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-rw-r--r--libavformat/electronicarts.c115
1 files changed, 80 insertions, 35 deletions
diff --git a/libavformat/electronicarts.c b/libavformat/electronicarts.c
index 7c1fabee0f..d6a396b1ef 100644
--- a/libavformat/electronicarts.c
+++ b/libavformat/electronicarts.c
@@ -1,21 +1,21 @@
/* Electronic Arts Multimedia File Demuxer
- * Copyright (c) 2004 The ffmpeg Project
+ * Copyright (c) 2004 The FFmpeg Project
* Copyright (c) 2006-2008 Peter Ross
*
- * 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
*/
@@ -68,6 +68,7 @@ typedef struct EaDemuxContext {
enum AVCodecID video_codec;
AVRational time_base;
int width, height;
+ int nb_frames;
int video_stream_index;
enum AVCodecID audio_codec;
@@ -108,7 +109,7 @@ static int process_audio_header_elements(AVFormatContext *s)
ea->sample_rate = -1;
ea->num_channels = 1;
- while (!pb->eof_reached && in_header) {
+ while (!avio_feof(pb) && in_header) {
int in_subheader;
uint8_t byte;
byte = avio_r8(pb);
@@ -117,7 +118,7 @@ static int process_audio_header_elements(AVFormatContext *s)
case 0xFD:
av_log(s, AV_LOG_DEBUG, "entered audio subheader\n");
in_subheader = 1;
- while (!pb->eof_reached && in_subheader) {
+ while (!avio_feof(pb) && in_subheader) {
uint8_t subbyte;
subbyte = avio_r8(pb);
@@ -211,8 +212,7 @@ static int process_audio_header_elements(AVFormatContext *s)
case -1:
break;
default:
- av_log(s, AV_LOG_ERROR,
- "unsupported stream type; revision=%i\n", revision);
+ avpriv_request_sample(s, "stream type; revision=%i", revision);
return 0;
}
switch (revision2) {
@@ -220,7 +220,14 @@ static int process_audio_header_elements(AVFormatContext *s)
ea->audio_codec = AV_CODEC_ID_PCM_S16LE_PLANAR;
break;
case 10:
- ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2;
+ switch (revision) {
+ case -1:
+ case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break;
+ case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break;
+ default:
+ avpriv_request_sample(s, "stream type; revision=%i, revision2=%i", revision, revision2);
+ return 0;
+ }
break;
case 16:
ea->audio_codec = AV_CODEC_ID_MP3;
@@ -229,15 +236,14 @@ static int process_audio_header_elements(AVFormatContext *s)
break;
default:
ea->audio_codec = AV_CODEC_ID_NONE;
- av_log(s, AV_LOG_ERROR,
- "unsupported stream type; revision2=%i\n", revision2);
+ avpriv_request_sample(s, "stream type; revision2=%i", revision2);
return 0;
}
break;
default:
- av_log(s, AV_LOG_ERROR,
- "unsupported stream type; compression_type=%i\n",
- compression_type);
+ avpriv_request_sample(s,
+ "stream type; compression_type=%i",
+ compression_type);
return 0;
}
@@ -278,9 +284,9 @@ static void process_audio_header_eacs(AVFormatContext *s)
ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_EACS;
break;
default:
- av_log(s, AV_LOG_ERROR,
- "unsupported stream type; audio compression_type=%i\n",
- compression_type);
+ avpriv_request_sample(s,
+ "stream type; audio compression_type=%i",
+ compression_type);
}
}
@@ -306,15 +312,23 @@ static void process_video_header_mdec(AVFormatContext *s)
ea->video_codec = AV_CODEC_ID_MDEC;
}
-static void process_video_header_vp6(AVFormatContext *s)
+static int process_video_header_vp6(AVFormatContext *s)
{
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
- avio_skip(pb, 16);
+ avio_skip(pb, 8);
+ ea->nb_frames = avio_rl32(pb);
+ avio_skip(pb, 4);
ea->time_base.den = avio_rl32(pb);
ea->time_base.num = avio_rl32(pb);
+ if (ea->time_base.den <= 0 || ea->time_base.num <= 0) {
+ av_log(s, AV_LOG_ERROR, "Timebase is invalid\n");
+ return AVERROR_INVALIDDATA;
+ }
ea->video_codec = AV_CODEC_ID_VP6;
+
+ return 1;
}
static void process_video_header_cmv(AVFormatContext *s)
@@ -339,20 +353,25 @@ static int process_ea_header(AVFormatContext *s)
int i;
for (i = 0; i < 5 && (!ea->audio_codec || !ea->video_codec); i++) {
- unsigned int startpos = avio_tell(pb);
+ uint64_t startpos = avio_tell(pb);
int err = 0;
blockid = avio_rl32(pb);
size = avio_rl32(pb);
if (i == 0)
- ea->big_endian = size > 0x000FFFFF;
+ ea->big_endian = size > av_bswap32(size);
if (ea->big_endian)
size = av_bswap32(size);
+ if (size < 8) {
+ av_log(s, AV_LOG_ERROR, "chunk size too small\n");
+ return AVERROR_INVALIDDATA;
+ }
+
switch (blockid) {
case ISNh_TAG:
if (avio_rl32(pb) != EACS_TAG) {
- av_log(s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
+ avpriv_request_sample(s, "unknown 1SNh headerid");
return 0;
}
process_audio_header_eacs(s);
@@ -364,7 +383,7 @@ static int process_ea_header(AVFormatContext *s)
if (blockid == GSTR_TAG) {
avio_skip(pb, 4);
} else if ((blockid & 0xFFFF) != PT00_TAG) {
- av_log(s, AV_LOG_ERROR, "unknown SCHl headerid\n");
+ avpriv_request_sample(s, "unknown SCHl headerid");
return 0;
}
err = process_audio_header_elements(s);
@@ -380,7 +399,6 @@ static int process_ea_header(AVFormatContext *s)
case kVGT_TAG:
ea->video_codec = AV_CODEC_ID_TGV;
- ea->time_base = (AVRational) { 1, 15 };
break;
case mTCD_TAG:
@@ -409,7 +427,7 @@ static int process_ea_header(AVFormatContext *s)
break;
case MVhd_TAG:
- process_video_header_vp6(s);
+ err = process_video_header_vp6(s);
break;
}
@@ -428,6 +446,8 @@ static int process_ea_header(AVFormatContext *s)
static int ea_probe(AVProbeData *p)
{
+ unsigned big_endian, size;
+
switch (AV_RL32(&p->buf[0])) {
case ISNh_TAG:
case SCHl_TAG:
@@ -442,7 +462,11 @@ static int ea_probe(AVProbeData *p)
default:
return 0;
}
- if (AV_RL32(&p->buf[4]) > 0xfffff && AV_RB32(&p->buf[4]) > 0xfffff)
+ size = AV_RL32(&p->buf[4]);
+ big_endian = size > 0x000FFFFF;
+ if (big_endian)
+ size = av_bswap32(size);
+ if (size > 0xfffff || size < 8)
return 0;
return AVPROBE_SCORE_MAX;
@@ -453,7 +477,7 @@ static int ea_read_header(AVFormatContext *s)
EaDemuxContext *ea = s->priv_data;
AVStream *st;
- if (!process_ea_header(s))
+ if (process_ea_header(s)<=0)
return AVERROR(EIO);
if (ea->video_codec) {
@@ -464,12 +488,17 @@ static int ea_read_header(AVFormatContext *s)
ea->video_stream_index = st->index;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = ea->video_codec;
+ // parsing is necessary to make FFmpeg generate correct timestamps
+ if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO)
+ st->need_parsing = AVSTREAM_PARSE_HEADERS;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = ea->width;
st->codec->height = ea->height;
- avpriv_set_pts_info(st, 33, ea->time_base.num, ea->time_base.den);
- st->avg_frame_rate = (AVRational) { ea->time_base.den,
- ea->time_base.num };
+ st->duration = st->nb_frames = ea->nb_frames;
+ if (ea->time_base.num)
+ avpriv_set_pts_info(st, 64, ea->time_base.num, ea->time_base.den);
+ st->r_frame_rate =
+ st->avg_frame_rate = av_inv_q(ea->time_base);
}
if (ea->audio_codec) {
@@ -519,11 +548,12 @@ static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
{
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
+ int partial_packet = 0;
unsigned int chunk_type, chunk_size;
int ret = 0, packet_read = 0, key = 0;
int av_uninit(num_samples);
- while (!packet_read) {
+ while (!packet_read || partial_packet) {
chunk_type = avio_rl32(pb);
chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
if (chunk_size < 8)
@@ -551,6 +581,13 @@ static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
avio_skip(pb, 8);
chunk_size -= 12;
}
+
+ if (partial_packet) {
+ avpriv_request_sample(s, "video header followed by audio packet");
+ av_free_packet(pkt);
+ partial_packet = 0;
+ }
+
if (!chunk_size)
continue;
@@ -630,9 +667,15 @@ get_video_packet:
if (!chunk_size)
continue;
- ret = av_get_packet(pb, pkt, chunk_size);
- if (ret < 0)
- return ret;
+ if (partial_packet) {
+ ret = av_append_packet(pb, pkt, chunk_size);
+ } else
+ ret = av_get_packet(pb, pkt, chunk_size);
+ if (ret < 0) {
+ packet_read = 1;
+ break;
+ }
+ partial_packet = chunk_type == MVIh_TAG;
pkt->stream_index = ea->video_stream_index;
pkt->flags |= key;
packet_read = 1;
@@ -644,6 +687,8 @@ get_video_packet:
}
}
+ if (ret < 0 && partial_packet)
+ av_free_packet(pkt);
return ret;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-02 04:05:13 +0000