25 #include "libavutil/intreadwrite.h"
29 #define HNM4_TAG MKTAG('H', 'N', 'M', '4')
31 #define HNM4_SAMPLE_RATE 22050
32 #define HNM4_FRAME_FPS 24
34 #define HNM4_CHUNK_ID_PL 19536
35 #define HNM4_CHUNK_ID_IZ 23113
36 #define HNM4_CHUNK_ID_IU 21833
37 #define HNM4_CHUNK_ID_SD 17491
98 "invalid resolution: %ux%u\n", hnm->
width, hnm->
height);
103 if (hnm->
width == 640)
134 uint32_t superchunk_size, chunk_size;
155 "invalid chunk size: %"PRIu32
", offset: %"PRId64
"\n",
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
void av_free_packet(AVPacket *pkt)
Free a packet.
static int hnm_probe(AVProbeData *p)
#define AV_LOG_WARNING
Something somehow does not look correct.
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...
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static int hnm_read_packet(AVFormatContext *s, AVPacket *pkt)
#define AVERROR_EOF
End of file.
static av_cold int read_close(AVFormatContext *ctx)
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * priv_data
Format private data.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int buf_size
Size of buf except extra allocated bytes.
uint32_t superchunk_remaining
int width
picture width / height.
AVInputFormat ff_hnm_demuxer
static int hnm_read_header(AVFormatContext *s)
static int read_header(FFV1Context *f)
static int hnm_read_close(AVFormatContext *s)
enum AVMediaType codec_type
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
AVIOContext * pb
I/O context.
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
This structure contains the data a format has to probe a file.
int64_t start_time
Decoding: pts of the first frame of the stream, in stream time base.
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
int eof_reached
true if eof reached
This structure stores compressed data.
void * av_mallocz(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...