summaryrefslogtreecommitdiff
path: root/libavformat/mov.c
diff options
context:
space:
mode:
Diffstat (limited to 'libavformat/mov.c')
-rw-r--r--libavformat/mov.c102
1 files changed, 83 insertions, 19 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 6baddebb82..3c8bbc9ca1 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -3,20 +3,20 @@
* Copyright (c) 2001 Fabrice Bellard
* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
*
- * 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
*/
@@ -182,6 +182,8 @@ static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
case MKTAG( 'c','p','r','t'):
case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
+ case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
+ case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
case MKTAG(0xa9,'c','m','t'):
case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
case MKTAG(0xa9,'a','l','b'): key = "album"; break;
@@ -300,7 +302,7 @@ static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
if (atom.size < 0)
atom.size = INT64_MAX;
- while (total_size + 8 < atom.size && !pb->eof_reached) {
+ while (total_size + 8 < atom.size && !url_feof(pb)) {
int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
a.size = atom.size;
a.type=0;
@@ -768,7 +770,7 @@ static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
st = c->fc->streams[c->fc->nb_streams-1];
- little_endian = avio_rb16(pb);
+ little_endian = avio_rb16(pb) & 0xFF;
av_dlog(c->fc, "enda %d\n", little_endian);
if (little_endian == 1) {
switch (st->codec->codec_id) {
@@ -792,7 +794,8 @@ static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
}
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
-static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
+ enum CodecID codec_id)
{
AVStream *st;
uint64_t size;
@@ -801,6 +804,10 @@ static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
if (c->fc->nb_streams < 1) // will happen with jp2 files
return 0;
st= c->fc->streams[c->fc->nb_streams-1];
+
+ if (st->codec->codec_id != codec_id)
+ return 0; /* unexpected codec_id - don't mess with extradata */
+
size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
return -1;
@@ -816,6 +823,27 @@ static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
}
+/* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
+static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, CODEC_ID_ALAC);
+}
+
+static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, CODEC_ID_AVS);
+}
+
+static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, CODEC_ID_MJPEG);
+}
+
+static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ return mov_read_extradata(c, pb, atom, CODEC_ID_JPEG2000);
+}
+
static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
AVStream *st;
@@ -1088,6 +1116,9 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
color_index = 255;
color_dec = 256 / (color_count - 1);
for (j = 0; j < color_count; j++) {
+ if (id == CODEC_ID_CINEPAK){
+ r = g = b = color_count - 1 - color_index;
+ }else
r = g = b = color_index;
sc->palette[j] =
(r << 16) | (g << 8) | (b);
@@ -1229,7 +1260,18 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
st->codec->width = sc->width;
st->codec->height = sc->height;
} else {
- /* other codec type, just skip (rtp, mp4s, tmcd ...) */
+ if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
+ int val;
+ avio_rb32(pb); /* reserved */
+ val = avio_rb32(pb); /* flags */
+ if (val & 1)
+ st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
+ avio_rb32(pb);
+ avio_rb32(pb);
+ st->codec->time_base.den = get_byte(pb);
+ st->codec->time_base.num = 1;
+ }
+ /* other codec type, just skip (rtp, mp4s, ...) */
avio_skip(pb, size - (avio_tell(pb) - start_pos));
}
/* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
@@ -1294,6 +1336,9 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
}
break;
+ case CODEC_ID_AC3:
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ break;
default:
break;
}
@@ -1509,6 +1554,11 @@ static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
sample_count=avio_rb32(pb);
sample_duration = avio_rb32(pb);
+ /* sample_duration < 0 is invalid based on the spec */
+ if (sample_duration < 0) {
+ av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d", sample_duration);
+ sample_duration = 1;
+ }
sc->stts_data[i].count= sample_count;
sc->stts_data[i].duration= sample_duration;
@@ -1555,7 +1605,7 @@ static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
sc->ctts_data[i].count = count;
sc->ctts_data[i].duration= duration;
- if (duration < 0)
+ if (duration < 0 && i+2<entries)
sc->dts_shift = FFMAX(sc->dts_shift, -duration);
}
@@ -1582,7 +1632,7 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
current_dts = -sc->time_offset;
if (sc->ctts_data && sc->stts_data &&
- sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
+ sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
/* more than 16 frames delay, dts are likely wrong
this happens with files created by iMovie */
sc->wrong_dts = 1;
@@ -1744,13 +1794,13 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
}
}
-static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref)
+static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref)
{
/* try relative path, we do not try the absolute because it can leak information about our
system to an attacker */
if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
char filename[1024];
- char *src_path;
+ const char *src_path;
int i, l;
/* find a source dir */
@@ -1969,6 +2019,10 @@ static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
sc->width = width >> 16;
sc->height = height >> 16;
+ if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
+ av_dict_set(&st->metadata, "rotate", "180", 0);
+ }
+
// transform the display width/height according to the matrix
// skip this if the display matrix is the default identity matrix
// or if it is rotating the picture, ex iPhone 3GS
@@ -2256,8 +2310,17 @@ static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
}
+static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ if (atom.size < 16)
+ return AVERROR_INVALIDDATA;
+ avio_skip(pb, 4);
+ ff_mov_read_chan(c->fc, atom.size - 4, c->fc->streams[0]->codec);
+ return 0;
+}
+
static const MOVParseTableEntry mov_default_parse_table[] = {
-{ MKTAG('a','v','s','s'), mov_read_extradata },
+{ MKTAG('a','v','s','s'), mov_read_avss },
{ MKTAG('c','h','p','l'), mov_read_chpl },
{ MKTAG('c','o','6','4'), mov_read_stco },
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
@@ -2266,12 +2329,12 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('e','d','t','s'), mov_read_default },
{ MKTAG('e','l','s','t'), mov_read_elst },
{ MKTAG('e','n','d','a'), mov_read_enda },
-{ MKTAG('f','i','e','l'), mov_read_extradata },
+{ MKTAG('f','i','e','l'), mov_read_fiel },
{ MKTAG('f','t','y','p'), mov_read_ftyp },
{ MKTAG('g','l','b','l'), mov_read_glbl },
{ MKTAG('h','d','l','r'), mov_read_hdlr },
{ MKTAG('i','l','s','t'), mov_read_ilst },
-{ MKTAG('j','p','2','h'), mov_read_extradata },
+{ MKTAG('j','p','2','h'), mov_read_jp2h },
{ MKTAG('m','d','a','t'), mov_read_mdat },
{ MKTAG('m','d','h','d'), mov_read_mdhd },
{ MKTAG('m','d','i','a'), mov_read_default },
@@ -2282,7 +2345,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('m','v','e','x'), mov_read_default },
{ MKTAG('m','v','h','d'), mov_read_mvhd },
{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
-{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
+{ MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
{ MKTAG('a','v','c','C'), mov_read_glbl },
{ MKTAG('p','a','s','p'), mov_read_pasp },
{ MKTAG('s','t','b','l'), mov_read_default },
@@ -2310,6 +2373,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
{ MKTAG('w','f','e','x'), mov_read_wfex },
{ MKTAG('c','m','o','v'), mov_read_cmov },
+{ MKTAG('c','h','a','n'), mov_read_chan },
{ 0, NULL }
};
@@ -2416,7 +2480,7 @@ static void mov_read_chapters(AVFormatContext *s)
if (len == 1 || len == 2)
title[len] = 0;
else
- avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
+ get_strz(sc->pb, title + 2, len - 1);
}
}
@@ -2497,7 +2561,7 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
mov->found_mdat = 0;
if (s->pb->seekable||
mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
- s->pb->eof_reached)
+ url_feof(s->pb))
return AVERROR_EOF;
av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
goto retry;
@@ -2528,7 +2592,7 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
}
#if CONFIG_DV_DEMUXER
if (mov->dv_demux && sc->dv_audio_container) {
- avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
+ avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
av_free(pkt->data);
pkt->size = 0;
ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-21 12:56:21 +0000