47 bytestream2_put_byteu(pb, 0xff);
48 bytestream2_put_byteu(pb,
code);
53 bytestream2_put_byte(pb, 0xff);
54 bytestream2_put_byte(pb,
code);
67 for (k = 0; (
state->N[Q] << k) <
state->A[Q]; k++)
74 if (err >= (
state->range + 1 >> 1)) {
89 int RItype,
int err,
int limit_add)
99 for (k = 0; (
state->N[Q] << k) <
temp; k++)
102 if (!k && err && (2 *
state->B[Q] <
state->N[Q]))
106 val = -(2 * err) - 1 - RItype +
map;
108 val = 2 * err - RItype -
map;
113 state->A[Q] += (
val + 1 - RItype) >> 1;
144 void *
tmp,
const void *
in,
int last2,
int w,
148 int Ra =
R(
tmp, 0), Rb, Rc = last2, Rd;
165 int RUNval, RItype,
run;
179 pred = RItype ? Ra : Rb;
182 if (!RItype && Ra > Rb)
191 if (RItype || (Rb >= Ra))
201 if (err >=
state->range + 1 >> 1)
262 bytestream2_put_be16u(pb, 13);
263 bytestream2_put_byteu(pb, 1);
264 bytestream2_put_be16u(pb,
state->maxval);
265 bytestream2_put_be16u(pb,
state->T1);
266 bytestream2_put_be16u(pb,
state->T2);
267 bytestream2_put_be16u(pb,
state->T3);
268 bytestream2_put_be16u(pb,
state->reset);
272 const AVFrame *pict,
int *got_packet)
285 #if FF_API_PRIVATE_OPT
313 bytestream2_put_be16u(&pb, 8 + comps * 3);
315 bytestream2_put_be16u(&pb, avctx->
height);
316 bytestream2_put_be16u(&pb, avctx->
width);
317 bytestream2_put_byteu(&pb, comps);
318 for (
i = 1;
i <= comps;
i++) {
319 bytestream2_put_byteu(&pb,
i);
320 bytestream2_put_byteu(&pb, 0x11);
321 bytestream2_put_byteu(&pb, 0);
325 bytestream2_put_be16u(&pb, 6 + comps * 2);
326 bytestream2_put_byteu(&pb, comps);
327 for (
i = 1;
i <= comps;
i++) {
328 bytestream2_put_byteu(&pb,
i);
329 bytestream2_put_byteu(&pb, 0);
331 bytestream2_put_byteu(&pb,
ctx->pred);
332 bytestream2_put_byteu(&pb, (comps > 1) ? 1 : 0);
333 bytestream2_put_byteu(&pb, 0);
357 int last0 = *((uint16_t *)last);
364 int Rc[3] = { 0, 0, 0 };
368 for (j = 0; j < 3; j++) {
378 int Rc[3] = { 0, 0, 0 };
382 for (j = 2; j >= 0; j--) {
404 bytestream2_put_byte(&pb, v);
407 bytestream2_put_byte(&pb, v);
425 #if FF_API_CODED_FRAME
428 ctx->coded_frame->key_frame = 1;
437 "Only grayscale and RGB24/BGR24 images are supported\n");
443 #define OFFSET(x) offsetof(JPEGLSContext, x)
444 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static double val(void *priv, double ch)
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
const uint8_t ff_log2_run[41]
static av_always_inline void bytestream2_init_writer(PutByteContext *p, uint8_t *buf, int buf_size)
static av_always_inline int bytestream2_tell_p(PutByteContext *p)
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
bitstream reader API header.
static int get_bits_count(const GetBitContext *s)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static void set_ur_golomb_jpegls(PutBitContext *pb, int i, int k, int limit, int esc_len)
write unsigned golomb rice code (jpegls).
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
const char * av_default_item_name(void *ptr)
Return the context name.
@ AV_PICTURE_TYPE_I
Intra.
#define LIBAVUTIL_VERSION_INT
const VDPAUPixFmtMap * map
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
void ff_jpegls_init_state(JLSState *state)
Calculate initial JPEG-LS parameters.
void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all)
Calculate JPEG-LS codec values.
static int ff_jpegls_update_state_regular(JLSState *state, int Q, int err)
static void ff_jpegls_downscale_state(JLSState *state, int Q)
static int ff_jpegls_quantize(JLSState *s, int v)
Calculate quantized gradient value, used for context determination.
static void put_marker_byte(PutByteContext *pb, enum JpegMarker code)
static void ls_encode_run(JLSState *state, PutBitContext *pb, int run, int comp, int trail)
Encode run value as specified by JPEG-LS standard.
static const AVOption options[]
static void ls_store_lse(JLSState *state, PutByteContext *pb)
static const AVClass jpegls_class
static void ls_encode_runterm(JLSState *state, PutBitContext *pb, int RItype, int err, int limit_add)
Encode error from run termination.
static void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q, int err)
Encode error from regular symbol.
AVCodec ff_jpegls_encoder
static void put_marker_byteu(PutByteContext *pb, enum JpegMarker code)
static av_cold int encode_init_ls(AVCodecContext *ctx)
static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
static void ls_encode_line(JLSState *state, PutBitContext *pb, void *tmp, const void *in, int last2, int w, int stride, int comp, int bits)
Encode one line of image.
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define FF_DISABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
static enum AVPixelFormat pix_fmts[]
MJPEG encoder and decoder.
@ LSE
JPEG-LS extension parameters.
AVPixelFormat
Pixel format.
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
#define AV_PIX_FMT_GRAY16
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
static int put_bits_count(PutBitContext *s)
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
static const float pred[4]
Describe the class of an AVClass context structure.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
attribute_deprecated int prediction_method
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
This structure stores compressed data.
int flags
A combination of AV_PKT_FLAG values.