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Merge remote-tracking branch 'lukaszmluki/master'

Browse Source 
* lukaszmluki/master:
  lavd/pulse_audio_enc: implement pause messages
  lavd/pulse_audio_enc: implement volume messages
  lavd/avdevice: add volume messages
  lavd/pulse_audio_enc: add buffer fullness messages
  lavd/pulse_audio_enc: add nonblocking mode
  lavd/pulse_audio_enc: replace simple API with async API
  lavd/pulse_audio_enc: cosmetics
  lavd/pulse_audio_common: add context helper functions
  lavd/pulse_audio_common: rename variables and enums

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-04-18 04:38:44 +02:00
commit a614f892a6
4 changed files with 757 additions and 103 deletions
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53
libavdevice/avdevice.h
View File

@ -154,6 +154,41 @@ enum AVAppToDevMessageType {
AV_APP_TO_DEV_PAUSE = MKBETAG('P', 'A', 'U', ' '),
AV_APP_TO_DEV_PLAY = MKBETAG('P', 'L', 'A', 'Y'),
AV_APP_TO_DEV_TOGGLE_PAUSE = MKBETAG('P', 'A', 'U', 'T'),
/**
* Volume control message.
*
* Set volume level. It may be device-dependent if volume
* is changed per stream or system wide. Per stream volume
* change is expected when possible.
*
* data: double: new volume with range of 0.0 - 1.0.
*/
AV_APP_TO_DEV_SET_VOLUME = MKBETAG('S', 'V', 'O', 'L'),
/**
* Mute control messages.
*
* Change mute state. It may be device-dependent if mute status
* is changed per stream or system wide. Per stream mute status
* change is expected when possible.
*
* data: NULL.
*/
AV_APP_TO_DEV_MUTE = MKBETAG(' ', 'M', 'U', 'T'),
AV_APP_TO_DEV_UNMUTE = MKBETAG('U', 'M', 'U', 'T'),
AV_APP_TO_DEV_TOGGLE_MUTE = MKBETAG('T', 'M', 'U', 'T'),
/**
* Get volume/mute messages.
*
* Force the device to send AV_DEV_TO_APP_VOLUME_LEVEL_CHANGED or
* AV_DEV_TO_APP_MUTE_STATE_CHANGED command respectively.
*
* data: NULL.
*/
AV_APP_TO_DEV_GET_VOLUME = MKBETAG('G', 'V', 'O', 'L'),
AV_APP_TO_DEV_GET_MUTE = MKBETAG('G', 'M', 'U', 'T'),
};
/**
@ -237,6 +272,24 @@ enum AVDevToAppMessageType {
*/
AV_DEV_TO_APP_BUFFER_READABLE = MKBETAG('B','R','D',' '),
AV_DEV_TO_APP_BUFFER_WRITABLE = MKBETAG('B','W','R',' '),
/**
* Mute state change message.
*
* Device informs that mute state has changed.
*
* data: int: 0 for not muted state, non-zero for muted state.
*/
AV_DEV_TO_APP_MUTE_STATE_CHANGED = MKBETAG('C','M','U','T'),
/**
* Volume level change message.
*
* Device informs that volume level has changed.
*
* data: double: new volume with range of 0.0 - 1.0.
*/
AV_DEV_TO_APP_VOLUME_LEVEL_CHANGED = MKBETAG('C','V','O','L'),
};
/**

103
libavdevice/pulse_audio_common.c
View File

@ -24,6 +24,7 @@
#include "libavutil/attributes.h"
#include "libavutil/avstring.h"
#include "libavutil/mem.h"
#include "libavutil/avassert.h"
pa_sample_format_t av_cold ff_codec_id_to_pulse_format(enum AVCodecID codec_id)
{
@ -43,10 +44,10 @@ pa_sample_format_t av_cold ff_codec_id_to_pulse_format(enum AVCodecID codec_id)
}
}
enum PulseAudioLoopState {
PA_LOOP_INITIALIZING,
PA_LOOP_READY,
PA_LOOP_FINISHED
enum PulseAudioContextState {
PULSE_CONTEXT_INITIALIZING,
PULSE_CONTEXT_READY,
PULSE_CONTEXT_FINISHED
};
typedef struct PulseAudioDeviceList {
@ -58,21 +59,79 @@ typedef struct PulseAudioDeviceList {
static void pa_state_cb(pa_context *c, void *userdata)
{
enum PulseAudioLoopState *loop_status = userdata;
enum PulseAudioContextState *context_state = userdata;
switch (pa_context_get_state(c)) {
case PA_CONTEXT_FAILED:
case PA_CONTEXT_TERMINATED:
*loop_status = PA_LOOP_FINISHED;
*context_state = PULSE_CONTEXT_FINISHED;
break;
case PA_CONTEXT_READY:
*loop_status = PA_LOOP_READY;
*context_state = PULSE_CONTEXT_READY;
break;
default:
break;
}
}
void ff_pulse_audio_disconnect_context(pa_mainloop **pa_ml, pa_context **pa_ctx)
{
av_assert0(pa_ml);
av_assert0(pa_ctx);
if (*pa_ctx) {
pa_context_set_state_callback(*pa_ctx, NULL, NULL);
pa_context_disconnect(*pa_ctx);
pa_context_unref(*pa_ctx);
}
if (*pa_ml)
pa_mainloop_free(*pa_ml);
*pa_ml = NULL;
*pa_ctx = NULL;
}
int ff_pulse_audio_connect_context(pa_mainloop **pa_ml, pa_context **pa_ctx,
const char *server, const char *description)
{
int ret;
pa_mainloop_api *pa_mlapi = NULL;
enum PulseAudioContextState context_state = PULSE_CONTEXT_INITIALIZING;
av_assert0(pa_ml);
av_assert0(pa_ctx);
*pa_ml = NULL;
*pa_ctx = NULL;
if (!(*pa_ml = pa_mainloop_new()))
return AVERROR(ENOMEM);
if (!(pa_mlapi = pa_mainloop_get_api(*pa_ml))) {
ret = AVERROR_EXTERNAL;
goto fail;
}
if (!(*pa_ctx = pa_context_new(pa_mlapi, description))) {
ret = AVERROR(ENOMEM);
goto fail;
}
pa_context_set_state_callback(*pa_ctx, pa_state_cb, &context_state);
if (pa_context_connect(*pa_ctx, server, 0, NULL) < 0) {
ret = AVERROR_EXTERNAL;
goto fail;
}
while (context_state == PULSE_CONTEXT_INITIALIZING)
pa_mainloop_iterate(*pa_ml, 1, NULL);
if (context_state == PULSE_CONTEXT_FINISHED) {
ret = AVERROR_EXTERNAL;
goto fail;
}
return 0;
fail:
ff_pulse_audio_disconnect_context(pa_ml, pa_ctx);
return ret;
}
static void pulse_add_detected_device(PulseAudioDeviceList *info,
const char *name, const char *description)
{
@ -138,11 +197,9 @@ static void pulse_server_info_cb(pa_context *c, const pa_server_info *i, void *u
int ff_pulse_audio_get_devices(AVDeviceInfoList *devices, const char *server, int output)
{
pa_mainloop *pa_ml = NULL;
pa_mainloop_api *pa_mlapi = NULL;
pa_operation *pa_op = NULL;
pa_context *pa_ctx = NULL;
enum pa_operation_state op_state;
enum PulseAudioLoopState loop_state = PA_LOOP_INITIALIZING;
PulseAudioDeviceList dev_list = { 0 };
int i;
@ -152,28 +209,9 @@ int ff_pulse_audio_get_devices(AVDeviceInfoList *devices, const char *server, in
return AVERROR(EINVAL);
devices->nb_devices = 0;
devices->devices = NULL;
if (!(pa_ml = pa_mainloop_new()))
return AVERROR(ENOMEM);
if (!(pa_mlapi = pa_mainloop_get_api(pa_ml))) {
dev_list.error_code = AVERROR_EXTERNAL;
goto fail;
}
if (!(pa_ctx = pa_context_new(pa_mlapi, "Query devices"))) {
dev_list.error_code = AVERROR(ENOMEM);
goto fail;
}
pa_context_set_state_callback(pa_ctx, pa_state_cb, &loop_state);
if (pa_context_connect(pa_ctx, server, 0, NULL) < 0) {
dev_list.error_code = AVERROR_EXTERNAL;
goto fail;
}
while (loop_state == PA_LOOP_INITIALIZING)
pa_mainloop_iterate(pa_ml, 1, NULL);
if (loop_state == PA_LOOP_FINISHED) {
dev_list.error_code = AVERROR_EXTERNAL;
if ((dev_list.error_code = ff_pulse_audio_connect_context(&pa_ml, &pa_ctx, server, "Query devices")) < 0)
goto fail;
}
if (output)
pa_op = pa_context_get_sink_info_list(pa_ctx, pulse_audio_sink_device_cb, &dev_list);
@ -206,11 +244,6 @@ int ff_pulse_audio_get_devices(AVDeviceInfoList *devices, const char *server, in
fail:
av_free(dev_list.default_device);
if(pa_ctx)
pa_context_disconnect(pa_ctx);
if (pa_ctx)
pa_context_unref(pa_ctx);
if (pa_ml)
pa_mainloop_free(pa_ml);
ff_pulse_audio_disconnect_context(&pa_ml, &pa_ctx);
return dev_list.error_code;
}

5
libavdevice/pulse_audio_common.h
View File

@ -30,4 +30,9 @@ pa_sample_format_t ff_codec_id_to_pulse_format(enum AVCodecID codec_id);
int ff_pulse_audio_get_devices(AVDeviceInfoList *devices, const char *server, int output);
int ff_pulse_audio_connect_context(pa_mainloop **pa_ml, pa_context **pa_ctx,
const char *server, const char *description);
void ff_pulse_audio_disconnect_context(pa_mainloop **pa_ml, pa_context **pa_ctx);
#endif /* AVDEVICE_PULSE_AUDIO_COMMON_H */

699
libavdevice/pulse_audio_enc.c
View File

@ -18,13 +18,15 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <pulse/simple.h>
#include <math.h>
#include <pulse/pulseaudio.h>
#include <pulse/error.h>
#include "libavformat/avformat.h"
#include "libavformat/internal.h"
#include "libavutil/opt.h"
#include "libavutil/time.h"
#include "libavutil/log.h"
#include "libavutil/attributes.h"
#include "pulse_audio_common.h"
typedef struct PulseData {
@ -33,20 +35,419 @@ typedef struct PulseData {
const char *name;
const char *stream_name;
const char *device;
pa_simple *pa;
int64_t timestamp;
int buffer_size;
int buffer_duration;
int buffer_size; /**< Buffer size in bytes */
int buffer_duration; /**< Buffer size in ms, recalculated to buffer_size */
int last_result;
pa_threaded_mainloop *mainloop;
pa_context *ctx;
pa_stream *stream;
int nonblocking;
int mute;
pa_volume_t base_volume;
pa_volume_t last_volume;
} PulseData;
static void pulse_audio_sink_device_cb(pa_context *ctx, const pa_sink_info *dev,
int eol, void *userdata)
{
PulseData *s = userdata;
if (s->ctx != ctx)
return;
if (eol) {
pa_threaded_mainloop_signal(s->mainloop, 0);
} else {
if (dev->flags & PA_SINK_FLAT_VOLUME)
s->base_volume = dev->base_volume;
else
s->base_volume = PA_VOLUME_NORM;
av_log(s, AV_LOG_DEBUG, "base volume: %u\n", s->base_volume);
}
}
/* Mainloop must be locked before calling this function as it uses pa_threaded_mainloop_wait. */
static int pulse_update_sink_info(AVFormatContext *h)
{
PulseData *s = h->priv_data;
pa_operation *op;
if (!(op = pa_context_get_sink_info_by_name(s->ctx, s->device,
pulse_audio_sink_device_cb, s))) {
av_log(s, AV_LOG_ERROR, "pa_context_get_sink_info_by_name failed.\n");
return AVERROR_EXTERNAL;
}
while (pa_operation_get_state(op) == PA_OPERATION_RUNNING)
pa_threaded_mainloop_wait(s->mainloop);
pa_operation_unref(op);
return 0;
}
static void pulse_audio_sink_input_cb(pa_context *ctx, const pa_sink_input_info *i,
int eol, void *userdata)
{
AVFormatContext *h = userdata;
PulseData *s = h->priv_data;
if (s->ctx != ctx)
return;
if (!eol) {
double val;
pa_volume_t vol = pa_cvolume_avg(&i->volume);
if (s->mute < 0 || (s->mute && !i->mute) || (!s->mute && i->mute)) {
s->mute = i->mute;
avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_MUTE_STATE_CHANGED, &s->mute, sizeof(s->mute));
}
vol = pa_sw_volume_divide(vol, s->base_volume);
if (s->last_volume != vol) {
val = (double)vol / PA_VOLUME_NORM;
avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_VOLUME_LEVEL_CHANGED, &val, sizeof(val));
s->last_volume = vol;
}
}
}
/* This function creates new loop so may be called from PA callbacks.
Mainloop must be locked before calling this function as it operates on streams. */
static int pulse_update_sink_input_info(AVFormatContext *h)
{
PulseData *s = h->priv_data;
pa_operation *op;
enum pa_operation_state op_state;
pa_mainloop *ml = NULL;
pa_context *ctx = NULL;
int ret = 0;
if ((ret = ff_pulse_audio_connect_context(&ml, &ctx, s->server, "Update sink input information")) < 0)
return ret;
if (!(op = pa_context_get_sink_input_info(ctx, pa_stream_get_index(s->stream),
pulse_audio_sink_input_cb, h))) {
ret = AVERROR_EXTERNAL;
goto fail;
}
while ((op_state = pa_operation_get_state(op)) == PA_OPERATION_RUNNING)
pa_mainloop_iterate(ml, 1, NULL);
pa_operation_unref(op);
if (op_state != PA_OPERATION_DONE) {
ret = AVERROR_EXTERNAL;
goto fail;
}
fail:
ff_pulse_audio_disconnect_context(&ml, &ctx);
if (ret)
av_log(s, AV_LOG_ERROR, "pa_context_get_sink_input_info failed.\n");
return ret;
}
static void pulse_event(pa_context *ctx, pa_subscription_event_type_t t,
uint32_t idx, void *userdata)
{
AVFormatContext *h = userdata;
PulseData *s = h->priv_data;
if (s->ctx != ctx)
return;
if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SINK_INPUT) {
if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_CHANGE)
// Calling from mainloop callback. No need to lock mainloop.
pulse_update_sink_input_info(h);
}
}
static void pulse_stream_writable(pa_stream *stream, size_t nbytes, void *userdata)
{
AVFormatContext *h = userdata;
PulseData *s = h->priv_data;
int64_t val = nbytes;
if (stream != s->stream)
return;
avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_WRITABLE, &val, sizeof(val));
pa_threaded_mainloop_signal(s->mainloop, 0);
}
static void pulse_overflow(pa_stream *stream, void *userdata)
{
AVFormatContext *h = userdata;
avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_OVERFLOW, NULL, 0);
}
static void pulse_underflow(pa_stream *stream, void *userdata)
{
AVFormatContext *h = userdata;
avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_UNDERFLOW, NULL, 0);
}
static void pulse_stream_state(pa_stream *stream, void *userdata)
{
PulseData *s = userdata;
if (stream != s->stream)
return;
switch (pa_stream_get_state(s->stream)) {
case PA_STREAM_READY:
case PA_STREAM_FAILED:
case PA_STREAM_TERMINATED:
pa_threaded_mainloop_signal(s->mainloop, 0);
default:
break;
}
}
static int pulse_stream_wait(PulseData *s)
{
pa_stream_state_t state;
while ((state = pa_stream_get_state(s->stream)) != PA_STREAM_READY) {
if (state == PA_STREAM_FAILED || state == PA_STREAM_TERMINATED)
return AVERROR_EXTERNAL;
pa_threaded_mainloop_wait(s->mainloop);
}
return 0;
}
static void pulse_context_state(pa_context *ctx, void *userdata)
{
PulseData *s = userdata;
if (s->ctx != ctx)
return;
switch (pa_context_get_state(ctx)) {
case PA_CONTEXT_READY:
case PA_CONTEXT_FAILED:
case PA_CONTEXT_TERMINATED:
pa_threaded_mainloop_signal(s->mainloop, 0);
default:
break;
}
}
static int pulse_context_wait(PulseData *s)
{
pa_context_state_t state;
while ((state = pa_context_get_state(s->ctx)) != PA_CONTEXT_READY) {
if (state == PA_CONTEXT_FAILED || state == PA_CONTEXT_TERMINATED)
return AVERROR_EXTERNAL;
pa_threaded_mainloop_wait(s->mainloop);
}
return 0;
}
static void pulse_stream_result(pa_stream *stream, int success, void *userdata)
{
PulseData *s = userdata;
if (stream != s->stream)
return;
s->last_result = success ? 0 : AVERROR_EXTERNAL;
pa_threaded_mainloop_signal(s->mainloop, 0);
}
static int pulse_finish_stream_operation(PulseData *s, pa_operation *op, const char *name)
{
if (!op) {
pa_threaded_mainloop_unlock(s->mainloop);
av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
return AVERROR_EXTERNAL;
}
s->last_result = 2;
while (s->last_result == 2)
pa_threaded_mainloop_wait(s->mainloop);
pa_operation_unref(op);
pa_threaded_mainloop_unlock(s->mainloop);
if (s->last_result != 0)
av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
return s->last_result;
}
static int pulse_set_pause(PulseData *s, int pause)
{
pa_operation *op;
pa_threaded_mainloop_lock(s->mainloop);
op = pa_stream_cork(s->stream, pause, pulse_stream_result, s);
return pulse_finish_stream_operation(s, op, "pa_stream_cork");
}
static int pulse_flash_stream(PulseData *s)
{
pa_operation *op;
pa_threaded_mainloop_lock(s->mainloop);
op = pa_stream_flush(s->stream, pulse_stream_result, s);
return pulse_finish_stream_operation(s, op, "pa_stream_flush");
}
static void pulse_context_result(pa_context *ctx, int success, void *userdata)
{
PulseData *s = userdata;
if (s->ctx != ctx)
return;
s->last_result = success ? 0 : AVERROR_EXTERNAL;
pa_threaded_mainloop_signal(s->mainloop, 0);
}
static int pulse_finish_context_operation(PulseData *s, pa_operation *op, const char *name)
{
if (!op) {
pa_threaded_mainloop_unlock(s->mainloop);
av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
return AVERROR_EXTERNAL;
}
s->last_result = 2;
while (s->last_result == 2)
pa_threaded_mainloop_wait(s->mainloop);
pa_operation_unref(op);
pa_threaded_mainloop_unlock(s->mainloop);
if (s->last_result != 0)
av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
return s->last_result;
}
static int pulse_set_mute(PulseData *s)
{
pa_operation *op;
pa_threaded_mainloop_lock(s->mainloop);
op = pa_context_set_sink_input_mute(s->ctx, pa_stream_get_index(s->stream),
s->mute, pulse_context_result, s);
return pulse_finish_context_operation(s, op, "pa_context_set_sink_input_mute");
}
static int pulse_set_volume(PulseData *s, double volume)
{
pa_operation *op;
pa_cvolume cvol;
pa_volume_t vol;
const pa_sample_spec *ss = pa_stream_get_sample_spec(s->stream);
vol = pa_sw_volume_multiply(lround(volume * PA_VOLUME_NORM), s->base_volume);
pa_cvolume_set(&cvol, ss->channels, PA_VOLUME_NORM);
pa_sw_cvolume_multiply_scalar(&cvol, &cvol, vol);
pa_threaded_mainloop_lock(s->mainloop);
op = pa_context_set_sink_input_volume(s->ctx, pa_stream_get_index(s->stream),
&cvol, pulse_context_result, s);
return pulse_finish_context_operation(s, op, "pa_context_set_sink_input_volume");
}
static int pulse_subscribe_events(PulseData *s)
{
pa_operation *op;
pa_threaded_mainloop_lock(s->mainloop);
op = pa_context_subscribe(s->ctx, PA_SUBSCRIPTION_MASK_SINK_INPUT, pulse_context_result, s);
return pulse_finish_context_operation(s, op, "pa_context_subscribe");
}
static void pulse_map_channels_to_pulse(int64_t channel_layout, pa_channel_map *channel_map)
{
channel_map->channels = 0;
if (channel_layout & AV_CH_FRONT_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT;
if (channel_layout & AV_CH_FRONT_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT;
if (channel_layout & AV_CH_FRONT_CENTER)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_CENTER;
if (channel_layout & AV_CH_LOW_FREQUENCY)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_LFE;
if (channel_layout & AV_CH_BACK_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_LEFT;
if (channel_layout & AV_CH_BACK_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_RIGHT;
if (channel_layout & AV_CH_FRONT_LEFT_OF_CENTER)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
if (channel_layout & AV_CH_FRONT_RIGHT_OF_CENTER)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
if (channel_layout & AV_CH_BACK_CENTER)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_CENTER;
if (channel_layout & AV_CH_SIDE_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_SIDE_LEFT;
if (channel_layout & AV_CH_SIDE_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_SIDE_RIGHT;
if (channel_layout & AV_CH_TOP_CENTER)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_CENTER;
if (channel_layout & AV_CH_TOP_FRONT_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_LEFT;
if (channel_layout & AV_CH_TOP_FRONT_CENTER)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_CENTER;
if (channel_layout & AV_CH_TOP_FRONT_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_RIGHT;
if (channel_layout & AV_CH_TOP_BACK_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_LEFT;
if (channel_layout & AV_CH_TOP_BACK_CENTER)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_CENTER;
if (channel_layout & AV_CH_TOP_BACK_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_RIGHT;
if (channel_layout & AV_CH_STEREO_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT;
if (channel_layout & AV_CH_STEREO_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT;
if (channel_layout & AV_CH_WIDE_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX0;
if (channel_layout & AV_CH_WIDE_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX1;
if (channel_layout & AV_CH_SURROUND_DIRECT_LEFT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX2;
if (channel_layout & AV_CH_SURROUND_DIRECT_RIGHT)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX3;
if (channel_layout & AV_CH_LOW_FREQUENCY_2)
channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_LFE;
}
static av_cold int pulse_write_trailer(AVFormatContext *h)
{
PulseData *s = h->priv_data;
if (s->mainloop) {
pa_threaded_mainloop_lock(s->mainloop);
if (s->stream) {
pa_stream_disconnect(s->stream);
pa_stream_set_state_callback(s->stream, NULL, NULL);
pa_stream_set_write_callback(s->stream, NULL, NULL);
pa_stream_set_overflow_callback(s->stream, NULL, NULL);
pa_stream_set_underflow_callback(s->stream, NULL, NULL);
pa_stream_unref(s->stream);
s->stream = NULL;
}
if (s->ctx) {
pa_context_disconnect(s->ctx);
pa_context_set_state_callback(s->ctx, NULL, NULL);
pa_context_set_subscribe_callback(s->ctx, NULL, NULL);
pa_context_unref(s->ctx);
s->ctx = NULL;
}
pa_threaded_mainloop_unlock(s->mainloop);
pa_threaded_mainloop_stop(s->mainloop);
pa_threaded_mainloop_free(s->mainloop);
s->mainloop = NULL;
}
return 0;
}
static av_cold int pulse_write_header(AVFormatContext *h)
{
PulseData *s = h->priv_data;
AVStream *st = NULL;
int ret;
pa_sample_spec ss;
pa_buffer_attr attr = { -1, -1, -1, -1, -1 };
pa_sample_spec sample_spec;
pa_buffer_attr buffer_attributes = { -1, -1, -1, -1, -1 };
pa_channel_map channel_map;
pa_mainloop_api *mainloop_api;
const char *stream_name = s->stream_name;
static const pa_stream_flags_t stream_flags = PA_STREAM_INTERPOLATE_TIMING |
PA_STREAM_AUTO_TIMING_UPDATE |
PA_STREAM_NOT_MONOTONIC;
if (h->nb_streams != 1 || h->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
av_log(s, AV_LOG_ERROR, "Only a single audio stream is supported.\n");
@ -60,65 +461,158 @@ static av_cold int pulse_write_header(AVFormatContext *h)
else
stream_name = "Playback";
}
s->nonblocking = (h->flags & AVFMT_FLAG_NONBLOCK);
if (s->buffer_duration) {
int64_t bytes = s->buffer_duration;
bytes *= st->codec->channels * st->codec->sample_rate *
av_get_bytes_per_sample(st->codec->sample_fmt);
bytes /= 1000;
attr.tlength = FFMAX(s->buffer_size, av_clip64(bytes, 0, UINT32_MAX - 1));
buffer_attributes.tlength = FFMAX(s->buffer_size, av_clip64(bytes, 0, UINT32_MAX - 1));
av_log(s, AV_LOG_DEBUG,
"Buffer duration: %ums recalculated into %"PRId64" bytes buffer.\n",
s->buffer_duration, bytes);
av_log(s, AV_LOG_DEBUG, "Real buffer length is %u bytes\n", attr.tlength);
av_log(s, AV_LOG_DEBUG, "Real buffer length is %u bytes\n", buffer_attributes.tlength);
} else if (s->buffer_size)
attr.tlength = s->buffer_size;
buffer_attributes.tlength = s->buffer_size;
ss.format = ff_codec_id_to_pulse_format(st->codec->codec_id);
ss.rate = st->codec->sample_rate;
ss.channels = st->codec->channels;
s->pa = pa_simple_new(s->server, // Server
s->name, // Application name
PA_STREAM_PLAYBACK,
s->device, // Device
stream_name, // Description of a stream
&ss, // Sample format
NULL, // Use default channel map
&attr, // Buffering attributes
&ret); // Result
if (!s->pa) {
av_log(s, AV_LOG_ERROR, "pa_simple_new failed: %s\n", pa_strerror(ret));
return AVERROR(EIO);
sample_spec.format = ff_codec_id_to_pulse_format(st->codec->codec_id);
sample_spec.rate = st->codec->sample_rate;
sample_spec.channels = st->codec->channels;
if (!pa_sample_spec_valid(&sample_spec)) {
av_log(s, AV_LOG_ERROR, "Invalid sample spec.\n");
return AVERROR(EINVAL);
}
if (sample_spec.channels == 1) {
channel_map.channels = 1;
channel_map.map[0] = PA_CHANNEL_POSITION_MONO;
} else if (st->codec->channel_layout) {
if (av_get_channel_layout_nb_channels(st->codec->channel_layout) != st->codec->channels)
return AVERROR(EINVAL);
pulse_map_channels_to_pulse(st->codec->channel_layout, &channel_map);
/* Unknown channel is present in channel_layout, let PulseAudio use its default. */
if (channel_map.channels != sample_spec.channels) {
av_log(s, AV_LOG_WARNING, "Unknown channel. Using defaul channel map.\n");
channel_map.channels = 0;
}
} else
channel_map.channels = 0;
if (!channel_map.channels)
av_log(s, AV_LOG_WARNING, "Using PulseAudio's default channel map.\n");
else if (!pa_channel_map_valid(&channel_map)) {
av_log(s, AV_LOG_ERROR, "Invalid channel map.\n");
return AVERROR(EINVAL);
}
/* start main loop */
s->mainloop = pa_threaded_mainloop_new();
if (!s->mainloop) {
av_log(s, AV_LOG_ERROR, "Cannot create threaded mainloop.\n");
return AVERROR(ENOMEM);
}
if ((ret = pa_threaded_mainloop_start(s->mainloop)) < 0) {
av_log(s, AV_LOG_ERROR, "Cannot start threaded mainloop: %s.\n", pa_strerror(ret));
pa_threaded_mainloop_free(s->mainloop);
s->mainloop = NULL;
return AVERROR_EXTERNAL;
}
pa_threaded_mainloop_lock(s->mainloop);
mainloop_api = pa_threaded_mainloop_get_api(s->mainloop);
if (!mainloop_api) {
av_log(s, AV_LOG_ERROR, "Cannot get mainloop API.\n");
ret = AVERROR_EXTERNAL;
goto fail;
}
s->ctx = pa_context_new(mainloop_api, s->name);
if (!s->ctx) {
av_log(s, AV_LOG_ERROR, "Cannot create context.\n");
ret = AVERROR(ENOMEM);
goto fail;
}
pa_context_set_state_callback(s->ctx, pulse_context_state, s);
pa_context_set_subscribe_callback(s->ctx, pulse_event, h);
if ((ret = pa_context_connect(s->ctx, s->server, 0, NULL)) < 0) {
av_log(s, AV_LOG_ERROR, "Cannot connect context: %s.\n", pa_strerror(ret));
ret = AVERROR_EXTERNAL;
goto fail;
}
if ((ret = pulse_context_wait(s)) < 0) {
av_log(s, AV_LOG_ERROR, "Context failed.\n");
goto fail;
}
s->stream = pa_stream_new(s->ctx, stream_name, &sample_spec,
channel_map.channels ? &channel_map : NULL);
if ((ret = pulse_update_sink_info(h)) < 0) {
av_log(s, AV_LOG_ERROR, "Updating sink info failed.\n");
goto fail;
}
if (!s->stream) {
av_log(s, AV_LOG_ERROR, "Cannot create stream.\n");
ret = AVERROR(ENOMEM);
goto fail;
}
pa_stream_set_state_callback(s->stream, pulse_stream_state, s);
pa_stream_set_write_callback(s->stream, pulse_stream_writable, h);
pa_stream_set_overflow_callback(s->stream, pulse_overflow, h);
pa_stream_set_underflow_callback(s->stream, pulse_underflow, h);
if ((ret = pa_stream_connect_playback(s->stream, s->device, &buffer_attributes,
stream_flags, NULL, NULL)) < 0) {
av_log(s, AV_LOG_ERROR, "pa_stream_connect_playback failed: %s.\n", pa_strerror(ret));
ret = AVERROR_EXTERNAL;
goto fail;
}
if ((ret = pulse_stream_wait(s)) < 0) {
av_log(s, AV_LOG_ERROR, "Stream failed.\n");
goto fail;
}
pa_threaded_mainloop_unlock(s->mainloop);
if ((ret = pulse_subscribe_events(s)) < 0) {
av_log(s, AV_LOG_ERROR, "Event subscription failed.\n");
/* a bit ugly but the simplest to lock here*/
pa_threaded_mainloop_lock(s->mainloop);
goto fail;
}
/* force control messages */
s->mute = -1;
s->last_volume = PA_VOLUME_INVALID;
pa_threaded_mainloop_lock(s->mainloop);
if ((ret = pulse_update_sink_input_info(h)) < 0) {
av_log(s, AV_LOG_ERROR, "Updating sink input info failed.\n");
goto fail;
}
pa_threaded_mainloop_unlock(s->mainloop);
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
return 0;
}
static av_cold int pulse_write_trailer(AVFormatContext *h)
{
PulseData *s = h->priv_data;
pa_simple_flush(s->pa, NULL);
pa_simple_free(s->pa);
s->pa = NULL;
return 0;
fail:
pa_threaded_mainloop_unlock(s->mainloop);
pulse_write_trailer(h);
return ret;
}
static int pulse_write_packet(AVFormatContext *h, AVPacket *pkt)
{
PulseData *s = h->priv_data;
int error;
int ret;
if (!pkt) {
if (pa_simple_flush(s->pa, &error) < 0) {
av_log(s, AV_LOG_ERROR, "pa_simple_flush failed: %s\n", pa_strerror(error));
return AVERROR(EIO);
}
return 1;
}
if (!pkt)
return pulse_flash_stream(s);
if (pkt->dts != AV_NOPTS_VALUE)
s->timestamp = pkt->dts;
@ -133,12 +627,29 @@ static int pulse_write_packet(AVFormatContext *h, AVPacket *pkt)
s->timestamp += av_rescale_q(samples, r, st->time_base);
}
if (pa_simple_write(s->pa, pkt->data, pkt->size, &error) < 0) {
av_log(s, AV_LOG_ERROR, "pa_simple_write failed: %s\n", pa_strerror(error));
return AVERROR(EIO);
pa_threaded_mainloop_lock(s->mainloop);
if (!PA_STREAM_IS_GOOD(pa_stream_get_state(s->stream))) {
av_log(s, AV_LOG_ERROR, "PulseAudio stream is in invalid state.\n");
goto fail;
}
while (!pa_stream_writable_size(s->stream)) {
if (s->nonblocking) {
pa_threaded_mainloop_unlock(s->mainloop);
return AVERROR(EAGAIN);
} else
pa_threaded_mainloop_wait(s->mainloop);
}
if ((ret = pa_stream_write(s->stream, pkt->data, pkt->size, NULL, 0, PA_SEEK_RELATIVE)) < 0) {
av_log(s, AV_LOG_ERROR, "pa_stream_write failed: %s\n", pa_strerror(ret));
goto fail;
}
pa_threaded_mainloop_unlock(s->mainloop);
return 0;
fail:
pa_threaded_mainloop_unlock(s->mainloop);
return AVERROR_EXTERNAL;
}
static int pulse_write_frame(AVFormatContext *h, int stream_index,
@ -162,9 +673,13 @@ static int pulse_write_frame(AVFormatContext *h, int stream_index,
static void pulse_get_output_timestamp(AVFormatContext *h, int stream, int64_t *dts, int64_t *wall)
{
PulseData *s = h->priv_data;
pa_usec_t latency = pa_simple_get_latency(s->pa, NULL);
pa_usec_t latency;
int neg;
pa_threaded_mainloop_lock(s->mainloop);
pa_stream_get_latency(s->stream, &latency, &neg);
pa_threaded_mainloop_unlock(s->mainloop);
*wall = av_gettime();
*dts = s->timestamp - latency;
*dts = s->timestamp - (neg ? -latency : latency);
}
static int pulse_get_device_list(AVFormatContext *h, AVDeviceInfoList *device_list)
@ -173,21 +688,68 @@ static int pulse_get_device_list(AVFormatContext *h, AVDeviceInfoList *device_li
return ff_pulse_audio_get_devices(device_list, s->server, 1);
}
static int pulse_control_message(AVFormatContext *h, int type,
void *data, size_t data_size)
{
PulseData *s = h->priv_data;
int ret;
switch(type) {
case AV_APP_TO_DEV_PAUSE:
return pulse_set_pause(s, 1);
case AV_APP_TO_DEV_PLAY:
return pulse_set_pause(s, 0);
case AV_APP_TO_DEV_TOGGLE_PAUSE:
return pulse_set_pause(s, !pa_stream_is_corked(s->stream));
case AV_APP_TO_DEV_MUTE:
if (!s->mute) {
s->mute = 1;
return pulse_set_mute(s);
}
return 0;
case AV_APP_TO_DEV_UNMUTE:
if (s->mute) {
s->mute = 0;
return pulse_set_mute(s);
}
return 0;
case AV_APP_TO_DEV_TOGGLE_MUTE:
s->mute = !s->mute;
return pulse_set_mute(s);
case AV_APP_TO_DEV_SET_VOLUME:
return pulse_set_volume(s, *(double *)data);
case AV_APP_TO_DEV_GET_VOLUME:
s->last_volume = PA_VOLUME_INVALID;
pa_threaded_mainloop_lock(s->mainloop);
ret = pulse_update_sink_input_info(h);
pa_threaded_mainloop_unlock(s->mainloop);
return ret;
case AV_APP_TO_DEV_GET_MUTE:
s->mute = -1;
pa_threaded_mainloop_lock(s->mainloop);
ret = pulse_update_sink_input_info(h);
pa_threaded_mainloop_unlock(s->mainloop);
return ret;
default:
break;
}
return AVERROR(ENOSYS);
}
#define OFFSET(a) offsetof(PulseData, a)
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "server", "set PulseAudio server", OFFSET(server), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "name", "set application name", OFFSET(name), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, E },
{ "stream_name", "set stream description", OFFSET(stream_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "device", "set device name", OFFSET(device), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "buffer_size", "set buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ "buffer_duration", "set buffer duration in millisecs", OFFSET(buffer_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ "server", "set PulseAudio server", OFFSET(server), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "name", "set application name", OFFSET(name), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, E },
{ "stream_name", "set stream description", OFFSET(stream_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "device", "set device name", OFFSET(device), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "buffer_size", "set buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ "buffer_duration", "set buffer duration in millisecs", OFFSET(buffer_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ NULL }
};
static const AVClass pulse_muxer_class = {
.class_name = "Pulse muxer",
.class_name = "PulseAudio muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
@ -195,17 +757,18 @@ static const AVClass pulse_muxer_class = {
};
AVOutputFormat ff_pulse_muxer = {
.name = "pulse",
.long_name = NULL_IF_CONFIG_SMALL("Pulse audio output"),
.priv_data_size = sizeof(PulseData),
.audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
.video_codec = AV_CODEC_ID_NONE,
.write_header = pulse_write_header,
.write_packet = pulse_write_packet,
.write_uncoded_frame = pulse_write_frame,
.write_trailer = pulse_write_trailer,
.name = "pulse",
.long_name = NULL_IF_CONFIG_SMALL("Pulse audio output"),
.priv_data_size = sizeof(PulseData),
.audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
.video_codec = AV_CODEC_ID_NONE,
.write_header = pulse_write_header,
.write_packet = pulse_write_packet,
.write_uncoded_frame = pulse_write_frame,
.write_trailer = pulse_write_trailer,
.get_output_timestamp = pulse_get_output_timestamp,
.get_device_list = pulse_get_device_list,
.flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
.priv_class = &pulse_muxer_class,
.get_device_list = pulse_get_device_list,
.control_message = pulse_control_message,
.flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
.priv_class = &pulse_muxer_class,
};