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whisper : add whisper_state + default state on the whisper_context (#523)

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* Added whisper state + default state on the whisper_context

* Fixed some examples and bindings

* Fixed whisper_n_len (which was used in some binding) and added whisper_n_len_from_state

* Fixed comments

* whisper : reuse kv_cache_free() and fix compiler warnings

* whisper : clean-up the API comments

---------

Co-authored-by: Sandro Hanea <sandrohanea@microsoft.com>
Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
pull/569/head
sandrohanea 2 years ago committed by GitHub
parent 478289a4b3
commit 59fdcd19c8
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 701 additions and 453 deletions
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4
bindings/go/whisper.go
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@ -20,7 +20,7 @@ extern bool callEncoderBegin(void* user_data);
// Text segment callback // Text segment callback
// Called on every newly generated text segment // Called on every newly generated text segment
// Use the whisper_full_...() functions to obtain the text segments // Use the whisper_full_...() functions to obtain the text segments
static void whisper_new_segment_cb(struct whisper_context* ctx, int n_new, void* user_data) { static void whisper_new_segment_cb(struct whisper_context* ctx, struct whisper_state* state, int n_new, void* user_data) {
if(user_data != NULL && ctx != NULL) { if(user_data != NULL && ctx != NULL) {
callNewSegment(user_data, n_new); callNewSegment(user_data, n_new);
} }
@ -29,7 +29,7 @@ static void whisper_new_segment_cb(struct whisper_context* ctx, int n_new, void*
// Encoder begin callback // Encoder begin callback
// If not NULL, called before the encoder starts // If not NULL, called before the encoder starts
// If it returns false, the computation is aborted // If it returns false, the computation is aborted
static bool whisper_encoder_begin_cb(struct whisper_context* ctx, void* user_data) { static bool whisper_encoder_begin_cb(struct whisper_context* ctx, struct whisper_state* state, void* user_data) {
if(user_data != NULL && ctx != NULL) { if(user_data != NULL && ctx != NULL) {
return callEncoderBegin(user_data); return callEncoderBegin(user_data);
} }

2
bindings/ruby/ext/ruby_whisper.cpp
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@ -199,7 +199,7 @@ static VALUE ruby_whisper_transcribe(int argc, VALUE *argv, VALUE self) {
{ {
static bool is_aborted = false; // NOTE: this should be atomic to avoid data race static bool is_aborted = false; // NOTE: this should be atomic to avoid data race
rwp->params.encoder_begin_callback = [](struct whisper_context * /*ctx*/, void * user_data) { rwp->params.encoder_begin_callback = [](struct whisper_context * /*ctx*/, struct whisper_state * /*state*/, void * user_data) {
bool is_aborted = *(bool*)user_data; bool is_aborted = *(bool*)user_data;
return !is_aborted; return !is_aborted;
}; };

4
examples/addon.node/addon.cpp
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@ -72,7 +72,7 @@ int timestamp_to_sample(int64_t t, int n_samples) {
return std::max(0, std::min((int) n_samples - 1, (int) ((t*WHISPER_SAMPLE_RATE)/100))); return std::max(0, std::min((int) n_samples - 1, (int) ((t*WHISPER_SAMPLE_RATE)/100)));
} }
void whisper_print_segment_callback(struct whisper_context * ctx, int n_new, void * user_data) { void whisper_print_segment_callback(struct whisper_context * ctx, struct whisper_state * state, int n_new, void * user_data) {
const auto & params = *((whisper_print_user_data *) user_data)->params; const auto & params = *((whisper_print_user_data *) user_data)->params;
const auto & pcmf32s = *((whisper_print_user_data *) user_data)->pcmf32s; const auto & pcmf32s = *((whisper_print_user_data *) user_data)->pcmf32s;
@ -260,7 +260,7 @@ int run(whisper_params &params, std::vector<std::vector<std::string>> &result) {
{ {
static bool is_aborted = false; // NOTE: this should be atomic to avoid data race static bool is_aborted = false; // NOTE: this should be atomic to avoid data race
wparams.encoder_begin_callback = [](struct whisper_context * /*ctx*/, void * user_data) { wparams.encoder_begin_callback = [](struct whisper_context * /*ctx*/, struct whisper_state * /*state*/, void * user_data) {
bool is_aborted = *(bool*)user_data; bool is_aborted = *(bool*)user_data;
return !is_aborted; return !is_aborted;
}; };

4
examples/main/main.cpp
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@ -193,7 +193,7 @@ struct whisper_print_user_data {
const std::vector<std::vector<float>> * pcmf32s; const std::vector<std::vector<float>> * pcmf32s;
}; };
void whisper_print_segment_callback(struct whisper_context * ctx, int n_new, void * user_data) { void whisper_print_segment_callback(struct whisper_context * ctx, struct whisper_state * /*state*/, int n_new, void * user_data) {
const auto & params = *((whisper_print_user_data *) user_data)->params; const auto & params = *((whisper_print_user_data *) user_data)->params;
const auto & pcmf32s = *((whisper_print_user_data *) user_data)->pcmf32s; const auto & pcmf32s = *((whisper_print_user_data *) user_data)->pcmf32s;
@ -608,7 +608,7 @@ int main(int argc, char ** argv) {
{ {
static bool is_aborted = false; // NOTE: this should be atomic to avoid data race static bool is_aborted = false; // NOTE: this should be atomic to avoid data race
wparams.encoder_begin_callback = [](struct whisper_context * /*ctx*/, void * user_data) { wparams.encoder_begin_callback = [](struct whisper_context * /*ctx*/, struct whisper_state * /*state*/, void * user_data) {
bool is_aborted = *(bool*)user_data; bool is_aborted = *(bool*)user_data;
return !is_aborted; return !is_aborted;
}; };

980
whisper.cpp
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156
whisper.h
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@ -66,6 +66,7 @@ extern "C" {
// //
struct whisper_context; struct whisper_context;
struct whisper_state;
typedef int whisper_token; typedef int whisper_token;
@ -101,11 +102,20 @@ extern "C" {
WHISPER_API struct whisper_context * whisper_init_from_buffer(void * buffer, size_t buffer_size); WHISPER_API struct whisper_context * whisper_init_from_buffer(void * buffer, size_t buffer_size);
WHISPER_API struct whisper_context * whisper_init(struct whisper_model_loader * loader); WHISPER_API struct whisper_context * whisper_init(struct whisper_model_loader * loader);
// Frees all memory allocated by the model. // These are the same as the above, but the internal state of the context is not allocated automatically
WHISPER_API void whisper_free(struct whisper_context * ctx); // It is the responsibility of the caller to allocate the state using whisper_init_state() (#523)
WHISPER_API struct whisper_context * whisper_init_from_file_no_state(const char * path_model);
WHISPER_API struct whisper_context * whisper_init_from_buffer_no_state(void * buffer, size_t buffer_size);
WHISPER_API struct whisper_context * whisper_init_no_state(struct whisper_model_loader * loader);
WHISPER_API struct whisper_state * whisper_init_state(struct whisper_context * ctx);
// Frees all allocated memory
WHISPER_API void whisper_free (struct whisper_context * ctx);
WHISPER_API void whisper_free_state(struct whisper_state * state);
// Convert RAW PCM audio to log mel spectrogram. // Convert RAW PCM audio to log mel spectrogram.
// The resulting spectrogram is stored inside the provided whisper context. // The resulting spectrogram is stored inside the default state of the provided whisper context.
// Returns 0 on success // Returns 0 on success
WHISPER_API int whisper_pcm_to_mel( WHISPER_API int whisper_pcm_to_mel(
struct whisper_context * ctx, struct whisper_context * ctx,
@ -113,17 +123,30 @@ extern "C" {
int n_samples, int n_samples,
int n_threads); int n_threads);
WHISPER_API int whisper_pcm_to_mel_with_state(
struct whisper_context * ctx,
struct whisper_state * state,
const float * samples,
int n_samples,
int n_threads);
// Convert RAW PCM audio to log mel spectrogram but applies a Phase Vocoder to speed up the audio x2. // Convert RAW PCM audio to log mel spectrogram but applies a Phase Vocoder to speed up the audio x2.
// The resulting spectrogram is stored inside the provided whisper context. // The resulting spectrogram is stored inside the default state of the provided whisper context.
// Returns 0 on success // Returns 0 on success
WHISPER_API int whisper_pcm_to_mel_phase_vocoder( WHISPER_API int whisper_pcm_to_mel_phase_vocoder(
struct whisper_context* ctx, struct whisper_context * ctx,
const float* samples, const float * samples,
int n_samples, int n_samples,
int n_threads); int n_threads);
WHISPER_API int whisper_pcm_to_mel_phase_vocoder_with_state(
// This can be used to set a custom log mel spectrogram inside the provided whisper context. struct whisper_context * ctx,
struct whisper_state * state,
const float * samples,
int n_samples,
int n_threads);
// This can be used to set a custom log mel spectrogram inside the default state of the provided whisper context.
// Use this instead of whisper_pcm_to_mel() if you want to provide your own log mel spectrogram. // Use this instead of whisper_pcm_to_mel() if you want to provide your own log mel spectrogram.
// n_mel must be 80 // n_mel must be 80
// Returns 0 on success // Returns 0 on success
@ -133,7 +156,14 @@ extern "C" {
int n_len, int n_len,
int n_mel); int n_mel);
// Run the Whisper encoder on the log mel spectrogram stored inside the provided whisper context. WHISPER_API int whisper_set_mel_with_state(
struct whisper_context * ctx,
struct whisper_state * state,
const float * data,
int n_len,
int n_mel);
// Run the Whisper encoder on the log mel spectrogram stored inside the default state in the provided whisper context.
// Make sure to call whisper_pcm_to_mel() or whisper_set_mel() first. // Make sure to call whisper_pcm_to_mel() or whisper_set_mel() first.
// offset can be used to specify the offset of the first frame in the spectrogram. // offset can be used to specify the offset of the first frame in the spectrogram.
// Returns 0 on success // Returns 0 on success
@ -142,6 +172,12 @@ extern "C" {
int offset, int offset,
int n_threads); int n_threads);
WHISPER_API int whisper_encode_with_state(
struct whisper_context * ctx,
struct whisper_state * state,
int offset,
int n_threads);
// Run the Whisper decoder to obtain the logits and probabilities for the next token. // Run the Whisper decoder to obtain the logits and probabilities for the next token.
// Make sure to call whisper_encode() first. // Make sure to call whisper_encode() first.
// tokens + n_tokens is the provided context for the decoder. // tokens + n_tokens is the provided context for the decoder.
@ -155,6 +191,14 @@ extern "C" {
int n_past, int n_past,
int n_threads); int n_threads);
WHISPER_API int whisper_decode_with_state(
struct whisper_context * ctx,
struct whisper_state * state,
const whisper_token * tokens,
int n_tokens,
int n_past,
int n_threads);
// Convert the provided text into tokens. // Convert the provided text into tokens.
// The tokens pointer must be large enough to hold the resulting tokens. // The tokens pointer must be large enough to hold the resulting tokens.
// Returns the number of tokens on success, no more than n_max_tokens // Returns the number of tokens on success, no more than n_max_tokens
@ -190,17 +234,26 @@ extern "C" {
int n_threads, int n_threads,
float * lang_probs); float * lang_probs);
WHISPER_API int whisper_n_len (struct whisper_context * ctx); // mel length WHISPER_API int whisper_lang_auto_detect_with_state(
WHISPER_API int whisper_n_vocab (struct whisper_context * ctx); struct whisper_context * ctx,
WHISPER_API int whisper_n_text_ctx (struct whisper_context * ctx); struct whisper_state * state,
WHISPER_API int whisper_n_audio_ctx (struct whisper_context * ctx); int offset_ms,
WHISPER_API int whisper_is_multilingual(struct whisper_context * ctx); int n_threads,
float * lang_probs);
WHISPER_API int whisper_n_len (struct whisper_context * ctx); // mel length
WHISPER_API int whisper_n_len_from_state(struct whisper_state * state); // mel length
WHISPER_API int whisper_n_vocab (struct whisper_context * ctx);
WHISPER_API int whisper_n_text_ctx (struct whisper_context * ctx);
WHISPER_API int whisper_n_audio_ctx (struct whisper_context * ctx);
WHISPER_API int whisper_is_multilingual (struct whisper_context * ctx);
// Token logits obtained from the last call to whisper_decode() // Token logits obtained from the last call to whisper_decode()
// The logits for the last token are stored in the last row // The logits for the last token are stored in the last row
// Rows: n_tokens // Rows: n_tokens
// Cols: n_vocab // Cols: n_vocab
WHISPER_API float * whisper_get_logits(struct whisper_context * ctx); WHISPER_API float * whisper_get_logits (struct whisper_context * ctx);
WHISPER_API float * whisper_get_logits_from_state(struct whisper_state * state);
// Token Id -> String. Uses the vocabulary in the provided context // Token Id -> String. Uses the vocabulary in the provided context
WHISPER_API const char * whisper_token_to_str(struct whisper_context * ctx, whisper_token token); WHISPER_API const char * whisper_token_to_str(struct whisper_context * ctx, whisper_token token);
@ -218,7 +271,7 @@ extern "C" {
WHISPER_API whisper_token whisper_token_translate (void); WHISPER_API whisper_token whisper_token_translate (void);
WHISPER_API whisper_token whisper_token_transcribe(void); WHISPER_API whisper_token whisper_token_transcribe(void);
// Performance information // Performance information from the default state.
WHISPER_API void whisper_print_timings(struct whisper_context * ctx); WHISPER_API void whisper_print_timings(struct whisper_context * ctx);
WHISPER_API void whisper_reset_timings(struct whisper_context * ctx); WHISPER_API void whisper_reset_timings(struct whisper_context * ctx);
@ -236,18 +289,19 @@ extern "C" {
// Text segment callback // Text segment callback
// Called on every newly generated text segment // Called on every newly generated text segment
// Use the whisper_full_...() functions to obtain the text segments // Use the whisper_full_...() functions to obtain the text segments
typedef void (*whisper_new_segment_callback)(struct whisper_context * ctx, int n_new, void * user_data); typedef void (*whisper_new_segment_callback)(struct whisper_context * ctx, struct whisper_state * state, int n_new, void * user_data);
// Encoder begin callback // Encoder begin callback
// If not NULL, called before the encoder starts // If not NULL, called before the encoder starts
// If it returns false, the computation is aborted // If it returns false, the computation is aborted
typedef bool (*whisper_encoder_begin_callback)(struct whisper_context * ctx, void * user_data); typedef bool (*whisper_encoder_begin_callback)(struct whisper_context * ctx, struct whisper_state * state, void * user_data);
// Logits filter callback // Logits filter callback
// Can be used to modify the logits before sampling // Can be used to modify the logits before sampling
// If not NULL, called after applying temperature to logits // If not NULL, called after applying temperature to logits
typedef void (*whisper_logits_filter_callback)( typedef void (*whisper_logits_filter_callback)(
struct whisper_context * ctx, struct whisper_context * ctx,
struct whisper_state * state,
const whisper_token_data * tokens, const whisper_token_data * tokens,
int n_tokens, int n_tokens,
float * logits, float * logits,
@ -334,6 +388,7 @@ extern "C" {
WHISPER_API struct whisper_full_params whisper_full_default_params(enum whisper_sampling_strategy strategy); WHISPER_API struct whisper_full_params whisper_full_default_params(enum whisper_sampling_strategy strategy);
// Run the entire model: PCM -> log mel spectrogram -> encoder -> decoder -> text // Run the entire model: PCM -> log mel spectrogram -> encoder -> decoder -> text
// Not thread safe for same context
// Uses the specified decoding strategy to obtain the text. // Uses the specified decoding strategy to obtain the text.
WHISPER_API int whisper_full( WHISPER_API int whisper_full(
struct whisper_context * ctx, struct whisper_context * ctx,
@ -341,7 +396,16 @@ extern "C" {
const float * samples, const float * samples,
int n_samples); int n_samples);
// Split the input audio in chunks and process each chunk separately using whisper_full() WHISPER_API int whisper_full_with_state(
struct whisper_context * ctx,
struct whisper_state * state,
struct whisper_full_params params,
const float * samples,
int n_samples);
// Split the input audio in chunks and process each chunk separately using whisper_full_with_state()
// Result is stored in the default state of the context
// Not thread safe if executed in parallel on the same context.
// It seems this approach can offer some speedup in some cases. // It seems this approach can offer some speedup in some cases.
// However, the transcription accuracy can be worse at the beginning and end of each chunk. // However, the transcription accuracy can be worse at the beginning and end of each chunk.
WHISPER_API int whisper_full_parallel( WHISPER_API int whisper_full_parallel(
@ -351,33 +415,47 @@ extern "C" {
int n_samples, int n_samples,
int n_processors); int n_processors);
// Number of generated text segments. // Number of generated text segments
// A segment can be a few words, a sentence, or even a paragraph. // A segment can be a few words, a sentence, or even a paragraph.
WHISPER_API int whisper_full_n_segments(struct whisper_context * ctx); WHISPER_API int whisper_full_n_segments (struct whisper_context * ctx);
WHISPER_API int whisper_full_n_segments_from_state(struct whisper_state * state);
// Language id associated with the current context // Language id associated with the context's default state
WHISPER_API int whisper_full_lang_id(struct whisper_context * ctx); WHISPER_API int whisper_full_lang_id(struct whisper_context * ctx);
// Get the start and end time of the specified segment. // Language id associated with the provided state
WHISPER_API int64_t whisper_full_get_segment_t0(struct whisper_context * ctx, int i_segment); WHISPER_API int whisper_full_lang_id_from_state(struct whisper_state * state);
WHISPER_API int64_t whisper_full_get_segment_t1(struct whisper_context * ctx, int i_segment);
// Get the start and end time of the specified segment
WHISPER_API int64_t whisper_full_get_segment_t0 (struct whisper_context * ctx, int i_segment);
WHISPER_API int64_t whisper_full_get_segment_t0_from_state(struct whisper_state * state, int i_segment);
WHISPER_API int64_t whisper_full_get_segment_t1 (struct whisper_context * ctx, int i_segment);
WHISPER_API int64_t whisper_full_get_segment_t1_from_state(struct whisper_state * state, int i_segment);
// Get the text of the specified segment
WHISPER_API const char * whisper_full_get_segment_text (struct whisper_context * ctx, int i_segment);
WHISPER_API const char * whisper_full_get_segment_text_from_state(struct whisper_state * state, int i_segment);
// Get the text of the specified segment. // Get number of tokens in the specified segment
WHISPER_API const char * whisper_full_get_segment_text(struct whisper_context * ctx, int i_segment); WHISPER_API int whisper_full_n_tokens (struct whisper_context * ctx, int i_segment);
WHISPER_API int whisper_full_n_tokens_from_state(struct whisper_state * state, int i_segment);
// Get number of tokens in the specified segment. // Get the token text of the specified token in the specified segment
WHISPER_API int whisper_full_n_tokens(struct whisper_context * ctx, int i_segment); WHISPER_API const char * whisper_full_get_token_text (struct whisper_context * ctx, int i_segment, int i_token);
WHISPER_API const char * whisper_full_get_token_text_from_state(struct whisper_context * ctx, struct whisper_state * state, int i_segment, int i_token);
// Get the token text of the specified token in the specified segment. WHISPER_API whisper_token whisper_full_get_token_id (struct whisper_context * ctx, int i_segment, int i_token);
WHISPER_API const char * whisper_full_get_token_text(struct whisper_context * ctx, int i_segment, int i_token); WHISPER_API whisper_token whisper_full_get_token_id_from_state(struct whisper_state * state, int i_segment, int i_token);
WHISPER_API whisper_token whisper_full_get_token_id (struct whisper_context * ctx, int i_segment, int i_token);
// Get token data for the specified token in the specified segment. // Get token data for the specified token in the specified segment
// This contains probabilities, timestamps, etc. // This contains probabilities, timestamps, etc.
WHISPER_API whisper_token_data whisper_full_get_token_data(struct whisper_context * ctx, int i_segment, int i_token); WHISPER_API whisper_token_data whisper_full_get_token_data (struct whisper_context * ctx, int i_segment, int i_token);
WHISPER_API whisper_token_data whisper_full_get_token_data_from_state(struct whisper_state * state, int i_segment, int i_token);
// Get the probability of the specified token in the specified segment. // Get the probability of the specified token in the specified segment
WHISPER_API float whisper_full_get_token_p(struct whisper_context * ctx, int i_segment, int i_token); WHISPER_API float whisper_full_get_token_p (struct whisper_context * ctx, int i_segment, int i_token);
WHISPER_API float whisper_full_get_token_p_from_state(struct whisper_state * state, int i_segment, int i_token);
//////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////

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