/* Read a frame from the input and save it in the buffer */
static int read_frame(AVFilterContext *ctx, FPSContext *s, AVFilterLink *inlink, AVFilterLink *outlink)
{
AVFrame *frame;
int ret;
int64_t in_pts;
/* Must only be called when we have buffer room available */
av_assert1(s->frames_count < 2);
ret = ff_inlink_consume_frame(inlink, &frame);
/* Caller must have run ff_inlink_check_available_frame first */
av_assert1(ret);
if (ret < 0)
return ret;
/* Convert frame pts to output timebase.
* The dance with offsets is required to match the rounding behaviour of the
* previous version of the fps filter when using the start_time option. */
in_pts = frame->pts;
frame->pts = s->out_pts_off + av_rescale_q_rnd(in_pts - s->in_pts_off,
inlink->time_base, outlink->time_base,
s->rounding | AV_ROUND_PASS_MINMAX);
av_log(ctx, AV_LOG_DEBUG, "Read frame with in pts %"PRId64", out pts %"PRId64"\n",
in_pts, frame->pts);
s->frames[s->frames_count++] = frame;
s->frames_in++;
return 1;
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *in;
int64_t pts;
int ret, status;
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
ret = ff_inlink_consume_frame(inlink, &in);
if (ret < 0)
return ret;
if (ret > 0)
return filter_frame(inlink, in);
if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
if (status == AVERROR_EOF) {
int64_t out_pts = pts;
ret = flush_frame(outlink, pts, &out_pts);
ff_outlink_set_status(outlink, status, out_pts);
return ret;
}
}
FF_FILTER_FORWARD_WANTED(outlink, inlink);
return FFERROR_NOT_READY;
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *outlink = ctx->outputs[0];
AlphaMergeContext *s = ctx->priv;
int ret;
FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, ctx);
if (!s->main_frame) {
ret = ff_inlink_consume_frame(ctx->inputs[0], &s->main_frame);
if (ret < 0)
return ret;
}
if (!s->alpha_frame) {
ret = ff_inlink_consume_frame(ctx->inputs[1], &s->alpha_frame);
if (ret < 0)
return ret;
}
if (s->main_frame && s->alpha_frame) {
draw_frame(ctx, s->main_frame, s->alpha_frame);
ret = ff_filter_frame(outlink, s->main_frame);
av_frame_free(&s->alpha_frame);
s->main_frame = NULL;
return ret;
}
FF_FILTER_FORWARD_STATUS(ctx->inputs[0], outlink);
FF_FILTER_FORWARD_STATUS(ctx->inputs[1], outlink);
if (ff_outlink_frame_wanted(ctx->outputs[0]) &&
!ff_outlink_get_status(ctx->inputs[0]) &&
!s->main_frame) {
ff_inlink_request_frame(ctx->inputs[0]);
return 0;
}
if (ff_outlink_frame_wanted(ctx->outputs[0]) &&
!ff_outlink_get_status(ctx->inputs[1]) &&
!s->alpha_frame) {
ff_inlink_request_frame(ctx->inputs[1]);
return 0;
}
return FFERROR_NOT_READY;
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
CueContext *s = ctx->priv;
int64_t pts;
AVFrame *frame = NULL;
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
if (s->status < 3 || s->status == 5) {
int ret = ff_inlink_consume_frame(inlink, &frame);
if (ret < 0)
return ret;
if (frame)
pts = av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q);
}
if (!s->status && frame) {
s->first_pts = pts;
s->status++;
}
if (s->status == 1 && frame) {
if (pts - s->first_pts < s->preroll)
return ff_filter_frame(outlink, frame);
s->first_pts = pts;
s->status++;
}
if (s->status == 2 && frame) {
int ret = ff_framequeue_add(&s->queue, frame);
if (ret < 0) {
av_frame_free(&frame);
return ret;
}
frame = NULL;
if (!(pts - s->first_pts < s->buffer && (av_gettime() - s->cue) < 0))
s->status++;
}
if (s->status == 3) {
int64_t diff;
while ((diff = (av_gettime() - s->cue)) < 0)
av_usleep(av_clip(-diff / 2, 100, 1000000));
s->status++;
}
if (s->status == 4) {
if (ff_framequeue_queued_frames(&s->queue))
return ff_filter_frame(outlink, ff_framequeue_take(&s->queue));
s->status++;
}
if (s->status == 5 && frame)
return ff_filter_frame(outlink, frame);
FF_FILTER_FORWARD_STATUS(inlink, outlink);
FF_FILTER_FORWARD_WANTED(outlink, inlink);
return FFERROR_NOT_READY;
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
LoopContext *s = ctx->priv;
AVFrame *frame = NULL;
int ret, status;
int64_t pts;
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
if (!s->eof && (s->nb_frames < s->size || !s->loop)) {
ret = ff_inlink_consume_frame(inlink, &frame);
if (ret < 0)
return ret;
if (ret > 0)
return filter_frame(inlink, frame);
}
if (!s->eof && ff_inlink_acknowledge_status(inlink, &status, &pts)) {
if (status == AVERROR_EOF)
s->eof = 1;
}
if (s->eof && (s->loop == 0 || s->nb_frames < s->size)) {
ff_outlink_set_status(outlink, AVERROR_EOF, s->duration);
return 0;
}
if (!s->eof && (!s->size ||
(s->nb_frames < s->size) ||
(s->nb_frames >= s->size && s->loop == 0))) {
FF_FILTER_FORWARD_WANTED(outlink, inlink);
} else if (s->loop && s->nb_frames == s->size) {
return push_frame(ctx);
}
return FFERROR_NOT_READY;
}
static int activate(AVFilterContext *ctx)
{
SidechainCompressContext *s = ctx->priv;
AVFrame *out = NULL, *in[2] = { NULL };
int ret, i, nb_samples;
double *dst;
FF_FILTER_FORWARD_STATUS_BACK_ALL(ctx->outputs[0], ctx);
if ((ret = ff_inlink_consume_frame(ctx->inputs[0], &in[0])) > 0) {
av_audio_fifo_write(s->fifo[0], (void **)in[0]->extended_data,
in[0]->nb_samples);
av_frame_free(&in[0]);
}
if (ret < 0)
return ret;
if ((ret = ff_inlink_consume_frame(ctx->inputs[1], &in[1])) > 0) {
av_audio_fifo_write(s->fifo[1], (void **)in[1]->extended_data,
in[1]->nb_samples);
av_frame_free(&in[1]);
}
if (ret < 0)
return ret;
nb_samples = FFMIN(av_audio_fifo_size(s->fifo[0]), av_audio_fifo_size(s->fifo[1]));
if (nb_samples) {
out = ff_get_audio_buffer(ctx->outputs[0], nb_samples);
if (!out)
return AVERROR(ENOMEM);
for (i = 0; i < 2; i++) {
in[i] = ff_get_audio_buffer(ctx->inputs[i], nb_samples);
if (!in[i]) {
av_frame_free(&in[0]);
av_frame_free(&in[1]);
av_frame_free(&out);
return AVERROR(ENOMEM);
}
av_audio_fifo_read(s->fifo[i], (void **)in[i]->data, nb_samples);
}
dst = (double *)out->data[0];
out->pts = s->pts;
s->pts += nb_samples;
compressor(s, (double *)in[0]->data[0], dst,
(double *)in[1]->data[0], nb_samples,
s->level_in, s->level_sc,
ctx->inputs[0], ctx->inputs[1]);
av_frame_free(&in[0]);
av_frame_free(&in[1]);
ret = ff_filter_frame(ctx->outputs[0], out);
if (ret < 0)
return ret;
}
FF_FILTER_FORWARD_STATUS(ctx->inputs[0], ctx->outputs[0]);
FF_FILTER_FORWARD_STATUS(ctx->inputs[1], ctx->outputs[0]);
if (ff_outlink_frame_wanted(ctx->outputs[0])) {
if (!av_audio_fifo_size(s->fifo[0]))
ff_inlink_request_frame(ctx->inputs[0]);
if (!av_audio_fifo_size(s->fifo[1]))
ff_inlink_request_frame(ctx->inputs[1]);
}
return 0;
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *outlink = ctx->outputs[0];
MixContext *s = ctx->priv;
AVFrame *buf = NULL;
int i, ret;
for (i = 0; i < s->nb_inputs; i++) {
AVFilterLink *inlink = ctx->inputs[i];
if ((ret = ff_inlink_consume_frame(ctx->inputs[i], &buf)) > 0) {
if (i == 0) {
int64_t pts = av_rescale_q(buf->pts, inlink->time_base,
outlink->time_base);
ret = frame_list_add_frame(s->frame_list, buf->nb_samples, pts);
if (ret < 0) {
av_frame_free(&buf);
return ret;
}
}
ret = av_audio_fifo_write(s->fifos[i], (void **)buf->extended_data,
buf->nb_samples);
if (ret < 0) {
av_frame_free(&buf);
return ret;
}
av_frame_free(&buf);
ret = output_frame(outlink);
if (ret < 0)
return ret;
}
}
for (i = 0; i < s->nb_inputs; i++) {
int64_t pts;
int status;
if (ff_inlink_acknowledge_status(ctx->inputs[i], &status, &pts)) {
if (status == AVERROR_EOF) {
if (i == 0) {
s->input_state[i] = 0;
if (s->nb_inputs == 1) {
ff_outlink_set_status(outlink, status, pts);
return 0;
}
} else {
s->input_state[i] |= INPUT_EOF;
if (av_audio_fifo_size(s->fifos[i]) == 0) {
s->input_state[i] = 0;
}
}
}
}
}
if (calc_active_inputs(s)) {
ff_outlink_set_status(outlink, AVERROR_EOF, s->next_pts);
return 0;
}
if (ff_outlink_frame_wanted(outlink)) {
int wanted_samples;
if (!(s->input_state[0] & INPUT_ON))
return request_samples(ctx, 1);
if (s->frame_list->nb_frames == 0) {
ff_inlink_request_frame(ctx->inputs[0]);
return 0;
}
av_assert0(s->frame_list->nb_frames > 0);
wanted_samples = frame_list_next_frame_size(s->frame_list);
return request_samples(ctx, wanted_samples);
}
return 0;
}
static int activate(AVFilterContext *ctx)
{
ZPContext *s = ctx->priv;
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
int status, ret = 0;
int64_t pts;
if (s->in && ff_outlink_frame_wanted(outlink)) {
double zoom = -1, dx = -1, dy = -1;
ret = output_single_frame(ctx, s->in, s->var_values, s->current_frame,
&zoom, &dx, &dy);
if (ret < 0)
return ret;
}
if (!s->in && (ret = ff_inlink_consume_frame(inlink, &s->in)) > 0) {
double zoom = -1, dx = -1, dy = -1, nb_frames;
s->finished = 0;
s->var_values[VAR_IN_W] = s->var_values[VAR_IW] = s->in->width;
s->var_values[VAR_IN_H] = s->var_values[VAR_IH] = s->in->height;
s->var_values[VAR_OUT_W] = s->var_values[VAR_OW] = s->w;
s->var_values[VAR_OUT_H] = s->var_values[VAR_OH] = s->h;
s->var_values[VAR_IN] = inlink->frame_count_out + 1;
s->var_values[VAR_ON] = outlink->frame_count_in + 1;
s->var_values[VAR_PX] = s->x;
s->var_values[VAR_PY] = s->y;
s->var_values[VAR_X] = 0;
s->var_values[VAR_Y] = 0;
s->var_values[VAR_PZOOM] = s->prev_zoom;
s->var_values[VAR_ZOOM] = 1;
s->var_values[VAR_PDURATION] = s->prev_nb_frames;
s->var_values[VAR_A] = (double) s->in->width / s->in->height;
s->var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
(double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
s->var_values[VAR_DAR] = s->var_values[VAR_A] * s->var_values[VAR_SAR];
s->var_values[VAR_HSUB] = 1 << s->desc->log2_chroma_w;
s->var_values[VAR_VSUB] = 1 << s->desc->log2_chroma_h;
if ((ret = av_expr_parse_and_eval(&nb_frames, s->duration_expr_str,
var_names, s->var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) {
av_frame_free(&s->in);
return ret;
}
s->var_values[VAR_DURATION] = s->nb_frames = nb_frames;
ret = output_single_frame(ctx, s->in, s->var_values, s->current_frame,
&zoom, &dx, &dy);
if (ret < 0)
return ret;
}
if (ret < 0) {
return ret;
} else if (s->finished && ff_inlink_acknowledge_status(inlink, &status, &pts)) {
ff_outlink_set_status(outlink, status, pts);
return 0;
} else {
if (ff_outlink_frame_wanted(outlink) && s->finished)
ff_inlink_request_frame(inlink);
return 0;
}
}
