29 #define MAX_YUV4_HEADER 80
30 #define MAX_FRAME_HEADER 80
36 char *tokstart, *tokend, *header_end;
40 rated = 0, aspectn = 0, aspectd = 0;
48 if (header[i] ==
'\n') {
55 if (i == MAX_YUV4_HEADER)
60 header_end = &header[i + 1];
61 for (tokstart = &header[strlen(
Y4M_MAGIC) + 1];
62 tokstart < header_end; tokstart++) {
63 if (*tokstart == 0x20)
65 switch (*tokstart++) {
67 width = strtol(tokstart, &tokend, 10);
71 height = strtol(tokstart, &tokend, 10);
75 if (strncmp(
"420jpeg", tokstart, 7) == 0) {
78 }
else if (strncmp(
"420mpeg2", tokstart, 8) == 0) {
81 }
else if (strncmp(
"420paldv", tokstart, 8) == 0) {
84 }
else if (strncmp(
"420p16", tokstart, 6) == 0) {
86 }
else if (strncmp(
"422p16", tokstart, 6) == 0) {
88 }
else if (strncmp(
"444p16", tokstart, 6) == 0) {
90 }
else if (strncmp(
"420p14", tokstart, 6) == 0) {
92 }
else if (strncmp(
"422p14", tokstart, 6) == 0) {
94 }
else if (strncmp(
"444p14", tokstart, 6) == 0) {
96 }
else if (strncmp(
"420p12", tokstart, 6) == 0) {
98 }
else if (strncmp(
"422p12", tokstart, 6) == 0) {
100 }
else if (strncmp(
"444p12", tokstart, 6) == 0) {
102 }
else if (strncmp(
"420p10", tokstart, 6) == 0) {
104 }
else if (strncmp(
"422p10", tokstart, 6) == 0) {
106 }
else if (strncmp(
"444p10", tokstart, 6) == 0) {
108 }
else if (strncmp(
"420p9", tokstart, 5) == 0) {
110 }
else if (strncmp(
"422p9", tokstart, 5) == 0) {
112 }
else if (strncmp(
"444p9", tokstart, 5) == 0) {
114 }
else if (strncmp(
"420", tokstart, 3) == 0) {
117 }
else if (strncmp(
"411", tokstart, 3) == 0) {
119 }
else if (strncmp(
"422", tokstart, 3) == 0) {
121 }
else if (strncmp(
"444alpha", tokstart, 8) == 0 ) {
123 "YUV4MPEG stream.\n");
125 }
else if (strncmp(
"444", tokstart, 3) == 0) {
127 }
else if (strncmp(
"mono16", tokstart, 6) == 0) {
129 }
else if (strncmp(
"mono", tokstart, 4) == 0) {
136 while (tokstart < header_end && *tokstart != 0x20)
140 switch (*tokstart++){
155 "interlaced and non-interlaced frames.\n");
162 sscanf(tokstart,
"%d:%d", &raten, &rated);
163 while (tokstart < header_end && *tokstart != 0x20)
167 sscanf(tokstart,
"%d:%d", &aspectn, &aspectd);
168 while (tokstart < header_end && *tokstart != 0x20)
172 if (strncmp(
"YSCSS=", tokstart, 6) == 0) {
175 if (strncmp(
"420JPEG", tokstart, 7) == 0)
177 else if (strncmp(
"420MPEG2", tokstart, 8) == 0)
179 else if (strncmp(
"420PALDV", tokstart, 8) == 0)
181 else if (strncmp(
"420P9", tokstart, 5) == 0)
183 else if (strncmp(
"422P9", tokstart, 5) == 0)
185 else if (strncmp(
"444P9", tokstart, 5) == 0)
187 else if (strncmp(
"420P10", tokstart, 6) == 0)
189 else if (strncmp(
"422P10", tokstart, 6) == 0)
191 else if (strncmp(
"444P10", tokstart, 6) == 0)
193 else if (strncmp(
"420P12", tokstart, 6) == 0)
195 else if (strncmp(
"422P12", tokstart, 6) == 0)
197 else if (strncmp(
"444P12", tokstart, 6) == 0)
199 else if (strncmp(
"420P14", tokstart, 6) == 0)
201 else if (strncmp(
"422P14", tokstart, 6) == 0)
203 else if (strncmp(
"444P14", tokstart, 6) == 0)
205 else if (strncmp(
"420P16", tokstart, 6) == 0)
207 else if (strncmp(
"422P16", tokstart, 6) == 0)
209 else if (strncmp(
"444P16", tokstart, 6) == 0)
211 else if (strncmp(
"411", tokstart, 3) == 0)
213 else if (strncmp(
"422", tokstart, 3) == 0)
215 else if (strncmp(
"444", tokstart, 3) == 0)
218 while (tokstart < header_end && *tokstart != 0x20)
224 if (width == -1 ||
height == -1) {
233 pix_fmt = alt_pix_fmt;
236 if (raten <= 0 || rated <= 0) {
242 if (aspectn == 0 && aspectd == 0) {
252 av_reduce(&raten, &rated, raten, rated, (1UL << 31) - 1);
280 if (header[i] ==
'\n') {
289 else if (i == MAX_FRAME_HEADER)
324 .
name =
"yuv4mpegpipe",
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static enum AVPixelFormat pix_fmt
int64_t avio_size(AVIOContext *s)
Get the filesize.
mpeg2/4 4:2:0, h264 default for 4:2:0
#define AV_PIX_FMT_YUV444P14
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
AVFormatInternal * internal
An opaque field for libavformat internal usage.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
#define AV_PIX_FMT_YUV420P12
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_EOF
End of file.
#define AV_PIX_FMT_YUV444P16
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
static const uint8_t header[24]
#define AV_PIX_FMT_YUV422P12
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters...
static int yuv4_read_packet(AVFormatContext *s, AVPacket *pkt)
#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 AV_PIX_FMT_YUV444P10
AVRational avg_frame_rate
Average framerate.
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int avio_r8(AVIOContext *s)
AVCodecContext * codec
Codec context associated with this stream.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
#define AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_GRAY16
int width
picture width / height.
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
static int yuv4_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
#define AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P14
enum AVMediaType codec_type
static int yuv4_read_header(AVFormatContext *s)
AVIOContext * pb
I/O context.
BYTE int const BYTE int int int height
#define AV_PIX_FMT_YUV420P10
rational number numerator/denominator
#define AV_PIX_FMT_YUV420P9
int error
contains the error code or 0 if no error happened
This structure contains the data a format has to probe a file.
#define AV_PIX_FMT_YUV422P14
static int64_t pts
Global timestamp for the audio frames.
#define AV_PIX_FMT_YUV422P10
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
#define AV_PIX_FMT_YUV444P12
int64_t duration
Decoding: duration of the stream, in stream time base.
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
int eof_reached
true if eof reached
AVInputFormat ff_yuv4mpegpipe_demuxer
static int yuv4_probe(AVProbeData *pd)
#define Y4M_FRAME_MAGIC_LEN
enum AVFieldOrder field_order
Field order.
AVChromaLocation
Location of chroma samples.
mpeg1 4:2:0, jpeg 4:2:0, h263 4:2:0
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
AVPixelFormat
Pixel format.
This structure stores compressed data.
#define AV_PIX_FMT_YUV422P16
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...