mirror of https://git.ffmpeg.org/ffmpeg.git
QDM2 compatible decoder
Originally committed as revision 4649 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Roberto Togni
parent
ea7e68b1e2
commit
d9b1c197e5
1
CREDITS
1
CREDITS
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@ -23,6 +23,7 @@ Zdenek Kabelac
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Robin Kay
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Todd Kirby
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Nick Kurshev
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Benjamin Larsson
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Loïc Le Loarer
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Mike Melanson
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Loren Merritt
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@ -851,6 +851,8 @@ other implementations.
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@tab QuickTime fourcc 'alac'
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@item FFmpeg Sonic @tab X @tab X
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@tab experimental lossy/lossless codec
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@item Qdesign QDM2 @tab @tab X
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@tab there are still some distortions
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@end multitable
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@code{X} means that encoding (resp. decoding) is supported.
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@ -18,7 +18,7 @@ OBJS= bitstream.o utils.o mem.o allcodecs.o \
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fft.o mdct.o raw.o golomb.o cabac.o\
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dpcm.o adx.o faandct.o parser.o g726.o \
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vp3dsp.o h264idct.o rangecoder.o pnm.o h263.o msmpeg4.o h263dec.o dvdsub.o dvbsub.o dvbsubdec.o\
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opt.o truemotion2.o
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opt.o qdm2.o truemotion2.o
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ifeq ($(CONFIG_AASC_DECODER),yes)
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OBJS+= aasc.o
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@ -491,6 +491,9 @@ void avcodec_register_all(void)
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#ifdef CONFIG_LIBGSM
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register_avcodec(&libgsm_decoder);
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#endif //CONFIG_LIBGSM
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#ifdef CONFIG_QDM2_DECODER
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register_avcodec(&qdm2_decoder);
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#endif //CONFIG_QDM2_DECODER
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#endif /* CONFIG_DECODERS */
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#ifdef AMR_NB
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@ -185,6 +185,7 @@ enum CodecID {
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CODEC_ID_ALAC,
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CODEC_ID_WESTWOOD_SND1,
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CODEC_ID_GSM,
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CODEC_ID_QDM2,
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CODEC_ID_OGGTHEORA= 0x16000,
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@ -2000,6 +2001,7 @@ extern AVCodec mp2_decoder;
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extern AVCodec mp3_decoder;
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extern AVCodec mp3adu_decoder;
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extern AVCodec mp3on4_decoder;
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extern AVCodec qdm2_decoder;
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extern AVCodec mace3_decoder;
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extern AVCodec mace6_decoder;
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extern AVCodec huffyuv_decoder;
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@ -28,8 +28,6 @@
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/* currently, cannot change these constants (need to modify
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quantization stage) */
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#define FRAC_BITS 15
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#define WFRAC_BITS 14
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#define MUL(a,b) (((int64_t)(a) * (int64_t)(b)) >> FRAC_BITS)
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#define FIX(a) ((int)((a) * (1 << FRAC_BITS)))
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@ -22,8 +22,42 @@
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#define SAME_HEADER_MASK \
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(0xffe00000 | (3 << 17) | (0xf << 12) | (3 << 10) | (3 << 19))
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/* define USE_HIGHPRECISION to have a bit exact (but slower) mpeg
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audio decoder */
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#ifdef USE_HIGHPRECISION
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#define FRAC_BITS 23 /* fractional bits for sb_samples and dct */
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#define WFRAC_BITS 16 /* fractional bits for window */
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#else
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#define FRAC_BITS 15 /* fractional bits for sb_samples and dct */
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#define WFRAC_BITS 14 /* fractional bits for window */
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#endif
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#if defined(USE_HIGHPRECISION) && defined(CONFIG_AUDIO_NONSHORT)
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typedef int32_t OUT_INT;
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#define OUT_MAX INT32_MAX
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#define OUT_MIN INT32_MIN
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#define OUT_SHIFT (WFRAC_BITS + FRAC_BITS - 31)
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#else
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typedef int16_t OUT_INT;
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#define OUT_MAX INT16_MAX
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#define OUT_MIN INT16_MIN
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#define OUT_SHIFT (WFRAC_BITS + FRAC_BITS - 15)
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#endif
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#if FRAC_BITS <= 15
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typedef int16_t MPA_INT;
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#else
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typedef int32_t MPA_INT;
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#endif
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int l2_select_table(int bitrate, int nb_channels, int freq, int lsf);
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int mpa_decode_header(AVCodecContext *avctx, uint32_t head);
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void ff_mpa_synth_init(MPA_INT *window);
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void ff_mpa_synth_filter(MPA_INT *synth_buf_ptr, int *synth_buf_offset,
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MPA_INT *window, int *dither_state,
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OUT_INT *samples, int incr,
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int32_t sb_samples[SBLIMIT]);
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extern const uint16_t mpa_bitrate_tab[2][3][15];
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extern const uint16_t mpa_freq_tab[3];
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@ -25,7 +25,6 @@
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//#define DEBUG
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#include "avcodec.h"
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#include "bitstream.h"
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#include "mpegaudio.h"
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#include "dsputil.h"
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/*
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@ -40,25 +39,7 @@
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#define USE_HIGHPRECISION
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#endif
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#ifdef USE_HIGHPRECISION
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#define FRAC_BITS 23 /* fractional bits for sb_samples and dct */
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#define WFRAC_BITS 16 /* fractional bits for window */
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#else
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#define FRAC_BITS 15 /* fractional bits for sb_samples and dct */
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#define WFRAC_BITS 14 /* fractional bits for window */
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#endif
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#if defined(USE_HIGHPRECISION) && defined(CONFIG_AUDIO_NONSHORT)
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typedef int32_t OUT_INT;
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#define OUT_MAX INT32_MAX
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#define OUT_MIN INT32_MIN
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#define OUT_SHIFT (WFRAC_BITS + FRAC_BITS - 31)
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#else
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typedef int16_t OUT_INT;
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#define OUT_MAX INT16_MAX
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#define OUT_MIN INT16_MIN
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#define OUT_SHIFT (WFRAC_BITS + FRAC_BITS - 15)
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#endif
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#include "mpegaudio.h"
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#define FRAC_ONE (1 << FRAC_BITS)
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@ -75,12 +56,6 @@ static always_inline int MULH(int a, int b){
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return ((int64_t)(a) * (int64_t)(b))>>32;
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}
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#if FRAC_BITS <= 15
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typedef int16_t MPA_INT;
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#else
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typedef int32_t MPA_INT;
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#endif
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/****************/
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#define HEADER_SIZE 4
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@ -145,6 +145,7 @@ static const CodecTag mov_audio_tags[] = {
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{ CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
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{ CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
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{ CODEC_ID_ALAC,MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
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{ CODEC_ID_QDM2,MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
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{ CODEC_ID_NONE, 0 },
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};
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@ -709,6 +710,27 @@ static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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return 0;
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}
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static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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if((uint64_t)atom.size > (1<<30))
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return -1;
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// pass all frma atom to codec, needed at least for QDM2
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av_free(st->codec->extradata);
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st->codec->extradata_size = atom.size;
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st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
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if (st->codec->extradata) {
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get_buffer(pb, st->codec->extradata, atom.size);
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//av_log(NULL, AV_LOG_DEBUG, "Reading frma %Ld %s\n", atom.size, (char*)st->codec->extradata);
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} else
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url_fskip(pb, atom.size);
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return 0;
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}
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static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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@ -1605,7 +1627,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
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{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
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{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_leaf },
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{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
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{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
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{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
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/* extra mp4 */
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{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
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/* QT atoms */
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