70 for (i = 0; i < 64; i++)
95 if (partial_bit_count > 0) {
97 re_index -= partial_bit_count;
117 if (re_index + vlc_len > last_index) {
121 re_index = last_index;
132 block[scan_table[pos]] =
level;
157 int quant,
dc, dct_mode, class1, j;
158 int mb_index, mb_x, mb_y, last_index;
159 int y_stride, linesize;
170 const int log2_blocksize = 3;
171 int is_field_mode[5];
173 assert((((
int)mb_bit_buffer) & 7) == 0);
174 assert((((
int)vs_bit_buffer) & 7) == 0);
176 memset(sblock, 0, 5*
DV_MAX_BPM*
sizeof(*sblock));
180 block1 = &sblock[0][0];
183 for (mb_index = 0; mb_index < 5; mb_index++, mb1 += s->
sys->
bpm, block1 += s->
sys->
bpm * 64) {
185 quant = buf_ptr[3] & 0x0f;
190 is_field_mode[mb_index] = 0;
191 for (j = 0; j < s->
sys->
bpm; j++) {
203 is_field_mode[mb_index] |= !j && dct_mode;
215 buf_ptr += last_index >> 3;
219 av_dlog(avctx,
"MB block: %d, %d ", mb_index, j);
238 for (j = 0; j < s->
sys->
bpm; j++, block += 64, mb++) {
254 block = &sblock[0][0];
259 for (mb_index = 0; mb_index < 5; mb_index++) {
260 for (j = 0; j < s->
sys->
bpm; j++) {
262 av_dlog(avctx,
"start %d:%d\n", mb_index, j);
265 if (mb->
pos >= 64 && mb->
pos < 127)
273 block = &sblock[0][0];
275 for (mb_index = 0; mb_index < 5; mb_index++) {
281 (s->
sys->
height >= 720 && mb_y != 134)) {
282 y_stride = (s->
frame->
linesize[0] << ((!is_field_mode[mb_index]) * log2_blocksize));
284 y_stride = (2 << log2_blocksize);
288 mb[0] .
idct_put(y_ptr , linesize, block + 0*64);
290 mb[2].
idct_put(y_ptr + (1 << log2_blocksize) , linesize, block + 2*64);
292 mb[1].
idct_put(y_ptr + (1 << log2_blocksize) , linesize, block + 1*64);
293 mb[2].
idct_put(y_ptr + y_stride, linesize, block + 2*64);
294 mb[3].
idct_put(y_ptr + (1 << log2_blocksize) + y_stride, linesize, block + 3*64);
302 for (j = 2; j; j--) {
305 uint64_t aligned_pixels[64/8];
310 for (y = 0; y < (1 << log2_blocksize); y++, c_ptr += s->
frame->
linesize[j], pixels += 8) {
311 ptr1 = pixels + (1 << (log2_blocksize - 1));
313 for (x = 0; x < (1 << (log2_blocksize - 1)); x++) {
314 c_ptr[x] = pixels[x];
320 y_stride = (mb_y == 134) ? (1 << log2_blocksize) :
321 s->
frame->
linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize);
323 (mb++)->
idct_put(c_ptr , linesize, block); block += 64;
325 (mb++)->
idct_put(c_ptr + y_stride, linesize, block); block += 64;
336 void *
data,
int *got_frame,
340 int buf_size = avpkt->
size;
343 int apt, is16_9, ret;
372 vsc_pack = buf + 80*5 + 48 + 5;
375 is16_9 = (vsc_pack && ((vsc_pack[2] & 0x07) == 0x02 || (!apt && (vsc_pack[2] & 0x07) == 0x07)));
static void av_unused put_bits32(PutBitContext *s, uint32_t value)
Write exactly 32 bits into a bitstream.
RL_VLC_ELEM ff_dv_rl_vlc[1184]
uint32_t idct_factor[2 *4 *16 *64]
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
const uint8_t * block_sizes
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.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic?ac->func_descr_generic:ac->func_descr)
const uint8_t ff_dv_quant_offset[4]
void(* idct_put)(uint8_t *dest, int line_size, int16_t *block)
static int get_sbits(GetBitContext *s, int n)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
static av_cold int dvvideo_decode_init(AVCodecContext *avctx)
void(* idct_put[2])(uint8_t *dest, int line_size, int16_t *block)
const uint8_t ff_dv_zigzag248_direct[64]
void ff_simple_idct248_put(uint8_t *dest, int line_size, int16_t *block)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
Check that the provided sample aspect ratio is valid and set it on the codec context.
bitstream reader API header.
int interlaced_frame
The content of the picture is interlaced.
enum AVPixelFormat pix_fmt
static const uint8_t frame_size[4]
static int get_bits_left(GetBitContext *gb)
DVwork_chunk work_chunks[4 *12 *27]
#define UPDATE_CACHE(name, gb)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static void bit_copy(PutBitContext *pb, GetBitContext *gb)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static int dv_work_pool_size(const AVDVProfile *d)
const AVDVProfile * av_dv_frame_profile(const AVDVProfile *sys, const uint8_t *frame, unsigned buf_size)
Get a DV profile for the provided compressed frame.
AVCodec ff_dvvideo_decoder
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
static void put_bits(PutBitContext *s, int n, unsigned int value)
Write up to 31 bits into a bitstream.
#define CLOSE_READER(name, gb)
static int put_bits_count(PutBitContext *s)
common internal API header
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
enum AVPictureType pict_type
Picture type of the frame.
#define DV_MAX_BPM
maximum number of blocks per macroblock in any DV format
#define DV_PROFILE_IS_HD(p)
uint32_t partial_bit_buffer
const uint8_t * scan_table
uint8_t idct_permutation[64]
IDCT input permutation.
#define SHOW_UBITS(name, gb, num)
void(* idct_put)(uint8_t *dest, int line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
static void idct_put(FourXContext *f, int x, int y)
static int dvvideo_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Libavcodec external API header.
const uint32_t * factor_table
static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
#define OPEN_READER(name, gb)
static unsigned int get_bits1(GetBitContext *s)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
av_cold int ff_dvvideo_init(AVCodecContext *avctx)
const uint8_t ff_zigzag_direct[64]
uint8_t partial_bit_count
static int16_t block1[64]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
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_dlog(ac->avr,"%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-> dc
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
#define CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
static av_cold int init(AVCodecParserContext *s)
int ff_dv_init_dynamic_tables(DVVideoContext *ctx, const AVDVProfile *d)
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
int top_field_first
If the content is interlaced, is top field displayed first.
static void dv_calculate_mb_xy(DVVideoContext *s, DVwork_chunk *work_chunk, int m, int *mb_x, int *mb_y)
int key_frame
1 -> keyframe, 0-> not
#define LOCAL_ALIGNED_16(t, v,...)
static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, int16_t *block)
This structure stores compressed data.
static const int dv_iweight_bits