gstreamer/tests/check/elements/mpegtsmux.c

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/* GStreamer
*
* Copyright (C) 2011 Alessandro Decina <alessandro.d@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <gst/check/gstcheck.h>
#include <string.h>
#include <gst/video/video.h>
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate video_src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h264")
);
static GstStaticPadTemplate audio_src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/mpeg")
);
/* For ease of programming we use globals to keep refs for our floating
* src and sink pads we create; otherwise we always have to do get_pad,
* get_peer, and then remove references in every test function */
static GstPad *mysrcpad, *mysinkpad;
#define AUDIO_CAPS_STRING "audio/mpeg, " \
"channels = (int) 1, " \
"rate = (int) 8000, " \
"mpegversion = (int) 1, "\
"parsed = (boolean) true "
#define VIDEO_CAPS_STRING "video/x-h264, " \
"stream-format = (string) byte-stream, " \
"alignment = (string) nal, " \
"parsed = (boolean) true "
#define KEYFRAME_DISTANCE 10
typedef void (CheckOutputBuffersFunc) (GList * buffers);
/* setup and teardown needs some special handling for muxer */
static GstPad *
setup_src_pad (GstElement * element,
GstStaticPadTemplate * template, const gchar * sinkname, gchar ** padname)
{
GstPad *srcpad, *sinkpad;
GST_DEBUG_OBJECT (element, "setting up sending pad");
/* sending pad */
srcpad = gst_pad_new_from_static_template (template, "src");
fail_if (srcpad == NULL, "Could not create a srcpad");
if (!(sinkpad = gst_element_get_static_pad (element, sinkname)))
sinkpad = gst_element_get_request_pad (element, sinkname);
fail_if (sinkpad == NULL, "Could not get sink pad from %s",
GST_ELEMENT_NAME (element));
/* we can't test the reference count of the sinkpad here because it's either
* 2 or 3: 1 by us, 1 by tsmux and potentially another one by the srcpad
* task of tsmux if it just happens to iterate over the pads */
fail_unless (gst_pad_link (srcpad, sinkpad) == GST_PAD_LINK_OK,
"Could not link source and %s sink pads", GST_ELEMENT_NAME (element));
gst_object_unref (sinkpad); /* because we got it higher up */
if (padname)
*padname = g_strdup (GST_PAD_NAME (sinkpad));
return srcpad;
}
static void
teardown_src_pad (GstElement * element, const gchar * sinkname)
{
GstPad *srcpad, *sinkpad;
/* clean up floating src pad */
if (!(sinkpad = gst_element_get_static_pad (element, sinkname)))
sinkpad = gst_element_get_request_pad (element, sinkname);
srcpad = gst_pad_get_peer (sinkpad);
gst_pad_unlink (srcpad, sinkpad);
GST_DEBUG ("src %p", srcpad);
gst_object_unref (sinkpad);
gst_object_unref (srcpad);
gst_object_unref (srcpad);
}
static GstElement *
setup_tsmux (GstStaticPadTemplate * srctemplate, const gchar * sinkname,
gchar ** padname)
{
GstElement *mux;
GST_DEBUG ("setup_tsmux");
mux = gst_check_setup_element ("mpegtsmux");
mysrcpad = setup_src_pad (mux, srctemplate, sinkname, padname);
mysinkpad = gst_check_setup_sink_pad (mux, &sink_template);
gst_pad_set_active (mysrcpad, TRUE);
gst_pad_set_active (mysinkpad, TRUE);
return mux;
}
static void
cleanup_tsmux (GstElement * mux, const gchar * sinkname)
{
GST_DEBUG ("cleanup_mux");
gst_element_set_state (mux, GST_STATE_NULL);
gst_pad_set_active (mysrcpad, FALSE);
gst_pad_set_active (mysinkpad, FALSE);
teardown_src_pad (mux, sinkname);
gst_check_teardown_sink_pad (mux);
gst_check_teardown_element (mux);
}
static void
check_tsmux_pad_given_muxer (GstElement * mux,
const gchar * src_caps_string, gint pes_id, gint pmt_id,
CheckOutputBuffersFunc check_func, guint n_bufs, gssize input_buf_size)
{
GstClockTime ts;
GstBuffer *inbuffer, *outbuffer;
GstCaps *caps;
gint num_buffers;
gint i;
gint pmt_pid = -1, el_pid = -1, pcr_pid = -1, packets = 0;
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GstQuery *drain;
caps = gst_caps_from_string (src_caps_string);
gst_check_setup_events (mysrcpad, mux, caps, GST_FORMAT_TIME);
gst_caps_unref (caps);
ts = 0;
for (i = 0; i < n_bufs; ++i) {
GstFlowReturn flow;
if (input_buf_size >= 0)
inbuffer = gst_buffer_new_and_alloc (input_buf_size);
else
inbuffer = gst_buffer_new_and_alloc (g_random_int_range (1, 49141));
GST_BUFFER_TIMESTAMP (inbuffer) = ts;
ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
if (i % KEYFRAME_DISTANCE == 0 && pes_id == 0xe0) {
GST_TRACE ("input keyframe");
GST_BUFFER_FLAG_UNSET (inbuffer, GST_BUFFER_FLAG_DELTA_UNIT);
} else {
GST_TRACE ("input delta");
GST_BUFFER_FLAG_SET (inbuffer, GST_BUFFER_FLAG_DELTA_UNIT);
}
flow = gst_pad_push (mysrcpad, inbuffer);
if (flow != GST_FLOW_OK)
fail ("Got %s flow instead of OK", gst_flow_get_name (flow));
ts += 40 * GST_MSECOND;
}
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drain = gst_query_new_drain ();
gst_pad_peer_query (mysrcpad, drain);
gst_query_unref (drain);
if (check_func)
check_func (buffers);
num_buffers = g_list_length (buffers);
/* all output might get aggregated */
fail_unless (num_buffers >= 1);
/* collect buffers in adapter for convenience */
for (i = 0; i < num_buffers; ++i) {
guint8 *odata;
gint size;
GstMapInfo map;
outbuffer = GST_BUFFER (buffers->data);
fail_if (outbuffer == NULL);
buffers = g_list_remove (buffers, outbuffer);
ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
gst_buffer_map (outbuffer, &map, GST_MAP_READ);
odata = map.data;
size = map.size;
fail_unless (size % 188 == 0);
for (; size; odata += 188, size -= 188) {
guint pid, y;
guint8 *data = odata;
/* need sync_byte */
fail_unless (*data == 0x47);
data++;
y = GST_READ_UINT16_BE (data);
pid = y & (0x1FFF);
data += 2;
GST_TRACE ("pid: %d", pid);
y = (y >> 14) & 0x1;
/* only check packets with payload_start_indicator == 1 */
if (!y) {
GST_TRACE ("not at start");
continue;
}
y = *data;
data++;
if (y & 0x20) {
/* adaptation field */
y = *data;
data++;
data += y;
GST_TRACE ("adaptation %d", y);
}
if (pid == 0) {
/* look for PAT */
/* pointer field */
y = *data;
data++;
data += y;
/* table_id */
y = *data;
data++;
fail_unless (y == 0x0);
/* skip */
data += 5;
/* section_number */
y = *data;
fail_unless (y == 0);
data++;
/* last_section_number */
y = *data;
fail_unless (y == 0);
data++;
/* program_number */
y = GST_READ_UINT16_BE (data);
fail_unless (y != 0);
data += 2;
/* program_map_PID */
y = GST_READ_UINT16_BE (data);
pmt_pid = y & 0x1FFF;
fail_unless (pmt_pid > 0x10 && pmt_pid != 0x1FF);
} else if (pid == pmt_pid) {
/* look for PMT */
/* pointer field */
y = *data;
data++;
data += y;
/* table_id */
y = *data;
data++;
fail_unless (y == 0x2);
/* skip */
data += 5;
/* section_number */
y = *data;
fail_unless (y == 0);
data++;
/* last_section_number */
y = *data;
fail_unless (y == 0);
data++;
/* PCR_PID */
y = GST_READ_UINT16_BE (data);
data += 2;
pcr_pid = y & 0x1FFF;
/* program_info_length */
y = GST_READ_UINT16_BE (data);
data += 2;
y = y & 0x0FFF;
data += y;
/* parsing only ES stream */
/* stream_type */
y = *data;
data++;
fail_unless (y == pmt_id);
/* elementary_PID */
y = GST_READ_UINT16_BE (data);
data += 2;
el_pid = y & 0x1FFF;
fail_unless (el_pid > 0x10 && el_pid != 0x1FF);
} else if (pid == el_pid) {
packets++;
/* expect to see a PES packet start */
y = GST_READ_UINT32_BE (data);
fail_unless (y >> 8 == 0x1);
/* stream_id */
y = y & 0xFF;
fail_unless ((pes_id & 0xF0) == (y & 0xF0));
}
}
gst_buffer_unmap (outbuffer, &map);
gst_buffer_unref (outbuffer);
outbuffer = NULL;
}
fail_unless (pmt_pid > 0);
fail_unless (el_pid > 0);
fail_unless (pcr_pid == el_pid);
fail_unless (packets > 0);
g_list_free (buffers);
buffers = NULL;
}
static void
check_tsmux_pad (GstStaticPadTemplate * srctemplate,
const gchar * src_caps_string, gint pes_id, gint pmt_id,
const gchar * sinkname, CheckOutputBuffersFunc check_func, guint n_bufs,
gssize input_buf_size, guint alignment)
{
gchar *padname;
GstElement *mux;
mux = setup_tsmux (srctemplate, sinkname, &padname);
if (alignment != 0)
g_object_set (mux, "alignment", alignment, NULL);
fail_unless (gst_element_set_state (mux,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
"could not set to playing");
check_tsmux_pad_given_muxer (mux, src_caps_string, pes_id, pmt_id,
check_func, n_bufs, input_buf_size);
cleanup_tsmux (mux, padname);
g_free (padname);
}
GST_START_TEST (test_reappearing_pad)
{
gchar *padname;
GstElement *mux;
GstPad *pad;
mux = gst_check_setup_element ("mpegtsmux");
mysrcpad = setup_src_pad (mux, &video_src_template, "sink_%d", &padname);
mysinkpad = gst_check_setup_sink_pad (mux, &sink_template);
gst_pad_set_active (mysrcpad, TRUE);
gst_pad_set_active (mysinkpad, TRUE);
fail_unless (gst_element_set_state (mux,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
"could not set to playing");
check_tsmux_pad_given_muxer (mux, VIDEO_CAPS_STRING, 0xE0, 0x1b, NULL, 1, 1);
pad = gst_element_get_static_pad (mux, padname);
gst_pad_set_active (mysrcpad, FALSE);
gst_object_unref (pad);
teardown_src_pad (mux, padname);
gst_element_release_request_pad (mux, pad);
g_free (padname);
mysrcpad = setup_src_pad (mux, &video_src_template, "sink_%d", &padname);
gst_pad_set_active (mysrcpad, TRUE);
check_tsmux_pad_given_muxer (mux, VIDEO_CAPS_STRING, 0xE0, 0x1b, NULL, 1, 1);
cleanup_tsmux (mux, padname);
g_free (padname);
}
GST_END_TEST;
GST_START_TEST (test_video)
{
check_tsmux_pad (&video_src_template, VIDEO_CAPS_STRING, 0xE0, 0x1b,
"sink_%d", NULL, 1, 1, 0);
}
GST_END_TEST;
GST_START_TEST (test_audio)
{
check_tsmux_pad (&audio_src_template, AUDIO_CAPS_STRING, 0xC0, 0x03,
"sink_%d", NULL, 1, 1, 0);
}
GST_END_TEST;
GST_START_TEST (test_multiple_state_change)
{
GstElement *mux;
gchar *padname;
GstSegment segment;
GstCaps *caps;
size_t i;
/* it's just a sample of all possible permutations of all states and their
* transitions */
GstState states[] = { GST_STATE_PLAYING, GST_STATE_PAUSED, GST_STATE_PLAYING,
GST_STATE_READY, GST_STATE_PAUSED, GST_STATE_PLAYING, GST_STATE_NULL
};
size_t num_transitions_to_test = 10;
mux = setup_tsmux (&video_src_template, "sink_%d", &padname);
gst_segment_init (&segment, GST_FORMAT_TIME);
caps = gst_caps_from_string (VIDEO_CAPS_STRING);
gst_check_setup_events (mysrcpad, mux, caps, GST_FORMAT_TIME);
gst_caps_unref (caps);
for (i = 0; i < num_transitions_to_test; ++i) {
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GstQuery *drain;
GstState next_state = states[i % G_N_ELEMENTS (states)];
fail_unless (gst_element_set_state (mux,
next_state) == GST_STATE_CHANGE_SUCCESS,
"could not set to %s", gst_element_state_get_name (next_state));
/* push some buffers when playing - this triggers a lot of activity */
if (GST_STATE_PLAYING == next_state) {
GstBuffer *inbuffer;
fail_unless (gst_pad_push_event (mysrcpad,
gst_event_new_segment (&segment)));
inbuffer = gst_buffer_new_and_alloc (1);
ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
GST_BUFFER_PTS (inbuffer) = 0;
fail_unless (GST_FLOW_OK == gst_pad_push (mysrcpad, inbuffer));
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drain = gst_query_new_drain ();
gst_pad_peer_query (mysrcpad, drain);
gst_query_unref (drain);
}
}
cleanup_tsmux (mux, padname);
g_free (padname);
}
GST_END_TEST;
static void
test_align_check_output (GList * bufs)
{
GST_LOG ("%u buffers", g_list_length (bufs));
while (bufs != NULL) {
GstBuffer *buf = bufs->data;
gsize size;
size = gst_buffer_get_size (buf);
GST_LOG ("buffer, size = %5u", (guint) size);
fail_unless_equals_int (size, 7 * 188);
bufs = bufs->next;
}
}
GST_START_TEST (test_align)
{
check_tsmux_pad (&video_src_template, VIDEO_CAPS_STRING, 0xE0, 0x1b,
"sink_%d", test_align_check_output, 817, -1, 7);
}
GST_END_TEST;
static void
test_keyframe_propagation_check_output (GList * bufs)
{
guint keyframe_count = 0;
GST_LOG ("%u buffers", g_list_length (bufs));
while (bufs != NULL) {
GstBuffer *buf = bufs->data;
gboolean keyunit;
keyunit = !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
if (keyunit)
++keyframe_count;
GST_LOG ("buffer, keyframe=%d", keyunit);
bufs = bufs->next;
}
fail_unless_equals_int (keyframe_count, 50 / KEYFRAME_DISTANCE);
}
GST_START_TEST (test_keyframe_flag_propagation)
{
check_tsmux_pad (&video_src_template, VIDEO_CAPS_STRING, 0xE0, 0x1b,
"sink_%d", test_keyframe_propagation_check_output, 50, -1, 0);
}
GST_END_TEST;
static Suite *
mpegtsmux_suite (void)
{
Suite *s = suite_create ("mpegtsmux");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_audio);
tcase_add_test (tc_chain, test_video);
tcase_add_test (tc_chain, test_multiple_state_change);
tcase_add_test (tc_chain, test_align);
tcase_add_test (tc_chain, test_keyframe_flag_propagation);
tcase_add_test (tc_chain, test_reappearing_pad);
return s;
}
GST_CHECK_MAIN (mpegtsmux);