avformat: add DHAV demuxer
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
0279cb4f69
commit
b80003fe28
|
|
@ -8,6 +8,7 @@ version <next>:
|
|||
- chromashift and rgbashift filters
|
||||
- freezedetect filter
|
||||
- truehd_core bitstream filter
|
||||
- dhav demuxer
|
||||
|
||||
|
||||
version 4.1:
|
||||
|
|
|
|||
|
|
@ -149,6 +149,7 @@ OBJS-$(CONFIG_DAUD_DEMUXER) += dauddec.o
|
|||
OBJS-$(CONFIG_DAUD_MUXER) += daudenc.o
|
||||
OBJS-$(CONFIG_DCSTR_DEMUXER) += dcstr.o
|
||||
OBJS-$(CONFIG_DFA_DEMUXER) += dfa.o
|
||||
OBJS-$(CONFIG_DHAV_DEMUXER) += dhav.o
|
||||
OBJS-$(CONFIG_DIRAC_DEMUXER) += diracdec.o rawdec.o
|
||||
OBJS-$(CONFIG_DIRAC_MUXER) += rawenc.o
|
||||
OBJS-$(CONFIG_DNXHD_DEMUXER) += dnxhddec.o rawdec.o
|
||||
|
|
|
|||
|
|
@ -110,6 +110,7 @@ extern AVInputFormat ff_daud_demuxer;
|
|||
extern AVOutputFormat ff_daud_muxer;
|
||||
extern AVInputFormat ff_dcstr_demuxer;
|
||||
extern AVInputFormat ff_dfa_demuxer;
|
||||
extern AVInputFormat ff_dhav_demuxer;
|
||||
extern AVInputFormat ff_dirac_demuxer;
|
||||
extern AVOutputFormat ff_dirac_muxer;
|
||||
extern AVInputFormat ff_dnxhd_demuxer;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,296 @@
|
|||
/*
|
||||
* DHAV demuxer
|
||||
*
|
||||
* Copyright (c) 2018 Paul B Mahol
|
||||
*
|
||||
* This file is part of FFmpeg.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* 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 FFmpeg; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include "libavutil/avassert.h"
|
||||
#include "avio_internal.h"
|
||||
#include "avformat.h"
|
||||
#include "internal.h"
|
||||
|
||||
typedef struct DHAVContext {
|
||||
unsigned type;
|
||||
int width, height;
|
||||
int video_codec;
|
||||
int frame_rate;
|
||||
int channels;
|
||||
int audio_codec;
|
||||
int sample_rate;
|
||||
int64_t pts;
|
||||
|
||||
int video_stream_index;
|
||||
int audio_stream_index;
|
||||
} DHAVContext;
|
||||
|
||||
static int dhav_probe(AVProbeData *p)
|
||||
{
|
||||
if (!memcmp(p->buf, "DAHUA", 5))
|
||||
return AVPROBE_SCORE_MAX;
|
||||
|
||||
if (memcmp(p->buf, "DHAV", 4))
|
||||
return 0;
|
||||
|
||||
if (p->buf[4] == 0xf0 ||
|
||||
p->buf[4] == 0xf1 ||
|
||||
p->buf[4] == 0xfc ||
|
||||
p->buf[4] == 0xfd)
|
||||
return AVPROBE_SCORE_MAX;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dhav_read_header(AVFormatContext *s)
|
||||
{
|
||||
DHAVContext *dhav = s->priv_data;
|
||||
uint8_t signature[5];
|
||||
|
||||
ffio_ensure_seekback(s->pb, 5);
|
||||
avio_read(s->pb, signature, sizeof(signature));
|
||||
if (!memcmp(signature, "DAHUA", 5))
|
||||
avio_skip(s->pb, 0x400 - 5);
|
||||
else
|
||||
avio_seek(s->pb, -5, SEEK_CUR);
|
||||
|
||||
s->ctx_flags |= AVFMTCTX_NOHEADER;
|
||||
dhav->video_stream_index = -1;
|
||||
dhav->audio_stream_index = -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const uint32_t sample_rates[] = {
|
||||
8000, 4000, 8000, 11025, 16000,
|
||||
20000, 22050, 32000, 44100, 48000,
|
||||
96000, 192000, 64000,
|
||||
};
|
||||
|
||||
static int parse_ext(AVFormatContext *s, int length)
|
||||
{
|
||||
DHAVContext *dhav = s->priv_data;
|
||||
int index;
|
||||
|
||||
while (length > 0) {
|
||||
int type = avio_r8(s->pb);
|
||||
|
||||
switch (type) {
|
||||
case 0x80:
|
||||
avio_skip(s->pb, 1);
|
||||
dhav->width = 8 * avio_r8(s->pb);
|
||||
dhav->height = 8 * avio_r8(s->pb);
|
||||
length -= 4;
|
||||
break;
|
||||
case 0x81:
|
||||
avio_skip(s->pb, 1);
|
||||
dhav->video_codec = avio_r8(s->pb);
|
||||
dhav->frame_rate = avio_r8(s->pb);
|
||||
length -= 4;
|
||||
break;
|
||||
case 0x82:
|
||||
avio_skip(s->pb, 3);
|
||||
dhav->width = avio_rl16(s->pb);
|
||||
dhav->height = avio_rl16(s->pb);
|
||||
length -= 8;
|
||||
break;
|
||||
case 0x83:
|
||||
dhav->channels = avio_r8(s->pb);
|
||||
dhav->audio_codec = avio_r8(s->pb);
|
||||
index = avio_r8(s->pb);
|
||||
if (index < FF_ARRAY_ELEMS(sample_rates)) {
|
||||
dhav->sample_rate = sample_rates[index];
|
||||
} else {
|
||||
dhav->sample_rate = 8000;
|
||||
}
|
||||
length -= 4;
|
||||
break;
|
||||
case 0x88:
|
||||
avio_skip(s->pb, 7);
|
||||
length -= 8;
|
||||
break;
|
||||
case 0x8c:
|
||||
avio_skip(s->pb, 1);
|
||||
dhav->channels = avio_r8(s->pb);
|
||||
dhav->audio_codec = avio_r8(s->pb);
|
||||
index = avio_r8(s->pb);
|
||||
if (index < FF_ARRAY_ELEMS(sample_rates)) {
|
||||
dhav->sample_rate = sample_rates[index];
|
||||
} else {
|
||||
dhav->sample_rate = 8000;
|
||||
}
|
||||
avio_skip(s->pb, 3);
|
||||
length -= 8;
|
||||
break;
|
||||
case 0x91:
|
||||
case 0x92:
|
||||
case 0x93:
|
||||
case 0x95:
|
||||
case 0x9a:
|
||||
case 0x9b: // sample aspect ratio
|
||||
case 0xb3:
|
||||
avio_skip(s->pb, 7);
|
||||
length -= 8;
|
||||
break;
|
||||
case 0x84:
|
||||
case 0x85:
|
||||
case 0x8b:
|
||||
case 0x94:
|
||||
case 0x96:
|
||||
case 0xa0:
|
||||
case 0xb2:
|
||||
case 0xb4:
|
||||
avio_skip(s->pb, 3);
|
||||
length -= 4;
|
||||
break;
|
||||
default:
|
||||
av_log(s, AV_LOG_INFO, "Unknown type: %X, skipping rest of header.\n", type);
|
||||
avio_skip(s->pb, length - 1);
|
||||
length = 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int read_chunk(AVFormatContext *s)
|
||||
{
|
||||
DHAVContext *dhav = s->priv_data;
|
||||
unsigned size, skip;
|
||||
int64_t start, end;
|
||||
int ret;
|
||||
|
||||
start = avio_tell(s->pb);
|
||||
|
||||
if (avio_feof(s->pb))
|
||||
return AVERROR_EOF;
|
||||
|
||||
if (avio_rl32(s->pb) != MKTAG('D','H','A','V'))
|
||||
return AVERROR_INVALIDDATA;
|
||||
|
||||
dhav->type = avio_r8(s->pb);
|
||||
avio_skip(s->pb, 3);
|
||||
dhav->pts = avio_rl32(s->pb);
|
||||
size = avio_rl32(s->pb);
|
||||
if (size < 24)
|
||||
return AVERROR_INVALIDDATA;
|
||||
if (dhav->type == 0xf1) {
|
||||
avio_skip(s->pb, size - 16);
|
||||
return 0;
|
||||
}
|
||||
|
||||
avio_rl32(s->pb);
|
||||
avio_skip(s->pb, 2);
|
||||
skip = avio_r8(s->pb);
|
||||
avio_skip(s->pb, 1);
|
||||
|
||||
ret = parse_ext(s, skip);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
end = avio_tell(s->pb);
|
||||
|
||||
return size - 8 - (end - start);
|
||||
}
|
||||
|
||||
static int dhav_read_packet(AVFormatContext *s, AVPacket *pkt)
|
||||
{
|
||||
DHAVContext *dhav = s->priv_data;
|
||||
int64_t start;
|
||||
int ret;
|
||||
|
||||
start = avio_tell(s->pb);
|
||||
|
||||
while ((ret = read_chunk(s)) == 0)
|
||||
;
|
||||
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (dhav->type == 0xfd && dhav->video_stream_index == -1) {
|
||||
AVStream *st = avformat_new_stream(s, NULL);
|
||||
|
||||
if (!st)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
|
||||
switch (dhav->video_codec) {
|
||||
case 0x1: st->codecpar->codec_id = AV_CODEC_ID_MPEG4; break;
|
||||
case 0x3: st->codecpar->codec_id = AV_CODEC_ID_MJPEG; break;
|
||||
case 0x2:
|
||||
case 0x4:
|
||||
case 0x8: st->codecpar->codec_id = AV_CODEC_ID_H264; break;
|
||||
case 0xc: st->codecpar->codec_id = AV_CODEC_ID_HEVC; break;
|
||||
default: avpriv_request_sample(s, "Unknown video codec %X\n", dhav->video_codec);
|
||||
}
|
||||
st->codecpar->width = dhav->width;
|
||||
st->codecpar->height = dhav->height;
|
||||
dhav->video_stream_index = st->index;
|
||||
|
||||
avpriv_set_pts_info(st, 64, 1, dhav->frame_rate);
|
||||
} else if (dhav->type == 0xf0 && dhav->audio_stream_index == -1) {
|
||||
AVStream *st = avformat_new_stream(s, NULL);
|
||||
|
||||
if (!st)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
||||
switch (dhav->audio_codec) {
|
||||
case 0x07: st->codecpar->codec_id = AV_CODEC_ID_PCM_S8; break;
|
||||
case 0x0c: st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE; break;
|
||||
case 0x10: st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE; break;
|
||||
case 0x0a: st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW; break;
|
||||
case 0x16: st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW; break;
|
||||
case 0x0e: st->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW; break;
|
||||
case 0x1a: st->codecpar->codec_id = AV_CODEC_ID_AAC; break;
|
||||
case 0x1f: st->codecpar->codec_id = AV_CODEC_ID_MP2; break;
|
||||
case 0x21: st->codecpar->codec_id = AV_CODEC_ID_MP3; break;
|
||||
case 0x0d: st->codecpar->codec_id = AV_CODEC_ID_ADPCM_MS; break;
|
||||
default: avpriv_request_sample(s, "Unknown audio codec %X\n", dhav->audio_codec);
|
||||
}
|
||||
st->codecpar->channels = dhav->channels;
|
||||
st->codecpar->sample_rate = dhav->sample_rate;
|
||||
dhav->audio_stream_index = st->index;
|
||||
|
||||
avpriv_set_pts_info(st, 64, ret, dhav->sample_rate);
|
||||
}
|
||||
|
||||
ret = av_get_packet(s->pb, pkt, ret);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
pkt->stream_index = dhav->type == 0xf0 ? dhav->audio_stream_index : dhav->video_stream_index;
|
||||
if (dhav->type != 0xfc)
|
||||
pkt->flags |= AV_PKT_FLAG_KEY;
|
||||
pkt->pts = dhav->pts;
|
||||
pkt->duration = 1;
|
||||
pkt->pos = start;
|
||||
if (avio_rl32(s->pb) != MKTAG('d','h','a','v'))
|
||||
return AVERROR_INVALIDDATA;
|
||||
avio_skip(s->pb, 4);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVInputFormat ff_dhav_demuxer = {
|
||||
.name = "dhav",
|
||||
.long_name = NULL_IF_CONFIG_SMALL("Video DAV"),
|
||||
.priv_data_size = sizeof(DHAVContext),
|
||||
.read_probe = dhav_probe,
|
||||
.read_header = dhav_read_header,
|
||||
.read_packet = dhav_read_packet,
|
||||
.extensions = "dav",
|
||||
.flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
|
||||
};
|
||||
|
|
@ -32,7 +32,7 @@
|
|||
// Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
|
||||
// Also please add any ticket numbers that you believe might be affected here
|
||||
#define LIBAVFORMAT_VERSION_MAJOR 58
|
||||
#define LIBAVFORMAT_VERSION_MINOR 22
|
||||
#define LIBAVFORMAT_VERSION_MINOR 23
|
||||
#define LIBAVFORMAT_VERSION_MICRO 100
|
||||
|
||||
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
|
||||
|
|
|
|||
Loading…
Reference in New Issue