* 4X Technologies .4xm File Demuxer (no muxer)
* Copyright (c) 2003 The ffmpeg Project
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
int64_t audio_pts;
int64_t video_pts;
- int video_pts_inc;
float fps;
} FourxmDemuxContext;
-static float get_le_float(unsigned char *buffer)
-{
- float f;
- unsigned char *float_buffer = (unsigned char *)&f;
-
-#ifdef WORDS_BIGENDIAN
- float_buffer[0] = buffer[3];
- float_buffer[1] = buffer[2];
- float_buffer[2] = buffer[1];
- float_buffer[3] = buffer[0];
-#else
- float_buffer[0] = buffer[0];
- float_buffer[1] = buffer[1];
- float_buffer[2] = buffer[2];
- float_buffer[3] = buffer[3];
-#endif
-
- return f;
-}
-
static int fourxm_probe(AVProbeData *p)
{
if (p->buf_size < 12)
size = LE_32(&header[i + 4]);
if (fourcc_tag == std__TAG) {
- fourxm->fps = get_le_float(&header[i + 12]);
- fourxm->video_pts_inc = (int)(90000.0 / fourxm->fps);
+ fourxm->fps = av_int2flt(LE_32(&header[i + 12]));
} else if (fourcc_tag == vtrk_TAG) {
/* check that there is enough data */
if (size != vtrk_SIZE) {
st = av_new_stream(s, 0);
if (!st)
return AVERROR_NOMEM;
- av_set_pts_info(st, 33, 1, 90000);
+ av_set_pts_info(st, 60, 1, fourxm->fps);
fourxm->video_stream_index = st->index;
- st->codec.frame_rate = fourxm->fps;
- st->codec.frame_rate_base = 1.0;
- st->codec.codec_type = CODEC_TYPE_VIDEO;
- st->codec.codec_id = CODEC_ID_4XM;
- st->codec.codec_tag = 0; /* no fourcc */
- st->codec.width = fourxm->width;
- st->codec.height = fourxm->height;
+ st->codec->codec_type = CODEC_TYPE_VIDEO;
+ st->codec->codec_id = CODEC_ID_4XM;
+ st->codec->codec_tag = 0; /* no fourcc */
+ st->codec->width = fourxm->width;
+ st->codec->height = fourxm->height;
} else if (fourcc_tag == strk_TAG) {
/* check that there is enough data */
fourxm->track_count = current_track + 1;
if((unsigned)fourxm->track_count >= UINT_MAX / sizeof(AudioTrack))
return -1;
- fourxm->tracks = av_realloc(fourxm->tracks,
+ fourxm->tracks = av_realloc(fourxm->tracks,
fourxm->track_count * sizeof(AudioTrack));
if (!fourxm->tracks) {
av_free(header);
if (!st)
return AVERROR_NOMEM;
- /* set the pts reference (1 pts = 1/90000) */
- av_set_pts_info(st, 33, 1, 90000);
+ av_set_pts_info(st, 60, 1, fourxm->tracks[current_track].sample_rate);
fourxm->tracks[current_track].stream_index = st->index;
- st->codec.codec_type = CODEC_TYPE_AUDIO;
- st->codec.codec_tag = 1;
- st->codec.channels = fourxm->tracks[current_track].channels;
- st->codec.sample_rate = fourxm->tracks[current_track].sample_rate;
- st->codec.bits_per_sample = fourxm->tracks[current_track].bits;
- st->codec.bit_rate = st->codec.channels * st->codec.sample_rate *
- st->codec.bits_per_sample;
- st->codec.block_align = st->codec.channels * st->codec.bits_per_sample;
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_tag = 0;
+ st->codec->channels = fourxm->tracks[current_track].channels;
+ st->codec->sample_rate = fourxm->tracks[current_track].sample_rate;
+ st->codec->bits_per_sample = fourxm->tracks[current_track].bits;
+ st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
+ st->codec->bits_per_sample;
+ st->codec->block_align = st->codec->channels * st->codec->bits_per_sample;
if (fourxm->tracks[current_track].adpcm)
- st->codec.codec_id = CODEC_ID_ADPCM_4XM;
- else if (st->codec.bits_per_sample == 8)
- st->codec.codec_id = CODEC_ID_PCM_U8;
+ st->codec->codec_id = CODEC_ID_ADPCM_4XM;
+ else if (st->codec->bits_per_sample == 8)
+ st->codec->codec_id = CODEC_ID_PCM_U8;
else
- st->codec.codec_id = CODEC_ID_PCM_S16LE;
+ st->codec->codec_id = CODEC_ID_PCM_S16LE;
}
}
return AVERROR_INVALIDDATA;
/* initialize context members */
- fourxm->video_pts = -fourxm->video_pts_inc; /* first frame will push to 0 */
+ fourxm->video_pts = -1; /* first frame will push to 0 */
fourxm->audio_pts = 0;
return 0;
int track_number;
int packet_read = 0;
unsigned char header[8];
- int64_t pts_inc;
int audio_frame_count;
while (!packet_read) {
case LIST_TAG:
/* this is a good time to bump the video pts */
- fourxm->video_pts += fourxm->video_pts_inc;
+ fourxm->video_pts ++;
/* skip the LIST-* tag and move on to the next fourcc */
get_le32(pb);
return AVERROR_IO;
pkt->stream_index = fourxm->video_stream_index;
pkt->pts = fourxm->video_pts;
+ pkt->pos = url_ftell(&s->pb);
memcpy(pkt->data, header, 8);
ret = get_buffer(&s->pb, &pkt->data[8], size);
size-=8;
if (track_number == fourxm->selected_track) {
- if (av_new_packet(pkt, size))
+ ret= av_get_packet(&s->pb, pkt, size);
+ if(ret<0)
return AVERROR_IO;
- pkt->stream_index =
+ pkt->stream_index =
fourxm->tracks[fourxm->selected_track].stream_index;
pkt->pts = fourxm->audio_pts;
- ret = get_buffer(&s->pb, pkt->data, size);
- if (ret < 0)
- av_free_packet(pkt);
- else
- packet_read = 1;
+ packet_read = 1;
/* pts accounting */
audio_frame_count = size;
if (fourxm->tracks[fourxm->selected_track].adpcm)
- audio_frame_count -=
+ audio_frame_count -=
2 * (fourxm->tracks[fourxm->selected_track].channels);
audio_frame_count /=
fourxm->tracks[fourxm->selected_track].channels;
if (fourxm->tracks[fourxm->selected_track].adpcm)
audio_frame_count *= 2;
- else
+ else
audio_frame_count /=
(fourxm->tracks[fourxm->selected_track].bits / 8);
- pts_inc = audio_frame_count;
- pts_inc *= 90000;
- pts_inc /= fourxm->tracks[fourxm->selected_track].sample_rate;
- fourxm->audio_pts += pts_inc;
+ fourxm->audio_pts += audio_frame_count;
} else {
url_fseek(pb, size, SEEK_CUR);
return 0;
}
-static AVInputFormat fourxm_iformat = {
+AVInputFormat fourxm_demuxer = {
"4xm",
"4X Technologies format",
sizeof(FourxmDemuxContext),
fourxm_read_packet,
fourxm_read_close,
};
-
-int fourxm_init(void)
-{
- av_register_input_format(&fourxm_iformat);
- return 0;
-}
projects / ffmpeg / blobdiff