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Implement seeking 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16746 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2005-10-12 21:55:55 +00:00
parent 2465a2037d
commit 04a30a8f17
1 changed files with 31 additions and 3 deletions
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34
libmpdemux/demux_mpc.c
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@ -21,6 +21,7 @@
typedef struct da_priv {
float last_pts;
float pts_per_packet;
uint32_t dword;
int pos;
float length;
@ -105,12 +106,12 @@ static demuxer_t *demux_mpc_open(demuxer_t* demuxer) {
priv = (da_priv_t *)malloc(sizeof(da_priv_t));
priv->last_pts = -1;
priv->pts_per_packet = (32 * 36) / (float)sh_audio->wf->nSamplesPerSec;
priv->length = seconds;
priv->dword = 0;
priv->pos = 32; // empty bit buffer
get_bits(priv, s, 8); // discard first 8 bits
demuxer->priv = priv;
demuxer->seekable = 0;
demuxer->audio->id = 0;
demuxer->audio->sh = sh_audio;
sh_audio->ds = demuxer->audio;
@ -145,7 +146,7 @@ static int demux_mpc_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
if (priv->last_pts < 0)
priv->last_pts = 0;
else
priv->last_pts += (36 * 32) / (float)sh_audio->samplerate;
priv->last_pts += priv->pts_per_packet;
ds->pts = priv->last_pts - (ds_tell_pts(demux->audio) -
sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;
ds_add_packet(ds, dp);
@ -153,7 +154,34 @@ static int demux_mpc_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
}
static void demux_mpc_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
// TODO
sh_audio_t* sh_audio = demuxer->audio->sh;
da_priv_t* priv = demuxer->priv;
stream_t* s = demuxer->stream;
float target = rel_seek_secs;
if (flags & 2)
target *= priv->length;
if (!(flags & 1))
target += priv->last_pts;
if (target < priv->last_pts) {
stream_seek(s, demuxer->movi_start);
priv->pos = 32; // empty bit buffer
get_bits(priv, s, 8); // discard first 8 bits
priv->last_pts = 0;
}
while (target > priv->last_pts) {
int bit_len = get_bits(priv, s, 20);
if (bit_len > 32) {
stream_skip(s, bit_len / 32 * 4 - 4);
get_bits(priv, s, 32); // make sure dword is reloaded
}
get_bits(priv, s, bit_len % 32);
priv->last_pts += priv->pts_per_packet;
if (s->eof) break;
}
if (!sh_audio) return;
sh_audio->delay = priv->last_pts - (ds_tell_pts(demuxer->audio) -
sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;
resync_audio_stream(sh_audio);
}
static void demux_close_mpc(demuxer_t* demuxer) {