From 92118c0b11abf16bb1c3728f0340bf3202a0898e Mon Sep 17 00:00:00 2001 From: Carlos Rafael Giani Date: Wed, 24 Oct 2012 12:30:10 +0200 Subject: [PATCH] tets: add unit test for mpg123audiodec https://bugzilla.gnome.org/show_bug.cgi?id=686595 --- tests/check/Makefile.am | 5 + tests/check/elements/mpg123audiodec.c | 581 ++++++++++++++++++++++++++ tests/files/cbr_stream.mp3 | Bin 0 -> 3135 bytes tests/files/stream.mp2 | Bin 0 -> 2925 bytes tests/files/vbr_stream.mp3 | Bin 0 -> 3798 bytes 5 files changed, 586 insertions(+) create mode 100644 tests/check/elements/mpg123audiodec.c create mode 100644 tests/files/cbr_stream.mp3 create mode 100644 tests/files/stream.mp2 create mode 100644 tests/files/vbr_stream.mp3 diff --git a/tests/check/Makefile.am b/tests/check/Makefile.am index c1a87298ee..f9556a6c59 100644 --- a/tests/check/Makefile.am +++ b/tests/check/Makefile.am @@ -212,6 +212,7 @@ check_PROGRAMS = \ elements/mpegtsmux \ elements/mpegvideoparse \ elements/mpeg4videoparse \ + elements/mpg123audiodec \ elements/mxfdemux \ elements/mxfmux \ elements/id3mux \ @@ -351,6 +352,10 @@ elements_assrender_LDADD = $(GST_PLUGINS_BASE_LIBS) -lgstvideo-$(GST_API_VERSION elements_mpegtsmux_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(AM_CFLAGS) elements_mpegtsmux_LDADD = $(GST_PLUGINS_BASE_LIBS) -lgstvideo-$(GST_API_VERSION) $(GST_BASE_LIBS) $(LDADD) +elements_mpg123audiodec_LDADD = \ + $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) $(GST_LIBS) $(LDADD) \ + -lgstaudio-@GST_API_VERSION@ -lgstfft-@GST_API_VERSION@ -lgstapp-@GST_API_VERSION@ + elements_uvch264demux_CFLAGS = -DUVCH264DEMUX_DATADIR="$(srcdir)/elements/uvch264demux_data" \ $(AM_CFLAGS) diff --git a/tests/check/elements/mpg123audiodec.c b/tests/check/elements/mpg123audiodec.c new file mode 100644 index 0000000000..fd7c620e30 --- /dev/null +++ b/tests/check/elements/mpg123audiodec.c @@ -0,0 +1,581 @@ +/* GStreamer + * + * unit test for mpg123audiodec + * + * Copyright (c) 2012 Carlos Rafael Giani + * + * 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include + +#include +#include + +#include +#include +#include +#include +#include + +#include + +/* 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 MP2_STREAM_FILENAME "stream.mp2" +#define MP3_CBR_STREAM_FILENAME "cbr_stream.mp3" +#define MP3_VBR_STREAM_FILENAME "vbr_stream.mp3" + + +/* mpeg 1 layer 2 stream created with: + * gst-launch-1.0 -v audiotestsrc wave=sine freq=440 volume=1 num-buffers=32 ! \ + * "audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)1" ! \ + * avenc_mp2 bitrate=32000 ! tee name=t \ + * t. ! queue ! fakesink silent=false \ + * t. ! queue ! filesink location=test.mp2 + * + * mpeg 1 layer 3 CBR stream created with: + * gst-launch-1.0 -v audiotestsrc wave=sine freq=440 volume=1 num-buffers=32 ! \ + * "audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)1" ! \ + * lamemp3enc encoding-engine-quality=high cbr=true target=bitrate bitrate=32 ! \ + * "audio/mpeg, rate=(int)44100, channels=(int)1" ! tee name=t \ + * t. ! queue ! fakesink silent=false \ + * t. ! queue ! filesink location=test.mp3 + * + * mpeg 1 layer 3 VBR stream created with: + * gst-launch-1.0 -v audiotestsrc wave=sine freq=440 volume=1 num-buffers=32 ! \ + * "audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)1" ! \ + * lamemp3enc encoding-engine-quality=high cbr=false target=quality quality=7 ! \ + * "audio/mpeg, rate=(int)44100, channels=(int)1" ! tee name=t \ + * t. ! queue ! fakesink silent=false \ + * t. ! queue ! filesink location=test.mp3 + */ + + +/* FFT test helpers taken from gst-plugins-base tests/check/audioresample.c */ + +#define FFT_HELPERS(type,ffttag,ffttag2,scale) \ +static gdouble magnitude##ffttag (const GstFFT##ffttag##Complex *c) \ +{ \ + gdouble mag = (gdouble) c->r * (gdouble) c->r; \ + mag += (gdouble) c->i * (gdouble) c->i; \ + mag /= scale * scale; \ + mag = 10.0 * log10 (mag); \ + return mag; \ +} \ +static gdouble find_main_frequency_spot_##ffttag ( \ + const GstFFT##ffttag##Complex *v, int elements) \ +{ \ + int i; \ + gdouble maxmag = -9999; \ + int maxidx = 0; \ + for (i=0; i maxmag) { \ + maxmag = mag; \ + maxidx = i; \ + } \ + } \ + return maxidx / (gdouble) elements; \ +} \ +static gboolean is_zero_except_##ffttag (const GstFFT##ffttag##Complex *v, \ + int elements, gdouble spot) \ +{ \ + int i; \ + for (i=0; i 0.01) { \ + if (mag > -35.0) { \ + GST_LOG("Found magnitude at %f : %f (peak at %f)\n", pos, mag, spot); \ + return FALSE; \ + } \ + } \ + } \ + return TRUE; \ +} \ +static void check_main_frequency_spot_##ffttag (GstBuffer *buffer, gdouble \ + expected_spot) \ +{ \ + GstMapInfo map; \ + int num_samples; \ + gdouble actual_spot; \ + GstFFT##ffttag *ctx; \ + GstFFT##ffttag##Complex *fftdata; \ + \ + gst_buffer_map (buffer, &map, GST_MAP_READ); \ + \ + num_samples = map.size / sizeof(type) & ~1; \ + ctx = gst_fft_##ffttag2##_new (num_samples, FALSE); \ + fftdata = g_new (GstFFT##ffttag##Complex, num_samples / 2 + 1); \ + \ + gst_fft_##ffttag2##_window (ctx, (type*)map.data, \ + GST_FFT_WINDOW_HAMMING); \ + gst_fft_##ffttag2##_fft (ctx, (type*)map.data, fftdata); \ + \ + actual_spot = find_main_frequency_spot_##ffttag (fftdata, \ + num_samples / 2 + 1); \ + GST_LOG ("Expected spot: %.3f actual: %.3f %f", expected_spot, actual_spot, \ + fabs (expected_spot - actual_spot)); \ + fail_unless (fabs (expected_spot - actual_spot) < 0.05, \ + "Actual main frequency spot is too far away from expected one"); \ + fail_unless (is_zero_except_##ffttag (fftdata, num_samples / 2 + 1, \ + actual_spot), "One secondary peak in spectrum exceeds threshold"); \ + \ + gst_buffer_unmap (buffer, &map); \ + \ + gst_fft_##ffttag2##_free (ctx); \ + g_free (fftdata); \ +} +FFT_HELPERS (gint32, S32, s32, 2147483647.0); + + +static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-raw, format = (string) S32LE ") + ); +static GstStaticPadTemplate layer2_srctemplate = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); +static GstStaticPadTemplate layer3_srctemplate = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + + +static void +setup_input_pipeline (gchar const *stream_filename, GstElement ** pipeline, + GstElement ** appsink) +{ + GstElement *source, *parser; + + *pipeline = gst_pipeline_new (NULL); + source = gst_element_factory_make ("filesrc", NULL); + parser = gst_element_factory_make ("mpegaudioparse", NULL); + *appsink = gst_element_factory_make ("appsink", NULL); + + gst_bin_add_many (GST_BIN (*pipeline), source, parser, *appsink, NULL); + gst_element_link_many (source, parser, *appsink, NULL); + + { + char *full_filename = + g_build_filename (GST_TEST_FILES_PATH, stream_filename, NULL); + g_object_set (G_OBJECT (source), "location", full_filename, NULL); + g_free (full_filename); + } + + gst_element_set_state (*pipeline, GST_STATE_PLAYING); +} + +static void +cleanup_input_pipeline (GstElement * pipeline) +{ + gst_element_set_state (pipeline, GST_STATE_NULL); + gst_object_unref (pipeline); +} + +static GstElement * +setup_mpeg1layer2dec (void) +{ + GstElement *mpg123audiodec; + GstSegment seg; + GstCaps *caps; + + GST_DEBUG ("setup_mpeg1layer2dec"); + mpg123audiodec = gst_check_setup_element ("mpg123audiodec"); + mysrcpad = gst_check_setup_src_pad (mpg123audiodec, &layer2_srctemplate); + mysinkpad = gst_check_setup_sink_pad (mpg123audiodec, &sinktemplate); + gst_pad_set_active (mysrcpad, TRUE); + gst_pad_set_active (mysinkpad, TRUE); + + gst_segment_init (&seg, GST_FORMAT_TIME); + gst_pad_push_event (mysrcpad, gst_event_new_segment (&seg)); + + /* This is necessary to trigger a set_format call in the decoder; + * fixed caps don't trigger it */ + caps = gst_caps_new_simple ("audio/mpeg", + "mpegversion", G_TYPE_INT, 1, + "layer", G_TYPE_INT, 2, + "rate", G_TYPE_INT, 44100, + "channels", G_TYPE_INT, 1, "parsed", G_TYPE_BOOLEAN, TRUE, NULL); + gst_pad_set_caps (mysrcpad, caps); + gst_caps_unref (caps); + + return mpg123audiodec; +} + +static GstElement * +setup_mpeg1layer3dec (void) +{ + GstElement *mpg123audiodec; + GstSegment seg; + GstCaps *caps; + + GST_DEBUG ("setup_mpeg1layer3dec"); + mpg123audiodec = gst_check_setup_element ("mpg123audiodec"); + mysrcpad = gst_check_setup_src_pad (mpg123audiodec, &layer3_srctemplate); + mysinkpad = gst_check_setup_sink_pad (mpg123audiodec, &sinktemplate); + gst_pad_set_active (mysrcpad, TRUE); + gst_pad_set_active (mysinkpad, TRUE); + + gst_segment_init (&seg, GST_FORMAT_TIME); + gst_pad_push_event (mysrcpad, gst_event_new_segment (&seg)); + + /* This is necessary to trigger a set_format call in the decoder; + * fixed caps don't trigger it */ + caps = gst_caps_new_simple ("audio/mpeg", + "mpegversion", G_TYPE_INT, 1, + "layer", G_TYPE_INT, 3, + "rate", G_TYPE_INT, 44100, + "channels", G_TYPE_INT, 1, "parsed", G_TYPE_BOOLEAN, TRUE, NULL); + gst_pad_set_caps (mysrcpad, caps); + gst_caps_unref (caps); + + return mpg123audiodec; +} + +static void +cleanup_mpg123audiodec (GstElement * mpg123audiodec) +{ + GST_DEBUG ("cleanup_mpeg1layer2dec"); + gst_element_set_state (mpg123audiodec, GST_STATE_NULL); + + gst_pad_set_active (mysrcpad, FALSE); + gst_pad_set_active (mysinkpad, FALSE); + gst_check_teardown_src_pad (mpg123audiodec); + gst_check_teardown_sink_pad (mpg123audiodec); + gst_check_teardown_element (mpg123audiodec); +} + +static void +run_decoding_test (GstElement * mpg123audiodec, gchar const *filename) +{ + GstBus *bus; + unsigned int num_input_buffers, num_decoded_buffers; + gint expected_size; + GstCaps *out_caps, *caps; + GstAudioInfo audioinfo; + GstElement *input_pipeline, *input_appsink; + int i; + GstBuffer *outbuffer; + + /* 440 Hz = frequency of sine wave in audio data + * 44100 Hz = sample rate + * (44100 / 2) Hz = Nyquist frequency */ + static double const expected_frequency_spot = 440.0 / (44100.0 / 2.0); + + fail_unless (gst_element_set_state (mpg123audiodec, + GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS, + "could not set to playing"); + bus = gst_bus_new (); + + gst_element_set_bus (mpg123audiodec, bus); + + setup_input_pipeline (filename, &input_pipeline, &input_appsink); + + num_input_buffers = 0; + while (TRUE) { + GstSample *sample; + GstBuffer *input_buffer; + + sample = gst_app_sink_pull_sample (GST_APP_SINK (input_appsink)); + if (sample == NULL) + break; + + fail_unless (GST_IS_SAMPLE (sample)); + + input_buffer = gst_sample_get_buffer (sample); + fail_if (input_buffer == NULL); + + /* This is done to be on the safe side - docs say lifetime of the input buffer + * depends *solely* on the sample */ + input_buffer = gst_buffer_copy (input_buffer); + + fail_unless_equals_int (gst_pad_push (mysrcpad, input_buffer), GST_FLOW_OK); + + ++num_input_buffers; + } + + num_decoded_buffers = g_list_length (buffers); + + /* check number of decoded buffers */ + fail_unless_equals_int (num_decoded_buffers, num_input_buffers - 2); + + caps = gst_pad_get_current_caps (mysinkpad); + GST_LOG ("output caps %" GST_PTR_FORMAT, caps); + fail_unless (gst_audio_info_from_caps (&audioinfo, caps), + "Getting audio info from caps failed"); + + /* check caps */ + out_caps = gst_caps_new_simple ("audio/x-raw", + "format", G_TYPE_STRING, "S32LE", + "layout", G_TYPE_STRING, "interleaved", + "rate", G_TYPE_INT, 44100, "channels", G_TYPE_INT, 1, NULL); + + fail_unless (gst_caps_is_equal_fixed (caps, out_caps), "Incorrect out caps"); + + gst_caps_unref (out_caps); + gst_caps_unref (caps); + + /* here, test if decoded data is a sine tone, and if the sine frequency is at the + * right spot in the spectrum */ + for (i = 0; i < num_decoded_buffers; ++i) { + outbuffer = GST_BUFFER (buffers->data); + fail_if (outbuffer == NULL, "Invalid buffer retrieved"); + + /* MPEG 1 layer 2 uses 1152 samples per frame */ + expected_size = 1152 * GST_AUDIO_INFO_BPF (&audioinfo); + fail_unless_equals_int (gst_buffer_get_size (outbuffer), expected_size); + + check_main_frequency_spot_S32 (outbuffer, expected_frequency_spot); + + buffers = g_list_remove (buffers, outbuffer); + gst_buffer_unref (outbuffer); + outbuffer = NULL; + } + + g_list_free (buffers); + buffers = NULL; + + cleanup_input_pipeline (input_pipeline); + gst_bus_set_flushing (bus, TRUE); + gst_element_set_bus (mpg123audiodec, NULL); + gst_object_unref (GST_OBJECT (bus)); +} + + +GST_START_TEST (test_decode_mpeg1layer2) +{ + GstElement *mpg123audiodec; + mpg123audiodec = setup_mpeg1layer2dec (); + run_decoding_test (mpg123audiodec, MP2_STREAM_FILENAME); + cleanup_mpg123audiodec (mpg123audiodec); + mpg123audiodec = NULL; +} + +GST_END_TEST; + + +GST_START_TEST (test_decode_mpeg1layer3_cbr) +{ + GstElement *mpg123audiodec; + mpg123audiodec = setup_mpeg1layer3dec (); + run_decoding_test (mpg123audiodec, MP3_CBR_STREAM_FILENAME); + cleanup_mpg123audiodec (mpg123audiodec); +} + +GST_END_TEST; + + +GST_START_TEST (test_decode_mpeg1layer3_vbr) +{ + GstElement *mpg123audiodec; + mpg123audiodec = setup_mpeg1layer3dec (); + run_decoding_test (mpg123audiodec, MP3_VBR_STREAM_FILENAME); + cleanup_mpg123audiodec (mpg123audiodec); +} + +GST_END_TEST; + + +GST_START_TEST (test_decode_garbage_mpeg1layer2) +{ + GstElement *mpg123audiodec; + GstBuffer *inbuffer; + GstBus *bus; + int i, num_buffers; + guint32 *tmpbuf; + + mpg123audiodec = setup_mpeg1layer2dec (); + + fail_unless (gst_element_set_state (mpg123audiodec, + GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS, + "could not set to playing"); + bus = gst_bus_new (); + + /* initialize the buffer with something that is no mpeg2 */ + tmpbuf = g_new (guint32, 4096); + for (i = 0; i < 4096; i++) { + tmpbuf[i] = i; + } + inbuffer = gst_buffer_new_wrapped (tmpbuf, 4096 * sizeof (guint32)); + + ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1); + + gst_element_set_bus (mpg123audiodec, bus); + + /* should be possible to push without problems but nothing gets decoded */ + fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK); + + num_buffers = g_list_length (buffers); + + /* should be 0 buffers as decoding should've been impossible */ + fail_unless_equals_int (num_buffers, 0); + + g_list_free (buffers); + buffers = NULL; + + gst_bus_set_flushing (bus, TRUE); + gst_element_set_bus (mpg123audiodec, NULL); + gst_object_unref (GST_OBJECT (bus)); + cleanup_mpg123audiodec (mpg123audiodec); + mpg123audiodec = NULL; +} + +GST_END_TEST; + + +GST_START_TEST (test_decode_garbage_mpeg1layer3) +{ + GstElement *mpg123audiodec; + GstBuffer *inbuffer; + GstBus *bus; + int i, num_buffers; + guint32 *tmpbuf; + + mpg123audiodec = setup_mpeg1layer3dec (); + + fail_unless (gst_element_set_state (mpg123audiodec, + GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS, + "could not set to playing"); + bus = gst_bus_new (); + + /* initialize the buffer with something that is no mpeg2 */ + tmpbuf = g_new (guint32, 4096); + for (i = 0; i < 4096; i++) { + tmpbuf[i] = i; + } + inbuffer = gst_buffer_new_wrapped (tmpbuf, 4096 * sizeof (guint32)); + + ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1); + + gst_element_set_bus (mpg123audiodec, bus); + + /* should be possible to push without problems but nothing gets decoded */ + fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK); + + num_buffers = g_list_length (buffers); + + /* should be 0 buffers as decoding should've been impossible */ + fail_unless_equals_int (num_buffers, 0); + + g_list_free (buffers); + buffers = NULL; + + gst_bus_set_flushing (bus, TRUE); + gst_element_set_bus (mpg123audiodec, NULL); + gst_object_unref (GST_OBJECT (bus)); + cleanup_mpg123audiodec (mpg123audiodec); + mpg123audiodec = NULL; +} + +GST_END_TEST; + + +static gboolean +is_test_file_available (gchar const *filename) +{ + gboolean ret; + gchar *full_filename; + gchar *cwd; + + cwd = g_get_current_dir (); + full_filename = g_build_filename (cwd, GST_TEST_FILES_PATH, filename, NULL); + ret = + g_file_test (full_filename, G_FILE_TEST_IS_REGULAR | G_FILE_TEST_EXISTS); + g_free (full_filename); + g_free (cwd); + return ret; +} + + +static Suite * +mpg123audiodec_suite (void) +{ + gboolean has_necessary_elements = TRUE; + Suite *s = suite_create ("mpg123audiodec"); + TCase *tc_chain = tcase_create ("general"); + + /* check if mpegaudioparse, appsink, and filesrc elments are available */ + { + gchar const **element; + gchar const *elements[] = { "filesrc", "mpegaudioparse", "appsink", NULL }; + + for (element = elements; *element != NULL; ++element) { + GstElement *e; + GstStateChangeReturn ret; + + e = gst_element_factory_make (*element, NULL); + if (e == NULL) { + has_necessary_elements = FALSE; + break; + } + + ret = gst_element_set_state (e, GST_STATE_READY); + if (ret == GST_STATE_CHANGE_SUCCESS) { + gst_element_set_state (e, GST_STATE_NULL); + gst_object_unref (GST_OBJECT (e)); + } else { + gst_object_unref (GST_OBJECT (e)); + has_necessary_elements = FALSE; + break; + } + } + } + + suite_add_tcase (s, tc_chain); + if (has_necessary_elements) { + if (is_test_file_available (MP2_STREAM_FILENAME)) + tcase_add_test (tc_chain, test_decode_mpeg1layer2); + if (is_test_file_available (MP3_CBR_STREAM_FILENAME)) + tcase_add_test (tc_chain, test_decode_mpeg1layer3_cbr); + if (is_test_file_available (MP3_VBR_STREAM_FILENAME)) + tcase_add_test (tc_chain, test_decode_mpeg1layer3_vbr); + } + tcase_add_test (tc_chain, test_decode_garbage_mpeg1layer2); + tcase_add_test (tc_chain, test_decode_garbage_mpeg1layer3); + + return s; +} + + +int +main (int argc, char **argv) +{ + int nf; + Suite *s; + SRunner *sr; + + gst_check_init (&argc, &argv); + + s = mpg123audiodec_suite (); + if (s == NULL) + return 0; + + sr = srunner_create (s); + + srunner_run_all (sr, CK_NORMAL); + nf = srunner_ntests_failed (sr); + srunner_free (sr); + + return nf; +} diff --git a/tests/files/cbr_stream.mp3 b/tests/files/cbr_stream.mp3 new file mode 100644 index 0000000000000000000000000000000000000000..b1a5c439d5bd2fb8c7e798cbfbdaeb1f2183cee1 GIT binary patch literal 3135 zcmcK6c~leE9>DR*Og1pVgw3!g>>}c1VU;BW2#W+!s!(fbLV%`9F)S`XY?Dl6k;tkR zS_(lHk&1<4TebR#FvKo^i1KllD}Gpj2U z6acUs%+ZTfc}RcdCs0r-0027+6D0uPDg!VP>(?&>0LJoJc*F|;cuzDxzhwNzrmlPZ zn3lo`$$AHm25D7U zcoOja5bJe)NFvzxMH3O*peP4aH^?u$?>ct}5^}9UZ$QDv%5^w-^;g%rL`h?G?lSMP@xj72IFp5F_~7ZmE>l6`wZ*zgLnV>OJx(VWxz%2gu>i;V8|@FlNi z3ENa&ilIEgBAhn7z~b9KW(5sT!2)22Q?Dnwu?-`;tJu-g{EBz8YVodqx$(NCfUMXk z{K{(VfxS_9FGh-#q&rfXyOf)^Am&wPzMe;BDGghAoVRTd6X<`Pb6BtFp&tcL;8f*r zELM6M%L8136SX=Hm_~Nwcr?DDWEXVCRh(at7tv@O+oH-Ic-Qb|Rx*{%isWs9)8$t~ zKWI!$<6x1fY8Lg5|A{HQAKb6Ea$(*!fgl9!af8V#?vgg_8VHF*;67)M?H9s0_nZ(5 z?Sa4v0L^xl5_cvlB?8AX$4W@fX-k_icOzi4VeLMr;eCxu!!QLi3*HRh_$c>SP` z4Y9Hen_@YHqQlSO#5E8e8HG(7$NOvJoLGbmg!vM&fO*>KAkx@ns199z9-LDbgddzP zVsiDNfx$f?| z(F7tW(M~f+1)XiL6$-2-I7QAQM9pE=G|p1mayUN^96!saQR9L!6hk9Ut7I7x^#Oni zehai&AmPE27M)i=P$+ugcAIssOtFEjh8tWAacwr7FqbqUrIguBG@TGxiME(KRY>=p zw(RX84>?c2#x?xWYG3~9%knCpE}f0&xa7sHTs5Oc6hep}>n`)=l}9eNRX~s*d`8V^ zbe)_kgAY0)p?y-e!V$uA_k%s2iB}l6eEoL68#W++?qvemDA8g!7P-t_QU#qAwPg#A z5Jyf766lrequcaB!sBoem{uP{(OL)-sjN&q0alJ}L~N&Ty@K-`4M9gc*vXDXxXFA= zmVdz|huf5}ZX~?dDa_VE^KmULR&`F3rEY#{0y%8>K6A?JD zMJ9wlGp?H2XgzcDeK^NS%=&4Py}@w=M=zjW41ebznCTaBn=KD!hxXKf(qHn1ecj3U zG~&${9wc{d%g>Up6RyWv6qK1j3=ox?K^5kZhcJ5|Odo`3u(-%c4)1Xq-16ohtXU^E zw!hH1xSdY(c_Z464(}FhGj$IyHV540ixd za2jH70{JM>N@K@3+U3X^2!VGvLz`;cSzS&D7C7uFZ{}viXSJWcxbaTic&gfV{$aC9 z8sbRPh%}loTD-#I!GOBXj>0D#ddp@bhcNBp|6kvrSuXq;^d8u0%i z?Rl{P8Qq#{by;)M@0g53_Z$2n#6Irf9e`o{zO>k}YmuSNZ;W5GilF1yJ81w!N%y1 z`bAIMo5@6s2^58_O@i@+x>cRmjh&~?Sl0!jqV7^;YsY+dxWlGwI zCJ+xbe zhnQauVjodl{Vy$&1$`LfU!bQShrX3E3J_i!zI$QJuOeJZSFdPyH8y!awHNHE`Bj%h zv#N45L~=*mDQ_4ral>rgL6$wvFm(&^o+CE86VdG>UkC;%NeH15q`D)o0weGv>}$0^{>xnz~MJoifa9hTSI&V8JOE zPk{J!w&F}`>+b5@p%U>1A{0=bPUvZxkPqC|{($|2sn$@OuY@-C$nC1_#K$%tFJDXo zAmi&mXUHiND8=|2GKZQ~UKryjq%wZ=ch(U>ZKQyxn1I|kMpbVA?n#rDzI5G{ z`yaJHK0SZFBZUm8Q54+1bHsNh;Mw81Zz{@_y{1R+o{sc8!<_UC9dl`weP5DHF@bg} z(K-gFugqQ2s9GEC8EwpW?{R3Hfa=2h*$kZ$ihxR^c*%n68S{1e8d5Zkw5_5mv2ma8 za@@1noQKWb00;oW#QO=UeRF^guHJ`KqHy6P5G}(iMiHA~(*jMPbR`KZ>7j9ef%LlKZtUgY1ODP+hq>Hm%-_SZa;;6EOc2d5cht~YC*CsYyflo0puHuj zP0w>GxV55~fRp2aYrB1hE5<1Xl5toXy4#Bsi=}9bDdVRh`c~ocdg~3Pzjud(wh{A> zwVl*?V=|>R=n{zGS$gVCpd8Q$iZX&i)MgMW)xpk(gh!!mA?#g#YmaZ}VKmHDmP1*V zSw|_4ydUC)u|)og{Ir8S<3NF;Wr-y{T!YljWi%U_2C<#)&_SD2na(Qr08K)nRF znn3%NsEiS@{s7ju#th;fd*Ii#55kmI(;OhGQc9sk5ERYVmT6Oz_R7gLS{#T`0A4gF z%z$DN!~*)?GG_qHpc7fH6~Z(U0OaIok{m}e_UDanzi-3)XqE^PcbGs0O7uKqE4d7m z)S5&8+3>LELG1hbdCjZR;MJ$|O!}*nZL0>0s`Xwz?A29o&&Yk-ygmz}13(63Ss!Fa zx^x`NYftTI?uw)HHGYn}$x#{mU)d!`3*y)Tp`ihRy}c&TArS31cN)!|-oN2v0+q^f pCm9^OIeP>hICA4F``^&%{V(aiM(F?m literal 0 HcmV?d00001 diff --git a/tests/files/stream.mp2 b/tests/files/stream.mp2 new file mode 100644 index 0000000000000000000000000000000000000000..ab6e900d4df013e35ed4068ca43c0141ba9fa795 GIT binary patch literal 2925 zcmZYBi$Bx*9|v%0O71haIjLcDnYlFgS*|N2p(GV^zl`aKClToaGRBdQ{K-{#5o#w7Y)Y=Rf8=fU_0xA};!) zg<;;Ps3+>}9-uqyG`%uY_cbkA$>JHs16srl+e3Wa%V)Wl3I9Myeg32>@%%Zbzri@hfGXZM zEL7Cx-v$K!cJ?9IuY;`A%WF8aq#D}srft|sHAqcv#bg7hxdlL@hMrvr*2ObOAm03^Rz=p(E)*e8^tbOV!h zXqlSP_S++GC)H4pq5;R@g{pbPL; z^m8)&hQRqHdPsof%7LEyCPK;b?skNI?8k|1Wjyv zjvHa`(WKK)tbl198#o7cKGz;5|`Rd;Lzr ztdnp20fOV#qcK)I;qU?PK&$%F9L?bx74;zsGto+*4!*3W7(jzuFjpnwJ+6B*!+Z@} z>qv{(O!-G2bbcrC_0JS{PkCOZ{RuLXMEk=?t!4i&8`U6@xwKK4i{|kvk^9~#L1)qS zK1gWNIfMIW5pp>fg|Al)h$`d#ai6m1N)GsQ?njoxF~=y&KXLnwQGC6g!mUh)b3p5i zkq%?gZB!$ey(>Sechcmm$Z^rXW}rAgV?^W!EqbIm4F6Aeo7##hb(8f`tQ@{ zBpWKeGg6~qG(=@4`p-FmFY*@85*aOEo!9_mBmkv&uX zx*RW+YiZ*dlw-WcrT2#cfjO7y*J4)|PK9l*6JM1Sj%| zLhT>LimxH`j4{W1X;e_dG{QNiM4$H=92W68Q zt7PpYAQ6r64xFMPFTfn&$O(vt`>y|reB~Q5)ifg6koNY-{t_>~ffL=;-7jSa2to6K z+|-bOvbxs6&#wq6NR+9iPtaW%*PcPb3J8*mlRuHJyXLJ7TYT}IljM=sPJVkss6~qd zIzCJ5EaS+Qbi{;y0i9W$kSagy#{N{;rV~&{5C3{Y63`N(o70qvIgYX;sF~W)WAc$& zq+b-PH{!+zl7z?0FL(e=gXr=FRSH@|*BQ|~#yl>?Uq0FavMTq|#q2QN3HjbPcoDxa zgJtTqS5U8b@vCepR^*d*YJYaS%J|E!6l_52#3$O2_+>C;^(Bi*V> zs5$7IfwOA9)|GVp%Z9%DtS$|`d-K;}A+0Q~Alw8!ro--+fb;-jcOCzg3FlrOR8-#5 zp%aityW{^=at{;u%kiry_c#K ziiWxv;p19j++{U6k%K))0y=Ow#!T?u=-wiJaprs`JWX;tNgcW76wHm2sQ*6-|GRfZ zW`()Er`Dmnm}B2dKnyd-woBy5BEU1x@+4#Bu#~Ij*6Eo^@xZ8n7a0j!!a7-!Qt^UH zSsX^N8#PzPkrH(zKmlT=PN2eYMlT!6Zld?=9HG!2uy%mZuRGmtF>#G|(mV@VOs$uE z3QX^sR6eeJ2X|RY6jrC_*xB|5atmmX)sT^}zx!b{NqKf5uQUK40j-tgb%>ruF9OyjpuC=rF005|AZ;}GXdaEZ z;|_7r^J8xLTetx)^w|Q15bIO!cLJ2+t8`)S;#@itg+@X7cJfEDGP_S#NY^fRG0v;% zdBq00?z^z;wN*IS_4e`27J(S3zDPifV~O_L#CzvR{96aTEZvMZWp_kwMyHT;J7O8y zN&EtWHp10gEy_y^rDm+AOz!+lmKC^07xna7iCxd0h3Z&QifHV zqVDMGJ=P*vVBQlc5ihbr{m#qqfNk1?9iUe9?AS0T3^#CW8%OC0vEFc^2i*3mxrte3 zyX`>=S!lYQ!qFhuZkr0AgI5>h%%N$|*gy^0^=0o?jp^)J%NQF82(*9@j-MNJX(tw3 zDd6WF^y-c$u-k9BW-&w^Y~ST-7gPuS3nN~Qw>_uc5U{< zLfsmYW}(^3t|X1Ki@B@OfXUtVDu#6(qRQyFJ=Qg_(>Gh3MTl%x6LpT+%WoI*c1G?e z!SU<5xB+T=Dn2RLexGgONnI~G%x!t85rv$ub|^Ej>kS^r(xeQ30iE*u@%va`zE<+G zeXAxr`-P>XLsR?w77#Rku+TFtQyW##VX7%F0WIx_99p2LM8f>A26GAfpjLV%q64b! z$}N9$RX%I5n7d`m@+HA_u5wd;ft{oIR67|(zIHWK0ZV>9WA~nRu(dE`XNU%)5qp5= zCBK{X86q1NtG;QD+2hN5X|xmcO7J{Ku+?}h?N*aQu)Uml@ktH&LYS-2xU&~2G}5jx za-PMiOK%p)I=FVJ_z>p*72DFSDPHmZsL43`)bfUzU=m1P@FnuGEI(AHw!L5XZDsjB K?EFA_fUE9D(qlm_WiMN1$MXMmZ$Nl|B)Z$fbr7X&yWt4sj`~%Oo74 zq68EXuTqPEs4ZBOh&&nzO0+yJ;@RRp4FT-d#Vt~;SlpeR95l8N*Jqz+|JeC+p7;HI z=6k#|gHE;f06?TH`iQRt-hu;TC~E)$VBJ?88pt=^^NKv20EU?VEPV0PqvccpD)1_m z>NNn+wV|OOCIP@-VHFf9f$h-H&@c+{!N=I_A`QS6LV5cUgoFo55x`dAc2(d#4#V=Z zb0W$L?ayRaWJHHKMJ#4Nh7N?JD1x=q&E)Lpo2*ZbPwn99|ve|dHXJEecey!tAi zzE}Mj`k1*#)=~=ipJ3C#&JAlbNoU1hQx;Eju4^uI&At4*>lD~n3Fasn%i8S0POGud zoOWE`dXaNN1ef!ke`u(Gh(I8y1&#XsLG)_mY_m7#c=?W8#mLcDamdnUr*KGX;Y!=s zN~8z)SUUAt|86I?dDd%sVj#mVyj?9EzR??Rf1e?2I|cHiAzLJ-t~f*03iVtl&GA2M z;bR)v@|LR!bm*UwLG+C9?U#`TVfKfL>OcR8%?!8b$K~MX&y{Y*Sz6taael_X>&RaH zNP77y+Ff;-?*l4icc^YrE+c$lD#@L|$Xr}CUpd$AKDnp!50=fUT6ePv7)I)zvaesp zy+|c3{XB5_^E)7@)na&lT79n@HFX}zsfMukF~{_j*iLi`?imIu#C^+O<$#)6d~Wg> zeW4l7v={XK9A1ie)shF)gYE6=3+huqTnX@^bP8>8U{v|f(&VF-eLqS!&fttmRfL6k zH_~O2L>-68HOo;OJfF`H2_>B9LA$7ZnJWd$xL$aA0dU1(wimmU?_S|RSt8fIs+z%h z3aNmOqxIsyl_O|^6ow@9f`n&lsr-k}w9(gXzjTkOWVyKWE-hgCnmAZr zbiQGFz`}e?kBE=g>oM1(4scP=fsxZmak2H-i zvpcUdJ<-H5=^?zyA)C|F(xSi{oLjl?USQx6imX;(4U_Hpziv@Fb0dS4!Zdt%_ErMy z&!n<1m^el~PmyWgQVhP$-h&RvaP;8twr#F;&X*2+c+Owj*FKt~q-|0{3s#ahN+%)t zb_wh20;~4qgDobGQ4hv((CN{Nk_|mDqo)IB5CcmS$Cm|%W-|Eo(SAO{^%oQbzXISG zorRx7Lg$oZQ)0Hzc)!lV0n_;ibsRd^45vknZ`S7%(6BpqHBWwh`+f4!(|$f986ffj zf@7V{Vz0T#a z-DL#d$9QpjN$@Os#vshMKlKjDMBL)7EVWtR6a<5qu)QrYlAD&yQ+z6KNAxM^?-@w^ z1_V5Dc60A@j-;_(hta;E2X)Ty?H^b^F1j9grDB{(cB#316u8<--6t(9fnGjPU6bpL zEb}|b-*;?^gIRFdsOe6j`Q*zI0t-NF$w%A@2LXIf1L8T};v0MH+H8+$663l;HqGQ<`RF-bZ|5}OcIj

2B8fhH;`m>%nW2`EE8NGVkwe8?awjaU`D>>98XJhbXC55U;T_ zW2*;`o$fNsbBcZL-Z0+Gg8kA6ANvImSpg)N#rS&NUkb|GRV!dwy6XKkrs;$TM+L~>b5sGK@_TAoBfpg5=;pRVN9dtF6) z9AM(|h=}swQS-p<^lUiiTY7pAe;O9rWwLEawr%FJ3m5< z(_^*=X6o@yx8Kl%ags64FKlytd#8bB7NJwT9u&bB&^Fzx2X4oMHlyz|W6Z4mf4GfK bF?*&En3KHb)pxow1s5aWf8pDI