25 #include "libavutil/intreadwrite.h"
29 #define LMLM4_I_FRAME 0x00
30 #define LMLM4_P_FRAME 0x01
31 #define LMLM4_B_FRAME 0x02
32 #define LMLM4_INVALID 0x03
33 #define LMLM4_MPEG1L2 0x04
35 #define LMLM4_MAX_PACKET_SIZE 1024 * 1024
38 const unsigned char *
buf = pd->
buf;
39 unsigned int frame_type, packet_size;
48 if ((
AV_RB16(buf+8) & 0xfffe) != 0xfffc)
53 }
else if (
AV_RB24(buf+8) == 0x000001) {
84 unsigned int frame_type, packet_size, padding,
frame_size;
89 padding = -packet_size & 511;
90 frame_size = packet_size - 8;
106 switch (frame_type) {
AVInputFormat ff_lmlm4_demuxer
AVCodecContext * codec
Codec context associated with this stream.
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static int lmlm4_read_header(AVFormatContext *s)
enum AVStreamParseType need_parsing
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
static const uint8_t frame_size[4]
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define LMLM4_MAX_PACKET_SIZE
int flags
A combination of AV_PKT_FLAG values.
static int lmlm4_probe(AVProbeData *pd)
enum AVMediaType codec_type
AVIOContext * pb
I/O context.
This structure contains the data a format has to probe a file.
static int lmlm4_read_packet(AVFormatContext *s, AVPacket *pkt)
This structure stores compressed data.