static void flv_video(struct serializer *s, struct encoder_packet *packet,
bool is_header)
{
int64_t offset = packet->pts - packet->dts;
int32_t time_ms = get_ms_time(packet, packet->dts);
if (!packet->data || !packet->size)
return;
s_w8(s, RTMP_PACKET_TYPE_VIDEO);
#ifdef DEBUG_TIMESTAMPS
blog(LOG_DEBUG, "Video: %lu", time_ms);
#endif
s_wb24(s, (uint32_t)packet->size + 5);
s_wb24(s, time_ms);
s_w8(s, (time_ms >> 24) & 0x7F);
s_wb24(s, 0);
/* these are the 5 extra bytes mentioned above */
s_w8(s, packet->keyframe ? 0x17 : 0x27);
s_w8(s, is_header ? 0 : 1);
s_wb24(s, get_ms_time(packet, offset));
s_write(s, packet->data, packet->size);
/* write tag size (starting byte doesnt count) */
s_wb32(s, (uint32_t)serializer_get_pos(s) + 4 - 1);
}
static void flv_audio(struct serializer *s, struct encoder_packet *packet,
bool is_header)
{
int32_t time_ms = get_ms_time(packet, packet->dts);
if (!packet->data || !packet->size)
return;
s_w8(s, RTMP_PACKET_TYPE_AUDIO);
#ifdef DEBUG_TIMESTAMPS
blog(LOG_DEBUG, "Audio: %lu", time_ms);
#endif
s_wb24(s, (uint32_t)packet->size + 2);
s_wb24(s, time_ms);
s_w8(s, (time_ms >> 24) & 0x7F);
s_wb24(s, 0);
/* these are the two extra bytes mentioned above */
s_w8(s, 0xaf);
s_w8(s, is_header ? 0 : 1);
s_write(s, packet->data, packet->size);
/* write tag size (starting byte doesnt count) */
s_wb32(s, (uint32_t)serializer_get_pos(s) + 4 - 1);
}
bool flv_meta_data(obs_output_t *context, uint8_t **output, size_t *size,
bool write_header, size_t audio_idx)
{
struct array_output_data data;
struct serializer s;
uint8_t *meta_data = NULL;
size_t meta_data_size;
uint32_t start_pos;
array_output_serializer_init(&s, &data);
if (!build_flv_meta_data(context, &meta_data, &meta_data_size,
audio_idx)) {
bfree(meta_data);
return false;
}
if (write_header) {
s_write(&s, "FLV", 3);
s_w8(&s, 1);
s_w8(&s, 5);
s_wb32(&s, 9);
s_wb32(&s, 0);
}
start_pos = serializer_get_pos(&s);
s_w8(&s, RTMP_PACKET_TYPE_INFO);
s_wb24(&s, (uint32_t)meta_data_size);
s_wb32(&s, 0);
s_wb24(&s, 0);
s_write(&s, meta_data, meta_data_size);
s_wb32(&s, (uint32_t)serializer_get_pos(&s) - start_pos - 1);
*output = data.bytes.array;
*size = data.bytes.num;
bfree(meta_data);
return true;
}
void flv_meta_data(obs_output_t context, uint8_t **output, size_t *size)
{
struct array_output_data data;
struct serializer s;
uint8_t *meta_data;
size_t meta_data_size;
uint32_t start_pos;
array_output_serializer_init(&s, &data);
build_flv_meta_data(context, &meta_data, &meta_data_size);
#ifdef WRITE_FLV_HEADER
s_write(&s, "FLV", 3);
s_w8(&s, 1);
s_w8(&s, 5);
s_wb32(&s, 9);
s_wb32(&s, 0);
#endif
start_pos = serializer_get_pos(&s);
s_w8(&s, RTMP_PACKET_TYPE_INFO);
s_wb24(&s, (uint32_t)meta_data_size);
s_wb32(&s, 0);
s_wb24(&s, 0);
s_write(&s, meta_data, meta_data_size);
s_wb32(&s, (uint32_t)serializer_get_pos(&s) - start_pos + 4 - 1);
*output = data.bytes.array;
*size = data.bytes.num;
bfree(meta_data);
}