Exemplo n.º 1
0
// fmt carries the input format. Change it to the best next-possible format
// the encoder likely accepts.
static void select_encode_format(AVCodecContext *c, struct mp_audio *fmt)
{
    int formats[AF_FORMAT_COUNT];
    af_get_best_sample_formats(fmt->format, formats);

    for (int n = 0; formats[n]; n++) {
        const enum AVSampleFormat *lf = c->codec->sample_fmts;
        for (int i = 0; lf && lf[i] != AV_SAMPLE_FMT_NONE; i++) {
            int mpfmt = af_from_avformat(lf[i]);
            if (mpfmt && mpfmt == formats[n]) {
                mp_audio_set_format(fmt, mpfmt);
                goto done_fmt;
            }
        }
    }
done_fmt: ;

    int rate =
        af_select_best_samplerate(fmt->rate, c->codec->supported_samplerates);
    if (rate > 0)
        fmt->rate = rate;

    struct mp_chmap_sel sel = {0};
    const uint64_t *lch = c->codec->channel_layouts;
    for (int n = 0; lch && lch[n]; n++) {
        struct mp_chmap chmap = {0};
        mp_chmap_from_lavc(&chmap, lch[n]);
        mp_chmap_sel_add_map(&sel, &chmap);
    }
    struct mp_chmap res = fmt->channels;
    mp_chmap_sel_adjust(&sel, &res);
    if (!mp_chmap_is_empty(&res))
        mp_audio_set_channels(fmt, &res);
}
Exemplo n.º 2
0
static int control(struct af_instance *af, int cmd, void *arg)
{
    struct af_resample *s = (struct af_resample *) af->priv;
    struct mp_audio *in   = (struct mp_audio *) arg;
    struct mp_audio *out  = (struct mp_audio *) af->data;

    switch (cmd) {
    case AF_CONTROL_REINIT: {
        struct mp_audio orig_in = *in;

        if (((out->rate    == in->rate) || (out->rate == 0)) &&
            (out->format   == in->format) &&
            (mp_chmap_equals(&out->channels, &in->channels) || out->nch == 0) &&
            s->allow_detach)
            return AF_DETACH;

        if (out->rate == 0)
            out->rate = in->rate;

        if (mp_chmap_is_empty(&out->channels))
            mp_audio_set_channels(out, &in->channels);

        if (af_to_avformat(in->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(in, AF_FORMAT_FLOAT);
        if (af_to_avformat(out->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(out, in->format);

        af->mul     = out->rate / (double)in->rate;

        int r = ((in->format == orig_in.format) &&
                mp_chmap_equals(&in->channels, &orig_in.channels))
                ? AF_OK : AF_FALSE;

        if (r == AF_OK && needs_lavrctx_reconfigure(s, in, out))
            r = configure_lavrr(af, in, out);
        return r;
    }
    case AF_CONTROL_SET_FORMAT: {
        if (af_to_avformat(*(int*)arg) == AV_SAMPLE_FMT_NONE)
            return AF_FALSE;

        mp_audio_set_format(af->data, *(int*)arg);
        return AF_OK;
    }
    case AF_CONTROL_SET_CHANNELS: {
        mp_audio_set_channels(af->data, (struct mp_chmap *)arg);
        return AF_OK;
    }
    case AF_CONTROL_SET_RESAMPLE_RATE:
        out->rate = *(int *)arg;
        return AF_OK;
    case AF_CONTROL_RESET:
        drop_all_output(s);
        return AF_OK;
    }
    return AF_UNKNOWN;
}
Exemplo n.º 3
0
static int control(struct af_instance *af, int cmd, void *arg)
{
    struct af_resample *s = af->priv;

    switch (cmd) {
    case AF_CONTROL_REINIT: {
        struct mp_audio *in = arg;
        struct mp_audio *out = af->data;
        struct mp_audio orig_in = *in;

        if (((out->rate    == in->rate) || (out->rate == 0)) &&
            (out->format   == in->format) &&
            (mp_chmap_equals(&out->channels, &in->channels) || out->nch == 0) &&
            s->allow_detach && s->playback_speed == 1.0)
            return AF_DETACH;

        if (out->rate == 0)
            out->rate = in->rate;

        if (mp_chmap_is_empty(&out->channels))
            mp_audio_set_channels(out, &in->channels);

        if (af_to_avformat(in->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(in, AF_FORMAT_FLOAT);
        if (check_output_conversion(out->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(out, in->format);

        int r = ((in->format == orig_in.format) &&
                mp_chmap_equals(&in->channels, &orig_in.channels))
                ? AF_OK : AF_FALSE;

        if (r == AF_OK)
            r = configure_lavrr(af, in, out, true);
        return r;
    }
    case AF_CONTROL_SET_PLAYBACK_SPEED_RESAMPLE: {
        s->playback_speed = *(double *)arg;
        return AF_OK;
    }
    case AF_CONTROL_RESET:
        if (s->avrctx) {
#if HAVE_LIBSWRESAMPLE
            swr_close(s->avrctx);
            if (swr_init(s->avrctx) < 0) {
                close_lavrr(af);
                return AF_ERROR;
            }
#else
            while (avresample_read(s->avrctx, NULL, 1000) > 0) {}
#endif
        }
        return AF_OK;
    }
    return AF_UNKNOWN;
}
Exemplo n.º 4
0
static int init_audio_codec(sh_audio_t *sh_audio, const char *decoder)
{
    assert(!sh_audio->initialized);
    resync_audio_stream(sh_audio);
    sh_audio->samplesize = 4;
    sh_audio->sample_format = AF_FORMAT_FLOAT_NE;
    sh_audio->audio_out_minsize = 8192; // default, preinit() may change it
    if (!sh_audio->ad_driver->preinit(sh_audio)) {
        mp_tmsg(MSGT_DECAUDIO, MSGL_ERR, "Audio decoder preinit failed.\n");
        return 0;
    }

    const int base_size = 65536;
    // At least 64 KiB plus rounding up to next decodable unit size
    sh_audio->a_buffer_size = base_size + sh_audio->audio_out_minsize;

    mp_tmsg(MSGT_DECAUDIO, MSGL_V,
            "dec_audio: Allocating %d + %d = %d bytes for output buffer.\n",
            sh_audio->audio_out_minsize, base_size,
            sh_audio->a_buffer_size);

    sh_audio->a_buffer = av_mallocz(sh_audio->a_buffer_size);
    if (!sh_audio->a_buffer)
        abort();
    sh_audio->a_buffer_len = 0;

    if (!sh_audio->ad_driver->init(sh_audio, decoder)) {
        mp_tmsg(MSGT_DECAUDIO, MSGL_V, "Audio decoder init failed.\n");
        uninit_audio(sh_audio); // free buffers
        return 0;
    }

    sh_audio->initialized = 1;

    if (mp_chmap_is_empty(&sh_audio->channels) || !sh_audio->samplerate) {
        mp_tmsg(MSGT_DECAUDIO, MSGL_ERR, "Audio decoder did not specify "
                "audio format!\n");
        uninit_audio(sh_audio); // free buffers
        return 0;
    }

    return 1;
}
Exemplo n.º 5
0
static int control(struct af_instance *af, int cmd, void *arg)
{
    struct af_resample *s = (struct af_resample *) af->priv;
    struct mp_audio *in   = (struct mp_audio *) arg;
    struct mp_audio *out  = (struct mp_audio *) af->data;

    switch (cmd) {
    case AF_CONTROL_REINIT: {
        struct mp_audio orig_in = *in;

        if (((out->rate    == in->rate) || (out->rate == 0)) &&
            (out->format   == in->format) &&
            (mp_chmap_equals(&out->channels, &in->channels) || out->nch == 0) &&
            s->allow_detach)
            return AF_DETACH;

        if (out->rate == 0)
            out->rate = in->rate;

        if (mp_chmap_is_empty(&out->channels))
            mp_audio_set_channels(out, &in->channels);

        enum AVSampleFormat in_samplefmt = af_to_avformat(in->format);
        if (in_samplefmt == AV_SAMPLE_FMT_NONE) {
            mp_audio_set_format(in, AF_FORMAT_FLOAT_NE);
            in_samplefmt = af_to_avformat(in->format);
        }
        enum AVSampleFormat out_samplefmt = af_to_avformat(out->format);
        if (out_samplefmt == AV_SAMPLE_FMT_NONE) {
            mp_audio_set_format(out, in->format);
            out_samplefmt = in_samplefmt;
        }

        af->mul     = (double) (out->rate * out->nch) / (in->rate * in->nch);
        af->delay   = out->nch * s->opts.filter_size / FFMIN(af->mul, 1);

        if (needs_lavrctx_reconfigure(s, in, out)) {
            avresample_close(s->avrctx);
            avresample_close(s->avrctx_out);

            s->ctx.out_rate    = out->rate;
            s->ctx.in_rate     = in->rate;
            s->ctx.out_format  = out->format;
            s->ctx.in_format   = in->format;
            s->ctx.out_channels= out->channels;
            s->ctx.in_channels = in->channels;
            s->ctx.filter_size = s->opts.filter_size;
            s->ctx.phase_shift = s->opts.phase_shift;
            s->ctx.linear      = s->opts.linear;
            s->ctx.cutoff      = s->opts.cutoff;

            ctx_opt_set_int("filter_size",        s->ctx.filter_size);
            ctx_opt_set_int("phase_shift",        s->ctx.phase_shift);
            ctx_opt_set_int("linear_interp",      s->ctx.linear);

            ctx_opt_set_dbl("cutoff",             s->ctx.cutoff);

            if (parse_avopts(s->avrctx, s->avopts) < 0) {
                mp_msg(MSGT_VFILTER, MSGL_FATAL,
                       "af_lavrresample: could not set opts: '%s'\n", s->avopts);
                return AF_ERROR;
            }

            struct mp_chmap map_in = in->channels;
            struct mp_chmap map_out = out->channels;

            // Try not to do any remixing if at least one is "unknown".
            if (mp_chmap_is_unknown(&map_in) || mp_chmap_is_unknown(&map_out)) {
                mp_chmap_set_unknown(&map_in, map_in.num);
                mp_chmap_set_unknown(&map_out, map_out.num);
            }

            // unchecked: don't take any channel reordering into account
            uint64_t in_ch_layout = mp_chmap_to_lavc_unchecked(&map_in);
            uint64_t out_ch_layout = mp_chmap_to_lavc_unchecked(&map_out);

            ctx_opt_set_int("in_channel_layout",  in_ch_layout);
            ctx_opt_set_int("out_channel_layout", out_ch_layout);

            ctx_opt_set_int("in_sample_rate",     s->ctx.in_rate);
            ctx_opt_set_int("out_sample_rate",    s->ctx.out_rate);

            ctx_opt_set_int("in_sample_fmt",      in_samplefmt);
            ctx_opt_set_int("out_sample_fmt",     out_samplefmt);

            struct mp_chmap in_lavc;
            mp_chmap_from_lavc(&in_lavc, in_ch_layout);
            mp_chmap_get_reorder(s->reorder_in, &map_in, &in_lavc);

            struct mp_chmap out_lavc;
            mp_chmap_from_lavc(&out_lavc, out_ch_layout);
            mp_chmap_get_reorder(s->reorder_out, &out_lavc, &map_out);

            // Same configuration; we just reorder.
            av_opt_set_int(s->avrctx_out, "in_channel_layout", out_ch_layout, 0);
            av_opt_set_int(s->avrctx_out, "out_channel_layout", out_ch_layout, 0);
            av_opt_set_int(s->avrctx_out, "in_sample_fmt", out_samplefmt, 0);
            av_opt_set_int(s->avrctx_out, "out_sample_fmt", out_samplefmt, 0);
            av_opt_set_int(s->avrctx_out, "in_sample_rate", s->ctx.out_rate, 0);
            av_opt_set_int(s->avrctx_out, "out_sample_rate", s->ctx.out_rate, 0);

#if USE_SET_CHANNEL_MAPPING
            // API has weird requirements, quoting avresample.h:
            //  * This function can only be called when the allocated context is not open.
            //  * Also, the input channel layout must have already been set.
            avresample_set_channel_mapping(s->avrctx, s->reorder_in);
            avresample_set_channel_mapping(s->avrctx_out, s->reorder_out);
#endif

            if (avresample_open(s->avrctx) < 0 ||
                avresample_open(s->avrctx_out) < 0)
            {
                mp_msg(MSGT_AFILTER, MSGL_ERR, "[lavrresample] Cannot open "
                       "Libavresample Context. \n");
                return AF_ERROR;
            }
        }

        return ((in->format == orig_in.format) &&
                mp_chmap_equals(&in->channels, &orig_in.channels))
               ? AF_OK : AF_FALSE;
    }
    case AF_CONTROL_FORMAT_FMT | AF_CONTROL_SET: {
        if (af_to_avformat(*(int*)arg) == AV_SAMPLE_FMT_NONE)
            return AF_FALSE;

        mp_audio_set_format(af->data, *(int*)arg);
        return AF_OK;
    }
    case AF_CONTROL_CHANNELS | AF_CONTROL_SET: {
        mp_audio_set_channels(af->data, (struct mp_chmap *)arg);
        return AF_OK;
    }
    case AF_CONTROL_RESAMPLE_RATE | AF_CONTROL_SET:
        out->rate = *(int *)arg;
        return AF_OK;
    }
    return AF_UNKNOWN;
}
Exemplo n.º 6
0
static int control(struct af_instance *af, int cmd, void *arg)
{
    struct af_resample *s = af->priv;

    switch (cmd) {
    case AF_CONTROL_REINIT: {
        struct mp_audio *in = arg;
        struct mp_audio *out = af->data;
        struct mp_audio orig_in = *in;

        if (((out->rate    == in->rate) || (out->rate == 0)) &&
            (out->format   == in->format) &&
            (mp_chmap_equals(&out->channels, &in->channels) || out->nch == 0) &&
            s->allow_detach && s->playback_speed == 1.0)
            return AF_DETACH;

        if (out->rate == 0)
            out->rate = in->rate;

        if (mp_chmap_is_empty(&out->channels))
            mp_audio_set_channels(out, &in->channels);

        if (af_to_avformat(in->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(in, AF_FORMAT_FLOAT);
        if (check_output_conversion(out->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(out, in->format);

        int r = ((in->format == orig_in.format) &&
                mp_chmap_equals(&in->channels, &orig_in.channels))
                ? AF_OK : AF_FALSE;

        if (r == AF_OK && needs_lavrctx_reconfigure(s, in, out))
            r = configure_lavrr(af, in, out);
        return r;
    }
    case AF_CONTROL_SET_FORMAT: {
        int format = *(int *)arg;
        if (format && check_output_conversion(format) == AV_SAMPLE_FMT_NONE)
            return AF_FALSE;

        mp_audio_set_format(af->data, format);
        return AF_OK;
    }
    case AF_CONTROL_SET_CHANNELS: {
        mp_audio_set_channels(af->data, (struct mp_chmap *)arg);
        return AF_OK;
    }
    case AF_CONTROL_SET_RESAMPLE_RATE:
        af->data->rate = *(int *)arg;
        return AF_OK;
    case AF_CONTROL_SET_PLAYBACK_SPEED_RESAMPLE: {
        s->playback_speed = *(double *)arg;
        int new_rate = rate_from_speed(s->ctx.in_rate_af, s->playback_speed);
        if (new_rate != s->ctx.in_rate && s->avrctx && af->fmt_out.format) {
            // Before reconfiguring, drain the audio that is still buffered
            // in the resampler.
            af->filter_frame(af, NULL);
            // Reinitialize resampler.
            configure_lavrr(af, &af->fmt_in, &af->fmt_out);
        }
        return AF_OK;
    }
    case AF_CONTROL_RESET:
        if (s->avrctx)
            drop_all_output(s);
        return AF_OK;
    }
    return AF_UNKNOWN;
}
Exemplo n.º 7
0
static int control(struct af_instance *af, int cmd, void *arg)
{
    struct af_resample *s = af->priv;

    switch (cmd) {
    case AF_CONTROL_REINIT: {
        struct mp_audio *in = arg;
        struct mp_audio *out = af->data;
        struct mp_audio orig_in = *in;

        if (((out->rate    == in->rate) || (out->rate == 0)) &&
                (out->format   == in->format) &&
                (mp_chmap_equals(&out->channels, &in->channels) || out->nch == 0) &&
                s->allow_detach && s->playback_speed == 1.0)
            return AF_DETACH;

        if (out->rate == 0)
            out->rate = in->rate;

        if (mp_chmap_is_empty(&out->channels))
            mp_audio_set_channels(out, &in->channels);

        if (af_to_avformat(in->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(in, AF_FORMAT_FLOAT);
        if (check_output_conversion(out->format) == AV_SAMPLE_FMT_NONE)
            mp_audio_set_format(out, in->format);

        int r = ((in->format == orig_in.format) &&
                 mp_chmap_equals(&in->channels, &orig_in.channels))
                ? AF_OK : AF_FALSE;

        if (r == AF_OK)
            r = configure_lavrr(af, in, out, true);
        return r;
    }
    case AF_CONTROL_SET_FORMAT: {
        int format = *(int *)arg;
        if (format && check_output_conversion(format) == AV_SAMPLE_FMT_NONE)
            return AF_FALSE;

        mp_audio_set_format(af->data, format);
        return AF_OK;
    }
    case AF_CONTROL_SET_CHANNELS: {
        mp_audio_set_channels(af->data, (struct mp_chmap *)arg);
        return AF_OK;
    }
    case AF_CONTROL_SET_RESAMPLE_RATE:
        af->data->rate = *(int *)arg;
        return AF_OK;
    case AF_CONTROL_SET_PLAYBACK_SPEED_RESAMPLE: {
        s->playback_speed = *(double *)arg;
        return AF_OK;
    }
    case AF_CONTROL_RESET:
        if (s->avrctx)
            drop_all_output(s);
        return AF_OK;
    }
    return AF_UNKNOWN;
}
Exemplo n.º 8
0
void mp_audio_set_channels(struct mp_audio *mpa, const struct mp_chmap *chmap)
{
    assert(mp_chmap_is_empty(chmap) || mp_chmap_is_valid(chmap));
    mpa->channels = *chmap;
    mpa->nch = mpa->channels.num;
}