From 46d86d8005fad242cb987287027f0d608583fb5f Mon Sep 17 00:00:00 2001 From: Wim Taymans Date: Wed, 12 Jul 2006 10:58:42 +0000 Subject: [PATCH] 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. --- ChangeLog | 7 +++ gst-libs/gst/audio/gstringbuffer.c | 118 ++++++++++++++++++++++--------------- 2 files changed, 78 insertions(+), 47 deletions(-) diff --git a/ChangeLog b/ChangeLog index 528b100..99698ff 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2006-07-12 Wim Taymans + + * 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. + 2006-07-12 Edward Hervey * ext/vorbis/vorbisdec.c: (gst_vorbis_dec_init), diff --git a/gst-libs/gst/audio/gstringbuffer.c b/gst-libs/gst/audio/gstringbuffer.c index 15c21ff..aaf2239 100644 --- a/gst-libs/gst/audio/gstringbuffer.c +++ b/gst-libs/gst/audio/gstringbuffer.c @@ -130,55 +130,61 @@ gst_ring_buffer_finalize (GObject * object) G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (ringbuffer)); } -static const int linear_formats[4 * 2 * 2] = { - GST_S8, - GST_S8, - GST_U8, - GST_U8, - GST_S16_LE, - GST_S16_BE, - GST_U16_LE, - GST_U16_BE, - GST_S24_LE, - GST_S24_BE, - GST_U24_LE, - GST_U24_BE, - GST_S32_LE, - GST_S32_BE, - GST_U32_LE, - GST_U32_BE +typedef struct +{ + GstBufferFormat format; + guint8 silence[4]; +} FormatDef; + +static const FormatDef linear_defs[4 * 2 * 2] = { + {GST_S8, {0x00, 0x00, 0x00, 0x00}}, + {GST_S8, {0x00, 0x00, 0x00, 0x00}}, + {GST_U8, {0x80, 0x80, 0x80, 0x80}}, + {GST_U8, {0x80, 0x80, 0x80, 0x80}}, + {GST_S16_LE, {0x00, 0x00, 0x00, 0x00}}, + {GST_S16_BE, {0x00, 0x00, 0x00, 0x00}}, + {GST_U16_LE, {0x00, 0x80, 0x00, 0x80}}, + {GST_U16_BE, {0x80, 0x00, 0x80, 0x00}}, + {GST_S24_LE, {0x00, 0x00, 0x00, 0x00}}, + {GST_S24_BE, {0x00, 0x00, 0x00, 0x00}}, + {GST_U24_LE, {0x00, 0x00, 0x80, 0x00}}, + {GST_U24_BE, {0x80, 0x00, 0x00, 0x00}}, + {GST_S32_LE, {0x00, 0x00, 0x00, 0x00}}, + {GST_S32_BE, {0x00, 0x00, 0x00, 0x00}}, + {GST_U32_LE, {0x00, 0x00, 0x00, 0x80}}, + {GST_U32_BE, {0x80, 0x00, 0x00, 0x00}} }; -static const int linear24_formats[3 * 2 * 2] = { - GST_S24_3LE, - GST_S24_3BE, - GST_U24_3LE, - GST_U24_3BE, - GST_S20_3LE, - GST_S20_3BE, - GST_U20_3LE, - GST_U20_3BE, - GST_S18_3LE, - GST_S18_3BE, - GST_U18_3LE, - GST_U18_3BE, +static const FormatDef linear24_defs[3 * 2 * 2] = { + {GST_S24_3LE, {0x00, 0x00, 0x00, 0x00}}, + {GST_S24_3BE, {0x00, 0x00, 0x00, 0x00}}, + {GST_U24_3LE, {0x00, 0x00, 0x80, 0x00}}, + {GST_U24_3BE, {0x80, 0x00, 0x00, 0x00}}, + {GST_S20_3LE, {0x00, 0x00, 0x00, 0x00}}, + {GST_S20_3BE, {0x00, 0x00, 0x00, 0x00}}, + {GST_U20_3LE, {0x00, 0x00, 0x08, 0x00}}, + {GST_U20_3BE, {0x08, 0x00, 0x00, 0x00}}, + {GST_S18_3LE, {0x00, 0x00, 0x00, 0x00}}, + {GST_S18_3BE, {0x00, 0x00, 0x00, 0x00}}, + {GST_U18_3LE, {0x00, 0x00, 0x02, 0x00}}, + {GST_U18_3BE, {0x02, 0x00, 0x00, 0x00}} }; -static GstBufferFormat +static const FormatDef * build_linear_format (int depth, int width, int unsignd, int big_endian) { - const gint *formats; + const FormatDef *formats; if (width == 24) { switch (depth) { case 24: - formats = &linear24_formats[0]; + formats = &linear24_defs[0]; break; case 20: - formats = &linear24_formats[4]; + formats = &linear24_defs[4]; break; case 18: - formats = &linear24_formats[8]; + formats = &linear24_defs[8]; break; default: return GST_UNKNOWN; @@ -186,16 +192,16 @@ build_linear_format (int depth, int width, int unsignd, int big_endian) } else { switch (depth) { case 8: - formats = &linear_formats[0]; + formats = &linear_defs[0]; break; case 16: - formats = &linear_formats[4]; + formats = &linear_defs[4]; break; case 24: - formats = &linear_formats[8]; + formats = &linear_defs[8]; break; case 32: - formats = &linear_formats[12]; + formats = &linear_defs[12]; break; default: return GST_UNKNOWN; @@ -205,7 +211,8 @@ build_linear_format (int depth, int width, int unsignd, int big_endian) formats += 2; if (big_endian) formats += 1; - return (GstBufferFormat) * formats; + + return formats; } /** @@ -217,6 +224,8 @@ build_linear_format (int depth, int width, int unsignd, int big_endian) void gst_ring_buffer_debug_spec_caps (GstRingBufferSpec * spec) { + gint i, bytes; + GST_DEBUG ("spec caps: %p %" GST_PTR_FORMAT, spec->caps, spec->caps); GST_DEBUG ("parsed caps: type: %d", spec->type); GST_DEBUG ("parsed caps: format: %d", spec->format); @@ -227,6 +236,10 @@ gst_ring_buffer_debug_spec_caps (GstRingBufferSpec * spec) GST_DEBUG ("parsed caps: rate: %d", spec->rate); GST_DEBUG ("parsed caps: channels: %d", spec->channels); GST_DEBUG ("parsed caps: sample bytes: %d", spec->bytes_per_sample); + bytes = (spec->width >> 3) * spec->channels; + for (i = 0; i < bytes; i++) { + GST_DEBUG ("silence byte %d: %02x", i, spec->silence_sample[i]); + } } /** @@ -270,8 +283,15 @@ gst_ring_buffer_parse_caps (GstRingBufferSpec * spec, GstCaps * caps) /* we have to differentiate between int and float formats */ mimetype = gst_structure_get_name (structure); + /* get rate and channels */ + if (!(gst_structure_get_int (structure, "rate", &spec->rate) && + gst_structure_get_int (structure, "channels", &spec->channels))) + goto parse_error; + if (!strncmp (mimetype, "audio/x-raw-int", 15)) { gint endianness; + const FormatDef *def; + gint i, j, bytes; spec->type = GST_BUFTYPE_LINEAR; @@ -291,9 +311,18 @@ gst_ring_buffer_parse_caps (GstRingBufferSpec * spec, GstCaps * caps) spec->bigend = endianness == G_LITTLE_ENDIAN ? FALSE : TRUE; - spec->format = - build_linear_format (spec->depth, spec->width, spec->sign ? 0 : 1, + def = build_linear_format (spec->depth, spec->width, spec->sign ? 0 : 1, spec->bigend ? 1 : 0); + + spec->format = def->format; + + bytes = spec->width >> 3; + + for (i = 0; i < spec->channels; i++) { + for (j = 0; j < bytes; j++) { + spec->silence_sample[i * bytes + j] = def->silence[j]; + } + } } else if (!strncmp (mimetype, "audio/x-raw-float", 17)) { spec->type = GST_BUFTYPE_FLOAT; @@ -329,11 +358,6 @@ gst_ring_buffer_parse_caps (GstRingBufferSpec * spec, GstCaps * caps) goto parse_error; } - /* get rate and channels */ - if (!(gst_structure_get_int (structure, "rate", &spec->rate) && - gst_structure_get_int (structure, "channels", &spec->channels))) - goto parse_error; - spec->bytes_per_sample = (spec->width >> 3) * spec->channels; gst_caps_replace (&spec->caps, caps); -- 2.7.4