mirror of https://github.com/mpv-player/mpv.git
142 lines
3.8 KiB
C
142 lines
3.8 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "audio/aframe.h"
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#include "audio/format.h"
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#include "filters/f_autoconvert.h"
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#include "filters/filter_internal.h"
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#include "filters/user_filters.h"
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#include "options/m_option.h"
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struct f_opts {
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int in_format;
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int in_srate;
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struct m_channels in_channels;
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int out_format;
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int out_srate;
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struct m_channels out_channels;
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int fail;
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};
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struct priv {
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struct f_opts *opts;
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struct mp_pin *in_pin;
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};
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static void process(struct mp_filter *f)
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{
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struct priv *p = f->priv;
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if (!mp_pin_can_transfer_data(f->ppins[1], p->in_pin))
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return;
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struct mp_frame frame = mp_pin_out_read(p->in_pin);
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if (p->opts->fail) {
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MP_ERR(f, "Failing on purpose.\n");
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goto error;
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}
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if (frame.type == MP_FRAME_EOF) {
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mp_pin_in_write(f->ppins[1], frame);
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return;
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}
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if (frame.type != MP_FRAME_AUDIO) {
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MP_ERR(f, "audio frame expected\n");
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goto error;
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}
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struct mp_aframe *in = frame.data;
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if (p->opts->out_channels.num_chmaps > 0) {
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if (!mp_aframe_set_chmap(in, &p->opts->out_channels.chmaps[0])) {
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MP_ERR(f, "could not force output channels\n");
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goto error;
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}
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}
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if (p->opts->out_srate)
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mp_aframe_set_rate(in, p->opts->out_srate);
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mp_pin_in_write(f->ppins[1], frame);
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return;
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error:
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mp_frame_unref(&frame);
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mp_filter_internal_mark_failed(f);
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}
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static const struct mp_filter_info af_format_filter = {
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.name = "format",
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.priv_size = sizeof(struct priv),
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.process = process,
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};
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static struct mp_filter *af_format_create(struct mp_filter *parent,
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void *options)
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{
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struct mp_filter *f = mp_filter_create(parent, &af_format_filter);
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if (!f) {
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talloc_free(options);
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return NULL;
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}
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struct priv *p = f->priv;
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p->opts = talloc_steal(p, options);
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mp_filter_add_pin(f, MP_PIN_IN, "in");
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mp_filter_add_pin(f, MP_PIN_OUT, "out");
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struct mp_autoconvert *conv = mp_autoconvert_create(f);
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if (!conv)
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abort();
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if (p->opts->in_format)
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mp_autoconvert_add_afmt(conv, p->opts->in_format);
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if (p->opts->in_srate)
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mp_autoconvert_add_srate(conv, p->opts->in_srate);
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if (p->opts->in_channels.num_chmaps > 0)
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mp_autoconvert_add_chmap(conv, &p->opts->in_channels.chmaps[0]);
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mp_pin_connect(conv->f->pins[0], f->ppins[0]);
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p->in_pin = conv->f->pins[1];
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return f;
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}
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#define OPT_BASE_STRUCT struct f_opts
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const struct mp_user_filter_entry af_format = {
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.desc = {
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.name = "format",
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.description = "Force audio format",
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.priv_size = sizeof(struct f_opts),
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.options = (const struct m_option[]) {
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{"format", OPT_AUDIOFORMAT(in_format)},
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{"srate", OPT_INT(in_srate), M_RANGE(1000, 8*48000)},
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{"channels", OPT_CHANNELS(in_channels), .min = 1},
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{"out-srate", OPT_INT(out_srate), M_RANGE(1000, 8*48000)},
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{"out-channels", OPT_CHANNELS(out_channels), .min = 1},
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{"fail", OPT_FLAG(fail)},
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{0}
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},
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},
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.create = af_format_create,
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};
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