mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-28 19:20:35 +00:00
gst/xingheader/: Major cleanup and rewrite of xingmux with less bugs and new features:
Original commit message from CVS: * gst/xingheader/Makefile.am: * gst/xingheader/gstxingmux.c: (parse_header), (get_xing_offset), (has_xing_header), (generate_xing_header), (gst_xing_mux_base_init), (gst_xing_mux_finalize), (xing_reset), (gst_xing_mux_init), (gst_xing_mux_chain), (gst_xing_mux_sink_event), (gst_xing_mux_change_state): * gst/xingheader/gstxingmux.h: Major cleanup and rewrite of xingmux with less bugs and new features: - Handles other layers as 3 - Write TOC
This commit is contained in:
Sebastian Dröge
parent
e2d08f0f03
commit
881b80513e
4 changed files with 432 additions and 204 deletions
13
ChangeLog
13
ChangeLog
|
|
@ -1,3 +1,16 @@
|
|||
2008-01-12 Sebastian Dröge <slomo@circular-chaos.org>
|
||||
|
||||
* gst/xingheader/Makefile.am:
|
||||
* gst/xingheader/gstxingmux.c: (parse_header), (get_xing_offset),
|
||||
(has_xing_header), (generate_xing_header),
|
||||
(gst_xing_mux_base_init), (gst_xing_mux_finalize), (xing_reset),
|
||||
(gst_xing_mux_init), (gst_xing_mux_chain),
|
||||
(gst_xing_mux_sink_event), (gst_xing_mux_change_state):
|
||||
* gst/xingheader/gstxingmux.h:
|
||||
Major cleanup and rewrite of xingmux with less bugs and new features:
|
||||
- Handles other layers as 3
|
||||
- Write TOC
|
||||
|
||||
2008-01-11 Tim-Philipp Müller <tim at centricular dot net>
|
||||
|
||||
* tests/check/elements/rganalysis.c: (test_buffer_const_float_mono),
|
||||
|
|
|
|||
|
|
@ -1,12 +1,9 @@
|
|||
|
||||
plugin_LTLIBRARIES = libgstxingheader.la
|
||||
|
||||
libgstxingheader_la_SOURCES = gstxingmux.c
|
||||
libgstxingheader_la_CFLAGS = $(GST_CFLAGS)
|
||||
libgstxingheader_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
|
||||
libgstxingheader_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
|
||||
|
||||
|
||||
noinst_HEADERS = gstxingmux.h
|
||||
|
||||
AM_CFLAGS = $(GST_CFLAGS)
|
||||
LIBS = $(GST_LIBS) $(LAME_LIBS)
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
/*
|
||||
* (c) 2006 Christophe Fergeau <teuf@gnome.org>
|
||||
* Copyright (c) 2006 Christophe Fergeau <teuf@gnome.org>
|
||||
* Copyright (c) 2008 Sebastian Dröge <slomo@circular-chaos.org>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
|
|
@ -17,6 +18,7 @@
|
|||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
/* Xing SDK: http://www.mp3-tech.org/programmer/sources/vbrheadersdk.zip */
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
|
|
@ -31,44 +33,23 @@ GST_DEBUG_CATEGORY_STATIC (xing_mux_debug);
|
|||
GST_BOILERPLATE (GstXingMux, gst_xing_mux, GstElement, GST_TYPE_ELEMENT);
|
||||
|
||||
/* Xing Header stuff */
|
||||
struct _GstXingMuxPriv
|
||||
{
|
||||
GstClockTime duration;
|
||||
guint64 byte_count;
|
||||
GList *seek_table;
|
||||
gboolean flush;
|
||||
};
|
||||
|
||||
#define GST_XING_FRAME_FIELD (1 << 0)
|
||||
#define GST_XING_BYTES_FIELD (1 << 1)
|
||||
#define GST_XING_TOC_FIELD (1 << 2)
|
||||
#define GST_XING_QUALITY_FIELD (1 << 3)
|
||||
|
||||
static const int XING_FRAME_SIZE = 417;
|
||||
|
||||
static void gst_xing_mux_finalize (GObject * obj);
|
||||
static GstStateChangeReturn
|
||||
gst_xing_mux_change_state (GstElement * element, GstStateChange transition);
|
||||
static GstFlowReturn gst_xing_mux_chain (GstPad * pad, GstBuffer * buffer);
|
||||
static gboolean gst_xing_mux_sink_event (GstPad * pad, GstEvent * event);
|
||||
|
||||
|
||||
static void
|
||||
gst_xing_mux_finalize (GObject * obj)
|
||||
{
|
||||
GstXingMux *xing = GST_XING_MUX (obj);
|
||||
|
||||
g_free (xing->priv);
|
||||
xing->priv = NULL;
|
||||
G_OBJECT_CLASS (parent_class)->finalize (obj);
|
||||
}
|
||||
|
||||
|
||||
static GstStaticPadTemplate gst_xing_mux_sink_template =
|
||||
GST_STATIC_PAD_TEMPLATE ("sink",
|
||||
GST_PAD_SINK,
|
||||
GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS ("audio/mpeg, "
|
||||
"mpegversion = (int) 1, " "layer = (int) 3"));
|
||||
"mpegversion = (int) 1, " "layer = (int) [ 1, 3 ]"));
|
||||
|
||||
|
||||
static GstStaticPadTemplate gst_xing_mux_src_template =
|
||||
|
|
@ -76,8 +57,270 @@ GST_STATIC_PAD_TEMPLATE ("src",
|
|||
GST_PAD_SRC,
|
||||
GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS ("audio/mpeg, "
|
||||
"mpegversion = (int) 1, " "layer = (int) 3"));
|
||||
"mpegversion = (int) 1, " "layer = (int) [ 1, 3 ]"));
|
||||
static const guint mp3types_bitrates[2][3][16] = {
|
||||
{
|
||||
{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
|
||||
{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
|
||||
{0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}
|
||||
},
|
||||
{
|
||||
{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
|
||||
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
|
||||
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}
|
||||
},
|
||||
};
|
||||
|
||||
static const guint mp3types_freqs[3][3] = { {44100, 48000, 32000},
|
||||
{22050, 24000, 16000},
|
||||
{11025, 12000, 8000}
|
||||
};
|
||||
|
||||
static gboolean
|
||||
parse_header (guint32 header, guint * ret_size, guint * ret_spf,
|
||||
gulong * ret_rate)
|
||||
{
|
||||
guint length, spf;
|
||||
gulong mode, samplerate, bitrate, layer, channels, padding;
|
||||
gint lsf, mpg25;
|
||||
|
||||
if ((header & 0xffe00000) != 0xffe00000) {
|
||||
g_warning ("invalid sync");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (((header >> 19) & 3) == 0x01) {
|
||||
g_warning ("invalid MPEG version");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (((header >> 17) & 3) == 0x00) {
|
||||
g_warning ("invalid MPEG layer");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (((header >> 12) & 0xf) == 0xf || ((header >> 12) & 0xf) == 0x0) {
|
||||
g_warning ("invalid bitrate");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (((header >> 10) & 0x3) == 0x3) {
|
||||
g_warning ("invalid sampling rate");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (header & 0x00000002) {
|
||||
g_warning ("invalid emphasis");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (header & (1 << 20)) {
|
||||
lsf = (header & (1 << 19)) ? 0 : 1;
|
||||
mpg25 = 0;
|
||||
} else {
|
||||
lsf = 1;
|
||||
mpg25 = 1;
|
||||
}
|
||||
|
||||
if (header & (1 << 20)) {
|
||||
lsf = (header & (1 << 19)) ? 0 : 1;
|
||||
mpg25 = 0;
|
||||
} else {
|
||||
lsf = 1;
|
||||
mpg25 = 1;
|
||||
}
|
||||
|
||||
layer = 4 - ((header >> 17) & 0x3);
|
||||
|
||||
bitrate = (header >> 12) & 0xF;
|
||||
bitrate = mp3types_bitrates[lsf][layer - 1][bitrate] * 1000;
|
||||
if (bitrate == 0)
|
||||
return 0;
|
||||
|
||||
samplerate = (header >> 10) & 0x3;
|
||||
samplerate = mp3types_freqs[lsf + mpg25][samplerate];
|
||||
|
||||
padding = (header >> 9) & 0x1;
|
||||
|
||||
mode = (header >> 6) & 0x3;
|
||||
channels = (mode == 3) ? 1 : 2;
|
||||
|
||||
switch (layer) {
|
||||
case 1:
|
||||
length = 4 * ((bitrate * 12) / samplerate + padding);
|
||||
break;
|
||||
case 2:
|
||||
length = (bitrate * 144) / samplerate + padding;
|
||||
break;
|
||||
default:
|
||||
case 3:
|
||||
length = (bitrate * 144) / (samplerate << lsf) + padding;
|
||||
break;
|
||||
}
|
||||
|
||||
if (layer == 1)
|
||||
spf = 384;
|
||||
else if (layer == 2 || lsf == 0)
|
||||
spf = 1152;
|
||||
else
|
||||
spf = 576;
|
||||
|
||||
if (ret_size)
|
||||
*ret_size = length;
|
||||
if (ret_spf)
|
||||
*ret_spf = spf;
|
||||
if (ret_rate)
|
||||
*ret_rate = samplerate;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static guint
|
||||
get_xing_offset (guint32 header)
|
||||
{
|
||||
guint mpeg_version = (header >> 19) & 3;
|
||||
guint channel_mode = (header >> 6) & 0x3;
|
||||
|
||||
if (mpeg_version == 0x11) {
|
||||
if (channel_mode == 0x11) {
|
||||
return 0x11;
|
||||
} else {
|
||||
return 0x20;
|
||||
}
|
||||
} else {
|
||||
if (channel_mode == 0x11) {
|
||||
return 0x09;
|
||||
} else {
|
||||
return 0x11;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
has_xing_header (guint32 header, guchar * data, gsize size)
|
||||
{
|
||||
data += 4;
|
||||
data += get_xing_offset (header);
|
||||
|
||||
if (memcmp (data, "Xing", 4) == 0 || memcmp (data, "Info", 4) == 0)
|
||||
return TRUE;
|
||||
else
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static GstBuffer *
|
||||
generate_xing_header (GstXingMux * xing)
|
||||
{
|
||||
guint32 *xing_flags;
|
||||
GstBuffer *xing_header;
|
||||
guchar *data;
|
||||
|
||||
guint32 header;
|
||||
guint32 header_be;
|
||||
guint size, spf;
|
||||
gulong rate;
|
||||
|
||||
gint64 duration;
|
||||
gint64 byte_count;
|
||||
|
||||
header = xing->first_header;
|
||||
/* Set bitrate */
|
||||
/* TODO: Choose smallest possible value */
|
||||
header &= 0xffff0fff;
|
||||
header |= 0xa << 12; /* 0101b */
|
||||
|
||||
parse_header (header, &size, &spf, &rate);
|
||||
|
||||
if (gst_pad_alloc_buffer_and_set_caps (xing->srcpad, 0, size,
|
||||
GST_PAD_CAPS (xing->srcpad), &xing_header) != GST_FLOW_OK) {
|
||||
xing_header = gst_buffer_new_and_alloc (size);
|
||||
gst_buffer_set_caps (xing_header, GST_PAD_CAPS (xing->srcpad));
|
||||
}
|
||||
|
||||
data = GST_BUFFER_DATA (xing_header);
|
||||
memset (data, 0, size);
|
||||
header_be = GUINT32_TO_BE (header);
|
||||
memcpy (data, &header_be, 4);
|
||||
|
||||
data += 4;
|
||||
data += get_xing_offset (header);
|
||||
|
||||
memcpy (data, "Xing", 4);
|
||||
data += 4;
|
||||
|
||||
xing_flags = (guint32 *) data;
|
||||
data += 4;
|
||||
|
||||
if (xing->duration != GST_CLOCK_TIME_NONE) {
|
||||
duration = xing->duration;
|
||||
} else {
|
||||
GstFormat fmt = GST_FORMAT_TIME;
|
||||
|
||||
if (!gst_pad_query_peer_duration (xing->sinkpad, &fmt, &duration))
|
||||
duration = GST_CLOCK_TIME_NONE;
|
||||
}
|
||||
|
||||
if (duration != GST_CLOCK_TIME_NONE) {
|
||||
guint32 number_of_frames;
|
||||
|
||||
/* The Xing Header contains a NumberOfFrames field, which verifies to:
|
||||
* Duration = NumberOfFrames *SamplesPerFrame/SamplingRate
|
||||
* SamplesPerFrame and SamplingRate are values for the current frame.
|
||||
*/
|
||||
number_of_frames = gst_util_uint64_scale (duration, rate, GST_SECOND) / spf;
|
||||
GST_DEBUG ("Setting number of frames to %u", number_of_frames);
|
||||
number_of_frames = GUINT32_TO_BE (number_of_frames);
|
||||
memcpy (data, &number_of_frames, 4);
|
||||
*xing_flags |= GST_XING_FRAME_FIELD;
|
||||
data += 4;
|
||||
}
|
||||
|
||||
if (xing->byte_count != 0) {
|
||||
byte_count = xing->byte_count;
|
||||
} else {
|
||||
GstFormat fmt = GST_FORMAT_BYTES;
|
||||
|
||||
if (!gst_pad_query_peer_duration (xing->sinkpad, &fmt, &byte_count))
|
||||
byte_count = 0;
|
||||
if (byte_count == -1)
|
||||
byte_count = 0;
|
||||
}
|
||||
|
||||
if (byte_count != 0) {
|
||||
GST_DEBUG ("Setting number of bytes to %u", byte_count);
|
||||
byte_count = GUINT32_TO_BE (byte_count);
|
||||
memcpy (data, &byte_count, 4);
|
||||
*xing_flags |= GST_XING_BYTES_FIELD;
|
||||
data += 4;
|
||||
byte_count = GUINT32_FROM_BE (byte_count);
|
||||
}
|
||||
|
||||
if (xing->seek_table != NULL && byte_count != 0
|
||||
&& duration != GST_CLOCK_TIME_NONE) {
|
||||
GList *it;
|
||||
gint percent = 0;
|
||||
|
||||
*xing_flags |= GST_XING_TOC_FIELD;
|
||||
|
||||
GST_DEBUG ("Writing seek table");
|
||||
for (it = xing->seek_table; it != NULL && percent < 100; it = it->next) {
|
||||
GstXingSeekEntry *entry = (GstXingSeekEntry *) it->data;
|
||||
gint64 byte;
|
||||
|
||||
if ((entry->timestamp * 100) / duration >= percent) {
|
||||
byte = (entry->byte * 256) / byte_count;
|
||||
GST_DEBUG (" %d %% -- %d 1/256", percent, byte);
|
||||
*data = byte;
|
||||
data++;
|
||||
percent++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
GST_DEBUG ("Setting Xing flags to 0x%x\n", *xing_flags);
|
||||
*xing_flags = GUINT32_TO_BE (*xing_flags);
|
||||
return xing_header;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_xing_mux_base_init (gpointer g_class)
|
||||
|
|
@ -90,7 +333,6 @@ gst_xing_mux_base_init (gpointer g_class)
|
|||
"Adds a Xing header to the beginning of a VBR MP3 file",
|
||||
"Christophe Fergeau <teuf@gnome.org>");
|
||||
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&gst_xing_mux_src_template));
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
|
|
@ -113,14 +355,35 @@ gst_xing_mux_class_init (GstXingMuxClass * klass)
|
|||
}
|
||||
|
||||
static void
|
||||
xing_set_flush (GstXingMux * xing, gboolean flush)
|
||||
gst_xing_mux_finalize (GObject * obj)
|
||||
{
|
||||
if (xing->priv == NULL) {
|
||||
return;
|
||||
GstXingMux *xing = GST_XING_MUX (obj);
|
||||
|
||||
if (xing->adapter) {
|
||||
g_object_unref (xing->adapter);
|
||||
xing->adapter = NULL;
|
||||
}
|
||||
xing->priv->flush = flush;
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->finalize (obj);
|
||||
}
|
||||
|
||||
static void
|
||||
xing_reset (GstXingMux * xing)
|
||||
{
|
||||
xing->duration = GST_CLOCK_TIME_NONE;
|
||||
xing->byte_count = 0;
|
||||
|
||||
gst_adapter_clear (xing->adapter);
|
||||
|
||||
if (xing->seek_table) {
|
||||
g_list_foreach (xing->seek_table, (GFunc) g_free, NULL);
|
||||
xing->seek_table = NULL;
|
||||
}
|
||||
|
||||
xing->sent_xing = FALSE;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
gst_xing_mux_init (GstXingMux * xing, GstXingMuxClass * xingmux_class)
|
||||
{
|
||||
|
|
@ -144,156 +407,92 @@ gst_xing_mux_init (GstXingMux * xing, GstXingMuxClass * xingmux_class)
|
|||
"src"), "src");
|
||||
gst_element_add_pad (GST_ELEMENT (xing), xing->srcpad);
|
||||
|
||||
xing->priv = g_malloc0 (sizeof (GstXingMuxPriv));
|
||||
xing_set_flush (xing, TRUE);
|
||||
xing->priv->duration = GST_CLOCK_TIME_NONE;
|
||||
xing->adapter = gst_adapter_new ();
|
||||
|
||||
}
|
||||
|
||||
G_GNUC_UNUSED static void
|
||||
xing_update_data (GstXingMux * xing, gint bytes, guint64 duration)
|
||||
{
|
||||
if (xing->priv == NULL) {
|
||||
return;
|
||||
}
|
||||
xing->priv->byte_count += bytes;
|
||||
|
||||
if (duration == GST_CLOCK_TIME_NONE) {
|
||||
return;
|
||||
}
|
||||
if (xing->priv->duration == GST_CLOCK_TIME_NONE) {
|
||||
xing->priv->duration = duration;
|
||||
} else {
|
||||
xing->priv->duration += duration;
|
||||
}
|
||||
}
|
||||
|
||||
static GstBuffer *
|
||||
xing_generate_header (GstXingMux * xing)
|
||||
{
|
||||
guint32 xing_flags;
|
||||
GstBuffer *header;
|
||||
guint32 *data;
|
||||
|
||||
/* Dummy header that we will stick at the beginning of our frame
|
||||
*
|
||||
* 0xffe => synchronization bits
|
||||
* 0x1b => 11010b (11b == MPEG1 | 01b == Layer III | 0b == no CRC)
|
||||
* 0x9 => 128kbps
|
||||
* 0x00 => 00b == 44100 Hz | 0b == no padding | 0b == private bit
|
||||
* 0x44 => 0010b 0010b (00b == stereo | 10b == (unused) mode extension)
|
||||
* (0b == no copyright bit | 0b == original bit)
|
||||
* (00b == no emphasis)
|
||||
*
|
||||
* Such a frame (MPEG1 Layer III) contains 1152 samples, its size is thus:
|
||||
* (1152*(128000/8))/44100 = 417.96 rounded to the next smaller integer, i.e.
|
||||
* 417.
|
||||
*
|
||||
* There are also 32 bytes (ie 8 32 bits values) to skip after the header
|
||||
* for such frames
|
||||
*/
|
||||
const guint8 mp3_header[4] = { 0xff, 0xfb, 0x90, 0x44 };
|
||||
const int SIDE_INFO_SIZE = 32 / sizeof (guint32);
|
||||
|
||||
header = gst_buffer_new_and_alloc (XING_FRAME_SIZE);
|
||||
|
||||
data = (guint32 *) GST_BUFFER_DATA (header);
|
||||
memset (data, 0, XING_FRAME_SIZE);
|
||||
memcpy (data, mp3_header, 4);
|
||||
memcpy (&data[8 + 1], "Xing", 4);
|
||||
|
||||
xing_flags = 0;
|
||||
if (xing->priv->duration != GST_CLOCK_TIME_NONE) {
|
||||
guint32 number_of_frames;
|
||||
|
||||
/* The Xing Header contains a NumberOfFrames field, which verifies to:
|
||||
* Duration = NumberOfFrames *SamplesPerFrame/SamplingRate
|
||||
* SamplesPerFrame and SamplingRate are values for the current frame,
|
||||
* ie 1152 and 44100 in our case.
|
||||
*/
|
||||
|
||||
/* FIXME: Better count the actual number of frames as the calculation
|
||||
* below introduces rounding errors
|
||||
*/
|
||||
number_of_frames = gst_util_uint64_scale (xing->priv->duration, 44100,
|
||||
GST_SECOND) / 1152;
|
||||
data[SIDE_INFO_SIZE + 3] = GUINT32_TO_BE (number_of_frames);
|
||||
|
||||
xing_flags |= GST_XING_FRAME_FIELD;
|
||||
}
|
||||
|
||||
if (xing->priv->byte_count != 0) {
|
||||
xing_flags |= GST_XING_BYTES_FIELD;
|
||||
data[SIDE_INFO_SIZE + 4] = GUINT32_TO_BE (xing->priv->byte_count);
|
||||
}
|
||||
|
||||
/* TODO: Un-#ifdef when it's implemented :) xing code in VbrTag.c looks like
|
||||
* it could be stolen
|
||||
*/
|
||||
#if 0
|
||||
if (xing->priv->seek_table != NULL) {
|
||||
GList *it;
|
||||
|
||||
xing_flags |= GST_XING_TOC_FIELD;
|
||||
for (it = xing->priv->seek_table; it != NULL; it = it->next) {
|
||||
/* do something */
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
data[SIDE_INFO_SIZE + 2] = GUINT32_TO_BE (xing_flags);
|
||||
gst_buffer_set_caps (header, GST_PAD_CAPS (xing->srcpad));
|
||||
// gst_util_dump_mem ((guchar *)data, XING_FRAME_SIZE);
|
||||
return header;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
xing_ready_to_flush (GstXingMux * xing)
|
||||
{
|
||||
if (xing->priv == NULL) {
|
||||
return FALSE;
|
||||
}
|
||||
return xing->priv->flush;
|
||||
}
|
||||
|
||||
static void
|
||||
xing_push_header (GstXingMux * xing)
|
||||
{
|
||||
GstBuffer *header;
|
||||
GstEvent *event;
|
||||
|
||||
/* FIXME: should actually be after any ID3v2/APE tags and before the real
|
||||
* MP3 frames.
|
||||
*/
|
||||
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
|
||||
0, GST_CLOCK_TIME_NONE, 0);
|
||||
|
||||
if (G_UNLIKELY (!gst_pad_push_event (xing->srcpad, event))) {
|
||||
GST_WARNING ("Failed to seek to position 0 for pushing the Xing header");
|
||||
return;
|
||||
}
|
||||
|
||||
header = xing_generate_header (xing);
|
||||
xing_set_flush (xing, FALSE);
|
||||
GST_INFO ("Writing real Xing header to beginning of stream");
|
||||
gst_pad_push (xing->srcpad, header);
|
||||
xing_reset (xing);
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_xing_mux_chain (GstPad * pad, GstBuffer * buffer)
|
||||
{
|
||||
GstXingMux *xing = GST_XING_MUX (GST_OBJECT_PARENT (pad));
|
||||
GstXingMux *xing = GST_XING_MUX (GST_PAD_PARENT (pad));
|
||||
GstFlowReturn ret = GST_FLOW_OK;
|
||||
|
||||
xing_update_data (xing, GST_BUFFER_SIZE (buffer),
|
||||
GST_BUFFER_DURATION (buffer));
|
||||
gst_adapter_push (xing->adapter, buffer);
|
||||
|
||||
if (xing_ready_to_flush (xing)) {
|
||||
GST_INFO ("Writing empty Xing header to stream");
|
||||
gst_pad_push (xing->srcpad, xing_generate_header (xing));
|
||||
xing_set_flush (xing, FALSE);
|
||||
while (gst_adapter_available (xing->adapter) >= 4) {
|
||||
const guchar *data = gst_adapter_peek (xing->adapter, 4);
|
||||
guint32 header;
|
||||
GstBuffer *outbuf;
|
||||
GstClockTime duration;
|
||||
guint size, spf;
|
||||
gulong rate;
|
||||
GstXingSeekEntry *seek_entry;
|
||||
|
||||
header = GST_READ_UINT32_BE (data);
|
||||
|
||||
if (!parse_header (header, &size, &spf, &rate)) {
|
||||
GST_DEBUG ("Lost sync, resyncing");
|
||||
gst_adapter_flush (xing->adapter, 1);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (gst_adapter_available (xing->adapter) < size)
|
||||
break;
|
||||
|
||||
outbuf = gst_adapter_take_buffer (xing->adapter, size);
|
||||
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (xing->srcpad));
|
||||
|
||||
if (!xing->sent_xing) {
|
||||
if (has_xing_header (header, GST_BUFFER_DATA (outbuf), size)) {
|
||||
GST_LOG_OBJECT (xing, "Dropping old Xing header");
|
||||
gst_buffer_unref (outbuf);
|
||||
continue;
|
||||
} else {
|
||||
GstBuffer *xing_header;
|
||||
guint64 xing_header_size;
|
||||
|
||||
xing->first_header = header;
|
||||
|
||||
xing_header = generate_xing_header (xing);
|
||||
xing_header_size = GST_BUFFER_SIZE (xing_header);
|
||||
|
||||
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, xing_header))) {
|
||||
GST_ERROR_OBJECT (xing, "Failed to push Xing header: %s",
|
||||
gst_flow_get_name (ret));
|
||||
gst_buffer_unref (xing_header);
|
||||
gst_buffer_unref (outbuf);
|
||||
return ret;
|
||||
}
|
||||
|
||||
xing->byte_count += xing_header_size;
|
||||
xing->sent_xing = TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
seek_entry = g_new (GstXingSeekEntry, 1);
|
||||
seek_entry->timestamp =
|
||||
(xing->duration == GST_CLOCK_TIME_NONE) ? 0 : xing->duration;
|
||||
/* Workaround for parsers checking that the first seek table entry is 0 */
|
||||
seek_entry->byte = (seek_entry->timestamp == 0) ? 0 : xing->byte_count;
|
||||
xing->seek_table = g_list_append (xing->seek_table, seek_entry);
|
||||
|
||||
xing->byte_count += GST_BUFFER_SIZE (outbuf);
|
||||
|
||||
duration = gst_util_uint64_scale (spf, GST_SECOND, rate);
|
||||
if (xing->duration == GST_CLOCK_TIME_NONE)
|
||||
xing->duration = duration;
|
||||
else
|
||||
xing->duration += duration;
|
||||
|
||||
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, outbuf))) {
|
||||
GST_ERROR_OBJECT (xing, "Failed to push MP3 frame: %s",
|
||||
gst_flow_get_name (ret));
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
return gst_pad_push (xing->srcpad, buffer);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
@ -307,38 +506,45 @@ gst_xing_mux_sink_event (GstPad * pad, GstEvent * event)
|
|||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_NEWSEGMENT:
|
||||
{
|
||||
gboolean update;
|
||||
gdouble rate;
|
||||
GstFormat format;
|
||||
gint64 value, end_value, base;
|
||||
if (xing->sent_xing) {
|
||||
GST_ERROR ("Already sent Xing header, dropping NEWSEGMENT event!");
|
||||
|
||||
gst_event_parse_new_segment (event, &update, &rate, &format,
|
||||
&value, &end_value, &base);
|
||||
gst_event_unref (event);
|
||||
if (format == GST_FORMAT_BYTES && gst_pad_is_linked (xing->srcpad)) {
|
||||
GstEvent *new_event;
|
||||
|
||||
GST_INFO ("Adjusting NEW_SEGMENT event by %d", XING_FRAME_SIZE);
|
||||
value += XING_FRAME_SIZE;
|
||||
if (end_value != -1) {
|
||||
end_value += XING_FRAME_SIZE;
|
||||
}
|
||||
|
||||
new_event = gst_event_new_new_segment (update, rate, format,
|
||||
value, end_value, base);
|
||||
result = gst_pad_push_event (xing->srcpad, new_event);
|
||||
} else {
|
||||
gst_event_unref (event);
|
||||
result = FALSE;
|
||||
} else {
|
||||
result = gst_pad_push_event (xing->srcpad, event);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case GST_EVENT_EOS:
|
||||
case GST_EVENT_EOS:{
|
||||
GstEvent *n_event;
|
||||
|
||||
GST_DEBUG_OBJECT (xing, "handling EOS event");
|
||||
xing_push_header (xing);
|
||||
|
||||
if (xing->sent_xing) {
|
||||
|
||||
n_event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
|
||||
0, GST_CLOCK_TIME_NONE, 0);
|
||||
|
||||
if (G_UNLIKELY (!gst_pad_push_event (xing->srcpad, n_event))) {
|
||||
GST_WARNING
|
||||
("Failed to seek to position 0 for pushing the Xing header");
|
||||
} else {
|
||||
GstBuffer *header;
|
||||
GstFlowReturn ret;
|
||||
|
||||
header = generate_xing_header (xing);
|
||||
|
||||
GST_INFO ("Writing real Xing header to beginning of stream");
|
||||
|
||||
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, header)))
|
||||
GST_WARNING ("Failed to push updated Xing header: %s\n",
|
||||
gst_flow_get_name (ret));
|
||||
}
|
||||
}
|
||||
result = gst_pad_push_event (xing->srcpad, event);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
result = gst_pad_event_default (pad, event);
|
||||
break;
|
||||
|
|
@ -361,8 +567,7 @@ gst_xing_mux_change_state (GstElement * element, GstStateChange transition)
|
|||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
memset (xing->priv, 0, sizeof (GstXingMuxPriv));
|
||||
xing_set_flush (xing, TRUE);
|
||||
xing_reset (xing);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
/*
|
||||
* (c) 2006 Christophe Fergeau <teuf@gnome.org>
|
||||
* Copyright (c) 2006 Christophe Fergeau <teuf@gnome.org>
|
||||
* Copyright (c) 2008 Sebastian Dröge <slomo@circular-chaos.org>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
|
|
@ -18,17 +19,29 @@
|
|||
*/
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/base/gstadapter.h>
|
||||
|
||||
typedef struct _GstXingMuxPriv GstXingMuxPriv;
|
||||
typedef struct _GstXingSeekEntry
|
||||
{
|
||||
gint64 timestamp;
|
||||
gint byte;
|
||||
} GstXingSeekEntry;
|
||||
|
||||
/* Definition of structure storing data for this element. */
|
||||
typedef struct _GstXingMux {
|
||||
GstElement element;
|
||||
|
||||
GstPad *sinkpad, *srcpad;
|
||||
|
||||
GstXingMuxPriv *priv;
|
||||
|
||||
GstAdapter *adapter;
|
||||
GstClockTime duration;
|
||||
guint64 byte_count;
|
||||
guint64 frame_count;
|
||||
GList *seek_table;
|
||||
gboolean sent_xing;
|
||||
|
||||
/* Copy of the first frame header */
|
||||
guint32 first_header;
|
||||
} GstXingMux;
|
||||
|
||||
/* Standard definition defining a class for this element. */
|
||||
|
|
|
|||
Loading…
Reference in a new issue