diff -r 29ecd5cb86b3 -r d43ce56a1534 gst_plugins_good/gst/mpegaudioparse/gstxingmux.c
--- a/gst_plugins_good/gst/mpegaudioparse/gstxingmux.c	Tue Jul 06 14:35:10 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,681 +0,0 @@
-/*
- * 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
- * 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.
- */
-
-/* Xing SDK: http://www.mp3-tech.org/programmer/sources/vbrheadersdk.zip */
-
-
-/**
- * SECTION:element-xingmux
- *
- * xingmux adds a Xing header to MP3 files. This contains information about the duration and size
- * of the file and a seek table and is very useful for getting an almost correct duration and better
- * seeking on VBR MP3 files.
- * 
- * This element will remove any existing Xing, LAME or VBRI headers from the beginning of the file.
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch audiotestsrc num-buffers=1000 ! audioconvert ! lame ! xingmux ! filesink location=test.mp3
- * gst-launch filesrc location=test.mp3 ! xingmux ! filesink location=test2.mp3
- * gst-launch filesrc location=test.mp3 ! mp3parse ! xingmux ! filesink location=test2.mp3
- * ]|
- * </refsect2>
- */
-
-#ifdef HAVE_CONFIG_H
-#include "../../config.h"
-#endif
-
-#include <string.h>
-#include "gstxingmux.h"
-
-GST_DEBUG_CATEGORY_STATIC (xing_mux_debug);
-#define GST_CAT_DEFAULT xing_mux_debug
-
-GST_BOILERPLATE (GstXingMux, gst_xing_mux, GstElement, GST_TYPE_ELEMENT);
-
-/* Xing Header stuff */
-#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)
-
-typedef struct _GstXingSeekEntry
-{
-  gint64 timestamp;
-  gint byte;
-} GstXingSeekEntry;
-
-static inline GstXingSeekEntry *
-gst_xing_seek_entry_new ()
-{
-  return g_slice_new (GstXingSeekEntry);
-}
-
-static inline void
-gst_xing_seek_entry_free (GstXingSeekEntry * entry)
-{
-  g_slice_free (GstXingSeekEntry, entry);
-}
-
-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 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) [ 1, 3 ]"));
-
-
-static GstStaticPadTemplate gst_xing_mux_src_template =
-GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("audio/mpeg, "
-        "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 samplerate, bitrate, layer, 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;
-  }
-
-  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;
-
-  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) & 0x3;
-  guint channel_mode = (header >> 6) & 0x3;
-
-  if (mpeg_version == 0x3) {
-    if (channel_mode == 0x3) {
-      return 0x11;
-    } else {
-      return 0x20;
-    }
-  } else {
-    if (channel_mode == 0x3) {
-      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 || memcmp (data, "VBRI", 4) == 0)
-    return TRUE;
-  else
-    return FALSE;
-}
-
-static GstBuffer *
-generate_xing_header (GstXingMux * xing)
-{
-  guint8 *xing_flags;
-  guint32 xing_flags_tmp = 0;
-  GstBuffer *xing_header;
-  guchar *data;
-
-  guint32 header;
-  guint32 header_be;
-  guint size, spf, xing_offset;
-  gulong rate;
-  guint bitrate = 0x00;
-
-  gint64 duration;
-  gint64 byte_count;
-
-  header = xing->first_header;
-
-  /* Set bitrate and choose lowest possible size */
-  do {
-    bitrate++;
-
-    header &= 0xffff0fff;
-    header |= bitrate << 12;
-
-    parse_header (header, &size, &spf, &rate);
-    xing_offset = get_xing_offset (header);
-  } while (size < (4 + xing_offset + 4 + 4 + 4 + 4 + 100) && bitrate < 0xe);
-
-  if (bitrate == 0xe) {
-    GST_ERROR ("No usable bitrate found!");
-    return NULL;
-  }
-
-  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 += xing_offset;
-
-  memcpy (data, "Xing", 4);
-  data += 4;
-
-  xing_flags = 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_tmp |= 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) {
-    guint32 nbytes;
-
-    if (byte_count > G_MAXUINT32) {
-      GST_DEBUG ("Too large stream: %" G_GINT64_FORMAT " > %u bytes",
-          byte_count, G_MAXUINT32);
-    } else {
-      nbytes = byte_count;
-      GST_DEBUG ("Setting number of bytes to %u", nbytes);
-      nbytes = GUINT32_TO_BE (nbytes);
-      memcpy (data, &nbytes, 4);
-      xing_flags_tmp |= GST_XING_BYTES_FIELD;
-      data += 4;
-    }
-  }
-
-  if (xing->seek_table != NULL && byte_count != 0
-      && duration != GST_CLOCK_TIME_NONE) {
-    GList *it;
-    gint percent = 0;
-
-    xing_flags_tmp |= 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 pos;
-      guchar byte;
-
-      while ((entry->timestamp * 100) / duration >= percent) {
-        pos = (entry->byte * 256) / byte_count;
-        GST_DEBUG ("  %d %% -- %" G_GINT64_FORMAT " 1/256", percent, pos);
-        byte = (guchar) pos;
-        memcpy (data, &byte, 1);
-        data++;
-        percent++;
-      }
-    }
-
-    if (percent < 100) {
-      guchar b;
-      gint i;
-
-      memcpy (&b, data - 1, 1);
-
-      for (i = percent; i < 100; i++) {
-        GST_DEBUG ("  %d %% -- %d 1/256", i, b);
-        memcpy (data, &b, 1);
-        data++;
-      }
-    }
-  }
-
-  GST_DEBUG ("Setting Xing flags to 0x%x\n", xing_flags_tmp);
-  xing_flags_tmp = GUINT32_TO_BE (xing_flags_tmp);
-  memcpy (xing_flags, &xing_flags_tmp, 4);
-  return xing_header;
-}
-
-static void
-gst_xing_mux_base_init (gpointer g_class)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
-  static const GstElementDetails gst_xing_mux_details =
-      GST_ELEMENT_DETAILS ("MP3 Xing muxer",
-      "Formatter/Metadata",
-      "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,
-      gst_static_pad_template_get (&gst_xing_mux_sink_template));
-
-  GST_DEBUG_CATEGORY_INIT (xing_mux_debug, "xingmux", 0, "Xing Header Muxer");
-
-  gst_element_class_set_details (element_class, &gst_xing_mux_details);
-}
-
-static void
-gst_xing_mux_class_init (GstXingMuxClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *gstelement_class;
-
-  gobject_class = (GObjectClass *) klass;
-  gstelement_class = (GstElementClass *) klass;
-
-  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_xing_mux_finalize);
-  gstelement_class->change_state =
-      GST_DEBUG_FUNCPTR (gst_xing_mux_change_state);
-}
-
-static void
-gst_xing_mux_finalize (GObject * obj)
-{
-  GstXingMux *xing = GST_XING_MUX (obj);
-
-  if (xing->adapter) {
-    g_object_unref (xing->adapter);
-    xing->adapter = NULL;
-  }
-
-  if (xing->seek_table) {
-    g_list_foreach (xing->seek_table, (GFunc) gst_xing_seek_entry_free, NULL);
-    g_list_free (xing->seek_table);
-    xing->seek_table = NULL;
-  }
-
-  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) gst_xing_seek_entry_free, NULL);
-    g_list_free (xing->seek_table);
-    xing->seek_table = NULL;
-  }
-
-  xing->sent_xing = FALSE;
-}
-
-
-static void
-gst_xing_mux_init (GstXingMux * xing, GstXingMuxClass * xingmux_class)
-{
-  GstElementClass *klass = GST_ELEMENT_CLASS (xingmux_class);
-
-  /* pad through which data comes in to the element */
-  xing->sinkpad =
-      gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
-          "sink"), "sink");
-  gst_pad_set_setcaps_function (xing->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
-  gst_pad_set_chain_function (xing->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_xing_mux_chain));
-  gst_pad_set_event_function (xing->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_xing_mux_sink_event));
-  gst_element_add_pad (GST_ELEMENT (xing), xing->sinkpad);
-
-  /* pad through which data goes out of the element */
-  xing->srcpad =
-      gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
-          "src"), "src");
-  gst_element_add_pad (GST_ELEMENT (xing), xing->srcpad);
-
-  xing->adapter = gst_adapter_new ();
-
-  xing_reset (xing);
-}
-
-static GstFlowReturn
-gst_xing_mux_chain (GstPad * pad, GstBuffer * buffer)
-{
-  GstXingMux *xing = GST_XING_MUX (GST_PAD_PARENT (pad));
-  GstFlowReturn ret = GST_FLOW_OK;
-
-  gst_adapter_push (xing->adapter, buffer);
-
-  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);
-
-        if (xing_header == NULL) {
-          GST_ERROR ("Can't generate Xing header");
-          gst_buffer_unref (outbuf);
-          return GST_FLOW_ERROR;
-        }
-
-        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 = gst_xing_seek_entry_new ();
-    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);
-
-    duration = gst_util_uint64_scale (spf, GST_SECOND, rate);
-
-    GST_BUFFER_TIMESTAMP (outbuf) =
-        (xing->duration == GST_CLOCK_TIME_NONE) ? 0 : xing->duration;
-    GST_BUFFER_DURATION (outbuf) = duration;
-    GST_BUFFER_OFFSET (outbuf) = xing->byte_count;
-    GST_BUFFER_OFFSET_END (outbuf) =
-        xing->byte_count + GST_BUFFER_SIZE (outbuf);
-
-    xing->byte_count += GST_BUFFER_SIZE (outbuf);
-
-    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 ret;
-}
-
-static gboolean
-gst_xing_mux_sink_event (GstPad * pad, GstEvent * event)
-{
-  GstXingMux *xing;
-  gboolean result;
-
-  xing = GST_XING_MUX (gst_pad_get_parent (pad));
-
-  switch (GST_EVENT_TYPE (event)) {
-    case GST_EVENT_NEWSEGMENT:
-      if (xing->sent_xing) {
-        GST_ERROR ("Already sent Xing header, dropping NEWSEGMENT event!");
-        gst_event_unref (event);
-        result = FALSE;
-      } else {
-        GstFormat fmt;
-
-        gst_event_parse_new_segment (event, NULL, NULL, &fmt, NULL, NULL, NULL);
-
-        if (fmt == GST_FORMAT_BYTES) {
-          result = gst_pad_push_event (xing->srcpad, event);
-        } else {
-          gst_event_unref (event);
-
-          event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
-              0, GST_CLOCK_TIME_NONE, 0);
-
-          result = gst_pad_push_event (xing->srcpad, event);
-        }
-      }
-      break;
-
-    case GST_EVENT_EOS:{
-      GstEvent *n_event;
-
-      GST_DEBUG_OBJECT (xing, "handling EOS event");
-
-      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);
-
-          if (header == NULL) {
-            GST_ERROR ("Can't generate Xing header");
-          } else {
-
-            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;
-  }
-  gst_object_unref (GST_OBJECT (xing));
-
-  return result;
-}
-
-
-static GstStateChangeReturn
-gst_xing_mux_change_state (GstElement * element, GstStateChange transition)
-{
-  GstXingMux *xing;
-  GstStateChangeReturn result;
-
-  xing = GST_XING_MUX (element);
-
-  result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_PAUSED_TO_READY:
-      xing_reset (xing);
-      break;
-    default:
-      break;
-  }
-
-  return result;
-}