30 #include "libavutil/channel_layout.h"
31 #include "libavutil/intreadwrite.h"
36 #define VMD_HEADER_SIZE 0x0330
37 #define BYTES_PER_FRAME_RECORD 16
77 if ((!w || w > 2048 || !h || h > 2048) &&
90 unsigned int toc_offset;
91 unsigned char *raw_frame_table;
92 int raw_frame_table_size;
93 int64_t current_offset;
96 unsigned int total_frames;
97 int64_t current_audio_pts = 0;
109 if (width && height) {
123 vst->codec->codec_tag = 0;
124 vst->codec->width =
width;
125 vst->codec->height =
height;
126 if(vmd->
is_indeo3 && vst->codec->width > 320){
127 vst->codec->width >>= 1;
128 vst->codec->height >>= 1;
166 av_reduce(&num, &den, num, den, (1UL<<31)-1);
177 raw_frame_table = NULL;
185 raw_frame_table =
av_malloc(raw_frame_table_size);
191 if (
avio_read(pb, raw_frame_table, raw_frame_table_size) !=
192 raw_frame_table_size) {
200 current_offset =
AV_RL32(&raw_frame_table[6 * i + 2]);
210 if (size > INT_MAX / 2) {
215 if(!size && type != 1)
227 if(!current_audio_pts)
228 current_audio_pts += sound_buffers - 1;
241 current_offset +=
size;
void av_free_packet(AVPacket *pkt)
Free a packet.
int64_t pos
byte position in stream, -1 if unknown
AVCodecContext * codec
Codec context associated with this stream.
int index
stream index in AVFormatContext
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...
int64_t audio_sample_counter
#define AV_CH_LAYOUT_STEREO
unsigned int frames_per_block
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
unsigned int current_frame
static int vmd_read_close(AVFormatContext *s)
int ffio_limit(AVIOContext *s, int size)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static av_cold int read_close(AVFormatContext *ctx)
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
void * priv_data
Format private data.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
uint64_t channel_layout
Audio channel layout.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
int buf_size
Size of buf except extra allocated bytes.
int bit_rate
the average bitrate
AVInputFormat ff_vmd_demuxer
void * av_malloc(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define BYTES_PER_FRAME_RECORD
static int read_header(FFV1Context *f)
static int vmd_read_packet(AVFormatContext *s, AVPacket *pkt)
enum AVMediaType codec_type
int sample_rate
samples per second
static int vmd_read_header(AVFormatContext *s)
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)
BYTE int const BYTE int int int height
This structure contains the data a format has to probe a file.
unsigned char vmd_header[VMD_HEADER_SIZE]
unsigned char frame_record[BYTES_PER_FRAME_RECORD]
#define AVERROR_INVALIDDATA
int channels
number of audio channels
static int vmd_probe(AVProbeData *p)
#define AV_CH_LAYOUT_MONO
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...