Exemple #1
0
TEST(API, Test2SilenceFp)
{
	short zeroes[1024];
	std::fill(zeroes, zeroes + 1024, 0);

	ChromaprintContext *ctx = chromaprint_new(CHROMAPRINT_ALGORITHM_TEST2);
	ASSERT_NE(nullptr, ctx);
	SCOPE_EXIT(chromaprint_free(ctx));

	ASSERT_EQ(1, chromaprint_start(ctx, 44100, 1));
	for (int i = 0; i < 130; i++) {
		ASSERT_EQ(1, chromaprint_feed(ctx, zeroes, 1024));
	}

	char *fp;
	uint32_t fp_hash;

	ASSERT_EQ(1, chromaprint_finish(ctx));
	ASSERT_EQ(1, chromaprint_get_fingerprint(ctx, &fp));
	SCOPE_EXIT(chromaprint_dealloc(fp));
	ASSERT_EQ(1, chromaprint_get_fingerprint_hash(ctx, &fp_hash));

	ASSERT_EQ(18, strlen(fp));
	EXPECT_EQ(std::string("AQAAA0mUaEkSRZEGAA"), std::string(fp));
	ASSERT_EQ(627964279, fp_hash);
}
static void
gst_chromaprint_create_fingerprint (GstChromaprint * chromaprint)
{
  GstTagList *tags;

  if (chromaprint->duration <= 3)
    return;

  GST_DEBUG_OBJECT (chromaprint,
      "Generating fingerprint based on %d seconds of audio",
      chromaprint->duration);

  chromaprint_finish (chromaprint->context);
  chromaprint_get_fingerprint (chromaprint->context, &chromaprint->fingerprint);
  chromaprint->record = FALSE;

  tags = gst_tag_list_new (GST_TAG_CHROMAPRINT_FINGERPRINT,
      chromaprint->fingerprint, NULL);

  gst_pad_push_event (GST_BASE_TRANSFORM_SRC_PAD (chromaprint),
      gst_event_new_tag (tags));
}
Exemple #3
0
TEST(API, TestFp) {
	std::vector<short> data = LoadAudioFile("data/test_stereo_44100.raw");

	ChromaprintContext *ctx = chromaprint_new(CHROMAPRINT_ALGORITHM_TEST2);
	ASSERT_NE(nullptr, ctx);
	SCOPE_EXIT(chromaprint_free(ctx));

	ASSERT_EQ(1, chromaprint_get_num_channels(ctx));
	ASSERT_EQ(11025, chromaprint_get_sample_rate(ctx));

	ASSERT_EQ(1, chromaprint_start(ctx, 44100, 1));
	ASSERT_EQ(1, chromaprint_feed(ctx, data.data(), data.size()));

	char *fp;
	uint32_t fp_hash;

	ASSERT_EQ(1, chromaprint_finish(ctx));
	ASSERT_EQ(1, chromaprint_get_fingerprint(ctx, &fp));
	SCOPE_EXIT(chromaprint_dealloc(fp));
	ASSERT_EQ(1, chromaprint_get_fingerprint_hash(ctx, &fp_hash));

	EXPECT_EQ(std::string("AQAAC0kkZUqYREkUnFAXHk8uuMZl6EfO4zu-4ABKFGESWIIMEQE"), std::string(fp));
	ASSERT_EQ(3732003127, fp_hash);
}
Exemple #4
0
static void Finish( sout_stream_t *p_stream )
{
    sout_stream_sys_t *p_sys = p_stream->p_sys;
    char *psz_fingerprint = NULL;
    if ( p_sys->b_finished && chromaprint_finish( p_sys->p_chromaprint_ctx ) )
    {
        chromaprint_get_fingerprint( p_sys->p_chromaprint_ctx,
                                     &psz_fingerprint );
        if ( psz_fingerprint )
        {
            p_sys->p_data->i_duration = p_sys->i_total_samples / p_sys->id->i_samplerate;
            p_sys->p_data->psz_fingerprint = strdup( psz_fingerprint );
            chromaprint_dealloc( psz_fingerprint );
            msg_Dbg( p_stream, "DURATION=%u;FINGERPRINT=%s",
                    p_sys->p_data->i_duration,
                    p_sys->p_data->psz_fingerprint );
        }
    } else {
        msg_Dbg( p_stream, "Cannot create %us fingerprint (not enough samples?)",
                 p_sys->i_duration );
    }
    p_sys->b_done = true;
    msg_Dbg( p_stream, "Fingerprinting finished" );
}
Exemple #5
0
int decode_audio_file(ChromaprintContext *chromaprint_ctx, int16_t *buffer1, int16_t *buffer2, const char *file_name, int max_length, int *duration)
{
	int i, ok = 0, remaining, length, consumed, buffer_size, codec_ctx_opened = 0;
	AVFormatContext *format_ctx = NULL;
	AVCodecContext *codec_ctx = NULL;
	AVCodec *codec = NULL;
	AVStream *stream = NULL;
	AVPacket packet, packet_temp;
#ifdef HAVE_AV_AUDIO_CONVERT
	AVAudioConvert *convert_ctx = NULL;
#endif
	int16_t *buffer;

	if (!strcmp(file_name, "-")) {
		file_name = "pipe:0";
	}

#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 2, 0)
	if (av_open_input_file(&format_ctx, file_name, NULL, 0, NULL) != 0) {
#else
	if (avformat_open_input(&format_ctx, file_name, NULL, NULL) != 0) {
#endif
		fprintf(stderr, "ERROR: couldn't open the file\n");
		goto done;
	}

	if (av_find_stream_info(format_ctx) < 0) {
		fprintf(stderr, "ERROR: couldn't find stream information in the file\n");
		goto done;
	}

	for (i = 0; i < format_ctx->nb_streams; i++) {
		codec_ctx = format_ctx->streams[i]->codec;
		if (codec_ctx && codec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
			stream = format_ctx->streams[i];
			break;
		}
	}
	if (!stream) {
		fprintf(stderr, "ERROR: couldn't find any audio stream in the file\n");
		goto done;
	}

	codec = avcodec_find_decoder(codec_ctx->codec_id);
	if (!codec) {
		fprintf(stderr, "ERROR: unknown codec\n");
		goto done;
	}

	if (avcodec_open(codec_ctx, codec) < 0) {
		fprintf(stderr, "ERROR: couldn't open the codec\n");
		goto done;
	}
	codec_ctx_opened = 1;

	if (codec_ctx->channels <= 0) {
		fprintf(stderr, "ERROR: no channels found in the audio stream\n");
		goto done;
	}

	if (codec_ctx->sample_fmt != AV_SAMPLE_FMT_S16) {
#ifdef HAVE_AV_AUDIO_CONVERT
		convert_ctx = av_audio_convert_alloc(AV_SAMPLE_FMT_S16, codec_ctx->channels,
		                                     codec_ctx->sample_fmt, codec_ctx->channels, NULL, 0);
		if (!convert_ctx) {
			fprintf(stderr, "ERROR: couldn't create sample format converter\n");
			goto done;
		}
#else
		fprintf(stderr, "ERROR: unsupported sample format\n");
		goto done;
#endif
	}

	*duration = stream->time_base.num * stream->duration / stream->time_base.den;

	av_init_packet(&packet);
	av_init_packet(&packet_temp);

	remaining = max_length * codec_ctx->channels * codec_ctx->sample_rate;
	chromaprint_start(chromaprint_ctx, codec_ctx->sample_rate, codec_ctx->channels);

	while (1) {
		if (av_read_frame(format_ctx, &packet) < 0) {
			break;
		}

		packet_temp.data = packet.data;
		packet_temp.size = packet.size;

		while (packet_temp.size > 0) {
			buffer_size = BUFFER_SIZE;
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(52, 23, 0)
			consumed = avcodec_decode_audio2(codec_ctx,
				buffer1, &buffer_size, packet_temp.data, packet_temp.size);
#else
			consumed = avcodec_decode_audio3(codec_ctx,
				buffer1, &buffer_size, &packet_temp);
#endif

			if (consumed < 0) {
				break;
			}

			packet_temp.data += consumed;
			packet_temp.size -= consumed;

			if (buffer_size <= 0) {
				if (buffer_size < 0) {
					fprintf(stderr, "WARNING: size returned from avcodec_decode_audioX is too small\n");
				}
				continue;
			}
			if (buffer_size > BUFFER_SIZE) {
				fprintf(stderr, "WARNING: size returned from avcodec_decode_audioX is too large\n");
				continue;
			}

#ifdef HAVE_AV_AUDIO_CONVERT
			if (convert_ctx) {
				const void *ibuf[6] = { buffer1 };
				void *obuf[6] = { buffer2 };
#if LIBAVUTIL_VERSION_INT < AV_VERSION_INT(51, 8, 0)
				int istride[6] = { av_get_bits_per_sample_format(codec_ctx->sample_fmt) / 8 };
#else
				int istride[6] = { av_get_bytes_per_sample(codec_ctx->sample_fmt) };
#endif
				int ostride[6] = { 2 };
				int len = buffer_size / istride[0];
				if (av_audio_convert(convert_ctx, obuf, ostride, ibuf, istride, len) < 0) {
					break;
				}
				buffer = buffer2;
				buffer_size = len * ostride[0];
			}
			else {
				buffer = buffer1;
			}
#else
			buffer = buffer1;
#endif

			length = MIN(remaining, buffer_size / 2);
			if (!chromaprint_feed(chromaprint_ctx, buffer, length)) {
				fprintf(stderr, "ERROR: fingerprint calculation failed\n");
				goto done;
			}

			if (max_length) {
				remaining -= length;
				if (remaining <= 0) {
					goto finish;
				}
			}
		}

		if (packet.data) {
			av_free_packet(&packet);
		}
	}

finish:
	if (!chromaprint_finish(chromaprint_ctx)) {
		fprintf(stderr, "ERROR: fingerprint calculation failed\n");
		goto done;
	}

	ok = 1;

done:
	if (codec_ctx_opened) {
		avcodec_close(codec_ctx);
	}
	if (format_ctx) {
		av_close_input_file(format_ctx);
	}
#ifdef HAVE_AV_AUDIO_CONVERT
	if (convert_ctx) {
		av_audio_convert_free(convert_ctx);
	}
#endif
	return ok;
}

int fpcalc_main(int argc, char **argv)
{
	int i, j, max_length = 120, num_file_names = 0, raw = 0, raw_fingerprint_size, duration;
	int16_t *buffer1, *buffer2;
	int32_t *raw_fingerprint;
	char *file_name, *fingerprint, **file_names;
	ChromaprintContext *chromaprint_ctx;
	int algo = CHROMAPRINT_ALGORITHM_DEFAULT;

	file_names = malloc(argc * sizeof(char *));
	for (i = 1; i < argc; i++) {
		char *arg = argv[i];
		if (!strcmp(arg, "-length") && i + 1 < argc) {
			max_length = atoi(argv[++i]);
		}
		else if (!strcmp(arg, "-version") || !strcmp(arg, "-v")) {
			printf("fpcalc version %s\n", chromaprint_get_version());
			return 0;
		}
		else if (!strcmp(arg, "-raw")) {
			raw = 1;
		}
		else if (!strcmp(arg, "-algo") && i + 1 < argc) {
			const char *v = argv[++i];
			if (!strcmp(v, "test1")) { algo = CHROMAPRINT_ALGORITHM_TEST1; }
			else if (!strcmp(v, "test2")) { algo = CHROMAPRINT_ALGORITHM_TEST2; }
			else if (!strcmp(v, "test3")) { algo = CHROMAPRINT_ALGORITHM_TEST3; }
			else if (!strcmp(v, "test4")) { algo = CHROMAPRINT_ALGORITHM_TEST4; }
			else {
				fprintf(stderr, "WARNING: unknown algorithm, using the default\n");
			}
		}
		else if (!strcmp(arg, "-set") && i + 1 < argc) {
			i += 1;
		}
		else {
			file_names[num_file_names++] = argv[i];
		}
	}

	if (!num_file_names) {
		printf("usage: %s [OPTIONS] FILE...\n\n", argv[0]);
		printf("Options:\n");
		printf("  -version      print version information\n");
		printf("  -length SECS  length of the audio data used for fingerprint calculation (default 120)\n");
		printf("  -raw          output the raw uncompressed fingerprint\n");
		printf("  -algo NAME    version of the fingerprint algorithm\n");
		return 2;
	}

	av_register_all();
	av_log_set_level(AV_LOG_ERROR);

	buffer1 = av_malloc(BUFFER_SIZE + 16);
	buffer2 = av_malloc(BUFFER_SIZE + 16);
	chromaprint_ctx = chromaprint_new(algo);

	for (i = 1; i < argc; i++) {
		char *arg = argv[i];
		if (!strcmp(arg, "-set") && i + 1 < argc) {
			char *name = argv[++i];
			char *value = strchr(name, '=');
			if (value) {
				*value++ = '\0';
				chromaprint_set_option(chromaprint_ctx, name, atoi(value));
			}
		}
	}

	for (i = 0; i < num_file_names; i++) {
		file_name = file_names[i];
		if (!decode_audio_file(chromaprint_ctx, buffer1, buffer2, file_name, max_length, &duration)) {
			fprintf(stderr, "ERROR: unable to calculate fingerprint for file %s, skipping\n", file_name);
			continue;
		}
		if (i > 0) {
			printf("\n");
		}
		printf("FILE=%s\n", file_name);
		printf("DURATION=%d\n", duration);
		if (raw) {
			if (!chromaprint_get_raw_fingerprint(chromaprint_ctx, (void **)&raw_fingerprint, &raw_fingerprint_size)) {
				fprintf(stderr, "ERROR: unable to calculate fingerprint for file %s, skipping\n", file_name);
				continue;
			}
			printf("FINGERPRINT=");
			for (j = 0; j < raw_fingerprint_size; j++) {
				printf("%d%s", raw_fingerprint[j], j + 1 < raw_fingerprint_size ? "," : "");
			}
			printf("\n");
			chromaprint_dealloc(raw_fingerprint);
		}
		else {
			if (!chromaprint_get_fingerprint(chromaprint_ctx, &fingerprint)) {
				fprintf(stderr, "ERROR: unable to calculate fingerprint for file %s, skipping\n", file_name);
				continue;
			}
			printf("FINGERPRINT=%s\n", fingerprint);
			chromaprint_dealloc(fingerprint);
		}
	}

	chromaprint_free(chromaprint_ctx);
	av_free(buffer1);
	av_free(buffer2);
	free(file_names);

	return 0;
}
Exemple #6
0
Chroma::Result Chroma::operator() (const QString& filename)
{
    std::shared_ptr<AVFormatContext> formatCtx;
    {
        AVFormatContext *formatCtxRaw = nullptr;
        if (avformat_open_input (&formatCtxRaw, filename.toLatin1 ().constData (), nullptr, nullptr))
            throw std::runtime_error ("error opening file");

        formatCtx.reset (formatCtxRaw,
        [] (AVFormatContext *ctx) {
            avformat_close_input (&ctx);
        });
    }

    {
        QMutexLocker locker (&CodecMutex_);
        if (avformat_find_stream_info (formatCtx.get (), nullptr) < 0)
            throw std::runtime_error ("could not find stream");
    }

    AVCodec *codec = nullptr;
    const auto streamIndex = av_find_best_stream (formatCtx.get (), AVMEDIA_TYPE_AUDIO, -1, -1, &codec, 0);
    if (streamIndex < 0)
        throw std::runtime_error ("could not find audio stream");

    auto stream = formatCtx->streams [streamIndex];

    bool codecOpened = false;

    std::shared_ptr<AVCodecContext> codecCtx (stream->codec,
    [&codecOpened] (AVCodecContext *ctx) {
        if (codecOpened) avcodec_close (ctx);
    });
    {
        QMutexLocker locker (&CodecMutex_);
        if (avcodec_open2 (codecCtx.get (), codec, nullptr) < 0)
            throw std::runtime_error ("couldn't open the codec");
    }
    codecOpened = true;

    if (codecCtx->channels <= 0)
        throw std::runtime_error ("no channels found");

    std::shared_ptr<SwrContext> swr;
    if (codecCtx->sample_fmt != AV_SAMPLE_FMT_S16)
    {
        swr.reset (swr_alloc (), [] (SwrContext *ctx) {
            if (ctx) swr_free (&ctx);
        });
        av_opt_set_int (swr.get (), "in_channel_layout", codecCtx->channel_layout, 0);
        av_opt_set_int (swr.get (), "out_channel_layout", codecCtx->channel_layout,  0);
        av_opt_set_int (swr.get (), "in_sample_rate", codecCtx->sample_rate, 0);
        av_opt_set_int (swr.get (), "out_sample_rate", codecCtx->sample_rate, 0);
        av_opt_set_sample_fmt (swr.get (), "in_sample_fmt", codecCtx->sample_fmt, 0);
        av_opt_set_sample_fmt (swr.get (), "out_sample_fmt", AV_SAMPLE_FMT_S16, 0);
        swr_init (swr.get ());
    }

    AVPacket packet;
    av_init_packet (&packet);

    const int maxLength = 120;
    auto remaining = maxLength * codecCtx->channels * codecCtx->sample_rate;
    chromaprint_start (Ctx_, codecCtx->sample_rate, codecCtx->channels);

    std::shared_ptr<AVFrame> frame (av_frame_alloc (),
    [] (AVFrame *frame) {
        av_frame_free (&frame);
    });
    auto maxDstNbSamples = 0;

    uint8_t *dstData [1] = { nullptr };
    std::shared_ptr<void> dstDataGuard (nullptr,
    [&dstData] (void*) {
        if (dstData [0]) av_freep (&dstData [0]);
    });
    while (true)
    {
        if (av_read_frame (formatCtx.get (), &packet) < 0)
            break;

        std::shared_ptr<void> guard (nullptr,
        [&packet] (void*) {
            if (packet.data) av_free_packet (&packet);
        });

        if (packet.stream_index != streamIndex)
            continue;

        av_frame_unref (frame.get ());
        int gotFrame = false;
        auto consumed = avcodec_decode_audio4 (codecCtx.get (), frame.get (), &gotFrame, &packet);

        if (consumed < 0 || !gotFrame)
            continue;

        uint8_t **data = nullptr;
        if (swr)
        {
            if (frame->nb_samples > maxDstNbSamples)
            {
                if (dstData [0])
                    av_freep (&dstData [0]);
                int linesize = 0;
                if (av_samples_alloc (dstData, &linesize, codecCtx->channels, frame->nb_samples, AV_SAMPLE_FMT_S16, 1) < 0)
                    throw std::runtime_error ("cannot allocate memory for resampling");
            }

            if (swr_convert (swr.get (), dstData, frame->nb_samples, const_cast<const uint8_t**> (frame->data), frame->nb_samples) < 0)
                throw std::runtime_error ("cannot resample audio");

            data = dstData;
        }
        else
            data = frame->data;

        auto length = std::min (remaining, frame->nb_samples * codecCtx->channels);
        if (!chromaprint_feed (Ctx_, data [0], length))
            throw std::runtime_error ("cannot feed data");

        bool finished = false;
        if (maxLength)
        {
            remaining -= length;
            if (remaining <= 0)
                finished = true;
        }
        if (finished)
            break;
    }

    if (!chromaprint_finish (Ctx_))
        throw std::runtime_error ("fingerprint calculation failed");

    char *fingerprint = 0;
    if (!chromaprint_get_fingerprint (Ctx_, &fingerprint))
        throw std::runtime_error ("unable to get fingerprint");

    QByteArray result (fingerprint);
    chromaprint_dealloc (fingerprint);

    const double divideFactor = 1. / av_q2d (stream->time_base);
    const double duration = stream->duration / divideFactor;

    return { result, static_cast<int> (duration) };
}
Exemple #7
0
int fpcalc_main(int argc, char **argv)
{
	int i, j, max_length = 120, num_file_names = 0, raw = 0, raw_fingerprint_size, duration;
	int32_t *raw_fingerprint;
	char *file_name, *fingerprint, **file_names;
	ChromaprintContext *chromaprint_ctx;
	int algo = CHROMAPRINT_ALGORITHM_DEFAULT, num_failed = 0, do_hash = 0;

	file_names = malloc(argc * sizeof(char *));
	for (i = 1; i < argc; i++) {
		char *arg = argv[i];
		if (!strcmp(arg, "-length") && i + 1 < argc) {
			max_length = atoi(argv[++i]);
		}
		else if (!strcmp(arg, "-version") || !strcmp(arg, "-v")) {
			printf("fpcalc version %s\n", chromaprint_get_version());
			return 0;
		}
		else if (!strcmp(arg, "-raw")) {
			raw = 1;
		}
		else if (!strcmp(arg, "-hash")) {
			do_hash = 1;
		}
		else if (!strcmp(arg, "-algo") && i + 1 < argc) {
			const char *v = argv[++i];
			if (!strcmp(v, "test1")) { algo = CHROMAPRINT_ALGORITHM_TEST1; }
			else if (!strcmp(v, "test2")) { algo = CHROMAPRINT_ALGORITHM_TEST2; }
			else if (!strcmp(v, "test3")) { algo = CHROMAPRINT_ALGORITHM_TEST3; }
			else if (!strcmp(v, "test4")) { algo = CHROMAPRINT_ALGORITHM_TEST4; }
			else {
				fprintf(stderr, "WARNING: unknown algorithm, using the default\n");
			}
		}
		else if (!strcmp(arg, "-set") && i + 1 < argc) {
			i += 1;
		}
		else {
			file_names[num_file_names++] = argv[i];
		}
	}

	if (!num_file_names) {
		printf("usage: %s [OPTIONS] FILE...\n\n", argv[0]);
		printf("Options:\n");
		printf("  -version      print version information\n");
		printf("  -length SECS  length of the audio data used for fingerprint calculation (default 120)\n");
		printf("  -raw          output the raw uncompressed fingerprint\n");
		printf("  -algo NAME    version of the fingerprint algorithm\n");
		printf("  -hash         calculate also the fingerprint hash\n");
		return 2;
	}

	av_register_all();
	av_log_set_level(AV_LOG_ERROR);

	chromaprint_ctx = chromaprint_new(algo);

	for (i = 1; i < argc; i++) {
		char *arg = argv[i];
		if (!strcmp(arg, "-set") && i + 1 < argc) {
			char *name = argv[++i];
			char *value = strchr(name, '=');
			if (value) {
				*value++ = '\0';
				chromaprint_set_option(chromaprint_ctx, name, atoi(value));
			}
		}
	}

	for (i = 0; i < num_file_names; i++) {
		file_name = file_names[i];
		if (!decode_audio_file(chromaprint_ctx, file_name, max_length, &duration)) {
			fprintf(stderr, "ERROR: unable to calculate fingerprint for file %s, skipping\n", file_name);
			num_failed++;
			continue;
		}
		if (i > 0) {
			printf("\n");
		}
		printf("FILE=%s\n", file_name);
		printf("DURATION=%d\n", duration);
		if (raw) {
			if (!chromaprint_get_raw_fingerprint(chromaprint_ctx, (void **)&raw_fingerprint, &raw_fingerprint_size)) {
				fprintf(stderr, "ERROR: unable to calculate fingerprint for file %s, skipping\n", file_name);
				num_failed++;
				continue;
			}
			printf("FINGERPRINT=");
			for (j = 0; j < raw_fingerprint_size; j++) {
				printf("%d%s", raw_fingerprint[j], j + 1 < raw_fingerprint_size ? "," : "");
			}
			printf("\n");
			chromaprint_dealloc(raw_fingerprint);
		}
		else {
			if (!chromaprint_get_fingerprint(chromaprint_ctx, &fingerprint)) {
				fprintf(stderr, "ERROR: unable to calculate fingerprint for file %s, skipping\n", file_name);
				num_failed++;
				continue;
			}
			printf("FINGERPRINT=%s\n", fingerprint);
			chromaprint_dealloc(fingerprint);
		}
        if (do_hash) {
            int32_t hash = 0;
            chromaprint_get_fingerprint_hash(chromaprint_ctx, &hash);
            printf("HASH=%d\n", hash);
        }
	}

	chromaprint_free(chromaprint_ctx);
	free(file_names);

	return num_failed ? 1 : 0;
}