diff options
Diffstat (limited to 'libavformat/ape.c')
-rw-r--r-- | libavformat/ape.c | 52 |
1 files changed, 30 insertions, 22 deletions
diff --git a/libavformat/ape.c b/libavformat/ape.c index 09a756d..28f73d3 100644 --- a/libavformat/ape.c +++ b/libavformat/ape.c @@ -3,20 +3,20 @@ * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org> * based upon libdemac from Dave Chapman. * - * 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 */ @@ -38,8 +38,6 @@ #define MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS 16 // has the number of seek elements after the peak level #define MAC_FORMAT_FLAG_CREATE_WAV_HEADER 32 // create the wave header on decompression (not stored) -#define MAC_SUBFRAME_SIZE 4608 - #define APE_EXTRADATA_SIZE 6 typedef struct APEFrame { @@ -88,10 +86,14 @@ typedef struct APEContext { static int ape_probe(AVProbeData * p) { - if (p->buf[0] == 'M' && p->buf[1] == 'A' && p->buf[2] == 'C' && p->buf[3] == ' ') - return AVPROBE_SCORE_MAX; + int version = AV_RL16(p->buf+4); + if (AV_RL32(p->buf) != MKTAG('M', 'A', 'C', ' ')) + return 0; - return 0; + if (version < APE_MIN_VERSION || version > APE_MAX_VERSION) + return AVPROBE_SCORE_MAX/4; + + return AVPROBE_SCORE_MAX; } static void ape_dumpinfo(AVFormatContext * s, APEContext * ape_ctx) @@ -172,14 +174,14 @@ static int ape_read_header(AVFormatContext * s) tag = avio_rl32(pb); if (tag != MKTAG('M', 'A', 'C', ' ')) - return -1; + return AVERROR_INVALIDDATA; ape->fileversion = avio_rl16(pb); if (ape->fileversion < APE_MIN_VERSION || ape->fileversion > APE_MAX_VERSION) { av_log(s, AV_LOG_ERROR, "Unsupported file version - %d.%02d\n", ape->fileversion / 1000, (ape->fileversion % 1000) / 10); - return -1; + return AVERROR_PATCHWELCOME; } if (ape->fileversion >= 3980) { @@ -258,11 +260,11 @@ static int ape_read_header(AVFormatContext * s) if(ape->totalframes > UINT_MAX / sizeof(APEFrame)){ av_log(s, AV_LOG_ERROR, "Too many frames: %"PRIu32"\n", ape->totalframes); - return -1; + return AVERROR_INVALIDDATA; } if (ape->seektablelength / sizeof(*ape->seektable) < ape->totalframes) { av_log(s, AV_LOG_ERROR, - "Number of seek entries is less than number of frames: %zu vs. %"PRIu32"\n", + "Number of seek entries is less than number of frames: %"SIZE_SPECIFIER" vs. %"PRIu32"\n", ape->seektablelength / sizeof(*ape->seektable), ape->totalframes); return AVERROR_INVALIDDATA; } @@ -280,18 +282,20 @@ static int ape_read_header(AVFormatContext * s) ape->totalsamples += ape->blocksperframe * (ape->totalframes - 1); if (ape->seektablelength > 0) { - ape->seektable = av_malloc(ape->seektablelength); + ape->seektable = av_mallocz(ape->seektablelength); if (!ape->seektable) return AVERROR(ENOMEM); for (i = 0; i < ape->seektablelength / sizeof(uint32_t) && !pb->eof_reached; i++) ape->seektable[i] = avio_rl32(pb); if (ape->fileversion < 3810) { - ape->bittable = av_malloc(ape->totalframes); + ape->bittable = av_mallocz(ape->totalframes); if (!ape->bittable) return AVERROR(ENOMEM); for (i = 0; i < ape->totalframes && !pb->eof_reached; i++) ape->bittable[i] = avio_r8(pb); } + if (pb->eof_reached) + av_log(s, AV_LOG_WARNING, "File truncated\n"); } ape->frames[0].pos = ape->firstframe; @@ -340,7 +344,7 @@ static int ape_read_header(AVFormatContext * s) /* now we are ready: build format streams */ st = avformat_new_stream(s, NULL); if (!st) - return -1; + return AVERROR(ENOMEM); total_blocks = (ape->totalframes == 0) ? 0 : ((ape->totalframes - 1) * ape->blocksperframe) + ape->finalframeblocks; @@ -353,11 +357,11 @@ static int ape_read_header(AVFormatContext * s) st->nb_frames = ape->totalframes; st->start_time = 0; - st->duration = total_blocks / MAC_SUBFRAME_SIZE; - avpriv_set_pts_info(st, 64, MAC_SUBFRAME_SIZE, ape->samplerate); + st->duration = total_blocks; + avpriv_set_pts_info(st, 64, 1, ape->samplerate); - st->codec->extradata = av_malloc(APE_EXTRADATA_SIZE); - st->codec->extradata_size = APE_EXTRADATA_SIZE; + if (ff_alloc_extradata(st->codec, APE_EXTRADATA_SIZE)) + return AVERROR(ENOMEM); AV_WL16(st->codec->extradata + 0, ape->fileversion); AV_WL16(st->codec->extradata + 2, ape->compressiontype); AV_WL16(st->codec->extradata + 4, ape->formatflags); @@ -366,7 +370,7 @@ static int ape_read_header(AVFormatContext * s) for (i = 0; i < ape->totalframes; i++) { ape->frames[i].pts = pts; av_add_index_entry(st, ape->frames[i].pos, ape->frames[i].pts, 0, 0, AVINDEX_KEYFRAME); - pts += ape->blocksperframe / MAC_SUBFRAME_SIZE; + pts += ape->blocksperframe; } /* try to read APE tags */ @@ -385,7 +389,7 @@ static int ape_read_packet(AVFormatContext * s, AVPacket * pkt) APEContext *ape = s->priv_data; uint32_t extra_size = 8; - if (s->pb->eof_reached) + if (avio_feof(s->pb)) return AVERROR_EOF; if (ape->currentframe >= ape->totalframes) return AVERROR_EOF; @@ -413,6 +417,10 @@ static int ape_read_packet(AVFormatContext * s, AVPacket * pkt) AV_WL32(pkt->data , nblocks); AV_WL32(pkt->data + 4, ape->frames[ape->currentframe].skip); ret = avio_read(s->pb, pkt->data + extra_size, ape->frames[ape->currentframe].size); + if (ret < 0) { + av_free_packet(pkt); + return ret; + } pkt->pts = ape->frames[ape->currentframe].pts; pkt->stream_index = 0; |