34 return c ==
' ' || c ==
'\n' || c ==
'\r' || c ==
'\t';
48 while (c !=
'\n' && bs < end) {
57 while (bs < end && !
pnm_space(c) && (s - str) < buf_size - 1) {
67 char buf1[32], tuple_type[32];
68 int h,
w, depth, maxval;
85 }
else if (s->
type==1 || s->
type==4) {
87 }
else if (s->
type==2 || s->
type==5) {
92 }
else if (s->
type==3 || s->
type==6) {
94 }
else if (s->
type==7) {
101 pnm_get(s, buf1,
sizeof(buf1));
102 if (!strcmp(buf1,
"WIDTH")) {
103 pnm_get(s, buf1,
sizeof(buf1));
104 w = strtol(buf1,
NULL, 10);
105 }
else if (!strcmp(buf1,
"HEIGHT")) {
106 pnm_get(s, buf1,
sizeof(buf1));
107 h = strtol(buf1,
NULL, 10);
108 }
else if (!strcmp(buf1,
"DEPTH")) {
109 pnm_get(s, buf1,
sizeof(buf1));
110 depth = strtol(buf1,
NULL, 10);
111 }
else if (!strcmp(buf1,
"MAXVAL")) {
112 pnm_get(s, buf1,
sizeof(buf1));
113 maxval = strtol(buf1,
NULL, 10);
114 }
else if (!strcmp(buf1,
"TUPLTYPE") ||
116 !strcmp(buf1,
"TUPLETYPE")) {
117 pnm_get(s, tuple_type,
sizeof(tuple_type));
118 }
else if (!strcmp(buf1,
"ENDHDR")) {
128 if (w <= 0 || h <= 0 || maxval <= 0 || maxval > UINT16_MAX || depth <= 0 || tuple_type[0] ==
'\0' ||
139 }
else if (maxval < 256) {
144 }
else if (depth == 2) {
150 }
else if (depth == 3) {
156 }
else if (depth == 4) {
169 pnm_get(s, buf1,
sizeof(buf1));
171 pnm_get(s, buf1,
sizeof(buf1));
181 pnm_get(s, buf1,
sizeof(buf1));
188 s->
maxval = (1ULL << 32) - 1;
190 pnm_get(s, buf1,
sizeof(buf1));
204 else if (s->
maxval < 1024)
222 if ((avctx->
width & 1) != 0)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
static int pnm_space(int c)
packed RGB 8:8:8, 24bpp, RGBRGB...
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
#define AV_PIX_FMT_RGBA64
int maxval
maximum value of a pixel
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static av_cold int end(AVCodecContext *avctx)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
simple assert() macros that are a bit more flexible than ISO C assert().
static void pnm_get(PNMContext *sc, char *str, int buf_size)
int av_sscanf(const char *string, const char *format,...)
See libc sscanf manual for more information.
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
#define AV_PIX_FMT_GRAY16
int width
picture width / height.
#define AV_PIX_FMT_YUV420P16
Libavcodec external API header.
int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext *const s)
main external API structure.
#define AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_GBRPF32
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
common internal api header.
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb...
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.