void WindowGrabber::cleanup() { if (m_screenPixmapBufferInitialized) { screen_destroy_buffer(m_screenPixmapBuffer); m_screenPixmapBufferInitialized = false; } if (m_screenPixmapInitialized) { screen_destroy_pixmap(m_screenPixmap); m_screenPixmapInitialized = false; } if (m_screenContextInitialized) { screen_destroy_context(m_screenContext); m_screenContextInitialized = false; } }
int main (int argc, char **argv) { int card = -1; int dev = 0; snd_pcm_t *pcm_handle; FILE *file; wave_hdr wav_header; int samples; int sample_rate; int sample_channels; int sample_bits; char *sample_buffer; int fragsize = -1; int verbose = 0; int rtn; int final_return_code = -1; snd_pcm_channel_info_t pi; snd_mixer_t *mixer_handle; snd_mixer_group_t group; snd_pcm_channel_params_t pp; snd_pcm_channel_setup_t setup; int bsize, bytes_read, total_written = 0; fd_set rfds, wfds; uint32_t voice_mask[] = { 0, 0, 0, 0 }; snd_pcm_voice_conversion_t voice_conversion; int voice_override = 0; int num_frags = -1; char input_file[PATH_MAX]; char cwd[PATH_MAX]; screen_context_t screen_cxt; screen_window_t screen_win; screen_buffer_t screen_buf; int screen_fill_attribs[] = { SCREEN_BLIT_COLOR, COLOR_PURPLE, SCREEN_BLIT_END }; int screen_dirty[4] = { 0, 0, 1024, 600 }; //start with sane default values int idle_mode = SCREEN_IDLE_MODE_KEEP_AWAKE; int usage = SCREEN_USAGE_NATIVE; if (screen_create_context(&screen_cxt, 0) != 0) { return err("failed to create context"); } if (screen_create_window(&screen_win, screen_cxt) != 0) { err("failed to create window"); goto fail1; } if (screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_USAGE, &usage) != 0) { err("failed to set native usage mode"); goto fail2; } if (screen_create_window_buffers(screen_win, 1) != 0) { err("failed to set native usage mode"); goto fail2; } if(screen_get_window_property_pv(screen_win, SCREEN_PROPERTY_RENDER_BUFFERS, (void **)&screen_buf) != 0) { err("failed to get screen buffer"); goto fail2; } if (screen_fill(screen_cxt, screen_buf, screen_fill_attribs) != 0) { err("failed to fill the screen"); goto fail3; } if (screen_get_window_property_iv(screen_win, SCREEN_PROPERTY_BUFFER_SIZE, screen_dirty+2) != 0) { err("failed to get window size"); goto fail3; } if (screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_IDLE_MODE, &idle_mode) != 0) { err("failed to set idle mode"); goto fail3; } if (screen_post_window(screen_win, screen_buf, 1, screen_dirty, 0) != 0) { err("failed to post the window"); goto fail3; } if ((rtn = snd_pcm_open_preferred (&pcm_handle, &card, &dev, SND_PCM_OPEN_PLAYBACK)) < 0) { err ("device open"); goto fail3; } getcwd(cwd, PATH_MAX); rtn = snprintf(input_file, PATH_MAX, "%s%s", cwd, WAV_RELATIVE_PATH); if (rtn > PATH_MAX - 1) { err ("File name and path too long"); goto fail4; } if ((file = fopen (input_file, "r")) == 0) { err ("File open failed"); goto fail4; } if (check_hdr (file) == -1) { err ("check_hdr failed"); goto fail5; } samples = find_tag (file, "fmt "); fread (&wav_header, sizeof (wav_header), 1, file); fseek (file, (samples - sizeof (wave_hdr)), SEEK_CUR); sample_rate = ENDIAN_LE32 (wav_header.samples_per_sec); sample_channels = ENDIAN_LE16 (wav_header.channels); sample_bits = ENDIAN_LE16 (wav_header.bits_per_sample); printf ("SampleRate = %d, channels = %d, SampleBits = %d\n", sample_rate, sample_channels, sample_bits); /* disabling mmap is not actually required in this example but it is included to * demonstrate how it is used when it is required. */ if ((rtn = snd_pcm_plugin_set_disable (pcm_handle, PLUGIN_DISABLE_MMAP)) < 0) { fprintf (stderr, "snd_pcm_plugin_set_disable failed: %s\n", snd_strerror (rtn)); goto fail5; } memset (&pi, 0, sizeof (pi)); pi.channel = SND_PCM_CHANNEL_PLAYBACK; if ((rtn = snd_pcm_plugin_info (pcm_handle, &pi)) < 0) { fprintf (stderr, "snd_pcm_plugin_info failed: %s\n", snd_strerror (rtn)); goto fail5; } memset (&pp, 0, sizeof (pp)); pp.mode = SND_PCM_MODE_BLOCK; pp.channel = SND_PCM_CHANNEL_PLAYBACK; pp.start_mode = SND_PCM_START_FULL; pp.stop_mode = SND_PCM_STOP_STOP; pp.buf.block.frag_size = pi.max_fragment_size; if (fragsize != -1) { pp.buf.block.frag_size = fragsize; } pp.buf.block.frags_max = num_frags; pp.buf.block.frags_min = 1; pp.format.interleave = 1; pp.format.rate = sample_rate; pp.format.voices = sample_channels; if (ENDIAN_LE16 (wav_header.format_tag) == 6) pp.format.format = SND_PCM_SFMT_A_LAW; else if (ENDIAN_LE16 (wav_header.format_tag) == 7) pp.format.format = SND_PCM_SFMT_MU_LAW; else if (sample_bits == 8) pp.format.format = SND_PCM_SFMT_U8; else if (sample_bits == 24) pp.format.format = SND_PCM_SFMT_S24; else pp.format.format = SND_PCM_SFMT_S16_LE; strcpy (pp.sw_mixer_subchn_name, "Wave playback channel"); if ((rtn = snd_pcm_plugin_params (pcm_handle, &pp)) < 0) { fprintf (stderr, "snd_pcm_plugin_params failed: %s\n", snd_strerror (rtn)); goto fail5; } if ((rtn = snd_pcm_plugin_prepare (pcm_handle, SND_PCM_CHANNEL_PLAYBACK)) < 0) { fprintf (stderr, "snd_pcm_plugin_prepare failed: %s\n", snd_strerror (rtn)); goto fail5; } if (voice_override) { snd_pcm_plugin_get_voice_conversion (pcm_handle, SND_PCM_CHANNEL_PLAYBACK, &voice_conversion); voice_conversion.matrix[0] = voice_mask[0]; voice_conversion.matrix[1] = voice_mask[1]; voice_conversion.matrix[2] = voice_mask[2]; voice_conversion.matrix[3] = voice_mask[3]; snd_pcm_plugin_set_voice_conversion (pcm_handle, SND_PCM_CHANNEL_PLAYBACK, &voice_conversion); } memset (&setup, 0, sizeof (setup)); memset (&group, 0, sizeof (group)); setup.channel = SND_PCM_CHANNEL_PLAYBACK; setup.mixer_gid = &group.gid; if ((rtn = snd_pcm_plugin_setup (pcm_handle, &setup)) < 0) { fprintf (stderr, "snd_pcm_plugin_setup failed: %s\n", snd_strerror (rtn)); goto fail5; } printf ("Format %s \n", snd_pcm_get_format_name (setup.format.format)); printf ("Frag Size %d \n", setup.buf.block.frag_size); printf ("Total Frags %d \n", setup.buf.block.frags); printf ("Rate %d \n", setup.format.rate); printf ("Voices %d \n", setup.format.voices); bsize = setup.buf.block.frag_size; if (group.gid.name[0] == 0) { fprintf (stderr, "Mixer Pcm Group [%s] Not Set \n", group.gid.name); goto fail5; } printf ("Mixer Pcm Group [%s]\n", group.gid.name); if ((rtn = snd_mixer_open (&mixer_handle, card, setup.mixer_device)) < 0) { fprintf (stderr, "snd_mixer_open failed: %s\n", snd_strerror (rtn)); goto fail5; } samples = find_tag (file, "data"); sample_buffer = malloc (bsize); FD_ZERO (&rfds); FD_ZERO (&wfds); bytes_read = 1; while (total_written < samples && bytes_read > 0) { if (tcgetpgrp (0) == getpid ()) FD_SET (STDIN_FILENO, &rfds); FD_SET (snd_mixer_file_descriptor (mixer_handle), &rfds); FD_SET (snd_pcm_file_descriptor (pcm_handle, SND_PCM_CHANNEL_PLAYBACK), &wfds); rtn = max (snd_mixer_file_descriptor (mixer_handle), snd_pcm_file_descriptor (pcm_handle, SND_PCM_CHANNEL_PLAYBACK)); if (select (rtn + 1, &rfds, &wfds, NULL, NULL) == -1) { err ("select"); goto fail6; } if (FD_ISSET (snd_pcm_file_descriptor (pcm_handle, SND_PCM_CHANNEL_PLAYBACK), &wfds)) { snd_pcm_channel_status_t status; int written = 0; if ((bytes_read = fread (sample_buffer, 1, min (samples - total_written, bsize), file)) <= 0) continue; written = snd_pcm_plugin_write (pcm_handle, sample_buffer, bytes_read); if (verbose) printf ("bytes written = %d \n", written); if (written < bytes_read) { memset (&status, 0, sizeof (status)); status.channel = SND_PCM_CHANNEL_PLAYBACK; if (snd_pcm_plugin_status (pcm_handle, &status) < 0) { fprintf (stderr, "underrun: playback channel status error\n"); goto fail6; } if (status.status == SND_PCM_STATUS_READY || status.status == SND_PCM_STATUS_UNDERRUN) { if (snd_pcm_plugin_prepare (pcm_handle, SND_PCM_CHANNEL_PLAYBACK) < 0) { fprintf (stderr, "underrun: playback channel prepare error\n"); goto fail6; } } if (written < 0) written = 0; written += snd_pcm_plugin_write (pcm_handle, sample_buffer + written, bytes_read - written); } total_written += written; } } bytes_read = snd_pcm_plugin_flush (pcm_handle, SND_PCM_CHANNEL_PLAYBACK); final_return_code = 0; fail6: rtn = snd_mixer_close (mixer_handle); fail5: fclose (file); fail4: rtn = snd_pcm_close (pcm_handle); fail3: screen_destroy_buffer(screen_buf); fail2: screen_destroy_window(screen_win); fail1: screen_destroy_context(screen_cxt); return final_return_code; }