags2 & 0x0002; s->use_variable_block_len = flags2 & 0x0004; + if(avctx->codec->id == AV_CODEC_ID_WMAV2 && avctx->extradata_size >= 8){ + if(AV_RL16(extradata+4)==0xd && s->use_variable_block_len){ + av_log(avctx, AV_LOG_WARNING, "Disabling use_variable_block_len, if this fails contact the ffmpeg developers and send us the file\n"); + s->use_variable_block_len= 0; // this fixes issue1503 + } + } + if(ff_wma_init(avctx, flags2)<0) return -1; @@ -484,6 +491,11 @@ static int wma_decode_block(WMACodecContext *s) s->block_len_bits = s->frame_len_bits; } + if (s->frame_len_bits - s->block_len_bits >= s->nb_block_sizes){ + av_log(s->avctx, AV_LOG_ERROR, "block_len_bits not initialized to a valid value\n"); + return -1; + } + /* now check if the block length is coherent with the frame length */ s->block_len = 1 << s->block_len_bits; if ((s->block_pos + s->block_len) > s->frame_len){ @@ -823,7 +835,8 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, buf_size, s->block_align); return AVERROR_INVALIDDATA; } - buf_size = s->block_align; + if(s->block_align) + buf_size = s->block_align; init_get_bits(&s->gb, buf, buf_size*8); @@ -921,7 +934,7 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, *got_frame_ptr = 1; *(AVFrame *)data = s->frame; - return s->block_align; + return buf_size; fail: /* when error, we reset the bit reservoir */ s->last_superframe_len = 0; @@ -936,6 +949,7 @@ static av_cold void flush(AVCodecContext *avctx) s->last_superframe_len= 0; } +#if CONFIG_WMAV1_DECODER AVCodec ff_wmav1_decoder = { .name = "wmav1", .type = AVMEDIA_TYPE_AUDIO, @@ -948,7 +962,8 @@ AVCodec ff_wmav1_decoder = { .capabilities = CODEC_CAP_DR1, .long_name = NULL_IF_CONFIG_SMALL("Windows Media Audio 1"), }; - +#endif +#if CONFIG_WMAV2_DECODER AVCodec ff_wmav2_decoder = { .name = "wmav2", .type = AVMEDIA_TYPE_AUDIO, @@ -961,3 +976,4 @@ AVCodec ff_wmav2_decoder = { .capabilities = CODEC_CAP_DR1, .long_name = NULL_IF_CONFIG_SMALL("Windows Media Audio 2"), }; +#endif |
