diff options
Diffstat (limited to 'libavformat/nsvdec.c')
| -rw-r--r-- | libavformat/nsvdec.c | 94 |
1 files changed, 41 insertions, 53 deletions
diff --git a/libavformat/nsvdec.c b/libavformat/nsvdec.c index c91d2a15dd..ae179991ce 100644 --- a/libavformat/nsvdec.c +++ b/libavformat/nsvdec.c @@ -1,23 +1,23 @@ /* * NSV demuxer - * Copyright (c) 2004 The Libav Project + * Copyright (c) 2004 The FFmpeg Project * * first version by Francois Revol <revol@free.fr> * - * 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 */ @@ -26,6 +26,7 @@ #include "avformat.h" #include "internal.h" #include "libavutil/dict.h" +#include "libavutil/intreadwrite.h" /* max bytes to crawl for trying to resync * stupid streaming servers don't start at chunk boundaries... @@ -69,11 +70,7 @@ * so the header seems to not be mandatory. (for streaming). * * index slice duration check (excepts nsvtrailer.nsv): - * for f in [^n]*.nsv; do - * DUR="$(avconv -i "$f" 2> /dev/null | grep 'NSVf duration' | cut -d ' ' -f 4)" - * IC="$(avconv -i "$f" 2> /dev/null | grep 'INDEX ENTRIES' | cut -d ' ' -f 2)" - * echo "duration $DUR, slite time $(($DUR/$IC))" - * done + * for f in [^n]*.nsv; do DUR="$(ffmpeg -i "$f" 2>/dev/null | grep 'NSVf duration' | cut -d ' ' -f 4)"; IC="$(ffmpeg -i "$f" 2>/dev/null | grep 'INDEX ENTRIES' | cut -d ' ' -f 2)"; echo "duration $DUR, slite time $(($DUR/$IC))"; done */ /* @@ -99,8 +96,8 @@ struct NSVs_header { uint32_t chunk_tag; /* 'NSVs' */ uint32_t v4cc; /* or 'NONE' */ uint32_t a4cc; /* or 'NONE' */ - uint16_t vwidth; /* assert(vwidth%16==0) */ - uint16_t vheight; /* assert(vheight%16==0) */ + uint16_t vwidth; /* av_assert0(vwidth%16==0) */ + uint16_t vheight; /* av_assert0(vheight%16==0) */ uint8_t framerate; /* value = (framerate&0x80)?frtable[frameratex0x7f]:framerate */ uint16_t unknown; }; @@ -191,6 +188,7 @@ static const AVCodecTag nsv_codec_video_tags[] = { { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') }, { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') }, { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') }, + { AV_CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') }, /* { AV_CODEC_ID_VP4, MKTAG('V', 'P', '4', ' ') }, { AV_CODEC_ID_VP4, MKTAG('V', 'P', '4', '0') }, @@ -204,6 +202,7 @@ static const AVCodecTag nsv_codec_audio_tags[] = { { AV_CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') }, { AV_CODEC_ID_AAC, MKTAG('A', 'A', 'C', ' ') }, { AV_CODEC_ID_AAC, MKTAG('A', 'A', 'C', 'P') }, + { AV_CODEC_ID_AAC, MKTAG('V', 'L', 'B', ' ') }, { AV_CODEC_ID_SPEEX, MKTAG('S', 'P', 'X', ' ') }, { AV_CODEC_ID_PCM_U16LE, MKTAG('P', 'C', 'M', ' ') }, { AV_CODEC_ID_NONE, 0 }, @@ -221,7 +220,7 @@ static int nsv_resync(AVFormatContext *s) int i; for (i = 0; i < NSV_MAX_RESYNC; i++) { - if (pb->eof_reached) { + if (avio_feof(pb)) { av_log(s, AV_LOG_TRACE, "NSV EOF\n"); nsv->state = NSV_UNSYNC; return -1; @@ -229,7 +228,7 @@ static int nsv_resync(AVFormatContext *s) v <<= 8; v |= avio_r8(pb); if (i < 8) { - av_log(s, AV_LOG_TRACE, "NSV resync: [%d] = %02"PRIx32"\n", i, v & 0x0FF); + av_log(s, AV_LOG_TRACE, "NSV resync: [%d] = %02x\n", i, v & 0x0FF); } if ((v & 0x0000ffff) == 0xefbe) { /* BEEF */ @@ -285,7 +284,7 @@ static int nsv_parse_NSVf_header(AVFormatContext *s) table_entries_used = avio_rl32(pb); av_log(s, AV_LOG_TRACE, "NSV NSVf info-strings size: %d, table entries: %d, bis %d\n", strings_size, table_entries, table_entries_used); - if (pb->eof_reached) + if (avio_feof(pb)) return -1; av_log(s, AV_LOG_TRACE, "NSV got header; filepos %"PRId64"\n", avio_tell(pb)); @@ -322,7 +321,7 @@ static int nsv_parse_NSVf_header(AVFormatContext *s) } av_free(strings); } - if (pb->eof_reached) + if (avio_feof(pb)) return -1; av_log(s, AV_LOG_TRACE, "NSV got infos; filepos %"PRId64"\n", avio_tell(pb)); @@ -332,7 +331,7 @@ static int nsv_parse_NSVf_header(AVFormatContext *s) nsv->index_entries = table_entries_used; if((unsigned)table_entries_used >= UINT_MAX / sizeof(uint32_t)) return -1; - nsv->nsvs_file_offset = av_malloc((unsigned)table_entries_used * sizeof(uint32_t)); + nsv->nsvs_file_offset = av_malloc_array((unsigned)table_entries_used, sizeof(uint32_t)); if (!nsv->nsvs_file_offset) return AVERROR(ENOMEM); @@ -341,7 +340,7 @@ static int nsv_parse_NSVf_header(AVFormatContext *s) if(table_entries > table_entries_used && avio_rl32(pb) == MKTAG('T','O','C','2')) { - nsv->nsvs_timestamps = av_malloc((unsigned)table_entries_used*sizeof(uint32_t)); + nsv->nsvs_timestamps = av_malloc_array((unsigned)table_entries_used, sizeof(uint32_t)); if (!nsv->nsvs_timestamps) return AVERROR(ENOMEM); for(i=0;i<table_entries_used;i++) { @@ -354,7 +353,7 @@ static int nsv_parse_NSVf_header(AVFormatContext *s) avio_seek(pb, nsv->base_offset + size, SEEK_SET); /* required for dumbdriving-271.nsv (2 extra bytes) */ - if (pb->eof_reached) + if (avio_feof(pb)) return -1; nsv->state = NSV_HAS_READ_NSVF; return 0; @@ -398,8 +397,7 @@ static int nsv_parse_NSVs_header(AVFormatContext *s) nsv->avsync = avio_rl16(pb); nsv->framerate = framerate; - av_log(s, AV_LOG_TRACE, "NSV NSVs vsize %"PRIu16"x%"PRIu16"\n", - vwidth, vheight); + av_log(s, AV_LOG_TRACE, "NSV NSVs vsize %dx%d\n", vwidth, vheight); /* XXX change to ap != NULL ? */ if (s->nb_streams == 0) { /* streams not yet published, let's do that */ @@ -520,12 +518,13 @@ static int nsv_read_chunk(AVFormatContext *s, int fill_header) uint32_t vsize; uint16_t asize; uint16_t auxsize; + int ret; if (nsv->ahead[0].data || nsv->ahead[1].data) return 0; //-1; /* hey! eat what you've in your plate first! */ null_chunk_retry: - if (pb->eof_reached) + if (avio_feof(pb)) return -1; for (i = 0; i < NSV_MAX_RESYNC_TRIES && nsv->state < NSV_FOUND_NSVS && !err; i++) @@ -544,8 +543,7 @@ null_chunk_retry: asize = avio_rl16(pb); vsize = (vsize << 4) | (auxcount >> 4); auxcount &= 0x0f; - av_log(s, AV_LOG_TRACE, "NSV CHUNK %"PRIu8" aux, %"PRIu32" bytes video, %"PRIu16" bytes audio\n", - auxcount, vsize, asize); + av_log(s, AV_LOG_TRACE, "NSV CHUNK %d aux, %u bytes video, %d bytes audio\n", auxcount, vsize, asize); /* skip aux stuff */ for (i = 0; i < auxcount; i++) { uint32_t av_unused auxtag; @@ -555,7 +553,7 @@ null_chunk_retry: vsize -= auxsize + sizeof(uint16_t) + sizeof(uint32_t); /* that's becoming brain-dead */ } - if (pb->eof_reached) + if (avio_feof(pb)) return -1; if (!vsize && !asize) { nsv->state = NSV_UNSYNC; @@ -571,13 +569,13 @@ null_chunk_retry: if (vsize && st[NSV_ST_VIDEO]) { nst = st[NSV_ST_VIDEO]->priv_data; pkt = &nsv->ahead[NSV_ST_VIDEO]; - av_get_packet(pb, pkt, vsize); + if ((ret = av_get_packet(pb, pkt, vsize)) < 0) + return ret; pkt->stream_index = st[NSV_ST_VIDEO]->index;//NSV_ST_VIDEO; pkt->dts = nst->frame_offset; pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0; /* keyframe only likely on a sync frame */ for (i = 0; i < FFMIN(8, vsize); i++) - av_log(s, AV_LOG_TRACE, "NSV video: [%d] = %02"PRIx8"\n", - i, pkt->data[i]); + av_log(s, AV_LOG_TRACE, "NSV video: [%d] = %02x\n", i, pkt->data[i]); } if(st[NSV_ST_VIDEO]) ((NSVStream*)st[NSV_ST_VIDEO]->priv_data)->frame_offset++; @@ -597,12 +595,11 @@ null_chunk_retry: if (!channels || !samplerate) return AVERROR_INVALIDDATA; asize-=4; - av_log(s, AV_LOG_TRACE, "NSV RAWAUDIO: bps %"PRIu8", nchan %"PRIu8", srate %"PRIu16"\n", - bps, channels, samplerate); + av_log(s, AV_LOG_TRACE, "NSV RAWAUDIO: bps %d, nchan %d, srate %d\n", bps, channels, samplerate); if (fill_header) { st[NSV_ST_AUDIO]->need_parsing = AVSTREAM_PARSE_NONE; /* we know everything */ if (bps != 16) { - av_log(s, AV_LOG_TRACE, "NSV AUDIO bit/sample != 16 (%"PRIu8")!!!\n", bps); + av_log(s, AV_LOG_TRACE, "NSV AUDIO bit/sample != 16 (%d)!!!\n", bps); } bps /= channels; // ??? if (bps == 8) @@ -611,11 +608,11 @@ null_chunk_retry: channels = 1; st[NSV_ST_AUDIO]->codecpar->channels = channels; st[NSV_ST_AUDIO]->codecpar->sample_rate = samplerate; - av_log(s, AV_LOG_TRACE, "NSV RAWAUDIO: bps %"PRIu8", nchan %"PRIu8", srate %"PRIu16"\n", - bps, channels, samplerate); + av_log(s, AV_LOG_TRACE, "NSV RAWAUDIO: bps %d, nchan %d, srate %d\n", bps, channels, samplerate); } } - av_get_packet(pb, pkt, asize); + if ((ret = av_get_packet(pb, pkt, asize)) < 0) + return ret; pkt->stream_index = st[NSV_ST_AUDIO]->index;//NSV_ST_AUDIO; pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0; /* keyframe only likely on a sync frame */ if( nsv->state == NSV_HAS_READ_NSVS && st[NSV_ST_VIDEO] ) { @@ -623,8 +620,7 @@ null_chunk_retry: pkt->dts = (((NSVStream*)st[NSV_ST_VIDEO]->priv_data)->frame_offset-1); pkt->dts *= (int64_t)1000 * nsv->framerate.den; pkt->dts += (int64_t)nsv->avsync * nsv->framerate.num; - av_log(s, AV_LOG_TRACE, "NSV AUDIO: sync:%"PRId16", dts:%"PRId64, - nsv->avsync, pkt->dts); + av_log(s, AV_LOG_TRACE, "NSV AUDIO: sync:%d, dts:%"PRId64, nsv->avsync, pkt->dts); } nst->frame_offset++; } @@ -693,11 +689,8 @@ static int nsv_read_close(AVFormatContext *s) static int nsv_probe(AVProbeData *p) { - int i; - int score; - int vsize, asize, auxcount; - score = 0; - av_log(NULL, AV_LOG_TRACE, "nsv_probe(), buf_size %d\n", p->buf_size); + int i, score = 0; + /* check file header */ /* streamed files might not have any header */ if (p->buf[0] == 'N' && p->buf[1] == 'S' && @@ -708,19 +701,14 @@ static int nsv_probe(AVProbeData *p) /* seems the servers don't bother starting clean chunks... */ /* sometimes even the first header is at 9KB or something :^) */ for (i = 1; i < p->buf_size - 3; i++) { - if (p->buf[i+0] == 'N' && p->buf[i+1] == 'S' && - p->buf[i+2] == 'V' && p->buf[i+3] == 's') { - score = AVPROBE_SCORE_MAX/5; + if (AV_RL32(p->buf + i) == AV_RL32("NSVs")) { /* Get the chunk size and check if at the end we are getting 0xBEEF */ - auxcount = p->buf[i+19]; - vsize = p->buf[i+20] | p->buf[i+21] << 8; - asize = p->buf[i+22] | p->buf[i+23] << 8; - vsize = (vsize << 4) | (auxcount >> 4); - if ((asize + vsize + i + 23) < p->buf_size - 2) { - if (p->buf[i+23+asize+vsize+1] == 0xEF && - p->buf[i+23+asize+vsize+2] == 0xBE) - return AVPROBE_SCORE_MAX-20; - } + int vsize = AV_RL24(p->buf+i+19) >> 4; + int asize = AV_RL16(p->buf+i+22); + int offset = i + 23 + asize + vsize + 1; + if (offset <= p->buf_size - 2 && AV_RL16(p->buf + offset) == 0xBEEF) + return 4*AVPROBE_SCORE_MAX/5; + score = AVPROBE_SCORE_MAX/5; } } /* so we'll have more luck on extension... */ |