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avaudenc: add test for misaligned audio input buffers

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8318>
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Tim-Philipp Müller 2025-01-19 16:19:32 +00:00 committed by GStreamer Marge Bot
parent 9b536630f1
commit f70e2f046c
1 changed files with 53 additions and 0 deletions
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53
subprojects/gst-libav/tests/check/elements/avaudenc.c
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@ -137,6 +137,7 @@ GST_START_TEST (test_audioenc_16_channels)
size = 1024 * GST_AUDIO_INFO_BPF (&info); size = 1024 * GST_AUDIO_INFO_BPF (&info);
in_buf = gst_buffer_new_and_alloc (size); in_buf = gst_buffer_new_and_alloc (size);
gst_buffer_memset (in_buf, 0, 0, size); gst_buffer_memset (in_buf, 0, 0, size);
GST_BUFFER_PTS (in_buf) = 0;
GstFlowReturn ret = gst_harness_push (h, in_buf); GstFlowReturn ret = gst_harness_push (h, in_buf);
fail_if (ret != GST_FLOW_OK); fail_if (ret != GST_FLOW_OK);
@ -146,6 +147,57 @@ GST_START_TEST (test_audioenc_16_channels)
GST_END_TEST; GST_END_TEST;
// Make sure we fix up any too-small memory alignment before feeding data
// to FFmpeg. By default we use the malloc alignment, which might be 16,
// but FFmpeg might be using SIMD operations that require a bigger alignment.
GST_START_TEST (test_audioenc_alignment_fixup)
{
GstHarness *h;
GstAudioInfo info;
GstCaps *caps;
h = gst_harness_new ("avenc_ac3");
fail_unless (h != NULL);
gst_audio_info_set_format (&info, GST_AUDIO_FORMAT_F32, 44100, 1, NULL);
caps = gst_audio_info_to_caps (&info);
gst_harness_set_src_caps (h, caps);
fail_unless_equals_int (GST_AUDIO_INFO_BPF (&info), sizeof (float));
// AC-3 has 1536 samples per frame. Need to supply that many per buffer,
// otherwise the audio encoder baseclass will realloc things via GstAdapter
// and mess up our carefully curated audio buffer (mis)alignment.
# define N_SAMPLES 1536
# define N_ALIGNMENTS 16
const gsize size = N_SAMPLES * sizeof (float);
float *samples = g_newa0 (float, (N_SAMPLES + N_ALIGNMENTS));
guint64 offset = 0;
for (int i = 0; i < 100; ++i) {
GstMemory *mem = gst_memory_new_wrapped (GST_MEMORY_FLAG_READONLY,
samples + (i % N_ALIGNMENTS), size, 0, size,
NULL, NULL);
GstBuffer *in_buf = gst_buffer_new ();
gst_buffer_insert_memory (in_buf, 0, mem);
GST_BUFFER_PTS (in_buf) = gst_util_uint64_scale (offset, GST_SECOND, 44100);
GstFlowReturn ret = gst_harness_push (h, g_steal_pointer (&in_buf));
fail_unless_equals_int (ret, GST_FLOW_OK);
offset += N_SAMPLES;
}
gst_harness_teardown (h);
}
GST_END_TEST;
static Suite * static Suite *
avaudenc_suite (void) avaudenc_suite (void)
{ {
@ -155,6 +207,7 @@ avaudenc_suite (void)
suite_add_tcase (s, tc_chain); suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_audioenc_drain); tcase_add_test (tc_chain, test_audioenc_drain);
tcase_add_test (tc_chain, test_audioenc_16_channels); tcase_add_test (tc_chain, test_audioenc_16_channels);
tcase_add_test (tc_chain, test_audioenc_alignment_fixup);
return s; return s;
} }