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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-26 18:20:44 +00:00
mpeg2dec: remove all seeking-related code
A parser or demuxer upstream should handle this Same for queries.
This commit is contained in:
Tim-Philipp Müller
parent
51794ce082
commit
596647664f
1 changed files with 4 additions and 321 deletions
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@ -83,15 +83,6 @@ static void gst_mpeg2dec_reset (GstMpeg2dec * mpeg2dec);
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static gboolean gst_mpeg2dec_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_mpeg2dec_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_mpeg2dec_sink_convert (GstPad * pad, GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
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static gboolean gst_mpeg2dec_src_convert (GstPad * pad, GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
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static GstStateChangeReturn gst_mpeg2dec_change_state (GstElement * element,
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GstStateChange transition);
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@ -172,8 +163,10 @@ gst_mpeg2dec_init (GstMpeg2dec * mpeg2dec)
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gst_pad_new_from_static_template (&src_template_factory, "src");
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gst_pad_set_event_function (mpeg2dec->srcpad,
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GST_DEBUG_FUNCPTR (gst_mpeg2dec_src_event));
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#if 0
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gst_pad_set_query_function (mpeg2dec->srcpad,
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GST_DEBUG_FUNCPTR (gst_mpeg2dec_src_query));
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#endif
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gst_pad_use_fixed_caps (mpeg2dec->srcpad);
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gst_element_add_pad (GST_ELEMENT (mpeg2dec), mpeg2dec->srcpad);
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@ -1271,308 +1264,6 @@ gst_mpeg2dec_setcaps (GstPad * pad, GstCaps * caps)
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return TRUE;
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}
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static gboolean
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gst_mpeg2dec_sink_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
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GstFormat * dest_format, gint64 * dest_value)
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{
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gboolean res = TRUE;
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GstMpeg2dec *mpeg2dec;
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const mpeg2_info_t *info;
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mpeg2dec = GST_MPEG2DEC (GST_PAD_PARENT (pad));
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if (mpeg2dec->decoder == NULL)
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return FALSE;
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if (src_format == *dest_format) {
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*dest_value = src_value;
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return TRUE;
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}
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info = mpeg2_info (mpeg2dec->decoder);
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switch (src_format) {
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case GST_FORMAT_BYTES:
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switch (*dest_format) {
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case GST_FORMAT_TIME:
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if (info->sequence && info->sequence->byte_rate) {
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*dest_value =
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gst_util_uint64_scale (GST_SECOND, src_value,
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info->sequence->byte_rate);
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GST_WARNING_OBJECT (mpeg2dec, "dest_value:%" GST_TIME_FORMAT,
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GST_TIME_ARGS (*dest_value));
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break;
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} else if (info->sequence)
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GST_WARNING_OBJECT (mpeg2dec,
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"Cannot convert from BYTES to TIME since we don't know the bitrate at this point.");
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default:
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res = FALSE;
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}
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break;
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case GST_FORMAT_TIME:
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switch (*dest_format) {
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case GST_FORMAT_BYTES:
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if (info->sequence && info->sequence->byte_rate) {
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*dest_value =
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gst_util_uint64_scale_int (src_value, info->sequence->byte_rate,
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GST_SECOND);
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break;
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} else if (info->sequence)
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GST_WARNING_OBJECT (mpeg2dec,
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"Cannot convert from TIME to BYTES since we don't know the bitrate at this point.");
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default:
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res = FALSE;
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}
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break;
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default:
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res = FALSE;
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}
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return res;
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}
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static gboolean
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gst_mpeg2dec_src_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
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GstFormat * dest_format, gint64 * dest_value)
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{
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gboolean res = TRUE;
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GstMpeg2dec *mpeg2dec;
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const mpeg2_info_t *info;
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guint64 scale = 1;
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mpeg2dec = GST_MPEG2DEC (GST_PAD_PARENT (pad));
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if (mpeg2dec->decoder == NULL)
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return FALSE;
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if (src_format == *dest_format) {
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*dest_value = src_value;
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return TRUE;
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}
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info = mpeg2_info (mpeg2dec->decoder);
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switch (src_format) {
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case GST_FORMAT_BYTES:
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switch (*dest_format) {
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case GST_FORMAT_TIME:
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default:
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res = FALSE;
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}
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break;
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case GST_FORMAT_TIME:
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switch (*dest_format) {
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case GST_FORMAT_BYTES:
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scale = 6 * (mpeg2dec->vinfo.width * mpeg2dec->vinfo.height >> 2);
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case GST_FORMAT_DEFAULT:
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if (info->sequence && mpeg2dec->frame_period) {
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*dest_value =
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gst_util_uint64_scale_int (src_value, scale,
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mpeg2dec->frame_period);
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break;
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}
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default:
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res = FALSE;
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}
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break;
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case GST_FORMAT_DEFAULT:
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switch (*dest_format) {
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case GST_FORMAT_TIME:
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*dest_value = src_value * mpeg2dec->frame_period;
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break;
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case GST_FORMAT_BYTES:
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*dest_value =
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src_value * 6 * ((mpeg2dec->vinfo.width *
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mpeg2dec->vinfo.height) >> 2);
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break;
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default:
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res = FALSE;
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}
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break;
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default:
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res = FALSE;
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}
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return res;
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}
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static gboolean
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gst_mpeg2dec_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
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{
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gboolean res = TRUE;
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GstMpeg2dec *mpeg2dec;
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mpeg2dec = GST_MPEG2DEC (parent);
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_POSITION:
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{
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GstFormat format;
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gint64 cur;
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/* First, we try to ask upstream, which might know better, especially in
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* the case of DVDs, with multiple chapter */
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if ((res = gst_pad_peer_query (mpeg2dec->sinkpad, query)))
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break;
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/* save requested format */
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gst_query_parse_position (query, &format, NULL);
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/* and convert to the requested format */
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if (!gst_mpeg2dec_src_convert (pad, GST_FORMAT_TIME,
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mpeg2dec->next_time, &format, &cur))
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goto error;
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cur = gst_segment_to_stream_time (&mpeg2dec->segment, format, cur);
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if (cur == -1)
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goto error;
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gst_query_set_position (query, format, cur);
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GST_LOG_OBJECT (mpeg2dec,
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"position query: we return %" G_GUINT64_FORMAT " (format %u)", cur,
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format);
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break;
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}
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case GST_QUERY_DURATION:
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{
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GstFormat format;
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GstFormat rformat;
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gint64 total, total_bytes;
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/* save requested format */
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gst_query_parse_duration (query, &format, NULL);
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/* send to peer */
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if ((res = gst_pad_peer_query (mpeg2dec->sinkpad, query))) {
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goto done;
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} else {
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GST_LOG_OBJECT (mpeg2dec, "query on peer pad failed, trying bytes");
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}
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/* query peer for total length in bytes */
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gst_query_set_duration (query, GST_FORMAT_BYTES, -1);
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if (!(res = gst_pad_peer_query (mpeg2dec->sinkpad, query))) {
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GST_LOG_OBJECT (mpeg2dec, "query on peer pad failed");
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goto error;
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}
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/* get the returned format */
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gst_query_parse_duration (query, &rformat, &total_bytes);
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GST_LOG_OBJECT (mpeg2dec,
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"peer pad returned total=%" G_GINT64_FORMAT " bytes", total_bytes);
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if (total_bytes != -1) {
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if (!gst_mpeg2dec_sink_convert (pad, GST_FORMAT_BYTES, total_bytes,
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&format, &total))
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goto error;
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} else {
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total = -1;
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}
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gst_query_set_duration (query, format, total);
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GST_LOG_OBJECT (mpeg2dec,
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"position query: we return %" G_GUINT64_FORMAT " (format %u)", total,
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format);
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break;
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}
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default:
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res = gst_pad_query_default (pad, parent, query);
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break;
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}
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done:
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return res;
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error:
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GST_DEBUG ("error handling query");
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return FALSE;
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}
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#if 0
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static const GstEventMask *
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gst_mpeg2dec_get_event_masks (GstPad * pad)
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{
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static const GstEventMask masks[] = {
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{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH},
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{GST_EVENT_NAVIGATION, GST_EVENT_FLAG_NONE},
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{0,}
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};
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return masks;
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}
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#endif
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static gboolean
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normal_seek (GstPad * pad, GstEvent * event)
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{
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gdouble rate;
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GstFormat format, conv;
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GstSeekFlags flags;
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GstSeekType cur_type, stop_type;
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gint64 cur, stop;
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gint64 time_cur, bytes_cur;
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gint64 time_stop, bytes_stop;
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gboolean res;
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GstMpeg2dec *mpeg2dec;
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GstEvent *peer_event;
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mpeg2dec = GST_MPEG2DEC (GST_PAD_PARENT (pad));
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GST_DEBUG ("normal seek");
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gst_event_parse_seek (event, &rate, &format, &flags,
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&cur_type, &cur, &stop_type, &stop);
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conv = GST_FORMAT_TIME;
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if (!gst_mpeg2dec_src_convert (pad, format, cur, &conv, &time_cur))
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goto convert_failed;
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if (!gst_mpeg2dec_src_convert (pad, format, stop, &conv, &time_stop))
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goto convert_failed;
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GST_DEBUG ("seek to time %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT,
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GST_TIME_ARGS (time_cur), GST_TIME_ARGS (time_stop));
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peer_event = gst_event_new_seek (rate, GST_FORMAT_TIME, flags,
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cur_type, time_cur, stop_type, time_stop);
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/* try seek on time then */
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if ((res = gst_pad_push_event (mpeg2dec->sinkpad, peer_event)))
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goto done;
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/* else we try to seek on bytes */
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conv = GST_FORMAT_BYTES;
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if (!gst_mpeg2dec_sink_convert (pad, GST_FORMAT_TIME, time_cur,
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&conv, &bytes_cur))
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goto convert_failed;
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if (!gst_mpeg2dec_sink_convert (pad, GST_FORMAT_TIME, time_stop,
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&conv, &bytes_stop))
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goto convert_failed;
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/* conversion succeeded, create the seek */
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peer_event =
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gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
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cur_type, bytes_cur, stop_type, bytes_stop);
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/* do the seek */
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res = gst_pad_push_event (mpeg2dec->sinkpad, peer_event);
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done:
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return res;
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/* ERRORS */
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convert_failed:
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{
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/* probably unsupported seek format */
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GST_DEBUG_OBJECT (mpeg2dec,
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"failed to convert format %u into GST_FORMAT_TIME", format);
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return FALSE;
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}
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}
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static gboolean
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gst_mpeg2dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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@ -1585,15 +1276,6 @@ gst_mpeg2dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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goto no_decoder;
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switch (GST_EVENT_TYPE (event)) {
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/* the all-formats seek logic */
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case GST_EVENT_SEEK:{
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gst_event_ref (event);
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if (!(res = gst_pad_push_event (mpeg2dec->sinkpad, event))) {
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res = normal_seek (pad, event); /* FIXME: get rid of seeking code */
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}
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gst_event_unref (event);
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break;
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}
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case GST_EVENT_QOS:
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{
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GstQOSType type;
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@ -1615,8 +1297,9 @@ gst_mpeg2dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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res = gst_pad_push_event (mpeg2dec->sinkpad, event);
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break;
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}
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case GST_EVENT_SEEK:
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case GST_EVENT_NAVIGATION:
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/* Forward a navigation event unchanged */
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/* Forward unchanged */
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default:
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res = gst_pad_push_event (mpeg2dec->sinkpad, event);
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break;
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