9ac466ad84
A video buffer had 2 responsibilities: - handle the frame delaying mechanism (queuing packets and pushing them after the expected delay); - keep only the most recent frame (using a sc_frame_buffer). In order to reuse only the frame delaying mechanism, extract it to a separate component, sc_delay_buffer.
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
#include "video_buffer.h"
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#include <assert.h>
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#include <stdlib.h>
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#include <libavutil/avutil.h>
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#include <libavformat/avformat.h>
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#include "util/log.h"
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static bool
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sc_delay_buffer_on_new_frame(struct sc_delay_buffer *db, const AVFrame *frame,
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void *userdata) {
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(void) db;
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struct sc_video_buffer *vb = userdata;
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bool previous_skipped;
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bool ok = sc_frame_buffer_push(&vb->fb, frame, &previous_skipped);
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if (!ok) {
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return false;
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}
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return vb->cbs->on_new_frame(vb, previous_skipped, vb->cbs_userdata);
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}
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bool
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sc_video_buffer_init(struct sc_video_buffer *vb, sc_tick delay,
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const struct sc_video_buffer_callbacks *cbs,
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void *cbs_userdata) {
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bool ok = sc_frame_buffer_init(&vb->fb);
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if (!ok) {
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return false;
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}
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static const struct sc_delay_buffer_callbacks db_cbs = {
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.on_new_frame = sc_delay_buffer_on_new_frame,
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};
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ok = sc_delay_buffer_init(&vb->db, delay, &db_cbs, vb);
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if (!ok) {
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sc_frame_buffer_destroy(&vb->fb);
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return false;
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}
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assert(cbs);
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assert(cbs->on_new_frame);
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vb->cbs = cbs;
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vb->cbs_userdata = cbs_userdata;
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return true;
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}
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bool
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sc_video_buffer_start(struct sc_video_buffer *vb) {
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return sc_delay_buffer_start(&vb->db);
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}
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void
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sc_video_buffer_stop(struct sc_video_buffer *vb) {
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return sc_delay_buffer_stop(&vb->db);
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}
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void
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sc_video_buffer_join(struct sc_video_buffer *vb) {
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return sc_delay_buffer_join(&vb->db);
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}
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void
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sc_video_buffer_destroy(struct sc_video_buffer *vb) {
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sc_frame_buffer_destroy(&vb->fb);
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sc_delay_buffer_destroy(&vb->db);
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}
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bool
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sc_video_buffer_push(struct sc_video_buffer *vb, const AVFrame *frame) {
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return sc_delay_buffer_push(&vb->db, frame);
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}
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void
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sc_video_buffer_consume(struct sc_video_buffer *vb, AVFrame *dst) {
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sc_frame_buffer_consume(&vb->fb, dst);
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}
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