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rtmpsrc: Add support for seeking

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This commit is contained in:
Sebastian Dröge 2010-06-06 15:24:23 +02:00
parent fdf1598173
commit 827ecadb81
2 changed files with 120 additions and 8 deletions
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124
ext/rtmp/gstrtmpsrc.c
View file

@ -81,6 +81,9 @@ static void gst_rtmp_src_finalize (GObject * object);
static gboolean gst_rtmp_src_stop (GstBaseSrc * src);
static gboolean gst_rtmp_src_start (GstBaseSrc * src);
static gboolean gst_rtmp_src_is_seekable (GstBaseSrc * src);
static gboolean gst_rtmp_src_prepare_seek_segment (GstBaseSrc * src,
GstEvent * event, GstSegment * segment);
static gboolean gst_rtmp_src_do_seek (GstBaseSrc * src, GstSegment * segment);
static GstFlowReturn gst_rtmp_src_create (GstPushSrc * pushsrc,
GstBuffer ** buffer);
static gboolean gst_rtmp_src_query (GstBaseSrc * src, GstQuery * query);
@ -146,6 +149,9 @@ gst_rtmp_src_class_init (GstRTMPSrcClass * klass)
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_rtmp_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_rtmp_src_stop);
gstbasesrc_class->is_seekable = GST_DEBUG_FUNCPTR (gst_rtmp_src_is_seekable);
gstbasesrc_class->prepare_seek_segment =
GST_DEBUG_FUNCPTR (gst_rtmp_src_prepare_seek_segment);
gstbasesrc_class->do_seek = GST_DEBUG_FUNCPTR (gst_rtmp_src_do_seek);
gstpushsrc_class->create = GST_DEBUG_FUNCPTR (gst_rtmp_src_create);
gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_rtmp_src_query);
}
@ -155,6 +161,8 @@ gst_rtmp_src_init (GstRTMPSrc * rtmpsrc, GstRTMPSrcClass * klass)
{
rtmpsrc->cur_offset = 0;
rtmpsrc->last_timestamp = 0;
gst_base_src_set_format (GST_BASE_SRC (rtmpsrc), GST_FORMAT_TIME);
}
static void
@ -323,16 +331,20 @@ gst_rtmp_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
return GST_FLOW_ERROR;
}
todo = size;
data = GST_BUFFER_DATA (buf);
read = 0;
todo = size;
while (todo > 0) {
read = RTMP_Read (src->rtmp, (char *) data, todo);
if (G_UNLIKELY (read == 0))
if (G_UNLIKELY (read == 0 && todo == size))
goto eos;
else if (G_UNLIKELY (read == 0)) {
GST_BUFFER_SIZE (buf) -= todo;
todo = 0;
break;
}
if (G_UNLIKELY (read == -1))
goto read_failed;
@ -346,11 +358,22 @@ gst_rtmp_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
GST_LOG (" got size %" G_GUINT64_FORMAT, read);
}
src->last_timestamp = src->rtmp->m_mediaStamp * GST_MSECOND;
if (src->discont) {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
src->discont = FALSE;
}
src->last_timestamp =
MAX (src->last_timestamp, src->rtmp->m_mediaStamp * GST_MSECOND);
GST_BUFFER_TIMESTAMP (buf) = src->last_timestamp;
GST_BUFFER_OFFSET (buf) = src->cur_offset;
src->cur_offset += size;
GST_LOG_OBJECT (src, "Created buffer of size %u at %" G_GINT64_FORMAT
" with timestamp %" GST_TIME_FORMAT, size, GST_BUFFER_OFFSET (buf),
GST_TIME_ARGS (src->last_timestamp));
/* we're done, return the buffer */
*buffer = buf;
@ -359,8 +382,7 @@ gst_rtmp_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
read_failed:
{
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
("Failed to read data: %s", "FIXME"));
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), ("Failed to read data"));
return GST_FLOW_ERROR;
}
eos:
@ -424,7 +446,91 @@ gst_rtmp_src_is_seekable (GstBaseSrc * basesrc)
src = GST_RTMP_SRC (basesrc);
return src->seekable;
}
static gboolean
gst_rtmp_src_prepare_seek_segment (GstBaseSrc * basesrc, GstEvent * event,
GstSegment * segment)
{
GstRTMPSrc *src;
GstSeekType cur_type, stop_type;
gint64 cur, stop;
GstSeekFlags flags;
GstFormat format;
gdouble rate;
src = GST_RTMP_SRC (basesrc);
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
if (!src->seekable) {
GST_LOG_OBJECT (src, "Not a seekable stream");
return FALSE;
}
if (!src->rtmp) {
GST_LOG_OBJECT (src, "Not connected yet");
return FALSE;
}
if (format != GST_FORMAT_TIME) {
GST_LOG_OBJECT (src, "Seeking only supported in TIME format");
return FALSE;
}
if (stop_type != GST_SEEK_TYPE_NONE) {
GST_LOG_OBJECT (src, "Setting a stop position is not supported");
return FALSE;
}
gst_segment_init (segment, GST_FORMAT_TIME);
gst_segment_set_seek (segment, rate, format, flags, cur_type, cur, stop_type,
stop, NULL);
return TRUE;
}
static gboolean
gst_rtmp_src_do_seek (GstBaseSrc * basesrc, GstSegment * segment)
{
GstRTMPSrc *src;
src = GST_RTMP_SRC (basesrc);
if (segment->format != GST_FORMAT_TIME) {
GST_LOG_OBJECT (src, "Only time based seeks are supported");
return FALSE;
}
if (!src->seekable) {
GST_LOG_OBJECT (src, "Not a seekable stream");
return FALSE;
}
if (!src->rtmp) {
GST_LOG_OBJECT (src, "Not connected yet");
return FALSE;
}
src->discont = TRUE;
src->last_timestamp = 0;
/* Initial seek */
if (src->cur_offset == 0 && segment->start == 0)
return TRUE;
if (!RTMP_SendSeek (src->rtmp, segment->start / GST_MSECOND)) {
GST_ERROR_OBJECT (src, "Seeking failed");
src->seekable = FALSE;
return FALSE;
}
GST_DEBUG_OBJECT (src, "Seek to %" GST_TIME_FORMAT " successfull",
GST_TIME_ARGS (segment->start));
return TRUE;
}
#define STR2AVAL(av,str) G_STMT_START { \
@ -449,6 +555,9 @@ gst_rtmp_src_start (GstBaseSrc * basesrc)
}
src->cur_offset = 0;
src->last_timestamp = 0;
src->seekable = TRUE;
src->discont = TRUE;
uri_copy = g_strdup (src->uri);
src->rtmp = RTMP_Alloc ();
@ -506,7 +615,8 @@ gst_rtmp_src_stop (GstBaseSrc * basesrc)
}
src->cur_offset = 0;
src->last_timestamp = GST_CLOCK_TIME_NONE;
src->last_timestamp = 0;
src->discont = TRUE;
return TRUE;
}

2
ext/rtmp/gstrtmpsrc.h
View file

@ -66,6 +66,8 @@ struct _GstRTMPSrc
gint64 cur_offset;
GstClockTime last_timestamp;
gboolean seekable;
gboolean discont;
};
struct _GstRTMPSrcClass