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demux: minor simplification to internal API

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Also some other unrelated minor changes.
This commit is contained in:
wm4 2014-07-05 16:59:44 +02:00
parent de71b50249
commit 37085788e4
9 changed files with 24 additions and 34 deletions
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30
demux/demux.c
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@ -80,6 +80,7 @@ const demuxer_desc_t *const demuxer_list[] = {
};
struct demux_stream {
struct demuxer *demuxer;
int selected; // user wants packets from this stream
int eof; // end of demuxed stream? (true if all buffer empty)
int packs; // number of packets in buffer
@ -125,6 +126,7 @@ struct sh_stream *new_sh_stream(demuxer_t *demuxer, enum stream_type type)
.demuxer_id = demuxer_id, // may be overwritten by demuxer
.ds = talloc_zero(sh, struct demux_stream),
};
sh->ds->demuxer = demuxer;
MP_TARRAY_APPEND(demuxer, demuxer->streams, demuxer->num_streams, sh);
switch (sh->type) {
case STREAM_VIDEO: sh->video = talloc_zero(demuxer, struct sh_video); break;
@ -174,14 +176,14 @@ static int count_bytes(struct demuxer *demux, enum stream_type type)
}
// Returns the same value as demuxer->fill_buffer: 1 ok, 0 EOF/not selected.
int demuxer_add_packet(demuxer_t *demuxer, struct sh_stream *stream,
demux_packet_t *dp)
int demux_add_packet(struct sh_stream *stream, demux_packet_t *dp)
{
struct demux_stream *ds = stream ? stream->ds : NULL;
if (!dp || !ds || !ds->selected) {
talloc_free(dp);
return 0;
}
struct demuxer *demuxer = ds->demuxer;
dp->stream = stream->index;
dp->next = NULL;
@ -196,12 +198,7 @@ int demuxer_add_packet(demuxer_t *demuxer, struct sh_stream *stream,
// first packet in stream
ds->head = ds->tail = dp;
}
/* ds_get_packets() can set ds->eof to 1 when another stream runs out of
* buffer space. That makes sense because in that situation the calling
* code should not count on being able to demux more packets from this
* stream. (Can happen with e.g. badly interleaved files.)
* In this case, we didn't necessarily reach EOF, and new packet can
* appear. */
// obviously not true anymore
ds->eof = 0;
// For video, PTS determination is not trivial, but for other media types
@ -209,10 +206,12 @@ int demuxer_add_packet(demuxer_t *demuxer, struct sh_stream *stream,
if (stream->type != STREAM_VIDEO && dp->pts == MP_NOPTS_VALUE)
dp->pts = dp->dts;
MP_DBG(demuxer, "DEMUX: Append packet to %s, len=%d pts=%5.3f pos=%"PRIi64" "
"[packs: A=%d V=%d S=%d]\n", stream_type_name(stream->type),
dp->len, dp->pts, dp->pos, count_packs(demuxer, STREAM_AUDIO),
count_packs(demuxer, STREAM_VIDEO), count_packs(demuxer, STREAM_SUB));
if (mp_msg_test(demuxer->log, MSGL_DEBUG)) {
MP_DBG(demuxer, "DEMUX: Append packet to %s, len=%d pts=%5.3f pos="
"%"PRIi64" [A=%d V=%d S=%d]\n", stream_type_name(stream->type),
dp->len, dp->pts, dp->pos, count_packs(demuxer, STREAM_AUDIO),
count_packs(demuxer, STREAM_VIDEO), count_packs(demuxer, STREAM_SUB));
}
return 1;
}
@ -318,13 +317,6 @@ bool demux_has_packet(struct sh_stream *sh)
return sh && sh->ds->head;
}
// Same as demux_has_packet, but to be called internally by demuxers, as
// opposed to the user of the demuxer.
bool demuxer_stream_has_packets_queued(struct demuxer *d, struct sh_stream *stream)
{
return demux_has_packet(stream);
}
// Return whether EOF was returned with an earlier packet read.
bool demux_stream_eof(struct sh_stream *sh)
{

4
demux/demux.h
View File

@ -226,8 +226,7 @@ typedef struct {
void free_demuxer(struct demuxer *demuxer);
int demuxer_add_packet(demuxer_t *demuxer, struct sh_stream *stream,
demux_packet_t *dp);
int demux_add_packet(struct sh_stream *stream, demux_packet_t *dp);
struct demux_packet *demux_read_packet(struct sh_stream *sh);
double demux_get_next_pts(struct sh_stream *sh);
@ -267,7 +266,6 @@ struct sh_stream *demuxer_stream_by_demuxer_id(struct demuxer *d,
enum stream_type t, int id);
bool demuxer_stream_is_selected(struct demuxer *d, struct sh_stream *stream);
bool demuxer_stream_has_packets_queued(struct demuxer *d, struct sh_stream *stream);
bool demux_matroska_uid_cmp(struct matroska_segment_uid *a,
struct matroska_segment_uid *b);

2
demux/demux_disc.c
View File

@ -193,7 +193,7 @@ static int d_fill_buffer(demuxer_t *demuxer)
pkt->stream_pts = pts;
}
demuxer_add_packet(demuxer, sh, pkt);
demux_add_packet(sh, pkt);
return 1;
}

2
demux/demux_lavf.c
View File

@ -815,7 +815,7 @@ static int demux_lavf_fill_buffer(demuxer_t *demux)
} else if (dp->dts != MP_NOPTS_VALUE) {
priv->last_pts = dp->dts * AV_TIME_BASE;
}
demuxer_add_packet(demux, stream, dp);
demux_add_packet(stream, dp);
return 1;
}

2
demux/demux_mf.c
View File

@ -79,7 +79,7 @@ static int demux_mf_fill_buffer(demuxer_t *demuxer)
memcpy(dp->buffer, data.start, data.len);
dp->pts = mf->curr_frame / mf->sh->fps;
dp->keyframe = true;
demuxer_add_packet(demuxer, demuxer->streams[0], dp);
demux_add_packet(demuxer->streams[0], dp);
}
talloc_free(data.start);
}

8
demux/demux_mkv.c
View File

@ -1984,7 +1984,7 @@ static void handle_realvideo(demuxer_t *demuxer, mkv_track_t *track,
dp->pos = mkv_d->last_filepos;
dp->keyframe = keyframe;
demuxer_add_packet(demuxer, track->stream, dp);
demux_add_packet(track->stream, dp);
}
static void handle_realaudio(demuxer_t *demuxer, mkv_track_t *track,
@ -2094,7 +2094,7 @@ static void handle_realaudio(demuxer_t *demuxer, mkv_track_t *track,
track->audio_timestamp[x * apk_usize / w];
dp->pos = track->audio_filepos; // all equal
dp->keyframe = !x; // Mark first packet as keyframe
demuxer_add_packet(demuxer, track->stream, dp);
demux_add_packet(track->stream, dp);
}
}
} else { // Not a codec that requires reordering
@ -2107,7 +2107,7 @@ static void handle_realaudio(demuxer_t *demuxer, mkv_track_t *track,
dp->pos = mkv_d->last_filepos;
dp->keyframe = keyframe;
demuxer_add_packet(demuxer, track->stream, dp);
demux_add_packet(track->stream, dp);
}
return;
error:
@ -2426,7 +2426,7 @@ static int handle_block(demuxer_t *demuxer, struct block_info *block_info)
if (track->ms_compat)
MPSWAP(double, dp->pts, dp->dts);
dp->duration = block_duration / 1e9;
demuxer_add_packet(demuxer, stream, dp);
demux_add_packet(stream, dp);
}
talloc_free_children(track->parser_tmp);
}

2
demux/demux_raw.c
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@ -232,7 +232,7 @@ static int raw_fill_buffer(demuxer_t *demuxer)
int len = stream_read(demuxer->stream, dp->buffer, dp->len);
demux_packet_shorten(dp, len);
demuxer_add_packet(demuxer, demuxer->streams[0], dp);
demux_add_packet(demuxer->streams[0], dp);
return 1;
}

2
demux/demux_subreader.c
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@ -800,7 +800,7 @@ static int d_fill_buffer(struct demuxer *demuxer)
struct priv *p = demuxer->priv;
struct demux_packet *dp = demux_packet_list_fill(p->pkts, p->num_pkts,
&p->current);
return demuxer_add_packet(demuxer, p->sh, dp);
return demux_add_packet(p->sh, dp);
}
static void d_seek(struct demuxer *demuxer, float secs, int flags)

6
stream/tv.c
View File

@ -298,7 +298,7 @@ static int demux_tv_fill_buffer(demuxer_t *demux)
for (int n = 0; n < demux->num_streams; n++) {
struct sh_stream *sh = demux->streams[n];
if (!demuxer_stream_has_packets_queued(demux, sh) &&
if (!demux_has_packet(sh) &&
demuxer_stream_is_selected(demux, sh))
{
if (sh->type == STREAM_AUDIO)
@ -319,7 +319,7 @@ static int demux_tv_fill_buffer(demuxer_t *demux)
dp=new_demux_packet(len);
dp->keyframe = true;
dp->pts=tvh->functions->grab_audio_frame(tvh->priv, dp->buffer,len);
demuxer_add_packet(demux, want_audio, dp);
demux_add_packet(want_audio, dp);
}
/* ================== ADD VIDEO PACKET =================== */
@ -331,7 +331,7 @@ static int demux_tv_fill_buffer(demuxer_t *demux)
dp=new_demux_packet(len);
dp->keyframe = true;
dp->pts=tvh->functions->grab_video_frame(tvh->priv, dp->buffer, len);
demuxer_add_packet(demux, want_video, dp);
demux_add_packet(want_video, dp);
}
if (tvh->tv_param->scan) tv_scan(tvh);