ExternalVendorCode/whisper.cpp
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whisper : fix usage of extenral encoders (e.g. CoreML)

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Georgi Gerganov 2024-02-12 15:19:59 +02:00
parent 551529290d
commit 74c260fe34
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1 changed files with 18 additions and 18 deletions
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whisper.cpp
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@ -1659,25 +1659,19 @@ static struct ggml_cgraph * whisper_build_graph_conv(
ggml_set_name(cur, "embd_conv");
wstate.embd_conv = cur;
} else {
#ifdef WHISPER_USE_COREML
// keep the "mel" tensor alive - we will use it to store the input data for the external encoders
// TODO: is there a better way to do this
mel = ggml_scale(ctx0, mel, 1.0f);
ggml_build_forward_expand(gf, mel);
cur = ggml_new_tensor_2d(ctx0, GGML_TYPE_F32, n_state, n_ctx);
ggml_allocr_alloc(alloc, cur);
if (!ggml_allocr_is_measure(alloc)) {
whisper_coreml_encode(wstate.ctx_coreml, mel->ne[0], mel->ne[1], (float *) mel->data, (float *) cur->data);
}
#endif
#ifdef WHISPER_USE_OPENVINO
cur = ggml_new_tensor_2d(ctx0, GGML_TYPE_F32, n_state, n_ctx);
ggml_allocr_alloc(alloc, cur);
if (!ggml_allocr_is_measure(alloc)) {
whisper_openvino_encode(wstate.ctx_openvino, mel, cur);
}
#endif
ggml_set_name(cur, "embd_enc");
ggml_set_output(cur);
wstate.embd_enc = cur;
// TODO: without this op, the "embd_enc" tensor ends up being not allocated
// is there a better fix?
cur = ggml_scale(ctx0, cur, 1.0f);
}
ggml_build_forward_expand(gf, cur);
@ -2037,13 +2031,13 @@ static bool whisper_encode_internal(
return false;
}
struct ggml_tensor * mel = ggml_graph_get_tensor(gf, "mel");
// set the input
{
const auto & mel_inp = wstate.mel;
const int n_ctx = wstate.exp_n_audio_ctx > 0 ? wstate.exp_n_audio_ctx : wctx.model.hparams.n_audio_ctx;
struct ggml_tensor * mel = ggml_graph_get_tensor(gf, "mel");
assert(mel->type == GGML_TYPE_F32);
assert(mel_inp.n_mel == wctx.model.hparams.n_mels);
@ -2068,6 +2062,12 @@ static bool whisper_encode_internal(
if (!ggml_graph_compute_helper(wstate.backend, gf, n_threads)) {
return false;
}
} else {
#if defined(WHISPER_USE_COREML)
whisper_coreml_encode(wstate.ctx_coreml, mel->ne[0], mel->ne[1], (float *) mel->data, (float *) wstate.embd_enc->data);
#elif defined(WHISPER_USE_OPENVINO)
whisper_openvino_encode(wstate.ctx_openvino, mel, wstate.embd_enc);
#endif
}
}