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Merge pull request #319 from cmusphinx/live_examples
Include examples of live recognition on various platforms
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| /* Example of simple PocketSphinx speech segmentation. | ||
| * | ||
| * MIT license (c) 2022, see LICENSE for more information. | ||
| * | ||
| * Author: David Huggins-Daines <[email protected]> | ||
| */ | ||
| /** | ||
| * @example live_portaudio.c | ||
| * @brief Speech recognition with live audio input and endpointing. | ||
| * | ||
| * This file shows how to use PocketSphinx with microphone input using | ||
| * PortAudio (v19 and above). | ||
| * | ||
| * To compile it, assuming you have built the library as in | ||
| * \ref unix_install "these directions", you can run: | ||
| * | ||
| * cmake --build build --target live_portaudio | ||
| * | ||
| * Alternately, if PocketSphinx is installed system-wide, you can run: | ||
| * | ||
| * gcc -o live_portaudio live_portaudio.c \ | ||
| * $(pkg-config --libs --cflags pocketsphinx portaudio-2.0) | ||
| * | ||
| * | ||
| */ | ||
| #include <portaudio.h> | ||
| #include <pocketsphinx.h> | ||
| #include <signal.h> | ||
|
|
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| static int global_done = 0; | ||
| static void | ||
| catch_sig(int signum) | ||
| { | ||
| (void)signum; | ||
| global_done = 1; | ||
| } | ||
|
|
||
| int | ||
| main(int argc, char *argv[]) | ||
| { | ||
|
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| PaStream *stream; | ||
| PaError err; | ||
| ps_decoder_t *decoder; | ||
| ps_config_t *config; | ||
| ps_endpointer_t *ep; | ||
| short *frame; | ||
| size_t frame_size; | ||
|
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| (void)argc; (void)argv; | ||
|
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| config = ps_config_init(NULL); | ||
| ps_default_search_args(config); | ||
|
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| if ((err = Pa_Initialize()) != paNoError) | ||
| E_FATAL("Failed to initialize PortAudio: %s\n", | ||
| Pa_GetErrorText(err)); | ||
| if ((decoder = ps_init(config)) == NULL) | ||
| E_FATAL("PocketSphinx decoder init failed\n"); | ||
| if ((ep = ps_endpointer_init(0, 0.0, 0, 0, 0)) == NULL) | ||
| E_FATAL("PocketSphinx endpointer init failed\n"); | ||
| frame_size = ps_endpointer_frame_size(ep); | ||
| if ((frame = malloc(frame_size * sizeof(frame[0]))) == NULL) | ||
| E_FATAL_SYSTEM("Failed to allocate frame"); | ||
| if ((err = Pa_OpenDefaultStream(&stream, 1, 0, paInt16, | ||
| ps_config_int(config, "samprate"), | ||
| frame_size, NULL, NULL)) != paNoError) | ||
| E_FATAL("Failed to open PortAudio stream: %s\n", | ||
| Pa_GetErrorText(err)); | ||
| if ((err = Pa_StartStream(stream)) != paNoError) | ||
| E_FATAL("Failed to start PortAudio stream: %s\n", | ||
| Pa_GetErrorText(err)); | ||
| if (signal(SIGINT, catch_sig) == SIG_ERR) | ||
| E_FATAL_SYSTEM("Failed to set SIGINT handler"); | ||
| while (!global_done) { | ||
| const int16 *speech; | ||
| int prev_in_speech = ps_endpointer_in_speech(ep); | ||
| if ((err = Pa_ReadStream(stream, frame, frame_size)) != paNoError) { | ||
| E_ERROR("Error in PortAudio read: %s\n", | ||
| Pa_GetErrorText(err)); | ||
| break; | ||
| } | ||
| speech = ps_endpointer_process(ep, frame); | ||
| if (speech != NULL) { | ||
| const char *hyp; | ||
| if (!prev_in_speech) { | ||
| fprintf(stderr, "Speech start at %.2f\n", | ||
| ps_endpointer_speech_start(ep)); | ||
| fflush(stderr); /* For broken MSYS2 terminal */ | ||
| ps_start_utt(decoder); | ||
| } | ||
| if (ps_process_raw(decoder, speech, frame_size, FALSE, FALSE) < 0) | ||
| E_FATAL("ps_process_raw() failed\n"); | ||
| if ((hyp = ps_get_hyp(decoder, NULL)) != NULL) { | ||
| fprintf(stderr, "PARTIAL RESULT: %s\n", hyp); | ||
| fflush(stderr); | ||
| } | ||
| if (!ps_endpointer_in_speech(ep)) { | ||
| fprintf(stderr, "Speech end at %.2f\n", | ||
| ps_endpointer_speech_end(ep)); | ||
| fflush(stderr); | ||
| ps_end_utt(decoder); | ||
| if ((hyp = ps_get_hyp(decoder, NULL)) != NULL) { | ||
| printf("%s\n", hyp); | ||
| fflush(stdout); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| if ((err = Pa_StopStream(stream)) != paNoError) | ||
| E_FATAL("Failed to stop PortAudio stream: %s\n", | ||
| Pa_GetErrorText(err)); | ||
| if ((err = Pa_Terminate()) != paNoError) | ||
| E_FATAL("Failed to terminate PortAudio: %s\n", | ||
| Pa_GetErrorText(err)); | ||
| free(frame); | ||
| ps_endpointer_free(ep); | ||
| ps_free(decoder); | ||
| ps_config_free(config); | ||
|
|
||
| return 0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| /* Example of simple PocketSphinx speech segmentation. | ||
| * | ||
| * MIT license (c) 2022, see LICENSE for more information. | ||
| * | ||
| * Author: David Huggins-Daines <[email protected]> | ||
| */ | ||
| /** | ||
| * @example live_pulseaudio.c | ||
| * @brief Speech recognition with live audio input and endpointing. | ||
| * | ||
| * This file shows how to use PocketSphinx with microphone input using | ||
| * PulseAudio. | ||
| * | ||
| * To compile it, assuming you have built the library as in | ||
| * \ref unix_install "these directions", you can run: | ||
| * | ||
| * cmake --build build --target live_pulseaudio | ||
| * | ||
| * Alternately, if PocketSphinx is installed system-wide, you can run: | ||
| * | ||
| * gcc -o live_pulseaudio live_pulseaudio.c \ | ||
| * $(pkg-config --libs --cflags pocketsphinx libpulse-simple) | ||
| * | ||
| * | ||
| */ | ||
| #include <pulse/simple.h> | ||
| #include <pulse/error.h> | ||
| #include <pocketsphinx.h> | ||
| #include <signal.h> | ||
|
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| static int global_done = 0; | ||
| static void | ||
| catch_sig(int signum) | ||
| { | ||
| (void)signum; | ||
| global_done = 1; | ||
| } | ||
|
|
||
| int | ||
| main(int argc, char *argv[]) | ||
| { | ||
|
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| pa_simple *s; | ||
| pa_sample_spec ss; | ||
| int err; | ||
| ps_decoder_t *decoder; | ||
| ps_config_t *config; | ||
| ps_endpointer_t *ep; | ||
| short *frame; | ||
| size_t frame_size; | ||
|
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| (void)argc; (void)argv; | ||
|
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| config = ps_config_init(NULL); | ||
| ps_default_search_args(config); | ||
| if ((decoder = ps_init(config)) == NULL) | ||
| E_FATAL("PocketSphinx decoder init failed\n"); | ||
| if ((ep = ps_endpointer_init(0, 0.0, 0, 0, 0)) == NULL) | ||
| E_FATAL("PocketSphinx endpointer init failed\n"); | ||
| frame_size = ps_endpointer_frame_size(ep); | ||
| if ((frame = malloc(frame_size * sizeof(frame[0]))) == NULL) | ||
| E_FATAL_SYSTEM("Failed to allocate frame"); | ||
|
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| ss.format = PA_SAMPLE_S16NE; | ||
| ss.channels = 1; | ||
| ss.rate = ps_config_int(config, "samprate"); | ||
| if ((s = pa_simple_new(NULL, "live_pulseaudio", PA_STREAM_RECORD, NULL, | ||
| "live", &ss, NULL, NULL, &err)) == NULL) | ||
| E_FATAL("Failed to connect to PulseAudio: %s\n", | ||
| pa_strerror(err)); | ||
| if (signal(SIGINT, catch_sig) == SIG_ERR) | ||
| E_FATAL_SYSTEM("Failed to set SIGINT handler"); | ||
| while (!global_done) { | ||
| const int16 *speech; | ||
| int prev_in_speech = ps_endpointer_in_speech(ep); | ||
| if (pa_simple_read(s, frame, | ||
| frame_size * sizeof(frame[0]), &err) < 0) { | ||
| E_ERROR("Error in pa_simple_read: %s\n", | ||
| pa_strerror(err)); | ||
| break; | ||
| } | ||
| speech = ps_endpointer_process(ep, frame); | ||
| if (speech != NULL) { | ||
| const char *hyp; | ||
| if (!prev_in_speech) { | ||
| fprintf(stderr, "Speech start at %.2f\n", | ||
| ps_endpointer_speech_start(ep)); | ||
| ps_start_utt(decoder); | ||
| } | ||
| if (ps_process_raw(decoder, speech, frame_size, FALSE, FALSE) < 0) | ||
| E_FATAL("ps_process_raw() failed\n"); | ||
| if ((hyp = ps_get_hyp(decoder, NULL)) != NULL) | ||
| fprintf(stderr, "PARTIAL RESULT: %s\n", hyp); | ||
| if (!ps_endpointer_in_speech(ep)) { | ||
| fprintf(stderr, "Speech end at %.2f\n", | ||
| ps_endpointer_speech_end(ep)); | ||
| ps_end_utt(decoder); | ||
| if ((hyp = ps_get_hyp(decoder, NULL)) != NULL) | ||
| printf("%s\n", hyp); | ||
| } | ||
| } | ||
| } | ||
| pa_simple_free(s); | ||
| free(frame); | ||
| ps_endpointer_free(ep); | ||
| ps_free(decoder); | ||
| ps_config_free(config); | ||
|
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||
| return 0; | ||
| } |
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