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Tue, 01 Sep 2020 04:30:47 -0700 (PDT) Received: from localhost.localdomain ([31.45.254.223]) by smtp.gmail.com with ESMTPSA id b1sm351791eja.124.2020.09.01.04.30.46 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2020 04:30:46 -0700 (PDT) From: Paul B Mahol To: ffmpeg-devel@ffmpeg.org Date: Tue, 1 Sep 2020 13:29:42 +0200 Message-Id: <20200901112946.3992-1-onemda@gmail.com> X-Mailer: git-send-email 2.17.1 Subject: [FFmpeg-devel] [PATCH 1/5] avcodec: add ADPCM IMA MOFLEX decoder X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Paul B Mahol --- libavcodec/Makefile | 1 + libavcodec/adpcm.c | 26 ++++++++++++++++++++++++++ libavcodec/allcodecs.c | 1 + libavcodec/codec_desc.c | 7 +++++++ libavcodec/codec_id.h | 1 + libavcodec/utils.c | 2 ++ 6 files changed, 38 insertions(+) diff --git a/libavcodec/Makefile b/libavcodec/Makefile index ca2e8a2530..191c4e0a7c 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -866,6 +866,7 @@ OBJS-$(CONFIG_ADPCM_IMA_DK4_DECODER) += adpcm.o adpcm_data.o OBJS-$(CONFIG_ADPCM_IMA_EA_EACS_DECODER) += adpcm.o adpcm_data.o OBJS-$(CONFIG_ADPCM_IMA_EA_SEAD_DECODER) += adpcm.o adpcm_data.o OBJS-$(CONFIG_ADPCM_IMA_ISS_DECODER) += adpcm.o adpcm_data.o +OBJS-$(CONFIG_ADPCM_IMA_MOFLEX_DECODER) += adpcm.o adpcm_data.o OBJS-$(CONFIG_ADPCM_IMA_MTF_DECODER) += adpcm.o adpcm_data.o OBJS-$(CONFIG_ADPCM_IMA_OKI_DECODER) += adpcm.o adpcm_data.o OBJS-$(CONFIG_ADPCM_IMA_QT_DECODER) += adpcm.o adpcm_data.o diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index 1366932352..71e37efde7 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -210,6 +210,7 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx) case AV_CODEC_ID_ADPCM_PSX: case AV_CODEC_ID_ADPCM_MTAF: case AV_CODEC_ID_ADPCM_ARGO: + case AV_CODEC_ID_ADPCM_IMA_MOFLEX: avctx->sample_fmt = AV_SAMPLE_FMT_S16P; break; case AV_CODEC_ID_ADPCM_IMA_WS: @@ -774,6 +775,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb, case AV_CODEC_ID_ADPCM_4XM: case AV_CODEC_ID_ADPCM_AGM: case AV_CODEC_ID_ADPCM_IMA_DAT4: + case AV_CODEC_ID_ADPCM_IMA_MOFLEX: case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break; case AV_CODEC_ID_ADPCM_IMA_AMV: header_size = 8; break; case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4 * ch; break; @@ -1298,6 +1300,29 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data, *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3); } break; + case AV_CODEC_ID_ADPCM_IMA_MOFLEX: + for (channel = 0; channel < avctx->channels; channel++) { + cs = &c->status[channel]; + cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16); + cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16); + if (cs->step_index > 88u){ + av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n", + channel, cs->step_index); + return AVERROR_INVALIDDATA; + } + } + + for (int subframe = 0; subframe < nb_samples / 256; subframe++) { + for (channel = 0; channel < avctx->channels; channel++) { + samples = samples_p[channel] + 256 * subframe; + for (n = 0; n < 256; n += 2) { + int v = bytestream2_get_byteu(&gb); + *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3); + *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3); + } + } + } + break; case AV_CODEC_ID_ADPCM_IMA_DAT4: for (channel = 0; channel < avctx->channels; channel++) { cs = &c->status[channel]; @@ -2107,6 +2132,7 @@ ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS"); +ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_MOFLEX, sample_fmts_s16p, adpcm_ima_moflex, "ADPCM IMA MobiClip MOFLEX"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_MTF, sample_fmts_s16, adpcm_ima_mtf, "ADPCM IMA Capcom's MT Framework"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_OKI, sample_fmts_s16, adpcm_ima_oki, "ADPCM IMA Dialogic OKI"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime"); diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 729d2fd9ad..084a289c9e 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -619,6 +619,7 @@ extern AVCodec ff_adpcm_ima_dk4_decoder; extern AVCodec ff_adpcm_ima_ea_eacs_decoder; extern AVCodec ff_adpcm_ima_ea_sead_decoder; extern AVCodec ff_adpcm_ima_iss_decoder; +extern AVCodec ff_adpcm_ima_moflex_decoder; extern AVCodec ff_adpcm_ima_mtf_decoder; extern AVCodec ff_adpcm_ima_oki_decoder; extern AVCodec ff_adpcm_ima_qt_encoder; diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c index 0ae6aee63b..b5bc5c3c71 100644 --- a/libavcodec/codec_desc.c +++ b/libavcodec/codec_desc.c @@ -2376,6 +2376,13 @@ static const AVCodecDescriptor codec_descriptors[] = { .long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA Cunning Developments"), .props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY, }, + { + .id = AV_CODEC_ID_ADPCM_IMA_MOFLEX, + .type = AVMEDIA_TYPE_AUDIO, + .name = "adpcm_ima_moflex", + .long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA MobiClip MOFLEX"), + .props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY, + }, /* AMR */ { diff --git a/libavcodec/codec_id.h b/libavcodec/codec_id.h index 896ecb0ce0..aac1174f28 100644 --- a/libavcodec/codec_id.h +++ b/libavcodec/codec_id.h @@ -388,6 +388,7 @@ enum AVCodecID { AV_CODEC_ID_ADPCM_IMA_ALP, AV_CODEC_ID_ADPCM_IMA_MTF, AV_CODEC_ID_ADPCM_IMA_CUNNING, + AV_CODEC_ID_ADPCM_IMA_MOFLEX, /* AMR */ AV_CODEC_ID_AMR_NB = 0x12000, diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 14cb5cf1aa..187ce230b8 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -1664,6 +1664,8 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba, if (ch > 0 && ch < INT_MAX/16) { /* calc from frame_bytes and channels */ switch (id) { + case AV_CODEC_ID_ADPCM_IMA_MOFLEX: + return (frame_bytes - 4 * ch) / (128 * ch) * 256; case AV_CODEC_ID_ADPCM_AFC: return frame_bytes / (9 * ch) * 16; case AV_CODEC_ID_ADPCM_PSX: