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A modern, network-enabled music player platform built on Rockbox technology. rockboxd.tsiry-sandratraina.com
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static char *audiobuf;static size_t audiobuflen;unsigned char xingbuf[1500];char tmpname[MAX_PATH];static long last_talk = 0;
static void xingupdate(int percent){ rb->lcd_putsf(0, 1, "%d%%", percent); rb->lcd_update(); if (rb->global_settings->talk_menu) { long now = *(rb->current_tick) / HZ; if (now - last_talk >= 5) { rb->talk_value_decimal(percent, UNIT_PERCENT, 0, false); last_talk = now; } }}
static int insert_data_in_file(const char *fname, int fpos, char *buf, int num_bytes){ int readlen; int rc; int orig_fd, fd;
rb->snprintf(tmpname, MAX_PATH, "%s.tmp", fname);
orig_fd = rb->open(fname, O_RDONLY); if(orig_fd < 0) { return 10*orig_fd - 1; }
fd = rb->creat(tmpname, 0666); if(fd < 0) { rb->close(orig_fd); return 10*fd - 2; }
/* First, copy the initial portion (the ID3 tag) */ if(fpos) { readlen = rb->read(orig_fd, audiobuf, fpos); if(readlen < 0) { rb->close(fd); rb->close(orig_fd); return 10*readlen - 3; }
rc = rb->write(fd, audiobuf, readlen); if(rc < 0) { rb->close(fd); rb->close(orig_fd); return 10*rc - 4; } }
/* Now insert the data into the file */ rc = rb->write(fd, buf, num_bytes); if(rc < 0) { rb->close(orig_fd); rb->close(fd); return 10*rc - 5; }
/* Copy the file */ do { readlen = rb->read(orig_fd, audiobuf, audiobuflen); if(readlen < 0) { rb->close(fd); rb->close(orig_fd); return 10*readlen - 7; }
rc = rb->write(fd, audiobuf, readlen); if(rc < 0) { rb->close(fd); rb->close(orig_fd); return 10*rc - 8; } } while(readlen > 0);
rb->close(fd); rb->close(orig_fd);
/* Remove the old file */ rc = rb->remove(fname); if(rc < 0) { return 10*rc - 9; }
/* Replace the old file with the new */ rc = rb->rename(tmpname, fname); if(rc < 0) { return 10*rc - 9; }
return 0;}
static void fileerror(int rc){ if (rb->global_settings->talk_menu) { rb->talk_id(LANG_FILE_ERROR, true); rb->talk_value_decimal(rc, UNIT_INT, 0, true); rb->talk_force_enqueue_next(); }
rb->splashf(HZ*2, rb->str(LANG_FILE_ERROR), rc); /* (voiced above) */}
static const unsigned char empty_id3_header[] ={ 'I', 'D', '3', 0x04, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x76 /* Size is 4096 minus 10 bytes for the header */};
static bool vbr_fix(const char *selected_file){ struct mp3entry entry; int fd; int rc; int num_frames; int numbytes; int framelen; int unused_space;
rb->lcd_clear_display(); rb->lcd_puts_scroll(0, 0, selected_file); rb->lcd_update();
xingupdate(0);
rc = rb->get_metadata(&entry, -1, selected_file); if(!rc) { fileerror(rc); return true; }
fd = rb->open(selected_file, O_RDWR); if(fd < 0) { fileerror(fd); return true; }
xingupdate(0);
num_frames = rb->count_mp3_frames(fd, entry.first_frame_offset, entry.filesize, xingupdate, audiobuf, audiobuflen);
if(num_frames) { /* Note: We don't need to pass a template header because it will be taken from the mpeg stream */ framelen = rb->create_xing_header(fd, entry.first_frame_offset, entry.filesize, xingbuf, num_frames, 0, 0, xingupdate, true, audiobuf, audiobuflen);
/* Try to fit the Xing header first in the stream. Replace the existing VBR header if there is one, else see if there is room between the ID3 tag and the first MP3 frame. */ if(entry.first_frame_offset - entry.id3v2len >= (unsigned int)framelen) { DEBUGF("Using existing space between ID3 and first frame\n");
/* Seek to the beginning of the unused space */ rc = rb->lseek(fd, entry.id3v2len, SEEK_SET); if(rc < 0) { rb->close(fd); fileerror(rc); return true; }
unused_space = entry.first_frame_offset - entry.id3v2len - framelen;
/* Fill the unused space with 0's (using the MP3 buffer) and write it to the file */ if(unused_space) { rb->memset(audiobuf, 0, unused_space); rc = rb->write(fd, audiobuf, unused_space); if(rc < 0) { rb->close(fd); fileerror(rc); return true; } }
/* Then write the Xing header */ rc = rb->write(fd, xingbuf, framelen); if(rc < 0) { rb->close(fd); fileerror(rc); return true; }
rb->close(fd); } else { /* If not, insert some space. If there is an ID3 tag in the file we only insert just enough to squeeze the Xing header in. If not, we insert an additional empty ID3 tag of 4K. */
rb->close(fd);
/* Nasty trick alert! The insert_data_in_file() function uses the MP3 buffer when copying the data. We assume that the ID3 tag isn't longer than 1MB so the xing buffer won't be overwritten. */
if(entry.first_frame_offset) { DEBUGF("Inserting %d bytes\n", framelen); numbytes = framelen; } else { DEBUGF("Inserting 4096+%d bytes\n", framelen); numbytes = 4096 + framelen;
rb->memset(audiobuf + 0x100000, 0, numbytes);
/* Insert the ID3 header */ rb->memcpy(audiobuf + 0x100000, empty_id3_header, sizeof(empty_id3_header)); }
/* Copy the Xing header */ rb->memcpy(audiobuf + 0x100000 + numbytes - framelen, xingbuf, framelen);
rc = insert_data_in_file(selected_file, entry.first_frame_offset, audiobuf + 0x100000, numbytes);
if(rc < 0) { fileerror(rc); return true; } }
xingupdate(100); } else { rb->close(fd);
/* Not a VBR file */ DEBUGF("Not a VBR file\n"); rb->splash(HZ*2, ID2P(LANG_NOT_A_VBR_FILE)); }
return false;}
enum plugin_status plugin_start(const void *parameter){ last_talk = *(rb->current_tick) / HZ;
if (!parameter) return PLUGIN_ERROR;
if (!rb->yesno_pop_confirm(ID2P(LANG_REALLY_OVERWRITE))) return PLUGIN_OK;
audiobuf = rb->plugin_get_audio_buffer(&audiobuflen);
#ifdef HAVE_ADJUSTABLE_CPU_FREQ rb->cpu_boost(true);#endif
vbr_fix(parameter);
#ifdef HAVE_ADJUSTABLE_CPU_FREQ rb->cpu_boost(false);#endif return PLUGIN_OK;}