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Small improvements
Original commit message from CVS: Small improvements
This commit is contained in:
Wim Taymans
parent
f5b06f0e6a
commit
769ab2d316
2 changed files with 42 additions and 10 deletions
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@ -204,6 +204,7 @@ gst_mpeg2dec_init (GstMpeg2dec *mpeg2dec)
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/* initialize the mpeg2dec acceleration */
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mpeg2_accel (MPEG2_ACCEL_DETECT);
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mpeg2dec->closed = TRUE;
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mpeg2dec->have_fbuf = FALSE;
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GST_FLAG_SET (GST_ELEMENT (mpeg2dec), GST_ELEMENT_EVENT_AWARE);
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}
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@ -224,6 +225,7 @@ gst_mpeg2dec_open_decoder (GstMpeg2dec *mpeg2dec)
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gst_mpeg2dec_close_decoder (mpeg2dec);
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mpeg2dec->decoder = mpeg2_init ();
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mpeg2dec->closed = FALSE;
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mpeg2dec->have_fbuf = FALSE;
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}
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static void
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@ -384,6 +386,26 @@ update_streaminfo (GstMpeg2dec *mpeg2dec)
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g_object_notify (G_OBJECT (mpeg2dec), "streaminfo");
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}
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static void
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gst_mpeg2dec_flush_decoder (GstMpeg2dec *mpeg2dec)
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{
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gint state;
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if (mpeg2dec->decoder) {
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const mpeg2_info_t *info = mpeg2_info (mpeg2dec->decoder);
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do {
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state = mpeg2_parse (mpeg2dec->decoder);
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if (state == STATE_END) {
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if (info->discard_fbuf && info->discard_fbuf->id) {
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gst_buffer_unref ((GstBuffer *)info->discard_fbuf->id);
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}
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}
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}
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while (state != -1);
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}
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}
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static void
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gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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{
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@ -401,9 +423,10 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_DISCONTINUOUS:
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{
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GST_DEBUG (GST_CAT_EVENT, "discont\n");
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GST_DEBUG (GST_CAT_EVENT, "discont");
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mpeg2dec->next_time = 0;
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mpeg2dec->discont_state = MPEG2DEC_DISC_NEW_PICTURE;
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gst_mpeg2dec_flush_decoder (mpeg2dec);
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gst_pad_event_default (pad, event);
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return;
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}
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@ -458,15 +481,18 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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if (!gst_mpeg2dec_negotiate_format (mpeg2dec)) {
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gst_element_error (GST_ELEMENT (mpeg2dec), "could not negotiate format");
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return;
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goto exit;
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}
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update_streaminfo (mpeg2dec);
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/* alloc 3 buffers */
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gst_mpeg2dec_alloc_buffer (mpeg2dec, info, GST_BUFFER_OFFSET (buf));
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gst_mpeg2dec_alloc_buffer (mpeg2dec, info, GST_BUFFER_OFFSET (buf));
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gst_mpeg2dec_alloc_buffer (mpeg2dec, info, GST_BUFFER_OFFSET (buf));
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if (!mpeg2dec->have_fbuf) {
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/* alloc 3 buffers */
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gst_mpeg2dec_alloc_buffer (mpeg2dec, info, GST_BUFFER_OFFSET (buf));
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gst_mpeg2dec_alloc_buffer (mpeg2dec, info, GST_BUFFER_OFFSET (buf));
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gst_mpeg2dec_alloc_buffer (mpeg2dec, info, GST_BUFFER_OFFSET (buf));
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mpeg2dec->have_fbuf = TRUE;
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}
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mpeg2dec->need_sequence = FALSE;
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if (mpeg2dec->pending_event) {
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@ -479,7 +505,6 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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}
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case STATE_SEQUENCE_REPEATED:
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GST_DEBUG (0, "sequence repeated");
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break;
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case STATE_GOP:
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break;
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case STATE_PICTURE:
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@ -516,6 +541,7 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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case STATE_END:
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{
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GstBuffer *outbuf = NULL;
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gboolean skip = FALSE;
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if (!slice) {
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mpeg2dec->need_sequence = TRUE;
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@ -542,15 +568,18 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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if (picture->flags & PIC_FLAG_PTS) {
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GstClockTime time = MPEGTIME_TO_GSTTIME (picture->pts);
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GST_DEBUG (0, "picture had pts %lld", time);
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GST_BUFFER_TIMESTAMP (outbuf) = time;
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mpeg2dec->next_time = time;
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}
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else {
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GST_DEBUG (0, "picture didn't have pts using %lld", mpeg2dec->next_time);
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GST_BUFFER_TIMESTAMP (outbuf) = mpeg2dec->next_time;
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}
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mpeg2dec->next_time += (mpeg2dec->frame_period * picture->nb_fields) >> 1;
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GST_DEBUG (0, "picture: %s %s fields:%d off:%lld ts:%lld",
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(picture->flags & PIC_FLAG_TOP_FIELD_FIRST ? "tff " : " "),
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(picture->flags & PIC_FLAG_PROGRESSIVE_FRAME ? "prog" : " "),
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@ -569,7 +598,8 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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if (picture->flags & PIC_FLAG_SKIP ||
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!GST_PAD_IS_USABLE (mpeg2dec->srcpad) ||
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mpeg2dec->discont_state != MPEG2DEC_DISC_NONE ||
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mpeg2dec->next_time < mpeg2dec->segment_start)
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mpeg2dec->next_time < mpeg2dec->segment_start ||
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skip)
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{
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gst_buffer_unref (outbuf);
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}
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@ -611,6 +641,7 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
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}
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}
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}
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exit:
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gst_buffer_unref(buf);
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}
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@ -878,7 +909,7 @@ index_seek (GstPad *pad, GstEvent *event)
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/* do the seekk */
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if (gst_pad_send_event (GST_PAD_PEER (mpeg2dec->sinkpad), seek_event)) {
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/* seek worked, we're done, loop will exit */
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while (mpeg2_parse (mpeg2dec->decoder) != -1);
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gst_mpeg2dec_flush_decoder (mpeg2dec);
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mpeg2dec->segment_start = GST_EVENT_SEEK_OFFSET (event);
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return TRUE;
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}
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@ -946,7 +977,7 @@ normal_seek (GstPad *pad, GstEvent *event)
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* failed */
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if (res && flush) {
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/* if we need to flush, iterate until the buffer is empty */
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while (mpeg2_parse (mpeg2dec->decoder) != -1);
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gst_mpeg2dec_flush_decoder (mpeg2dec);
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}
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return res;
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@ -70,6 +70,7 @@ struct _GstMpeg2dec {
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mpeg2dec_t *decoder;
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gboolean closed;
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gboolean have_fbuf;
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/* the timestamp of the next frame */
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DiscontState discont_state;
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