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; }
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; }
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; }