/*
* THP Demuxer
- * Copyright (c) 2007 Marco Gerards.
+ * Copyright (c) 2007 Marco Gerards
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
+#include "libavutil/intreadwrite.h"
+#include "libavutil/intfloat.h"
#include "avformat.h"
-#include "allformats.h"
+#include "internal.h"
typedef struct ThpDemuxContext {
int version;
return 0;
}
-static int thp_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int thp_read_header(AVFormatContext *s)
{
- ThpDemuxContext *thp = s->priv_data;
- AVStream *st;
- ByteIOContext *pb = &s->pb;
- int i;
-
- /* Read the file header. */
-
- get_be32(pb); /* Skip Magic. */
- thp->version = get_be32(pb);
-
- get_be32(pb); /* Max buf size. */
- get_be32(pb); /* Max samples. */
-
- thp->fps = av_d2q(av_int2flt(get_be32(pb)), INT_MAX);
- thp->framecnt = get_be32(pb);
- thp->first_framesz = get_be32(pb);
- get_be32(pb); /* Data size. */
-
- thp->compoff = get_be32(pb);
- get_be32(pb); /* offsetDataOffset. */
- thp->first_frame = get_be32(pb);
- thp->last_frame = get_be32(pb);
-
- thp->next_framesz = thp->first_framesz;
- thp->next_frame = thp->first_frame;
-
- /* Read the component structure. */
- url_fseek (pb, thp->compoff, SEEK_SET);
- thp->compcount = get_be32(pb);
-
- /* Read the list of component types. */
- get_buffer(pb, thp->components, 16);
-
- for (i = 0; i < thp->compcount; i++) {
- if (thp->components[i] == 0) {
- if (thp->vst != 0)
- break;
-
- /* Video component. */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
-
- /* The denominator and numerator are switched because 1/fps
- is required. */
- av_set_pts_info(st, 64, thp->fps.den, thp->fps.num);
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_THP;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->width = get_be32(pb);
- st->codec->height = get_be32(pb);
- st->codec->sample_rate = av_q2d(thp->fps);
- thp->vst = st;
- thp->video_stream_index = st->index;
-
- if (thp->version == 0x11000)
- get_be32(pb); /* Unknown. */
+ ThpDemuxContext *thp = s->priv_data;
+ AVStream *st;
+ AVIOContext *pb = s->pb;
+ int i;
+
+ /* Read the file header. */
+ avio_rb32(pb); /* Skip Magic. */
+ thp->version = avio_rb32(pb);
+
+ avio_rb32(pb); /* Max buf size. */
+ avio_rb32(pb); /* Max samples. */
+
+ thp->fps = av_d2q(av_int2float(avio_rb32(pb)), INT_MAX);
+ thp->framecnt = avio_rb32(pb);
+ thp->first_framesz = avio_rb32(pb);
+ avio_rb32(pb); /* Data size. */
+
+ thp->compoff = avio_rb32(pb);
+ avio_rb32(pb); /* offsetDataOffset. */
+ thp->first_frame = avio_rb32(pb);
+ thp->last_frame = avio_rb32(pb);
+
+ thp->next_framesz = thp->first_framesz;
+ thp->next_frame = thp->first_frame;
+
+ /* Read the component structure. */
+ avio_seek (pb, thp->compoff, SEEK_SET);
+ thp->compcount = avio_rb32(pb);
+
+ /* Read the list of component types. */
+ avio_read(pb, thp->components, 16);
+
+ for (i = 0; i < thp->compcount; i++) {
+ if (thp->components[i] == 0) {
+ if (thp->vst != 0)
+ break;
+
+ /* Video component. */
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+
+ /* The denominator and numerator are switched because 1/fps
+ is required. */
+ avpriv_set_pts_info(st, 64, thp->fps.den, thp->fps.num);
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = AV_CODEC_ID_THP;
+ st->codec->codec_tag = 0; /* no fourcc */
+ st->codec->width = avio_rb32(pb);
+ st->codec->height = avio_rb32(pb);
+ st->codec->sample_rate = av_q2d(thp->fps);
+ thp->vst = st;
+ thp->video_stream_index = st->index;
+
+ if (thp->version == 0x11000)
+ avio_rb32(pb); /* Unknown. */
+ } else if (thp->components[i] == 1) {
+ if (thp->has_audio != 0)
+ break;
+
+ /* Audio component. */
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codec->codec_id = AV_CODEC_ID_ADPCM_THP;
+ st->codec->codec_tag = 0; /* no fourcc */
+ st->codec->channels = avio_rb32(pb); /* numChannels. */
+ st->codec->sample_rate = avio_rb32(pb); /* Frequency. */
+
+ avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+
+ thp->audio_stream_index = st->index;
+ thp->has_audio = 1;
}
- else if (thp->components[i] == 1) {
- if (thp->has_audio != 0)
- break;
-
- /* Audio component. */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
-
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_ADPCM_THP;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->channels = get_be32(pb); /* numChannels. */
- st->codec->sample_rate = get_be32(pb); /* Frequency. */
-
- av_set_pts_info(st, 64, 1, st->codec->sample_rate);
-
- thp->audio_stream_index = st->index;
- thp->has_audio = 1;
- }
}
- return 0;
+ return 0;
}
static int thp_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
ThpDemuxContext *thp = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ AVIOContext *pb = s->pb;
int size;
int ret;
if (thp->audiosize == 0) {
+ /* Terminate when last frame is reached. */
+ if (thp->frame >= thp->framecnt)
+ return AVERROR(EIO);
- /* Terminate when last frame is reached. */
- if (thp->frame >= thp->framecnt)
- return AVERROR_IO;
+ avio_seek(pb, thp->next_frame, SEEK_SET);
- url_fseek(pb, thp->next_frame, SEEK_SET);
+ /* Locate the next frame and read out its size. */
+ thp->next_frame += thp->next_framesz;
+ thp->next_framesz = avio_rb32(pb);
- /* Locate the next frame and read out its size. */
- thp->next_frame += thp->next_framesz;
- thp->next_framesz = get_be32(pb);
+ avio_rb32(pb); /* Previous total size. */
+ size = avio_rb32(pb); /* Total size of this frame. */
- get_be32(pb); /* Previous total size. */
- size = get_be32(pb); /* Total size of this frame. */
-
- /* Store the audiosize so the next time this function is called,
- the audio can be read. */
- if (thp->has_audio)
- thp->audiosize = get_be32(pb); /* Audio size. */
- else
- thp->frame++;
+ /* Store the audiosize so the next time this function is called,
+ the audio can be read. */
+ if (thp->has_audio)
+ thp->audiosize = avio_rb32(pb); /* Audio size. */
+ else
+ thp->frame++;
- ret = av_get_packet(pb, pkt, size);
- if (ret != size) {
- av_free_packet(pkt);
- return AVERROR_IO;
- }
+ ret = av_get_packet(pb, pkt, size);
+ if (ret != size) {
+ av_free_packet(pkt);
+ return AVERROR(EIO);
+ }
- pkt->stream_index = thp->video_stream_index;
- }
- else {
+ pkt->stream_index = thp->video_stream_index;
+ } else {
ret = av_get_packet(pb, pkt, thp->audiosize);
if (ret != thp->audiosize) {
av_free_packet(pkt);
- return AVERROR_IO;
+ return AVERROR(EIO);
}
pkt->stream_index = thp->audio_stream_index;
+ if (thp->audiosize >= 8)
+ pkt->duration = AV_RB32(&pkt->data[4]);
+
thp->audiosize = 0;
thp->frame++;
}
return 0;
}
-AVInputFormat thp_demuxer = {
- "thp",
- "THP",
- sizeof(ThpDemuxContext),
- thp_probe,
- thp_read_header,
- thp_read_packet
+AVInputFormat ff_thp_demuxer = {
+ .name = "thp",
+ .long_name = NULL_IF_CONFIG_SMALL("THP"),
+ .priv_data_size = sizeof(ThpDemuxContext),
+ .read_probe = thp_probe,
+ .read_header = thp_read_header,
+ .read_packet = thp_read_packet
};
projects / ffmpeg / blobdiff