33 for (i=0; i<n/2; i++) {
34 ((uint16_t *)dst)[
i] =
AV_RB16(src+2*i);
43 int buf_size = avpkt->
size;
46 int i, j, k, n, linesize,
h, upgrade = 0, is_mono = 0;
48 int components, sample_len, ret;
101 n = avctx->
width * 2;
106 n = avctx->
width * 2;
113 n = avctx->
width * 4;
121 n = (avctx->
width + 7) >> 3;
130 if(s->
type < 4 || (is_mono && s->
type==7)){
131 for (i=0; i<avctx->
height; i++) {
134 for(j=0; j<avctx->
width * components; j++){
147 for (k = 0; k < 6 && c <= 9; k += 1) {
156 if (sample_len == 16) {
157 ((uint16_t*)ptr)[j] = (((1<<sample_len)-1)*v + (s->
maxval>>1))/s->
maxval;
161 if (sample_len != 16)
166 for (i = 0; i < avctx->
height; i++) {
169 else if (upgrade == 1) {
171 for (j = 0; j < n; j++)
173 }
else if (upgrade == 2) {
174 unsigned int j, v,
f = (65535 * 32768 + s->
maxval / 2) / s->
maxval;
175 for (j = 0; j < n / 2; j++) {
177 ((uint16_t *)ptr)[j] = (v * f + 16384) >> 15;
189 unsigned char *ptr1, *ptr2;
198 for (i = 0; i < avctx->
height; i++) {
207 for (i = 0; i <
h; i++) {
219 uint16_t *ptr1, *ptr2;
223 n = avctx->
width * 2;
228 for (i = 0; i < avctx->
height; i++) {
229 for (j = 0; j < n / 2; j++) {
231 ((uint16_t *)ptr)[j] = (v * f + 16384) >> 15;
236 ptr1 = (uint16_t*)p->
data[1];
237 ptr2 = (uint16_t*)p->
data[2];
240 for (i = 0; i <
h; i++) {
241 for (j = 0; j < n / 2; j++) {
243 ptr1[j] = (v * f + 16384) >> 15;
247 for (j = 0; j < n / 2; j++) {
249 ptr2[j] = (v * f + 16384) >> 15;
261 scale = 1.f / s->
scale;
265 r = (
float *)p->
data[2];
266 g = (
float *)p->
data[0];
267 b = (
float *)p->
data[1];
268 for (
int i = 0; i < avctx->
height; i++) {
269 for (
int j = 0; j < avctx->
width; j++) {
283 r = (
float *)p->
data[2];
284 g = (
float *)p->
data[0];
285 b = (
float *)p->
data[1];
286 for (
int i = 0; i < avctx->
height; i++) {
287 for (
int j = 0; j < avctx->
width; j++) {
307 #if CONFIG_PGM_DECODER 319 #if CONFIG_PGMYUV_DECODER 331 #if CONFIG_PPM_DECODER 343 #if CONFIG_PBM_DECODER 355 #if CONFIG_PAM_DECODER 367 #if CONFIG_PFM_DECODER #define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
packed RGB 8:8:8, 24bpp, RGBRGB...
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
#define AV_PIX_FMT_RGBA64
int maxval
maximum value of a pixel
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
AVCodec ff_pgmyuv_decoder
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define i(width, name, range_min, range_max)
#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. ...
const char * name
Name of the codec implementation.
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
enum AVPictureType pict_type
Picture type of the frame.
#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)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
#define AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P9
static void samplecpy(uint8_t *dst, const uint8_t *src, int n, int maxval)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int pnm_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#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.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb...
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
uint8_t * bytestream_start
int key_frame
1 -> keyframe, 0-> not
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.