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@@ -15,14 +15,20 @@
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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+#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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-#include "sherpa-ncnn/c-api/c-api.h"
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+#include <string>
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+#include <cctype> // std::tolower
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+#include "sherpa-ncnn/csrc/display.h"
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+#include "sherpa-ncnn/csrc/recognizer.h"
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/*
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+ * The MIT License (MIT)
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+ *
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* Copyright (c) 2010 Nicolas George
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* Copyright (c) 2011 Stefano Sabatini
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* Copyright (c) 2012 Clément Bœsch
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@@ -58,18 +64,19 @@
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#ifdef __cplusplus
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extern "C" {
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#endif
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-#include <libavutil/samplefmt.h>
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#include <libavcodec/avcodec.h>
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-#include <libavformat/avformat.h>
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#include <libavfilter/buffersink.h>
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#include <libavfilter/buffersrc.h>
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+#include <libavformat/avformat.h>
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#include <libavutil/channel_layout.h>
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#include <libavutil/opt.h>
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+#include <libavutil/samplefmt.h>
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#ifdef __cplusplus
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}
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#endif
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-static const char *filter_descr = "aresample=16000,aformat=sample_fmts=s16:channel_layouts=mono";
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+static const char *filter_descr =
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+ "aresample=16000,aformat=sample_fmts=s16:channel_layouts=mono";
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static AVFormatContext *fmt_ctx;
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static AVCodecContext *dec_ctx;
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@@ -78,352 +85,386 @@ AVFilterContext *buffersrc_ctx;
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AVFilterGraph *filter_graph;
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static int audio_stream_index = -1;
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-static int open_input_file(const char *filename)
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-{
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- const AVCodec *dec;
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- int ret;
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+static int open_input_file(const char *filename) {
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+ const AVCodec *dec;
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+ int ret;
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- if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot open input file %s\n", filename);
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- return ret;
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- }
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+ if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot open input file %s\n", filename);
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+ return ret;
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+ }
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- if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
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- return ret;
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- }
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+ if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
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+ return ret;
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+ }
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- /* select the audio stream */
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- ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, &dec, 0);
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- if (ret < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot find an audio stream in the input file\n");
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- return ret;
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- }
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- audio_stream_index = ret;
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-
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- /* create decoding context */
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- dec_ctx = avcodec_alloc_context3(dec);
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- if (!dec_ctx)
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- return AVERROR(ENOMEM);
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- avcodec_parameters_to_context(dec_ctx, fmt_ctx->streams[audio_stream_index]->codecpar);
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-
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- /* init the audio decoder */
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- if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot open audio decoder\n");
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- return ret;
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- }
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+ /* select the audio stream */
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+ ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, &dec, 0);
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+ if (ret < 0) {
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+ av_log(NULL, AV_LOG_ERROR,
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+ "Cannot find an audio stream in the input file\n");
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+ return ret;
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+ }
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+ audio_stream_index = ret;
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+
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+ /* create decoding context */
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+ dec_ctx = avcodec_alloc_context3(dec);
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+ if (!dec_ctx) return AVERROR(ENOMEM);
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+ avcodec_parameters_to_context(dec_ctx,
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+ fmt_ctx->streams[audio_stream_index]->codecpar);
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+
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+ /* init the audio decoder */
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+ if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot open audio decoder\n");
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+ return ret;
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+ }
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- return 0;
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+ return 0;
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}
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-static int init_filters(const char *filters_descr)
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-{
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- char args[512];
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- int ret = 0;
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- const AVFilter *abuffersrc = avfilter_get_by_name("abuffer");
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- const AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
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- AVFilterInOut *outputs = avfilter_inout_alloc();
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- AVFilterInOut *inputs = avfilter_inout_alloc();
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- static const enum AVSampleFormat out_sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
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- static const int out_sample_rates[] = { 16000, -1 };
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- const AVFilterLink *outlink;
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- AVRational time_base = fmt_ctx->streams[audio_stream_index]->time_base;
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-
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- filter_graph = avfilter_graph_alloc();
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- if (!outputs || !inputs || !filter_graph) {
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- ret = AVERROR(ENOMEM);
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- goto end;
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- }
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+static int init_filters(const char *filters_descr) {
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+ char args[512];
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+ int ret = 0;
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+ const AVFilter *abuffersrc = avfilter_get_by_name("abuffer");
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+ const AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
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+ AVFilterInOut *outputs = avfilter_inout_alloc();
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+ AVFilterInOut *inputs = avfilter_inout_alloc();
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+ static const enum AVSampleFormat out_sample_fmts[] = {AV_SAMPLE_FMT_S16,
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+ AV_SAMPLE_FMT_NONE};
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+ static const int out_sample_rates[] = {16000, -1};
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+ const AVFilterLink *outlink;
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+ AVRational time_base = fmt_ctx->streams[audio_stream_index]->time_base;
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+
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+ filter_graph = avfilter_graph_alloc();
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+ if (!outputs || !inputs || !filter_graph) {
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+ ret = AVERROR(ENOMEM);
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+ goto end;
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+ }
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+
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+ /* buffer audio source: the decoded frames from the decoder will be inserted
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+ * here. */
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+ if (dec_ctx->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
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+ av_channel_layout_default(&dec_ctx->ch_layout,
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+ dec_ctx->ch_layout.nb_channels);
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+ ret = snprintf(args, sizeof(args),
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+ "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=",
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+ time_base.num, time_base.den, dec_ctx->sample_rate,
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+ av_get_sample_fmt_name(dec_ctx->sample_fmt));
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+ av_channel_layout_describe(&dec_ctx->ch_layout, args + ret,
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+ sizeof(args) - ret);
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+ ret = avfilter_graph_create_filter(&buffersrc_ctx, abuffersrc, "in", args,
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+ NULL, filter_graph);
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+ if (ret < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer source\n");
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+ goto end;
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+ }
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+
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+ /* buffer audio sink: to terminate the filter chain. */
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+ ret = avfilter_graph_create_filter(&buffersink_ctx, abuffersink, "out", NULL,
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+ NULL, filter_graph);
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+ if (ret < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer sink\n");
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+ goto end;
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+ }
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+
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+ ret = av_opt_set_int_list(buffersink_ctx, "sample_fmts", out_sample_fmts, -1,
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+ AV_OPT_SEARCH_CHILDREN);
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+ if (ret < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot set output sample format\n");
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+ goto end;
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+ }
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+
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+ ret =
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+ av_opt_set(buffersink_ctx, "ch_layouts", "mono", AV_OPT_SEARCH_CHILDREN);
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+ if (ret < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot set output channel layout\n");
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+ goto end;
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+ }
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+
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+ ret = av_opt_set_int_list(buffersink_ctx, "sample_rates", out_sample_rates,
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+ -1, AV_OPT_SEARCH_CHILDREN);
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+ if (ret < 0) {
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+ av_log(NULL, AV_LOG_ERROR, "Cannot set output sample rate\n");
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+ goto end;
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+ }
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+
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+ /*
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+ * Set the endpoints for the filter graph. The filter_graph will
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+ * be linked to the graph described by filters_descr.
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+ */
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+
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+ /*
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+ * The buffer source output must be connected to the input pad of
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+ * the first filter described by filters_descr; since the first
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+ * filter input label is not specified, it is set to "in" by
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+ * default.
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+ */
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+ outputs->name = av_strdup("in");
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+ outputs->filter_ctx = buffersrc_ctx;
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+ outputs->pad_idx = 0;
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+ outputs->next = NULL;
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+
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+ /*
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+ * The buffer sink input must be connected to the output pad of
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+ * the last filter described by filters_descr; since the last
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+ * filter output label is not specified, it is set to "out" by
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+ * default.
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+ */
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+ inputs->name = av_strdup("out");
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+ inputs->filter_ctx = buffersink_ctx;
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+ inputs->pad_idx = 0;
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+ inputs->next = NULL;
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+
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+ if ((ret = avfilter_graph_parse_ptr(filter_graph, filters_descr, &inputs,
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+ &outputs, NULL)) < 0)
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+ goto end;
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+
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+ if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0) goto end;
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+
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+ /* Print summary of the sink buffer
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+ * Note: args buffer is reused to store channel layout string */
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+ outlink = buffersink_ctx->inputs[0];
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+ av_channel_layout_describe(&outlink->ch_layout, args, sizeof(args));
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+ av_log(NULL, AV_LOG_INFO, "Output: srate:%dHz fmt:%s chlayout:%s\n",
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+ (int)outlink->sample_rate,
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+ (char *)av_x_if_null(
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+ av_get_sample_fmt_name((AVSampleFormat)outlink->format), "?"),
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+ args);
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- /* buffer audio source: the decoded frames from the decoder will be inserted here. */
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- if (dec_ctx->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
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- av_channel_layout_default(&dec_ctx->ch_layout, dec_ctx->ch_layout.nb_channels);
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- ret = snprintf(args, sizeof(args),
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- "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=",
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- time_base.num, time_base.den, dec_ctx->sample_rate,
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- av_get_sample_fmt_name(dec_ctx->sample_fmt));
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- av_channel_layout_describe(&dec_ctx->ch_layout, args + ret, sizeof(args) - ret);
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- ret = avfilter_graph_create_filter(&buffersrc_ctx, abuffersrc, "in",
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- args, NULL, filter_graph);
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- if (ret < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer source\n");
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- goto end;
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- }
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+end:
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+ avfilter_inout_free(&inputs);
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+ avfilter_inout_free(&outputs);
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- /* buffer audio sink: to terminate the filter chain. */
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- ret = avfilter_graph_create_filter(&buffersink_ctx, abuffersink, "out",
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- NULL, NULL, filter_graph);
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- if (ret < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer sink\n");
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- goto end;
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- }
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+ return ret;
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+}
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- ret = av_opt_set_int_list(buffersink_ctx, "sample_fmts", out_sample_fmts, -1,
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- AV_OPT_SEARCH_CHILDREN);
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- if (ret < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot set output sample format\n");
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- goto end;
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- }
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+static void sherpa_decode_frame(const AVFrame *frame,
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+ const sherpa_ncnn::Recognizer &recognizer,
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+ sherpa_ncnn::Stream *s,
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+ sherpa_ncnn::Display &display,
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+ std::string &last_text,
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+ int32_t &segment_index) {
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+#define N 3200 // 0.2 s. Sample rate is fixed to 16 kHz
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+ static float samples[N];
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+ static int nb_samples = 0;
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+ const int16_t *p = (int16_t *)frame->data[0];
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- ret = av_opt_set(buffersink_ctx, "ch_layouts", "mono",
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- AV_OPT_SEARCH_CHILDREN);
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- if (ret < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot set output channel layout\n");
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- goto end;
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- }
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+ if (frame->nb_samples + nb_samples >= N) {
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+ s->AcceptWaveform(16000, samples, nb_samples);
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- ret = av_opt_set_int_list(buffersink_ctx, "sample_rates", out_sample_rates, -1,
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- AV_OPT_SEARCH_CHILDREN);
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- if (ret < 0) {
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- av_log(NULL, AV_LOG_ERROR, "Cannot set output sample rate\n");
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- goto end;
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+ while (recognizer.IsReady(s)) {
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+ recognizer.DecodeStream(s);
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}
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- /*
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- * Set the endpoints for the filter graph. The filter_graph will
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- * be linked to the graph described by filters_descr.
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- */
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-
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- /*
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- * The buffer source output must be connected to the input pad of
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- * the first filter described by filters_descr; since the first
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- * filter input label is not specified, it is set to "in" by
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- * default.
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- */
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- outputs->name = av_strdup("in");
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- outputs->filter_ctx = buffersrc_ctx;
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- outputs->pad_idx = 0;
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- outputs->next = NULL;
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-
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- /*
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- * The buffer sink input must be connected to the output pad of
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- * the last filter described by filters_descr; since the last
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- * filter output label is not specified, it is set to "out" by
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- * default.
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- */
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- inputs->name = av_strdup("out");
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- inputs->filter_ctx = buffersink_ctx;
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- inputs->pad_idx = 0;
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- inputs->next = NULL;
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-
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- if ((ret = avfilter_graph_parse_ptr(filter_graph, filters_descr,
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- &inputs, &outputs, NULL)) < 0)
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- goto end;
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-
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- if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0)
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- goto end;
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-
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- /* Print summary of the sink buffer
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- * Note: args buffer is reused to store channel layout string */
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- outlink = buffersink_ctx->inputs[0];
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- av_channel_layout_describe(&outlink->ch_layout, args, sizeof(args));
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- av_log(NULL, AV_LOG_INFO, "Output: srate:%dHz fmt:%s chlayout:%s\n",
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- (int)outlink->sample_rate,
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- (char *)av_x_if_null(av_get_sample_fmt_name((AVSampleFormat)outlink->format), "?"),
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- args);
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-
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-end:
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- avfilter_inout_free(&inputs);
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- avfilter_inout_free(&outputs);
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+ bool is_endpoint = recognizer.IsEndpoint(s);
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+ auto text = recognizer.GetResult(s).text;
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- return ret;
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-}
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+ if (!text.empty() && last_text != text) {
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+ last_text = text;
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-static void sherpa_decode_frame(const AVFrame *frame, SherpaNcnnRecognizer *recognizer, SherpaNcnnStream *s, SherpaNcnnDisplay * display, int *segment_id)
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-{
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-#define N 3200 // 0.2 s. Sample rate is fixed to 16 kHz
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- static float samples[N];
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- static int nb_samples = 0;
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- const int16_t *p = (int16_t*)frame->data[0];
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-
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- if (frame->nb_samples + nb_samples >= N) {
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- AcceptWaveform(s, 16000, samples, nb_samples);
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- while (IsReady(recognizer, s)) {
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- Decode(recognizer, s);
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|
|
- }
|
|
|
+ std::transform(text.begin(), text.end(), text.begin(),
|
|
|
+ [](auto c) { return std::tolower(c); });
|
|
|
|
|
|
- SherpaNcnnResult *r = GetResult(recognizer, s);
|
|
|
- if (strlen(r->text)) {
|
|
|
- SherpaNcnnPrint(display, *segment_id, r->text);
|
|
|
- }
|
|
|
+ display.Print(segment_index, text);
|
|
|
+ }
|
|
|
|
|
|
- if (IsEndpoint(recognizer, s)) {
|
|
|
- Reset(recognizer, s);
|
|
|
- if (strlen(r->text)) {
|
|
|
- ++(*segment_id);
|
|
|
- }
|
|
|
- }
|
|
|
+ if (is_endpoint) {
|
|
|
+ if (!text.empty()) {
|
|
|
+ ++segment_index;
|
|
|
+ }
|
|
|
|
|
|
- DestroyResult(r);
|
|
|
- nb_samples = 0;
|
|
|
+ recognizer.Reset(s);
|
|
|
}
|
|
|
|
|
|
- for (int i = 0; i < frame->nb_samples; i++) {
|
|
|
- samples[nb_samples++] = p[i] / 32768.;
|
|
|
- }
|
|
|
-}
|
|
|
+ nb_samples = 0;
|
|
|
+ }
|
|
|
|
|
|
-static inline char *__av_err2str(int errnum)
|
|
|
-{
|
|
|
- static char str[AV_ERROR_MAX_STRING_SIZE];
|
|
|
- memset(str, 0, sizeof(str));
|
|
|
- return av_make_error_string(str, AV_ERROR_MAX_STRING_SIZE, errnum);
|
|
|
+ for (int i = 0; i < frame->nb_samples; i++) {
|
|
|
+ samples[nb_samples++] = p[i] / 32768.;
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
-int main(int argc, char **argv)
|
|
|
-{
|
|
|
- int ret;
|
|
|
- int num_threads = 4;
|
|
|
- AVPacket *packet = av_packet_alloc();
|
|
|
- AVFrame *frame = av_frame_alloc();
|
|
|
- AVFrame *filt_frame = av_frame_alloc();
|
|
|
- const char *kUsage =
|
|
|
- "\n"
|
|
|
- "Usage:\n"
|
|
|
- " ./sherpa-ncnn-ffmpeg \\\n"
|
|
|
- " /path/to/tokens.txt \\\n"
|
|
|
- " /path/to/encoder.ncnn.param \\\n"
|
|
|
- " /path/to/encoder.ncnn.bin \\\n"
|
|
|
- " /path/to/decoder.ncnn.param \\\n"
|
|
|
- " /path/to/decoder.ncnn.bin \\\n"
|
|
|
- " /path/to/joiner.ncnn.param \\\n"
|
|
|
- " /path/to/joiner.ncnn.bin \\\n"
|
|
|
- " /path/to/foo.wav [<num_threads> [decode_method, can be "
|
|
|
- "greedy_search/modified_beam_search]]"
|
|
|
- "\n\n"
|
|
|
- "Please refer to \n"
|
|
|
- "https://k2-fsa.github.io/sherpa/ncnn/pretrained_models/index.html\n"
|
|
|
- "for a list of pre-trained models to download.\n";
|
|
|
-
|
|
|
-
|
|
|
- if (!packet || !frame || !filt_frame) {
|
|
|
- fprintf(stderr, "Could not allocate frame or packet\n");
|
|
|
- exit(1);
|
|
|
- }
|
|
|
+static inline char *__av_err2str(int errnum) {
|
|
|
+ static char str[AV_ERROR_MAX_STRING_SIZE];
|
|
|
+ memset(str, 0, sizeof(str));
|
|
|
+ return av_make_error_string(str, AV_ERROR_MAX_STRING_SIZE, errnum);
|
|
|
+}
|
|
|
|
|
|
- if (argc < 9 || argc > 11) {
|
|
|
- fprintf(stderr, "%s\n", kUsage);
|
|
|
- return -1;
|
|
|
+static void Handler(int32_t sig) {
|
|
|
+ fprintf(stderr, "\nCaught Ctrl + C. Exiting...\n");
|
|
|
+ signal(sig, SIG_DFL);
|
|
|
+ raise(sig);
|
|
|
+};
|
|
|
+
|
|
|
+int main(int argc, char **argv) {
|
|
|
+ if (argc < 9 || argc > 11) {
|
|
|
+ const char *usage = R"usage(
|
|
|
+Usage:
|
|
|
+ ./bin/sherpa-ncnn-microphone \
|
|
|
+ /path/to/tokens.txt \
|
|
|
+ /path/to/encoder.ncnn.param \
|
|
|
+ /path/to/encoder.ncnn.bin \
|
|
|
+ /path/to/decoder.ncnn.param \
|
|
|
+ /path/to/decoder.ncnn.bin \
|
|
|
+ /path/to/joiner.ncnn.param \
|
|
|
+ /path/to/joiner.ncnn.bin \
|
|
|
+ ffmpeg-input-url \
|
|
|
+ [num_threads] [decode_method, can be greedy_search/modified_beam_search]
|
|
|
+
|
|
|
+Please refer to
|
|
|
+https://k2-fsa.github.io/sherpa/ncnn/pretrained_models/index.html
|
|
|
+for a list of pre-trained models to download.
|
|
|
+)usage";
|
|
|
+ fprintf(stderr, "%s\n", usage);
|
|
|
+ fprintf(stderr, "argc, %d\n", argc);
|
|
|
+
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ signal(SIGINT, Handler);
|
|
|
+
|
|
|
+ AVPacket *packet = av_packet_alloc();
|
|
|
+ AVFrame *frame = av_frame_alloc();
|
|
|
+ AVFrame *filt_frame = av_frame_alloc();
|
|
|
+ if (!packet || !frame || !filt_frame) {
|
|
|
+ fprintf(stderr, "Could not allocate frame or packet\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+
|
|
|
+ sherpa_ncnn::RecognizerConfig config;
|
|
|
+ config.model_config.tokens = argv[1];
|
|
|
+ config.model_config.encoder_param = argv[2];
|
|
|
+ config.model_config.encoder_bin = argv[3];
|
|
|
+ config.model_config.decoder_param = argv[4];
|
|
|
+ config.model_config.decoder_bin = argv[5];
|
|
|
+ config.model_config.joiner_param = argv[6];
|
|
|
+ config.model_config.joiner_bin = argv[7];
|
|
|
+ int32_t num_threads = 4;
|
|
|
+ if (argc >= 9 && atoi(argv[8]) > 0) {
|
|
|
+ num_threads = atoi(argv[8]);
|
|
|
+ }
|
|
|
+ config.model_config.encoder_opt.num_threads = num_threads;
|
|
|
+ config.model_config.decoder_opt.num_threads = num_threads;
|
|
|
+ config.model_config.joiner_opt.num_threads = num_threads;
|
|
|
+
|
|
|
+ const float expected_sampling_rate = 16000;
|
|
|
+ if (argc == 11) {
|
|
|
+ std::string method = argv[10];
|
|
|
+ if (method.compare("greedy_search") ||
|
|
|
+ method.compare("modified_beam_search")) {
|
|
|
+ config.decoder_config.method = method;
|
|
|
}
|
|
|
+ }
|
|
|
|
|
|
- SherpaNcnnRecognizerConfig config;
|
|
|
- config.model_config.tokens = argv[1];
|
|
|
- config.model_config.encoder_param = argv[2];
|
|
|
- config.model_config.encoder_bin = argv[3];
|
|
|
- config.model_config.decoder_param = argv[4];
|
|
|
- config.model_config.decoder_bin = argv[5];
|
|
|
- config.model_config.joiner_param = argv[6];
|
|
|
- config.model_config.joiner_bin = argv[7];
|
|
|
-
|
|
|
- if (argc >= 10 && atoi(argv[9]) > 0) {
|
|
|
- num_threads = atoi(argv[9]);
|
|
|
- }
|
|
|
- config.model_config.num_threads = num_threads;
|
|
|
- config.model_config.use_vulkan_compute = 0;
|
|
|
+ config.enable_endpoint = true;
|
|
|
|
|
|
- config.decoder_config.decoding_method = "greedy_search";
|
|
|
+ config.endpoint_config.rule1.min_trailing_silence = 2.4;
|
|
|
+ config.endpoint_config.rule2.min_trailing_silence = 1.2;
|
|
|
+ config.endpoint_config.rule3.min_utterance_length = 300;
|
|
|
|
|
|
- if (argc == 11) {
|
|
|
- config.decoder_config.decoding_method = argv[10];
|
|
|
- }
|
|
|
- config.decoder_config.num_active_paths = 4;
|
|
|
- config.enable_endpoint = 1;
|
|
|
- config.rule1_min_trailing_silence = 2.4;
|
|
|
- config.rule2_min_trailing_silence = 1.2;
|
|
|
- config.rule3_min_utterance_length = 300;
|
|
|
+ config.feat_config.sampling_rate = expected_sampling_rate;
|
|
|
+ config.feat_config.feature_dim = 80;
|
|
|
|
|
|
- config.feat_config.sampling_rate = 16000;
|
|
|
- config.feat_config.feature_dim = 80;
|
|
|
+ fprintf(stderr, "%s\n", config.ToString().c_str());
|
|
|
|
|
|
- SherpaNcnnRecognizer *recognizer = CreateRecognizer(&config);
|
|
|
+ sherpa_ncnn::Recognizer recognizer(config);
|
|
|
+ auto s = recognizer.CreateStream();
|
|
|
|
|
|
- SherpaNcnnStream *s = CreateStream(recognizer);
|
|
|
+ int ret;
|
|
|
+ if ((ret = open_input_file(argv[8])) < 0) {
|
|
|
+ fprintf(stderr, "Open input file %s failed, r0=%d\n", argv[8], ret);
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
|
|
|
- SherpaNcnnDisplay *display = CreateDisplay(60);
|
|
|
- int segment_id = 0;
|
|
|
+ if ((ret = init_filters(filter_descr)) < 0) {
|
|
|
+ fprintf(stderr, "Init filters %s failed, r0=%d\n", filter_descr, ret);
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
|
|
|
- if ((ret = open_input_file(argv[8])) < 0)
|
|
|
- exit(1);
|
|
|
+ std::string last_text;
|
|
|
+ int32_t segment_index = 0;
|
|
|
+ sherpa_ncnn::Display display;
|
|
|
+ while (1) {
|
|
|
+ if ((ret = av_read_frame(fmt_ctx, packet)) < 0) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
|
|
|
- if ((ret = init_filters(filter_descr)) < 0)
|
|
|
- exit(1);
|
|
|
+ if (packet->stream_index == audio_stream_index) {
|
|
|
+ ret = avcodec_send_packet(dec_ctx, packet);
|
|
|
+ if (ret < 0) {
|
|
|
+ av_log(NULL, AV_LOG_ERROR,
|
|
|
+ "Error while sending a packet to the decoder\n");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ while (ret >= 0) {
|
|
|
+ ret = avcodec_receive_frame(dec_ctx, frame);
|
|
|
+ if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
|
|
|
+ break;
|
|
|
+ } else if (ret < 0) {
|
|
|
+ av_log(NULL, AV_LOG_ERROR,
|
|
|
+ "Error while receiving a frame from the decoder\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
|
|
|
- /* read all packets */
|
|
|
- while (1) {
|
|
|
- if ((ret = av_read_frame(fmt_ctx, packet)) < 0)
|
|
|
+ if (ret >= 0) {
|
|
|
+ /* push the audio data from decoded frame into the filtergraph */
|
|
|
+ if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame,
|
|
|
+ AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
|
|
|
+ av_log(NULL, AV_LOG_ERROR,
|
|
|
+ "Error while feeding the audio filtergraph\n");
|
|
|
break;
|
|
|
+ }
|
|
|
|
|
|
- if (packet->stream_index == audio_stream_index) {
|
|
|
- ret = avcodec_send_packet(dec_ctx, packet);
|
|
|
- if (ret < 0) {
|
|
|
- av_log(NULL, AV_LOG_ERROR, "Error while sending a packet to the decoder\n");
|
|
|
- break;
|
|
|
+ /* pull filtered audio from the filtergraph */
|
|
|
+ while (1) {
|
|
|
+ ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
|
|
|
+ if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
|
|
|
+ break;
|
|
|
}
|
|
|
-
|
|
|
- while (ret >= 0) {
|
|
|
- ret = avcodec_receive_frame(dec_ctx, frame);
|
|
|
- if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
|
|
|
- break;
|
|
|
- } else if (ret < 0) {
|
|
|
- av_log(NULL, AV_LOG_ERROR, "Error while receiving a frame from the decoder\n");
|
|
|
- exit(1);
|
|
|
- }
|
|
|
-
|
|
|
- if (ret >= 0) {
|
|
|
- /* push the audio data from decoded frame into the filtergraph */
|
|
|
- if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
|
|
|
- av_log(NULL, AV_LOG_ERROR, "Error while feeding the audio filtergraph\n");
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- /* pull filtered audio from the filtergraph */
|
|
|
- while (1) {
|
|
|
- ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
|
|
|
- if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
|
|
|
- break;
|
|
|
- if (ret < 0)
|
|
|
- exit(1);
|
|
|
- sherpa_decode_frame(filt_frame, recognizer, s, display, &segment_id);
|
|
|
- av_frame_unref(filt_frame);
|
|
|
- }
|
|
|
- av_frame_unref(frame);
|
|
|
- }
|
|
|
+ if (ret < 0) {
|
|
|
+ exit(1);
|
|
|
}
|
|
|
+ sherpa_decode_frame(filt_frame, recognizer, s.get(), display,
|
|
|
+ last_text, segment_index);
|
|
|
+ av_frame_unref(filt_frame);
|
|
|
+ }
|
|
|
+ av_frame_unref(frame);
|
|
|
}
|
|
|
- av_packet_unref(packet);
|
|
|
+ }
|
|
|
}
|
|
|
-
|
|
|
- // add some tail padding
|
|
|
- float tail_paddings[4800] = {0}; // 0.3 seconds at 16 kHz sample rate
|
|
|
- AcceptWaveform(s, 16000, tail_paddings, 4800);
|
|
|
-
|
|
|
- InputFinished(s);
|
|
|
-
|
|
|
- while (IsReady(recognizer, s)) {
|
|
|
- Decode(recognizer, s);
|
|
|
- }
|
|
|
- SherpaNcnnResult *r = GetResult(recognizer, s);
|
|
|
- if(strlen(r->text)) {
|
|
|
- SherpaNcnnPrint(display, segment_id, r->text);
|
|
|
- }
|
|
|
- DestroyResult(r);
|
|
|
-
|
|
|
- DestroyDisplay(display);
|
|
|
- DestroyStream(s);
|
|
|
- DestroyRecognizer(recognizer);
|
|
|
- avfilter_graph_free(&filter_graph);
|
|
|
- avcodec_free_context(&dec_ctx);
|
|
|
- avformat_close_input(&fmt_ctx);
|
|
|
- av_packet_free(&packet);
|
|
|
- av_frame_free(&frame);
|
|
|
- av_frame_free(&filt_frame);
|
|
|
-
|
|
|
- if (ret < 0 && ret != AVERROR_EOF) {
|
|
|
- fprintf(stderr, "Error occurred: %s\n", __av_err2str(ret));
|
|
|
- exit(1);
|
|
|
- }
|
|
|
-
|
|
|
- fprintf(stderr, "\n");
|
|
|
-
|
|
|
- return 0;
|
|
|
+ av_packet_unref(packet);
|
|
|
+ }
|
|
|
+
|
|
|
+ // add some tail padding
|
|
|
+ float tail_paddings[4800] = {0}; // 0.3 seconds at 16 kHz sample rate
|
|
|
+ s->AcceptWaveform(16000, tail_paddings, 4800);
|
|
|
+
|
|
|
+ s->InputFinished();
|
|
|
+
|
|
|
+ while (recognizer.IsReady(s.get())) {
|
|
|
+ recognizer.DecodeStream(s.get());
|
|
|
+ }
|
|
|
+
|
|
|
+ auto text = recognizer.GetResult(s.get()).text;
|
|
|
+ if (!text.empty() && last_text != text) {
|
|
|
+ last_text = text;
|
|
|
+ std::transform(text.begin(), text.end(), text.begin(),
|
|
|
+ [](auto c) { return std::tolower(c); });
|
|
|
+ display.Print(segment_index, text);
|
|
|
+ }
|
|
|
+
|
|
|
+ avfilter_graph_free(&filter_graph);
|
|
|
+ avcodec_free_context(&dec_ctx);
|
|
|
+ avformat_close_input(&fmt_ctx);
|
|
|
+ av_packet_free(&packet);
|
|
|
+ av_frame_free(&frame);
|
|
|
+ av_frame_free(&filt_frame);
|
|
|
+
|
|
|
+ if (ret < 0 && ret != AVERROR_EOF) {
|
|
|
+ fprintf(stderr, "Error occurred: %s\n", __av_err2str(ret));
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
}
|
Winlin