From 21bd9a8486db86c6bf8b10d15f1fd32892e57e5e 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/elements/mpg123audiodec.c | 581 ++++++++++++++++++++++++++ 1 file changed, 581 insertions(+) create mode 100644 tests/check/elements/mpg123audiodec.c 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; +}