scrcpy/app/src/packet_merger.c

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#include "packet_merger.h"
#include "util/log.h"
void
sc_packet_merger_init(struct sc_packet_merger *merger) {
merger->config = NULL;
}
void
sc_packet_merger_destroy(struct sc_packet_merger *merger) {
free(merger->config);
}
bool
sc_packet_merger_merge(struct sc_packet_merger *merger, AVPacket *packet) {
bool is_config = packet->pts == AV_NOPTS_VALUE;
if (is_config) {
free(merger->config);
merger->config = malloc(packet->size);
if (!merger->config) {
LOG_OOM();
return false;
}
memcpy(merger->config, packet->data, packet->size);
merger->config_size = packet->size;
} else if (merger->config) {
size_t config_size = merger->config_size;
size_t media_size = packet->size;
if (av_grow_packet(packet, config_size)) {
LOG_OOM();
return false;
}
memmove(packet->data + config_size, packet->data, media_size);
memcpy(packet->data, merger->config, config_size);
free(merger->config);
merger->config = NULL;
// merger->size is meaningless when merger->config is NULL
}
return true;
}