39 #define BITSTREAM_READER_LE
43 #define SMKTREE_BITS 9
44 #define SMK_NODE 0x80000000
80 1, 2, 3, 4, 5, 6, 7, 8,
81 9, 10, 11, 12, 13, 14, 15, 16,
82 17, 18, 19, 20, 21, 22, 23, 24,
83 25, 26, 27, 28, 29, 30, 31, 32,
84 33, 34, 35, 36, 37, 38, 39, 40,
85 41, 42, 43, 44, 45, 46, 47, 48,
86 49, 50, 51, 52, 53, 54, 55, 56,
87 57, 58, 59, 128, 256, 512, 1024, 2048 };
148 if (i1 < 0 || i2 < 0)
154 }
else if(val == ctx->
escapes[1]) {
157 }
else if(val == ctx->
escapes[2]) {
188 VLC vlc[2] = { { 0 } };
193 if(size >= UINT_MAX>>4){
226 tmp1.
lengths,
sizeof(
int),
sizeof(
int),
247 tmp2.
lengths,
sizeof(
int),
sizeof(
int),
264 last[0] = last[1] = last[2] = -1;
275 huff.
length = ((size + 3) >> 2) + 4;
316 int mmap_size, mclr_size, full_size, type_size, ret;
380 recode[last[0]] = recode[last[1]] = recode[last[2]] = 0;
385 register int *
table = recode;
390 table += (*table) & (~SMK_NODE);
395 if(v != recode[last[0]]) {
396 recode[last[2]] = recode[last[1]];
397 recode[last[1]] = recode[last[0]];
411 int blocks,
blk, bw, bh;
416 if (avpkt->
size <= 769)
423 pal = (uint32_t*)smk->
pic->
data[1];
425 flags = bytestream2_get_byteu(&gb2);
433 for(i = 0; i < 256; i++)
434 *pal++ = 0xFFU << 24 | bytestream2_get_be24u(&gb2);
444 bw = avctx->
width >> 2;
448 while(blk < blocks) {
456 while(run-- && blk < blocks){
461 out = smk->
pic->
data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
464 for(i = 0; i < 4; i++) {
465 if(map & 1) out[0] = hi;
else out[0] = lo;
466 if(map & 2) out[1] = hi;
else out[1] = lo;
467 if(map & 4) out[2] = hi;
else out[2] = lo;
468 if(map & 8) out[3] = hi;
else out[3] = lo;
481 while(run-- && blk < blocks){
482 out = smk->
pic->
data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
485 for(i = 0; i < 4; i++) {
495 out[0] = out[1] = pix & 0xFF;
496 out[2] = out[3] = pix >> 8;
498 out[0] = out[1] = pix & 0xFF;
499 out[2] = out[3] = pix >> 8;
502 out[0] = out[1] = pix & 0xFF;
503 out[2] = out[3] = pix >> 8;
505 out[0] = out[1] = pix & 0xFF;
506 out[2] = out[3] = pix >> 8;
509 for(i = 0; i < 2; i++) {
526 while(run-- && blk < blocks)
531 while(run-- && blk < blocks){
533 out = smk->
pic->
data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
534 col = mode * 0x01010101;
535 for(i = 0; i < 4; i++) {
536 *((uint32_t*)out) = col;
628 int *got_frame_ptr,
AVPacket *avpkt)
632 int buf_size = avpkt->
size;
635 VLC vlc[4] = { { 0 } };
642 int pred[2] = {0, 0};
651 if (unp_size > (1
U<<24)) {
666 if (stereo ^ (avctx->
channels != 1)) {
677 if (unp_size % (avctx->
channels * (bits + 1))) {
683 samples = (int16_t *)frame->
data[0];
684 samples8 = frame->
data[0];
687 for(i = 0; i < (1 << (bits + stereo)); i++) {
694 if (!h[i].bits || !h[i].lengths || !h[i].values) {
704 if(h[i].current > 1) {
706 h[i].lengths,
sizeof(
int),
sizeof(
int),
707 h[i].bits,
sizeof(uint32_t),
sizeof(uint32_t),
INIT_VLC_LE);
717 for(i = stereo; i >= 0; i--)
719 for(i = 0; i <= stereo; i++)
720 *samples++ = pred[i];
721 for(; i < unp_size / 2; i++) {
742 val |= h[3].
values[res] << 8;
744 *samples++ = pred[1];
763 val |= h[1].
values[res] << 8;
765 *samples++ = pred[0];
769 for(i = stereo; i >= 0; i--)
771 for(i = 0; i <= stereo; i++)
772 *samples8++ = pred[i];
773 for(; i < unp_size; i++) {
786 *samples8++ = pred[1];
797 *samples8++ = pred[0];
806 for(i = 0; i < 4; i++) {
static int smacker_decode_bigtree(GetBitContext *gb, HuffContext *hc, DBCtx *ctx, int length)
Decode header tree.
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
const char const char void * val
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static const int block_runs[64]
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static av_cold int init(AVCodecContext *avctx)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
#define AV_CH_LAYOUT_STEREO
static av_cold int decode_init(AVCodecContext *avctx)
enum AVSampleFormat sample_fmt
audio sample format
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bit with AV_PIX_FMT_RGB32 palette
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
static av_cold int smka_decode_init(AVCodecContext *avctx)
bitstream reader API header.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
static int get_bits_left(GetBitContext *gb)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVCodec ff_smacker_decoder
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
static const struct endianess table[]
static int smacker_decode_tree(GetBitContext *gb, HuffContext *hc, uint32_t prefix, int length)
Decode local frame tree.
#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.
Libavcodec external API header.
uint64_t channel_layout
Audio channel layout.
static int smka_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Decode Smacker audio data.
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
audio channel layout utility functions
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
Context used for code reconstructing.
static av_cold int decode_end(AVCodecContext *avctx)
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int **recodes, int *last, int size)
Store large tree as FFmpeg's vlc codes.
static const float pred[4]
#define AV_LOG_INFO
Standard information.
AVCodec ff_smackaud_decoder
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
static unsigned int get_bits1(GetBitContext *s)
static void skip_bits1(GetBitContext *s)
int palette_has_changed
Tell user application that palette has changed from previous frame.
static av_const int sign_extend(int val, unsigned bits)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
static av_always_inline int smk_get_code(GetBitContext *gb, int *recode, int *last)
int channels
number of audio channels
VLC_TYPE(* table)[2]
code, bits
int key_frame
1 -> keyframe, 0-> not
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
static void * av_mallocz_array(size_t nmemb, size_t size)
static int decode_header_trees(SmackVContext *smk)
static av_always_inline void last_reset(int *recode, int *last)
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
This structure stores compressed data.
void ff_free_vlc(VLC *vlc)
int nb_samples
number of audio samples (per channel) described by this frame
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.