void ca_get_active_chmap(struct ao *ao, AudioDeviceID device, int channel_count,
struct mp_chmap *out_map)
{
// Apparently, we have to guess by looking back at the supported layouts,
// and I haven't found a property that retrieves the actual currently
// active channel layout.
struct mp_chmap_sel chmap_sel = {0};
ca_retrieve_layouts(ao, &chmap_sel, device);
// Use any exact match.
for (int n = 0; n < chmap_sel.num_chmaps; n++) {
if (chmap_sel.chmaps[n].num == channel_count) {
MP_VERBOSE(ao, "mismatching channels - fallback #%d\n", n);
*out_map = chmap_sel.chmaps[n];
return;
}
}
// Fall back to stereo or mono, and fill the rest with silence. (We don't
// know what the device expects. We could use a larger default layout here,
// but let's not.)
mp_chmap_from_channels(out_map, MPMIN(2, channel_count));
out_map->num = channel_count;
for (int n = 2; n < out_map->num; n++)
out_map->speaker[n] = MP_SPEAKER_ID_NA;
MP_WARN(ao, "mismatching channels - falling back to %s\n",
mp_chmap_to_str(out_map));
}
static int init(struct ao *ao)
{
struct priv *priv = ao->priv;
ao->untimed = priv->untimed;
struct mp_chmap_sel sel = {.tmp = ao};
if (priv->channel_layouts) {
for (int n = 0; priv->channel_layouts[n]; n++) {
struct mp_chmap map = {0};
if (!mp_chmap_from_str(&map, bstr0(priv->channel_layouts[n]))) {
MP_FATAL(ao, "Invalid channel map in option.\n");
return -1;
}
mp_chmap_sel_add_map(&sel, &map);
}
} else {
mp_chmap_sel_add_any(&sel);
}
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
mp_chmap_from_channels(&ao->channels, 2);
priv->latency = priv->latency_sec * ao->samplerate;
// A "buffer" for this many seconds of audio
int bursts = (int)(ao->samplerate * priv->bufferlen + 1) / priv->outburst;
priv->buffersize = priv->outburst * bursts + priv->latency;
priv->last_time = mp_time_sec();
return 0;
}
static int init(struct ao *ao)
{
struct priv *priv = ao->priv;
ao->untimed = priv->untimed;
struct mp_chmap_sel sel = {.tmp = ao};
if (priv->channel_layouts.num_chmaps) {
for (int n = 0; n < priv->channel_layouts.num_chmaps; n++)
mp_chmap_sel_add_map(&sel, &priv->channel_layouts.chmaps[n]);
} else {
mp_chmap_sel_add_any(&sel);
}
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
mp_chmap_from_channels(&ao->channels, 2);
priv->latency = priv->latency_sec * ao->samplerate;
// A "buffer" for this many seconds of audio
int bursts = (int)(ao->samplerate * priv->bufferlen + 1) / priv->outburst;
priv->buffersize = priv->outburst * bursts + priv->latency;
priv->last_time = mp_time_sec();
return 0;
}
static bool chmap_from_waveformat(struct mp_chmap *channels,
const WAVEFORMATEX *wf)
{
if (wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
mp_chmap_from_waveext(channels, wformat->dwChannelMask);
} else {
mp_chmap_from_channels(channels, wf->nChannels);
}
if (channels->num != wf->nChannels) {
mp_chmap_from_str(channels, bstr0("empty"));
return false;
}
return true;
}
static int control(struct af_instance *af, int cmd, void *arg)
{
struct priv *p = af->priv;
switch (cmd) {
case AF_CONTROL_REINIT: {
struct mp_audio *in = arg;
struct mp_audio orig_in = *in;
struct mp_audio *out = af->data;
if (af_to_avformat(in->format) == AV_SAMPLE_FMT_NONE)
mp_audio_set_format(in, AF_FORMAT_FLOAT);
if (!mp_chmap_is_lavc(&in->channels))
mp_chmap_reorder_to_lavc(&in->channels); // will always work
if (!recreate_graph(af, in))
return AF_ERROR;
AVFilterLink *l_out = p->out->inputs[0];
out->rate = l_out->sample_rate;
mp_audio_set_format(out, af_from_avformat(l_out->format));
struct mp_chmap out_cm;
mp_chmap_from_lavc(&out_cm, l_out->channel_layout);
if (!out_cm.num || out_cm.num != l_out->channels)
mp_chmap_from_channels(&out_cm, l_out->channels);
mp_audio_set_channels(out, &out_cm);
if (!mp_audio_config_valid(out))
return AF_ERROR;
p->timebase_out = l_out->time_base;
// Blatantly incorrect; we don't know what the filters do.
af->mul = out->rate / (double)in->rate;
return mp_audio_config_equals(in, &orig_in) ? AF_OK : AF_FALSE;
}
}
return AF_UNKNOWN;
}
static int init(struct ao *ao)
{
struct priv *priv = ao->priv;
ao->untimed = priv->untimed;
struct mp_chmap_sel sel = {0};
mp_chmap_sel_add_any(&sel);
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
mp_chmap_from_channels(&ao->channels, 2);
priv->latency = priv->latency_sec * ao->samplerate;
// A "buffer" for this many seconds of audio
int bursts = (int)(ao->samplerate * priv->bufferlen + 1) / priv->outburst;
priv->buffersize = priv->outburst * bursts + priv->latency;
priv->last_time = mp_time_sec();
return 0;
}
static int set_ao_format(struct wasapi_state *state,
struct ao *const ao,
WAVEFORMATEXTENSIBLE wformat) {
// .Data1 == 1 is PCM, .Data1 == 3 is IEEE_FLOAT
int format = format_set_bits(ao->format,
wformat.Format.wBitsPerSample, wformat.SubFormat.Data1 == 3);
if (wformat.SubFormat.Data1 != 1 && wformat.SubFormat.Data1 != 3) {
MP_ERR(ao, "unknown SubFormat %"PRIu32"\n",
(uint32_t)wformat.SubFormat.Data1);
return 0;
}
ao->samplerate = wformat.Format.nSamplesPerSec;
ao->bps = wformat.Format.nAvgBytesPerSec;
ao->format = format;
if (ao->channels.num != wformat.Format.nChannels) {
mp_chmap_from_channels(&ao->channels, wformat.Format.nChannels);
}
state->format = wformat;
return 1;
}
static int demux_open_tv(demuxer_t *demuxer, enum demux_check check)
{
tvi_handle_t *tvh;
const tvi_functions_t *funcs;
if (check > DEMUX_CHECK_REQUEST || demuxer->stream->type != STREAMTYPE_TV)
return -1;
tv_param_t *params = mp_get_config_group(demuxer, demuxer->global,
&tv_params_conf);
bstr urlparams = bstr0(demuxer->stream->path);
bstr channel, input;
bstr_split_tok(urlparams, "/", &channel, &input);
if (channel.len) {
talloc_free(params->channels);
params->channel = bstrto0(NULL, channel);
}
if (input.len) {
bstr r;
params->input = bstrtoll(input, &r, 0);
if (r.len) {
MP_ERR(demuxer->stream, "invalid input: '%.*s'\n", BSTR_P(input));
return -1;
}
}
assert(demuxer->priv==NULL);
if(!(tvh=tv_begin(params, demuxer->log))) return -1;
if (!tvh->functions->init(tvh->priv)) return -1;
tvh->demuxer = demuxer;
if (!open_tv(tvh)){
tv_uninit(tvh);
return -1;
}
funcs = tvh->functions;
demuxer->priv=tvh;
struct sh_stream *sh_v = demux_alloc_sh_stream(STREAM_VIDEO);
/* get IMAGE FORMAT */
int fourcc;
funcs->control(tvh->priv, TVI_CONTROL_VID_GET_FORMAT, &fourcc);
if (fourcc == MP_FOURCC_MJPEG) {
sh_v->codec->codec = "mjpeg";
} else {
sh_v->codec->codec = "rawvideo";
sh_v->codec->codec_tag = fourcc;
}
/* set FPS and FRAMETIME */
if(!sh_v->codec->fps)
{
float tmp;
if (funcs->control(tvh->priv, TVI_CONTROL_VID_GET_FPS, &tmp) != TVI_CONTROL_TRUE)
sh_v->codec->fps = 25.0f; /* on PAL */
else sh_v->codec->fps = tmp;
}
if (tvh->tv_param->fps != -1.0f)
sh_v->codec->fps = tvh->tv_param->fps;
/* If playback only mode, go to immediate mode, fail silently */
if(tvh->tv_param->immediate == 1)
{
funcs->control(tvh->priv, TVI_CONTROL_IMMEDIATE, 0);
tvh->tv_param->audio = 0;
}
/* set width */
funcs->control(tvh->priv, TVI_CONTROL_VID_GET_WIDTH, &sh_v->codec->disp_w);
/* set height */
funcs->control(tvh->priv, TVI_CONTROL_VID_GET_HEIGHT, &sh_v->codec->disp_h);
demux_add_sh_stream(demuxer, sh_v);
demuxer->seekable = 0;
/* here comes audio init */
if (tvh->tv_param->audio && funcs->control(tvh->priv, TVI_CONTROL_IS_AUDIO, 0) == TVI_CONTROL_TRUE)
{
int audio_format;
/* yeah, audio is present */
funcs->control(tvh->priv, TVI_CONTROL_AUD_SET_SAMPLERATE,
&tvh->tv_param->audiorate);
if (funcs->control(tvh->priv, TVI_CONTROL_AUD_GET_FORMAT, &audio_format) != TVI_CONTROL_TRUE)
goto no_audio;
switch(audio_format)
{
// This is the only format any of the current inputs generate.
case AF_FORMAT_S16:
break;
default:
MP_ERR(tvh, "Audio type '%s' unsupported!\n",
af_fmt_to_str(audio_format));
goto no_audio;
}
struct sh_stream *sh_a = demux_alloc_sh_stream(STREAM_AUDIO);
funcs->control(tvh->priv, TVI_CONTROL_AUD_GET_SAMPLERATE,
&sh_a->codec->samplerate);
int nchannels = sh_a->codec->channels.num;
funcs->control(tvh->priv, TVI_CONTROL_AUD_GET_CHANNELS,
&nchannels);
mp_chmap_from_channels(&sh_a->codec->channels, nchannels);
// s16ne
mp_set_pcm_codec(sh_a->codec, true, false, 16, BYTE_ORDER == BIG_ENDIAN);
demux_add_sh_stream(demuxer, sh_a);
MP_VERBOSE(tvh, " TV audio: %d channels, %d bits, %d Hz\n",
nchannels, 16, sh_a->codec->samplerate);
}
no_audio:
if(!(funcs->start(tvh->priv))){
// start failed :(
tv_uninit(tvh);
return -1;
}
/* set color eq */
tv_set_color_options(tvh, TV_COLOR_BRIGHTNESS, tvh->tv_param->brightness);
tv_set_color_options(tvh, TV_COLOR_HUE, tvh->tv_param->hue);
tv_set_color_options(tvh, TV_COLOR_SATURATION, tvh->tv_param->saturation);
tv_set_color_options(tvh, TV_COLOR_CONTRAST, tvh->tv_param->contrast);
if(tvh->tv_param->gain!=-1)
if(funcs->control(tvh->priv,TVI_CONTROL_VID_SET_GAIN,&tvh->tv_param->gain)!=TVI_CONTROL_TRUE)
MP_WARN(tvh, "Unable to set gain control!\n");
return 0;
}
static int demux_open_tv(demuxer_t *demuxer, enum demux_check check)
{
tvi_handle_t *tvh;
sh_video_t *sh_video;
sh_audio_t *sh_audio = NULL;
const tvi_functions_t *funcs;
if (check > DEMUX_CHECK_REQUEST || demuxer->stream->type != STREAMTYPE_TV)
return -1;
demuxer->priv=NULL;
if(!(tvh=tv_begin(demuxer->stream->priv, demuxer->log))) return -1;
if (!tvh->functions->init(tvh->priv)) return -1;
tvh->demuxer = demuxer;
if (!open_tv(tvh)){
tv_uninit(tvh);
return -1;
}
funcs = tvh->functions;
demuxer->priv=tvh;
struct sh_stream *sh_v = new_sh_stream(demuxer, STREAM_VIDEO);
sh_video = sh_v->video;
/* get IMAGE FORMAT */
int fourcc;
funcs->control(tvh->priv, TVI_CONTROL_VID_GET_FORMAT, &fourcc);
if (fourcc == MP_FOURCC_MJPEG) {
sh_v->codec = "mjpeg";
} else {
sh_v->codec = "rawvideo";
sh_v->format = fourcc;
}
/* set FPS and FRAMETIME */
if(!sh_video->fps)
{
float tmp;
if (funcs->control(tvh->priv, TVI_CONTROL_VID_GET_FPS, &tmp) != TVI_CONTROL_TRUE)
sh_video->fps = 25.0f; /* on PAL */
else sh_video->fps = tmp;
}
if (tvh->tv_param->fps != -1.0f)
sh_video->fps = tvh->tv_param->fps;
/* If playback only mode, go to immediate mode, fail silently */
if(tvh->tv_param->immediate == 1)
{
funcs->control(tvh->priv, TVI_CONTROL_IMMEDIATE, 0);
tvh->tv_param->noaudio = 1;
}
/* set width */
funcs->control(tvh->priv, TVI_CONTROL_VID_GET_WIDTH, &sh_video->disp_w);
/* set height */
funcs->control(tvh->priv, TVI_CONTROL_VID_GET_HEIGHT, &sh_video->disp_h);
demuxer->seekable = 0;
/* here comes audio init */
if (tvh->tv_param->noaudio == 0 && funcs->control(tvh->priv, TVI_CONTROL_IS_AUDIO, 0) == TVI_CONTROL_TRUE)
{
int audio_format;
/* yeah, audio is present */
funcs->control(tvh->priv, TVI_CONTROL_AUD_SET_SAMPLERATE,
&tvh->tv_param->audiorate);
if (funcs->control(tvh->priv, TVI_CONTROL_AUD_GET_FORMAT, &audio_format) != TVI_CONTROL_TRUE)
goto no_audio;
switch(audio_format)
{
case AF_FORMAT_U8:
case AF_FORMAT_S8:
case AF_FORMAT_U16_LE:
case AF_FORMAT_U16_BE:
case AF_FORMAT_S16_LE:
case AF_FORMAT_S16_BE:
case AF_FORMAT_S32_LE:
case AF_FORMAT_S32_BE:
break;
case AF_FORMAT_MPEG2:
default:
MP_ERR(tvh, "Audio type '%s' unsupported!\n",
af_fmt_to_str(audio_format));
goto no_audio;
}
struct sh_stream *sh_a = new_sh_stream(demuxer, STREAM_AUDIO);
sh_audio = sh_a->audio;
funcs->control(tvh->priv, TVI_CONTROL_AUD_GET_SAMPLERATE,
&sh_audio->samplerate);
int nchannels = sh_audio->channels.num;
funcs->control(tvh->priv, TVI_CONTROL_AUD_GET_CHANNELS,
&nchannels);
mp_chmap_from_channels(&sh_audio->channels, nchannels);
sh_a->codec = "mp-pcm";
sh_a->format = audio_format;
int samplesize = af_fmt2bits(audio_format) / 8;
sh_audio->i_bps =
sh_audio->samplerate * samplesize * sh_audio->channels.num;
// emulate WF for win32 codecs:
sh_audio->wf = talloc_zero(sh_audio, MP_WAVEFORMATEX);
sh_audio->wf->wFormatTag = sh_a->format;
sh_audio->wf->nChannels = sh_audio->channels.num;
sh_audio->wf->wBitsPerSample = samplesize * 8;
sh_audio->wf->nSamplesPerSec = sh_audio->samplerate;
sh_audio->wf->nBlockAlign = samplesize * sh_audio->channels.num;
sh_audio->wf->nAvgBytesPerSec = sh_audio->i_bps;
MP_VERBOSE(tvh, " TV audio: %d channels, %d bits, %d Hz\n",
sh_audio->wf->nChannels, sh_audio->wf->wBitsPerSample,
sh_audio->wf->nSamplesPerSec);
}
no_audio:
if(!(funcs->start(tvh->priv))){
// start failed :(
tv_uninit(tvh);
return -1;
}
/* set color eq */
tv_set_color_options(tvh, TV_COLOR_BRIGHTNESS, tvh->tv_param->brightness);
tv_set_color_options(tvh, TV_COLOR_HUE, tvh->tv_param->hue);
tv_set_color_options(tvh, TV_COLOR_SATURATION, tvh->tv_param->saturation);
tv_set_color_options(tvh, TV_COLOR_CONTRAST, tvh->tv_param->contrast);
if(tvh->tv_param->gain!=-1)
if(funcs->control(tvh->priv,TVI_CONTROL_VID_SET_GAIN,&tvh->tv_param->gain)!=TVI_CONTROL_TRUE)
MP_WARN(tvh, "Unable to set gain control!\n");
return 0;
}
void reinit_audio_chain(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
init_demux_stream(mpctx, STREAM_AUDIO);
if (!mpctx->sh_audio) {
uninit_player(mpctx, INITIALIZED_AO);
goto no_audio;
}
if (!(mpctx->initialized_flags & INITIALIZED_ACODEC)) {
if (!init_best_audio_codec(mpctx->sh_audio, opts->audio_decoders))
goto init_error;
mpctx->initialized_flags |= INITIALIZED_ACODEC;
}
int ao_srate = opts->force_srate;
int ao_format = opts->audio_output_format;
struct mp_chmap ao_channels = {0};
if (mpctx->initialized_flags & INITIALIZED_AO) {
ao_srate = mpctx->ao->samplerate;
ao_format = mpctx->ao->format;
ao_channels = mpctx->ao->channels;
} else {
// Automatic downmix
if (mp_chmap_is_stereo(&opts->audio_output_channels) &&
!mp_chmap_is_stereo(&mpctx->sh_audio->channels))
{
mp_chmap_from_channels(&ao_channels, 2);
}
}
// Determine what the filter chain outputs. build_afilter_chain() also
// needs this for testing whether playback speed is changed by resampling
// or using a special filter.
if (!init_audio_filters(mpctx->sh_audio, // preliminary init
// input:
mpctx->sh_audio->samplerate,
// output:
&ao_srate, &ao_channels, &ao_format)) {
MP_ERR(mpctx, "Error at audio filter chain pre-init!\n");
goto init_error;
}
if (!(mpctx->initialized_flags & INITIALIZED_AO)) {
mpctx->initialized_flags |= INITIALIZED_AO;
mp_chmap_remove_useless_channels(&ao_channels,
&opts->audio_output_channels);
mpctx->ao = ao_init_best(mpctx->global, mpctx->input,
mpctx->encode_lavc_ctx, ao_srate, ao_format,
ao_channels);
struct ao *ao = mpctx->ao;
if (!ao) {
MP_ERR(mpctx, "Could not open/initialize audio device -> no sound.\n");
goto init_error;
}
ao->buffer.start = talloc_new(ao);
char *s = mp_audio_fmt_to_str(ao->samplerate, &ao->channels, ao->format);
MP_INFO(mpctx, "AO: [%s] %s\n", ao->driver->name, s);
talloc_free(s);
MP_VERBOSE(mpctx, "AO: Description: %s\n", ao->driver->description);
update_window_title(mpctx, true);
}
if (recreate_audio_filters(mpctx) < 0)
goto init_error;
mpctx->syncing_audio = true;
return;
init_error:
uninit_player(mpctx, INITIALIZED_ACODEC | INITIALIZED_AO);
cleanup_demux_stream(mpctx, STREAM_AUDIO);
no_audio:
mpctx->current_track[STREAM_AUDIO] = NULL;
MP_INFO(mpctx, "Audio: no audio\n");
}
void mp_audio_set_num_channels(struct mp_audio *mpa, int num_channels)
{
struct mp_chmap map;
mp_chmap_from_channels(&map, num_channels);
mp_audio_set_channels(mpa, &map);
}
