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gst-libs/gst/audio/gstringbuffer.c: Calculate correct silence samples so we don't fill our ringbuffer with noise.
Original commit message from CVS: * gst-libs/gst/audio/gstringbuffer.c: (build_linear_format), (gst_ring_buffer_debug_spec_caps), (gst_ring_buffer_parse_caps): Calculate correct silence samples so we don't fill our ringbuffer with noise.
This commit is contained in:
Wim Taymans
parent
7b88e03196
commit
46d86d8005
2 changed files with 78 additions and 47 deletions
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@ -1,3 +1,10 @@
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2006-07-12 Wim Taymans <wim@fluendo.com>
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* gst-libs/gst/audio/gstringbuffer.c: (build_linear_format),
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(gst_ring_buffer_debug_spec_caps), (gst_ring_buffer_parse_caps):
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Calculate correct silence samples so we don't fill our ringbuffer
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with noise.
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2006-07-12 Edward Hervey <edward@fluendo.com>
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* ext/vorbis/vorbisdec.c: (gst_vorbis_dec_init),
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@ -130,55 +130,61 @@ gst_ring_buffer_finalize (GObject * object)
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G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (ringbuffer));
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}
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static const int linear_formats[4 * 2 * 2] = {
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GST_S8,
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GST_S8,
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GST_U8,
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GST_U8,
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GST_S16_LE,
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GST_S16_BE,
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GST_U16_LE,
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GST_U16_BE,
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GST_S24_LE,
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GST_S24_BE,
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GST_U24_LE,
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GST_U24_BE,
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GST_S32_LE,
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GST_S32_BE,
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GST_U32_LE,
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GST_U32_BE
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typedef struct
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{
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GstBufferFormat format;
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guint8 silence[4];
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} FormatDef;
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static const FormatDef linear_defs[4 * 2 * 2] = {
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{GST_S8, {0x00, 0x00, 0x00, 0x00}},
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{GST_S8, {0x00, 0x00, 0x00, 0x00}},
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{GST_U8, {0x80, 0x80, 0x80, 0x80}},
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{GST_U8, {0x80, 0x80, 0x80, 0x80}},
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{GST_S16_LE, {0x00, 0x00, 0x00, 0x00}},
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{GST_S16_BE, {0x00, 0x00, 0x00, 0x00}},
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{GST_U16_LE, {0x00, 0x80, 0x00, 0x80}},
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{GST_U16_BE, {0x80, 0x00, 0x80, 0x00}},
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{GST_S24_LE, {0x00, 0x00, 0x00, 0x00}},
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{GST_S24_BE, {0x00, 0x00, 0x00, 0x00}},
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{GST_U24_LE, {0x00, 0x00, 0x80, 0x00}},
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{GST_U24_BE, {0x80, 0x00, 0x00, 0x00}},
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{GST_S32_LE, {0x00, 0x00, 0x00, 0x00}},
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{GST_S32_BE, {0x00, 0x00, 0x00, 0x00}},
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{GST_U32_LE, {0x00, 0x00, 0x00, 0x80}},
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{GST_U32_BE, {0x80, 0x00, 0x00, 0x00}}
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};
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static const int linear24_formats[3 * 2 * 2] = {
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GST_S24_3LE,
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GST_S24_3BE,
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GST_U24_3LE,
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GST_U24_3BE,
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GST_S20_3LE,
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GST_S20_3BE,
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GST_U20_3LE,
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GST_U20_3BE,
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GST_S18_3LE,
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GST_S18_3BE,
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GST_U18_3LE,
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GST_U18_3BE,
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static const FormatDef linear24_defs[3 * 2 * 2] = {
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{GST_S24_3LE, {0x00, 0x00, 0x00, 0x00}},
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{GST_S24_3BE, {0x00, 0x00, 0x00, 0x00}},
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{GST_U24_3LE, {0x00, 0x00, 0x80, 0x00}},
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{GST_U24_3BE, {0x80, 0x00, 0x00, 0x00}},
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{GST_S20_3LE, {0x00, 0x00, 0x00, 0x00}},
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{GST_S20_3BE, {0x00, 0x00, 0x00, 0x00}},
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{GST_U20_3LE, {0x00, 0x00, 0x08, 0x00}},
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{GST_U20_3BE, {0x08, 0x00, 0x00, 0x00}},
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{GST_S18_3LE, {0x00, 0x00, 0x00, 0x00}},
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{GST_S18_3BE, {0x00, 0x00, 0x00, 0x00}},
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{GST_U18_3LE, {0x00, 0x00, 0x02, 0x00}},
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{GST_U18_3BE, {0x02, 0x00, 0x00, 0x00}}
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};
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static GstBufferFormat
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static const FormatDef *
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build_linear_format (int depth, int width, int unsignd, int big_endian)
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{
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const gint *formats;
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const FormatDef *formats;
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if (width == 24) {
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switch (depth) {
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case 24:
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formats = &linear24_formats[0];
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formats = &linear24_defs[0];
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break;
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case 20:
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formats = &linear24_formats[4];
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formats = &linear24_defs[4];
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break;
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case 18:
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formats = &linear24_formats[8];
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formats = &linear24_defs[8];
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break;
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default:
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return GST_UNKNOWN;
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@ -186,16 +192,16 @@ build_linear_format (int depth, int width, int unsignd, int big_endian)
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} else {
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switch (depth) {
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case 8:
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formats = &linear_formats[0];
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formats = &linear_defs[0];
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break;
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case 16:
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formats = &linear_formats[4];
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formats = &linear_defs[4];
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break;
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case 24:
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formats = &linear_formats[8];
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formats = &linear_defs[8];
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break;
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case 32:
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formats = &linear_formats[12];
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formats = &linear_defs[12];
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break;
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default:
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return GST_UNKNOWN;
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@ -205,7 +211,8 @@ build_linear_format (int depth, int width, int unsignd, int big_endian)
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formats += 2;
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if (big_endian)
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formats += 1;
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return (GstBufferFormat) * formats;
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return formats;
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}
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/**
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@ -217,6 +224,8 @@ build_linear_format (int depth, int width, int unsignd, int big_endian)
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void
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gst_ring_buffer_debug_spec_caps (GstRingBufferSpec * spec)
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{
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gint i, bytes;
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GST_DEBUG ("spec caps: %p %" GST_PTR_FORMAT, spec->caps, spec->caps);
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GST_DEBUG ("parsed caps: type: %d", spec->type);
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GST_DEBUG ("parsed caps: format: %d", spec->format);
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@ -227,6 +236,10 @@ gst_ring_buffer_debug_spec_caps (GstRingBufferSpec * spec)
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GST_DEBUG ("parsed caps: rate: %d", spec->rate);
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GST_DEBUG ("parsed caps: channels: %d", spec->channels);
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GST_DEBUG ("parsed caps: sample bytes: %d", spec->bytes_per_sample);
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bytes = (spec->width >> 3) * spec->channels;
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for (i = 0; i < bytes; i++) {
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GST_DEBUG ("silence byte %d: %02x", i, spec->silence_sample[i]);
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}
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}
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/**
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@ -270,8 +283,15 @@ gst_ring_buffer_parse_caps (GstRingBufferSpec * spec, GstCaps * caps)
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/* we have to differentiate between int and float formats */
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mimetype = gst_structure_get_name (structure);
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/* get rate and channels */
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if (!(gst_structure_get_int (structure, "rate", &spec->rate) &&
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gst_structure_get_int (structure, "channels", &spec->channels)))
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goto parse_error;
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if (!strncmp (mimetype, "audio/x-raw-int", 15)) {
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gint endianness;
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const FormatDef *def;
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gint i, j, bytes;
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spec->type = GST_BUFTYPE_LINEAR;
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@ -291,9 +311,18 @@ gst_ring_buffer_parse_caps (GstRingBufferSpec * spec, GstCaps * caps)
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spec->bigend = endianness == G_LITTLE_ENDIAN ? FALSE : TRUE;
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spec->format =
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build_linear_format (spec->depth, spec->width, spec->sign ? 0 : 1,
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def = build_linear_format (spec->depth, spec->width, spec->sign ? 0 : 1,
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spec->bigend ? 1 : 0);
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spec->format = def->format;
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bytes = spec->width >> 3;
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for (i = 0; i < spec->channels; i++) {
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for (j = 0; j < bytes; j++) {
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spec->silence_sample[i * bytes + j] = def->silence[j];
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}
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}
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} else if (!strncmp (mimetype, "audio/x-raw-float", 17)) {
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spec->type = GST_BUFTYPE_FLOAT;
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@ -329,11 +358,6 @@ gst_ring_buffer_parse_caps (GstRingBufferSpec * spec, GstCaps * caps)
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goto parse_error;
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}
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/* get rate and channels */
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if (!(gst_structure_get_int (structure, "rate", &spec->rate) &&
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gst_structure_get_int (structure, "channels", &spec->channels)))
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goto parse_error;
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spec->bytes_per_sample = (spec->width >> 3) * spec->channels;
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gst_caps_replace (&spec->caps, caps);
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