mp4_utils.c

BHE的解码程序

/*
 * some functions for MP4 files
*/

#include "mp4ff.h"
#include "faad.h"

#include <gtk/gtk.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <xmms/plugin.h>
#include <xmms/titlestring.h>
#include <xmms/util.h>

const char *mp4AudioNames[]=
  {
    "MPEG-1 Audio Layers 1,2 or 3",
    "MPEG-2 low biterate (MPEG-1 extension) - MP3",
    "MPEG-2 AAC Main Profile",
    "MPEG-2 AAC Low Complexity profile",
    "MPEG-2 AAC SSR profile",
    "MPEG-4 audio (MPEG-4 AAC)",
    0
  };

/* MPEG-4 Audio types from 14496-3 Table 1.5.1 (from mp4.h)*/
const char *mpeg4AudioNames[]=
  {
    "!!!!MPEG-4 Audio track Invalid !!!!!!!",
    "MPEG-4 AAC Main profile",
    "MPEG-4 AAC Low Complexity profile",
    "MPEG-4 AAC SSR profile",
    "MPEG-4 AAC Long Term Prediction profile",
    "MPEG-4 AAC Scalable",
    "MPEG-4 CELP",
    "MPEG-4 HVXC",
    "MPEG-4 Text To Speech",
    "MPEG-4 Main Synthetic profile",
    "MPEG-4 Wavetable Synthesis profile",
    "MPEG-4 MIDI Profile",
    "MPEG-4 Algorithmic Synthesis and Audio FX profile"
  };

static GtkWidget *mp4_info_dialog = NULL;

/*
 * find AAC track
*/

int getAACTrack(mp4ff_t *infile)
{
  int i, rc;
  int numTracks = mp4ff_total_tracks(infile);

  printf("total-tracks: %d\n", numTracks);
  for(i=0; i<numTracks; i++){
    unsigned char*	buff = 0;
    int			buff_size = 0;
    mp4AudioSpecificConfig mp4ASC;

    printf("testing-track: %d\n", i);
    mp4ff_get_decoder_config(infile, i, &buff, &buff_size);
    if(buff){
      rc = NeAACDecAudioSpecificConfig(buff, buff_size, &mp4ASC);
      g_free(buff);
      if(rc < 0)
	continue;
      return(i);
    }
  }
  return(-1);
}

uint32_t read_callback(void *user_data, void *buffer, uint32_t length)
{
  return fread(buffer, 1, length, (FILE*)user_data);
}

uint32_t seek_callback(void *user_data, uint64_t position)
{
  return fseek((FILE*)user_data, position, SEEK_SET);
}

mp4ff_callback_t *getMP4FF_cb(FILE *mp4file)
{
  mp4ff_callback_t* mp4cb = malloc(sizeof(mp4ff_callback_t));
  mp4cb->read = read_callback;
  mp4cb->seek = seek_callback;
  mp4cb->user_data = mp4file;
  return mp4cb;
}

/*
 * Function to display an info box for an mp4 file.
 * This code is based heavily on fileinfo.c from the xmms mpg123
 * plugin, and the info box layout mimics that plugin.
*/
void create_mp4_info_dialog (char *filename, FILE *mp4file, mp4ff_t *infile, gint mp4track)
{
  char *window_title, *value, *value2;
  static GtkWidget *filename_entry, *title_entry, *artist_entry, *album_entry;
  static GtkWidget *genre_entry, *year_entry, *track_entry, *comment_entry;
  static GtkWidget *mp4_info_label;

  if (!mp4_info_dialog)
  {
    GtkWidget *dialog_vbox1, *vbox1, *hbox2, *hbox3, *hbox4;
    GtkWidget *frame2, *frame3, *table1, *dialog_action_area1;
    GtkWidget *filename_label, *title_label, *artist_label, *album_label;
    GtkWidget *genre_label, *year_label, *track_label, *comment_label;
    GtkWidget *close_button;

    mp4_info_dialog = gtk_dialog_new ();
    gtk_object_set_data (GTK_OBJECT (mp4_info_dialog), "mp4_info_dialog", mp4_info_dialog);
    gtk_window_set_policy (GTK_WINDOW (mp4_info_dialog), TRUE, TRUE, FALSE);
    gtk_signal_connect(GTK_OBJECT (mp4_info_dialog), "destroy",
                                   gtk_widget_destroyed, &mp4_info_dialog);

    dialog_vbox1 = GTK_DIALOG (mp4_info_dialog)->vbox;
    gtk_object_set_data (GTK_OBJECT (mp4_info_dialog), "dialog_vbox1", dialog_vbox1);
    gtk_container_set_border_width (GTK_CONTAINER (dialog_vbox1), 3);

    hbox2 = gtk_hbox_new (FALSE, 0);
    gtk_widget_ref (hbox2);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "hbox2", hbox2,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_box_pack_start (GTK_BOX (dialog_vbox1), hbox2, FALSE, TRUE, 0);
    gtk_container_set_border_width (GTK_CONTAINER (hbox2), 3);

    filename_label = gtk_label_new ("Filename: ");
    gtk_widget_ref (filename_label);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "filename_label", filename_label,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_box_pack_start (GTK_BOX (hbox2), filename_label, FALSE, FALSE, 0);

    filename_entry = gtk_entry_new ();
    gtk_widget_ref (filename_entry);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "filename_entry", filename_entry,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_box_pack_start (GTK_BOX (hbox2), filename_entry, TRUE, TRUE, 0);
    gtk_entry_set_editable (GTK_ENTRY (filename_entry), FALSE);

    hbox3 = gtk_hbox_new (FALSE, 0);
    gtk_widget_ref (hbox3);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "hbox3", hbox3,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_box_pack_start (GTK_BOX (dialog_vbox1), hbox3, TRUE, TRUE, 0);
    gtk_container_set_border_width (GTK_CONTAINER (hbox3), 3);

    frame2 = gtk_frame_new ("Tag Info: ");
    gtk_widget_ref (frame2);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "frame2", frame2,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_box_pack_start (GTK_BOX (hbox3), frame2, TRUE, TRUE, 0);

    table1 = gtk_table_new (6, 2, FALSE);
    gtk_widget_ref (table1);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "table1", table1,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_container_add (GTK_CONTAINER (frame2), table1);
    gtk_container_set_border_width (GTK_CONTAINER (table1), 5);

    comment_label = gtk_label_new ("Comment: ");
    gtk_widget_ref (comment_label);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "comment_label", comment_label,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_table_attach (GTK_TABLE (table1), comment_label, 0, 1, 5, 6,
                      (GtkAttachOptions) (GTK_FILL),
                      (GtkAttachOptions) (GTK_EXPAND), 0, 0);
    gtk_misc_set_alignment (GTK_MISC (comment_label), 1, 0.5);

    genre_label = gtk_label_new ("Genre: ");
    gtk_widget_ref (genre_label);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "genre_label", genre_label,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_table_attach (GTK_TABLE (table1), genre_label, 0, 1, 4, 5,
                      (GtkAttachOptions) (GTK_FILL),
                      (GtkAttachOptions) (GTK_EXPAND), 0, 0);
    gtk_misc_set_alignment (GTK_MISC (genre_label), 1, 0.5);

    album_label = gtk_label_new ("Album: ");
    gtk_widget_ref (album_label);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "album_label", album_label,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_table_attach (GTK_TABLE (table1), album_label, 0, 1, 2, 3,
                      (GtkAttachOptions) (GTK_FILL),
                      (GtkAttachOptions) (GTK_EXPAND), 0, 0);
    gtk_misc_set_alignment (GTK_MISC (album_label), 1, 0.5);

    title_label = gtk_label_new ("Title: ");
    gtk_widget_ref (title_label);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "title_label", title_label,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_table_attach (GTK_TABLE (table1), title_label, 0, 1, 0, 1,
                      (GtkAttachOptions) (GTK_FILL),
                      (GtkAttachOptions) (GTK_EXPAND), 0, 0);
    gtk_misc_set_alignment (GTK_MISC (title_label), 1, 0.5);

    artist_label = gtk_label_new ("Artist: ");
    gtk_widget_ref (artist_label);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "artist_label", artist_label,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_table_attach (GTK_TABLE (table1), artist_label, 0, 1, 1, 2,
                      (GtkAttachOptions) (GTK_FILL),
                      (GtkAttachOptions) (GTK_EXPAND), 0, 0);
    gtk_misc_set_alignment (GTK_MISC (artist_label), 1, 0.5);

    year_label = gtk_label_new ("Year: ");
    gtk_widget_ref (year_label);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "year_label", year_label,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_table_attach (GTK_TABLE (table1), year_label, 0, 1, 3, 4,
                      (GtkAttachOptions) (GTK_FILL),
                      (GtkAttachOptions) (GTK_EXPAND), 0, 0);
    gtk_misc_set_alignment (GTK_MISC (year_label), 1, 0.5);

    hbox4 = gtk_hbox_new (FALSE, 0);
    gtk_widget_ref (hbox4);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "hbox4", hbox4,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_table_attach (GTK_TABLE (table1), hbox4, 1, 2, 3, 4,
                      (GtkAttachOptions) (GTK_EXPAND | GTK_FILL),
                      (GtkAttachOptions) (GTK_FILL), 0, 0);

    year_entry = gtk_entry_new ();
    gtk_widget_ref (year_entry);
    gtk_object_set_data_full (GTK_OBJECT (mp4_info_dialog), "year_entry", year_entry,
                              (GtkDestroyNotify) gtk_widget_unref);
    gtk_box_pack_start (GTK_BOX (hbox4), year_entry, FALSE, FALSE, 0);
    gtk_widget_set_usize (year_entry, 60, -2);
    gtk_entry_set_editable (GTK_ENTRY (year_entry), FALSE);

    track_label = gtk_label_new ("     Track: ");
    gtk_widget_ref (track_label);