42 probe_packet->
buf[6] &&
43 probe_packet->
buf[7] &&
44 !(probe_packet->
buf[8] & 1) &&
45 !(probe_packet->
buf[10] & 1))
57 AVStream *audio_stream, *video_stream;
74 audio_dec = audio_stream->
codec;
82 video_dec = video_stream->
codec;
89 yop->frame_size =
avio_r8(pb) * 2048;
99 yop->palette_size = video_dec->
extradata[0] * 3 + 4;
103 if (yop->audio_block_length < 920 ||
104 yop->audio_block_length + yop->palette_size >= yop->frame_size) {
122 int actual_video_data_size = yop->frame_size -
123 yop->audio_block_length - yop->palette_size;
125 yop->video_packet.stream_index = 1;
127 if (yop->video_packet.data) {
128 *pkt = yop->video_packet;
129 yop->video_packet.data =
NULL;
130 yop->video_packet.size = 0;
131 pkt->
data[0] = yop->odd_frame;
137 yop->frame_size - yop->audio_block_length);
143 ret =
avio_read(pb, yop->video_packet.data, yop->palette_size);
146 }
else if (ret < yop->palette_size) {
156 pkt->
pos = yop->video_packet.pos;
158 avio_skip(pb, yop->audio_block_length - ret);
160 ret =
avio_read(pb, yop->video_packet.data + yop->palette_size,
161 actual_video_data_size);
164 else if (ret < actual_video_data_size)
168 return yop->audio_block_length;
183 int64_t timestamp,
int flags)
186 int64_t frame_pos, pos_min, pos_max;
194 frame_count = (pos_max - pos_min) / yop->frame_size;
196 timestamp =
FFMAX(0,
FFMIN(frame_count, timestamp));
198 frame_pos = timestamp * yop->frame_size + pos_min;
204 yop->odd_frame = timestamp & 1;