/* * utils for libavcodec * Copyright (c) 2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * utils. */ #include "config.h" #include "libavutil/avassert.h" #include "libavutil/channel_layout.h" #include "libavutil/intreadwrite.h" #include "libavutil/mem.h" #include "libavutil/pixdesc.h" #include "libavutil/imgutils.h" #include "libavutil/pixfmt.h" #include "avcodec.h" #include "codec.h" #include "codec_desc.h" #include "codec_internal.h" #include "codec_par.h" #include "decode.h" #include "hwconfig.h" #include "refstruct.h" #include "thread.h" #include "threadframe.h" #include "internal.h" #include "put_bits.h" #include "startcode.h" #include #include void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size) { uint8_t **p = ptr; if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) { av_freep(p); *size = 0; return; } av_fast_mallocz(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE); if (*p) memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); } void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size) { uint8_t **p = ptr; if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) { av_freep(p); *size = 0; return; } av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE); if (*p) memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE); } int av_codec_is_encoder(const AVCodec *avcodec) { const FFCodec *const codec = ffcodec(avcodec); return codec && (codec->cb_type == FF_CODEC_CB_TYPE_ENCODE || codec->cb_type == FF_CODEC_CB_TYPE_ENCODE_SUB || codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_PACKET); } int av_codec_is_decoder(const AVCodec *avcodec) { const FFCodec *const codec = ffcodec(avcodec); return codec && (codec->cb_type == FF_CODEC_CB_TYPE_DECODE || codec->cb_type == FF_CODEC_CB_TYPE_DECODE_SUB || codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_FRAME); } int ff_set_dimensions(AVCodecContext *s, int width, int height) { int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s); if (ret < 0) width = height = 0; s->coded_width = width; s->coded_height = height; s->width = AV_CEIL_RSHIFT(width, s->lowres); s->height = AV_CEIL_RSHIFT(height, s->lowres); return ret; } int ff_set_sar(AVCodecContext *avctx, AVRational sar) { int ret = av_image_check_sar(avctx->width, avctx->height, sar); if (ret < 0) { av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n", sar.num, sar.den); avctx->sample_aspect_ratio = (AVRational){ 0, 1 }; return ret; } else { avctx->sample_aspect_ratio = sar; } return 0; } int ff_side_data_update_matrix_encoding(AVFrame *frame, enum AVMatrixEncoding matrix_encoding) { AVFrameSideData *side_data; enum AVMatrixEncoding *data; side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING); if (!side_data) side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING, sizeof(enum AVMatrixEncoding)); if (!side_data) return AVERROR(ENOMEM); data = (enum AVMatrixEncoding*)side_data->data; *data = matrix_encoding; return 0; } void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS]) { int i; int w_align = 1; int h_align = 1; AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt); if (desc) { w_align = 1 << desc->log2_chroma_w; h_align = 1 << desc->log2_chroma_h; } switch (s->pix_fmt) { case AV_PIX_FMT_YUV420P: case AV_PIX_FMT_YUYV422: case AV_PIX_FMT_YVYU422: case AV_PIX_FMT_UYVY422: case AV_PIX_FMT_YUV422P: case AV_PIX_FMT_YUV440P: case AV_PIX_FMT_YUV444P: case AV_PIX_FMT_GBRP: case AV_PIX_FMT_GBRAP: case AV_PIX_FMT_GRAY8: case AV_PIX_FMT_GRAY16BE: case AV_PIX_FMT_GRAY16LE: case AV_PIX_FMT_YUVJ420P: case AV_PIX_FMT_YUVJ422P: case AV_PIX_FMT_YUVJ440P: case AV_PIX_FMT_YUVJ444P: case AV_PIX_FMT_YUVA420P: case AV_PIX_FMT_YUVA422P: case AV_PIX_FMT_YUVA444P: case AV_PIX_FMT_YUV420P9LE: case AV_PIX_FMT_YUV420P9BE: case AV_PIX_FMT_YUV420P10LE: case AV_PIX_FMT_YUV420P10BE: case AV_PIX_FMT_YUV420P12LE: case AV_PIX_FMT_YUV420P12BE: case AV_PIX_FMT_YUV420P14LE: case AV_PIX_FMT_YUV420P14BE: case AV_PIX_FMT_YUV420P16LE: case AV_PIX_FMT_YUV420P16BE: case AV_PIX_FMT_YUVA420P9LE: case AV_PIX_FMT_YUVA420P9BE: case AV_PIX_FMT_YUVA420P10LE: case AV_PIX_FMT_YUVA420P10BE: case AV_PIX_FMT_YUVA420P16LE: case AV_PIX_FMT_YUVA420P16BE: case AV_PIX_FMT_YUV422P9LE: case AV_PIX_FMT_YUV422P9BE: case AV_PIX_FMT_YUV422P10LE: case AV_PIX_FMT_YUV422P10BE: case AV_PIX_FMT_YUV422P12LE: case AV_PIX_FMT_YUV422P12BE: case AV_PIX_FMT_YUV422P14LE: case AV_PIX_FMT_YUV422P14BE: case AV_PIX_FMT_YUV422P16LE: case AV_PIX_FMT_YUV422P16BE: case AV_PIX_FMT_YUVA422P9LE: case AV_PIX_FMT_YUVA422P9BE: case AV_PIX_FMT_YUVA422P10LE: case AV_PIX_FMT_YUVA422P10BE: case AV_PIX_FMT_YUVA422P12LE: case AV_PIX_FMT_YUVA422P12BE: case AV_PIX_FMT_YUVA422P16LE: case AV_PIX_FMT_YUVA422P16BE: case AV_PIX_FMT_YUV440P10LE: case AV_PIX_FMT_YUV440P10BE: case AV_PIX_FMT_YUV440P12LE: case AV_PIX_FMT_YUV440P12BE: case AV_PIX_FMT_YUV444P9LE: case AV_PIX_FMT_YUV444P9BE: case AV_PIX_FMT_YUV444P10LE: case AV_PIX_FMT_YUV444P10BE: case AV_PIX_FMT_YUV444P12LE: case AV_PIX_FMT_YUV444P12BE: case AV_PIX_FMT_YUV444P14LE: case AV_PIX_FMT_YUV444P14BE: case AV_PIX_FMT_YUV444P16LE: case AV_PIX_FMT_YUV444P16BE: case AV_PIX_FMT_YUVA444P9LE: case AV_PIX_FMT_YUVA444P9BE: case AV_PIX_FMT_YUVA444P10LE: case AV_PIX_FMT_YUVA444P10BE: case AV_PIX_FMT_YUVA444P12LE: case AV_PIX_FMT_YUVA444P12BE: case AV_PIX_FMT_YUVA444P16LE: case AV_PIX_FMT_YUVA444P16BE: case AV_PIX_FMT_GBRP9LE: case AV_PIX_FMT_GBRP9BE: case AV_PIX_FMT_GBRP10LE: case AV_PIX_FMT_GBRP10BE: case AV_PIX_FMT_GBRP12LE: case AV_PIX_FMT_GBRP12BE: case AV_PIX_FMT_GBRP14LE: case AV_PIX_FMT_GBRP14BE: case AV_PIX_FMT_GBRP16LE: case AV_PIX_FMT_GBRP16BE: case AV_PIX_FMT_GBRAP12LE: case AV_PIX_FMT_GBRAP12BE: case AV_PIX_FMT_GBRAP16LE: case AV_PIX_FMT_GBRAP16BE: w_align = 16; //FIXME assume 16 pixel per macroblock h_align = 16 * 2; // interlaced needs 2 macroblocks height if (s->codec_id == AV_CODEC_ID_BINKVIDEO) w_align = 16*2; break; case AV_PIX_FMT_YUV411P: case AV_PIX_FMT_YUVJ411P: case AV_PIX_FMT_UYYVYY411: w_align = 32; h_align = 16 * 2; break; case AV_PIX_FMT_YUV410P: if (s->codec_id == AV_CODEC_ID_SVQ1) { w_align = 64; h_align = 64; } break; case AV_PIX_FMT_RGB555: if (s->codec_id == AV_CODEC_ID_RPZA) { w_align = 4; h_align = 4; } if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) { w_align = 8; h_align = 8; } break; case AV_PIX_FMT_PAL8: case AV_PIX_FMT_BGR8: case AV_PIX_FMT_RGB8: if (s->codec_id == AV_CODEC_ID_SMC || s->codec_id == AV_CODEC_ID_CINEPAK) { w_align = 4; h_align = 4; } if (s->codec_id == AV_CODEC_ID_JV || s->codec_id == AV_CODEC_ID_ARGO || s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) { w_align = 8; h_align = 8; } if (s->codec_id == AV_CODEC_ID_MJPEG || s->codec_id == AV_CODEC_ID_MJPEGB || s->codec_id == AV_CODEC_ID_LJPEG || s->codec_id == AV_CODEC_ID_SMVJPEG || s->codec_id == AV_CODEC_ID_AMV || s->codec_id == AV_CODEC_ID_SP5X || s->codec_id == AV_CODEC_ID_JPEGLS) { w_align = 8; h_align = 2*8; } break; case AV_PIX_FMT_BGR24: if ((s->codec_id == AV_CODEC_ID_MSZH) || (s->codec_id == AV_CODEC_ID_ZLIB)) { w_align = 4; h_align = 4; } break; case AV_PIX_FMT_RGB24: if (s->codec_id == AV_CODEC_ID_CINEPAK) { w_align = 4; h_align = 4; } break; case AV_PIX_FMT_BGR0: if (s->codec_id == AV_CODEC_ID_ARGO) { w_align = 8; h_align = 8; } break; default: break; } if (s->codec_id == AV_CODEC_ID_IFF_ILBM) { w_align = FFMAX(w_align, 16); } *width = FFALIGN(*width, w_align); *height = FFALIGN(*height, h_align); if (s->codec_id == AV_CODEC_ID_H264 || s->lowres || s->codec_id == AV_CODEC_ID_VC1 || s->codec_id == AV_CODEC_ID_WMV3 || s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 || s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A ) { // some of the optimized chroma MC reads one line too much // which is also done in mpeg decoders with lowres > 0 *height += 2; // H.264 uses edge emulation for out of frame motion vectors, for this // it requires a temporary area large enough to hold a 21x21 block, // increasing witdth ensure that the temporary area is large enough, // the next rounded up width is 32 *width = FFMAX(*width, 32); } if (s->codec_id == AV_CODEC_ID_SVQ3) { *width = FFMAX(*width, 32); } for (i = 0; i < 4; i++) linesize_align[i] = STRIDE_ALIGN; } void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt); int chroma_shift = desc->log2_chroma_w; int linesize_align[AV_NUM_DATA_POINTERS]; int align; avcodec_align_dimensions2(s, width, height, linesize_align); align = FFMAX(linesize_align[0], linesize_align[3]); linesize_align[1] <<= chroma_shift; linesize_align[2] <<= chroma_shift; align = FFMAX3(align, linesize_align[1], linesize_align[2]); *width = FFALIGN(*width, align); } int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align) { int ch, planar, needed_size, ret = 0; needed_size = av_samples_get_buffer_size(NULL, nb_channels, frame->nb_samples, sample_fmt, align); if (buf_size < needed_size) return AVERROR(EINVAL); planar = av_sample_fmt_is_planar(sample_fmt); if (planar && nb_channels > AV_NUM_DATA_POINTERS) { if (!FF_ALLOCZ_TYPED_ARRAY(frame->extended_data, nb_channels)) return AVERROR(ENOMEM); } else { frame->extended_data = frame->data; } if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0], (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples, sample_fmt, align)) < 0) { if (frame->extended_data != frame->data) av_freep(&frame->extended_data); return ret; } if (frame->extended_data != frame->data) { for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++) frame->data[ch] = frame->extended_data[ch]; } return ret; } int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){ return !!(ffcodec(codec)->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM); } const char *avcodec_get_name(enum AVCodecID id) { const AVCodecDescriptor *cd; const AVCodec *codec; if (id == AV_CODEC_ID_NONE) return "none"; cd = avcodec_descriptor_get(id); if (cd) return cd->name; av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id); codec = avcodec_find_decoder(id); if (codec) return codec->name; codec = avcodec_find_encoder(id); if (codec) return codec->name; return "unknown_codec"; } const char *av_get_profile_name(const AVCodec *codec, int profile) { const AVProfile *p; if (profile == AV_PROFILE_UNKNOWN || !codec->profiles) return NULL; for (p = codec->profiles; p->profile != AV_PROFILE_UNKNOWN; p++) if (p->profile == profile) return p->name; return NULL; } const char *avcodec_profile_name(enum AVCodecID codec_id, int profile) { const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id); const AVProfile *p; if (profile == AV_PROFILE_UNKNOWN || !desc || !desc->profiles) return NULL; for (p = desc->profiles; p->profile != AV_PROFILE_UNKNOWN; p++) if (p->profile == profile) return p->name; return NULL; } int av_get_exact_bits_per_sample(enum AVCodecID codec_id) { switch (codec_id) { case AV_CODEC_ID_DFPWM: return 1; case AV_CODEC_ID_8SVX_EXP: case AV_CODEC_ID_8SVX_FIB: case AV_CODEC_ID_ADPCM_ARGO: case AV_CODEC_ID_ADPCM_CT: case AV_CODEC_ID_ADPCM_IMA_ALP: case AV_CODEC_ID_ADPCM_IMA_AMV: case AV_CODEC_ID_ADPCM_IMA_APC: case AV_CODEC_ID_ADPCM_IMA_APM: case AV_CODEC_ID_ADPCM_IMA_EA_SEAD: case AV_CODEC_ID_ADPCM_IMA_OKI: case AV_CODEC_ID_ADPCM_IMA_WS: case AV_CODEC_ID_ADPCM_IMA_SSI: case AV_CODEC_ID_ADPCM_G722: case AV_CODEC_ID_ADPCM_YAMAHA: case AV_CODEC_ID_ADPCM_AICA: return 4; case AV_CODEC_ID_DSD_LSBF: case AV_CODEC_ID_DSD_MSBF: case AV_CODEC_ID_DSD_LSBF_PLANAR: case AV_CODEC_ID_DSD_MSBF_PLANAR: case AV_CODEC_ID_PCM_ALAW: case AV_CODEC_ID_PCM_MULAW: case AV_CODEC_ID_PCM_VIDC: case AV_CODEC_ID_PCM_S8: case AV_CODEC_ID_PCM_S8_PLANAR: case AV_CODEC_ID_PCM_SGA: case AV_CODEC_ID_PCM_U8: case AV_CODEC_ID_SDX2_DPCM: case AV_CODEC_ID_CBD2_DPCM: case AV_CODEC_ID_DERF_DPCM: case AV_CODEC_ID_WADY_DPCM: return 8; case AV_CODEC_ID_PCM_S16BE: case AV_CODEC_ID_PCM_S16BE_PLANAR: case AV_CODEC_ID_PCM_S16LE: case AV_CODEC_ID_PCM_S16LE_PLANAR: case AV_CODEC_ID_PCM_U16BE: case AV_CODEC_ID_PCM_U16LE: return 16; case AV_CODEC_ID_PCM_S24DAUD: case AV_CODEC_ID_PCM_S24BE: case AV_CODEC_ID_PCM_S24LE: case AV_CODEC_ID_PCM_S24LE_PLANAR: case AV_CODEC_ID_PCM_U24BE: case AV_CODEC_ID_PCM_U24LE: return 24; case AV_CODEC_ID_PCM_S32BE: case AV_CODEC_ID_PCM_S32LE: case AV_CODEC_ID_PCM_S32LE_PLANAR: case AV_CODEC_ID_PCM_U32BE: case AV_CODEC_ID_PCM_U32LE: case AV_CODEC_ID_PCM_F32BE: case AV_CODEC_ID_PCM_F32LE: case AV_CODEC_ID_PCM_F24LE: case AV_CODEC_ID_PCM_F16LE: return 32; case AV_CODEC_ID_PCM_F64BE: case AV_CODEC_ID_PCM_F64LE: case AV_CODEC_ID_PCM_S64BE: case AV_CODEC_ID_PCM_S64LE: return 64; default: return 0; } } enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be) { static const enum AVCodecID map[][2] = { [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 }, [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE }, [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE }, [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE }, [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE }, [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 }, [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE }, [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE }, [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE }, [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE }, [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE }, }; if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map)) return AV_CODEC_ID_NONE; if (be < 0 || be > 1) be = AV_NE(1, 0); return map[fmt][be]; } int av_get_bits_per_sample(enum AVCodecID codec_id) { switch (codec_id) { case AV_CODEC_ID_DFPWM: return 1; case AV_CODEC_ID_ADPCM_SBPRO_2: return 2; case AV_CODEC_ID_ADPCM_SBPRO_3: return 3; case AV_CODEC_ID_ADPCM_SBPRO_4: case AV_CODEC_ID_ADPCM_IMA_WAV: case AV_CODEC_ID_ADPCM_IMA_QT: case AV_CODEC_ID_ADPCM_SWF: case AV_CODEC_ID_ADPCM_MS: return 4; default: return av_get_exact_bits_per_sample(codec_id); } } static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba, uint32_t tag, int bits_per_coded_sample, int64_t bitrate, uint8_t * extradata, int frame_size, int frame_bytes) { int bps = av_get_exact_bits_per_sample(id); int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1; /* codecs with an exact constant bits per sample */ if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768) return (frame_bytes * 8LL) / (bps * ch); bps = bits_per_coded_sample; /* codecs with a fixed packet duration */ switch (id) { case AV_CODEC_ID_ADPCM_ADX: return 32; case AV_CODEC_ID_ADPCM_IMA_QT: return 64; case AV_CODEC_ID_ADPCM_EA_XAS: return 128; case AV_CODEC_ID_AMR_NB: case AV_CODEC_ID_EVRC: case AV_CODEC_ID_GSM: case AV_CODEC_ID_QCELP: case AV_CODEC_ID_RA_288: return 160; case AV_CODEC_ID_AMR_WB: case AV_CODEC_ID_GSM_MS: return 320; case AV_CODEC_ID_MP1: return 384; case AV_CODEC_ID_ATRAC1: return 512; case AV_CODEC_ID_ATRAC9: case AV_CODEC_ID_ATRAC3: if (framecount > INT_MAX/1024) return 0; return 1024 * framecount; case AV_CODEC_ID_ATRAC3P: return 2048; case AV_CODEC_ID_MP2: case AV_CODEC_ID_MUSEPACK7: return 1152; case AV_CODEC_ID_AC3: return 1536; case AV_CODEC_ID_FTR: return 1024; } if (sr > 0) { /* calc from sample rate */ if (id == AV_CODEC_ID_TTA) return 256ll * sr / 245; else if (id == AV_CODEC_ID_DST) return 588ll * sr / 44100; else if (id == AV_CODEC_ID_BINKAUDIO_DCT) { if (sr / 22050 > 22) return 0; return (480 << (sr / 22050)); } if (id == AV_CODEC_ID_MP3) return sr <= 24000 ? 576 : 1152; } if (ba > 0) { /* calc from block_align */ if (id == AV_CODEC_ID_SIPR) { switch (ba) { case 20: return 160; case 19: return 144; case 29: return 288; case 37: return 480; } } else if (id == AV_CODEC_ID_ILBC) { switch (ba) { case 38: return 160; case 50: return 240; } } } if (frame_bytes > 0) { /* calc from frame_bytes only */ if (id == AV_CODEC_ID_TRUESPEECH) return 240 * (frame_bytes / 32); if (id == AV_CODEC_ID_NELLYMOSER) return 256 * (frame_bytes / 64); if (id == AV_CODEC_ID_RA_144) return 160 * (frame_bytes / 20); if (id == AV_CODEC_ID_APTX) return 4 * (frame_bytes / 4); if (id == AV_CODEC_ID_APTX_HD) return 4 * (frame_bytes / 6); if (bps > 0) { /* calc from frame_bytes and bits_per_coded_sample */ if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE) return frame_bytes * 8 / bps; } if (ch > 0 && ch < INT_MAX/16) { /* calc from frame_bytes and channels */ switch (id) { case AV_CODEC_ID_FASTAUDIO: return frame_bytes / (40 * ch) * 256; 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: case AV_CODEC_ID_ADPCM_DTK: frame_bytes /= 16 * ch; if (frame_bytes > INT_MAX / 28) return 0; return frame_bytes * 28; case AV_CODEC_ID_ADPCM_4XM: case AV_CODEC_ID_ADPCM_IMA_ACORN: case AV_CODEC_ID_ADPCM_IMA_DAT4: case AV_CODEC_ID_ADPCM_IMA_ISS: return (frame_bytes - 4 * ch) * 2 / ch; case AV_CODEC_ID_ADPCM_IMA_SMJPEG: return (frame_bytes - 4) * 2 / ch; case AV_CODEC_ID_ADPCM_IMA_AMV: return (frame_bytes - 8) * 2; case AV_CODEC_ID_ADPCM_THP: case AV_CODEC_ID_ADPCM_THP_LE: if (extradata) return frame_bytes * 14LL / (8 * ch); break; case AV_CODEC_ID_ADPCM_XA: return (frame_bytes / 128) * 224 / ch; case AV_CODEC_ID_INTERPLAY_DPCM: return (frame_bytes - 6 - ch) / ch; case AV_CODEC_ID_ROQ_DPCM: return (frame_bytes - 8) / ch; case AV_CODEC_ID_XAN_DPCM: return (frame_bytes - 2 * ch) / ch; case AV_CODEC_ID_MACE3: return 3 * frame_bytes / ch; case AV_CODEC_ID_MACE6: return 6 * frame_bytes / ch; case AV_CODEC_ID_PCM_LXF: return 2 * (frame_bytes / (5 * ch)); case AV_CODEC_ID_IAC: case AV_CODEC_ID_IMC: return 4 * frame_bytes / ch; } if (tag) { /* calc from frame_bytes, channels, and codec_tag */ if (id == AV_CODEC_ID_SOL_DPCM) { if (tag == 3) return frame_bytes / ch; else return frame_bytes * 2 / ch; } } if (ba > 0) { /* calc from frame_bytes, channels, and block_align */ int blocks = frame_bytes / ba; int64_t tmp = 0; switch (id) { case AV_CODEC_ID_ADPCM_IMA_WAV: if (bps < 2 || bps > 5) return 0; tmp = blocks * (1LL + (ba - 4 * ch) / (bps * ch) * 8); break; case AV_CODEC_ID_ADPCM_IMA_DK3: tmp = blocks * (((ba - 16LL) * 2 / 3 * 4) / ch); break; case AV_CODEC_ID_ADPCM_IMA_DK4: tmp = blocks * (1 + (ba - 4LL * ch) * 2 / ch); break; case AV_CODEC_ID_ADPCM_IMA_RAD: tmp = blocks * ((ba - 4LL * ch) * 2 / ch); break; case AV_CODEC_ID_ADPCM_MS: tmp = blocks * (2 + (ba - 7LL * ch) * 2LL / ch); break; case AV_CODEC_ID_ADPCM_MTAF: tmp = blocks * (ba - 16LL) * 2 / ch; break; case AV_CODEC_ID_ADPCM_XMD: tmp = blocks * 32; break; } if (tmp) { if (tmp != (int)tmp) return 0; return tmp; } } if (bps > 0) { /* calc from frame_bytes, channels, and bits_per_coded_sample */ switch (id) { case AV_CODEC_ID_PCM_DVD: if(bps<4 || frame_bytes<3) return 0; return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch)); case AV_CODEC_ID_PCM_BLURAY: if(bps<4 || frame_bytes<4) return 0; return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8); case AV_CODEC_ID_S302M: return 2 * (frame_bytes / ((bps + 4) / 4)) / ch; } } } } /* Fall back on using frame_size */ if (frame_size > 1 && frame_bytes) return frame_size; //For WMA we currently have no other means to calculate duration thus we //do it here by assuming CBR, which is true for all known cases. if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) { if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2) return (frame_bytes * 8LL * sr) / bitrate; } return 0; } int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes) { int channels = avctx->ch_layout.nb_channels; int duration; duration = get_audio_frame_duration(avctx->codec_id, avctx->sample_rate, channels, avctx->block_align, avctx->codec_tag, avctx->bits_per_coded_sample, avctx->bit_rate, avctx->extradata, avctx->frame_size, frame_bytes); return FFMAX(0, duration); } int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes) { int channels = par->ch_layout.nb_channels; int duration; duration = get_audio_frame_duration(par->codec_id, par->sample_rate, channels, par->block_align, par->codec_tag, par->bits_per_coded_sample, par->bit_rate, par->extradata, par->frame_size, frame_bytes); return FFMAX(0, duration); } #if !HAVE_THREADS int ff_thread_init(AVCodecContext *s) { return -1; } #endif unsigned int av_xiphlacing(unsigned char *s, unsigned int v) { unsigned int n = 0; while (v >= 0xff) { *s++ = 0xff; v -= 0xff; n++; } *s = v; n++; return n; } int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b) { int i; for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ; return i; } const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *avcodec, int index) { const FFCodec *const codec = ffcodec(avcodec); int i; if (!codec->hw_configs || index < 0) return NULL; for (i = 0; i <= index; i++) if (!codec->hw_configs[i]) return NULL; return &codec->hw_configs[index]->public; } int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src) { int ret; dst->owner[0] = src->owner[0]; dst->owner[1] = src->owner[1]; ret = av_frame_ref(dst->f, src->f); if (ret < 0) return ret; av_assert0(!dst->progress); if (src->progress) dst->progress = ff_refstruct_ref(src->progress); return 0; } int ff_thread_replace_frame(ThreadFrame *dst, const ThreadFrame *src) { int ret; dst->owner[0] = src->owner[0]; dst->owner[1] = src->owner[1]; ret = av_frame_replace(dst->f, src->f); if (ret < 0) return ret; ff_refstruct_replace(&dst->progress, src->progress); return 0; } #if !HAVE_THREADS int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags) { return ff_get_buffer(avctx, f, flags); } int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags) { f->owner[0] = f->owner[1] = avctx; return ff_get_buffer(avctx, f->f, flags); } void ff_thread_release_ext_buffer(ThreadFrame *f) { f->owner[0] = f->owner[1] = NULL; if (f->f) av_frame_unref(f->f); } void ff_thread_finish_setup(AVCodecContext *avctx) { } void ff_thread_report_progress(ThreadFrame *f, int progress, int field) { } void ff_thread_await_progress(const ThreadFrame *f, int progress, int field) { } int ff_thread_can_start_frame(AVCodecContext *avctx) { return 1; } int ff_slice_thread_init_progress(AVCodecContext *avctx) { return 0; } int ff_slice_thread_allocz_entries(AVCodecContext *avctx, int count) { return 0; } void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift) { } void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n) { } #endif const uint8_t *avpriv_find_start_code(const uint8_t *restrict p, const uint8_t *end, uint32_t *restrict state) { int i; av_assert0(p <= end); if (p >= end) return end; for (i = 0; i < 3; i++) { uint32_t tmp = *state << 8; *state = tmp + *(p++); if (tmp == 0x100 || p == end) return p; } while (p < end) { if (p[-1] > 1 ) p += 3; else if (p[-2] ) p += 2; else if (p[-3]|(p[-1]-1)) p++; else { p++; break; } } p = FFMIN(p, end) - 4; *state = AV_RB32(p); return p + 4; } AVCPBProperties *av_cpb_properties_alloc(size_t *size) { AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties)); if (!props) return NULL; if (size) *size = sizeof(*props); props->vbv_delay = UINT64_MAX; return props; } static unsigned bcd2uint(uint8_t bcd) { unsigned low = bcd & 0xf; unsigned high = bcd >> 4; if (low > 9 || high > 9) return 0; return low + 10*high; } int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len, void **data, size_t *sei_size) { AVFrameSideData *sd = NULL; uint8_t *sei_data; PutBitContext pb; uint32_t *tc; int m; if (frame) sd = av_frame_get_side_data(frame, AV_FRAME_DATA_S12M_TIMECODE); if (!sd) { *data = NULL; return 0; } tc = (uint32_t*)sd->data; m = tc[0] & 3; *sei_size = sizeof(uint32_t) * 4; *data = av_mallocz(*sei_size + prefix_len); if (!*data) return AVERROR(ENOMEM); sei_data = (uint8_t*)*data + prefix_len; init_put_bits(&pb, sei_data, *sei_size); put_bits(&pb, 2, m); // num_clock_ts for (int j = 1; j <= m; j++) { uint32_t tcsmpte = tc[j]; unsigned hh = bcd2uint(tcsmpte & 0x3f); // 6-bit hours unsigned mm = bcd2uint(tcsmpte>>8 & 0x7f); // 7-bit minutes unsigned ss = bcd2uint(tcsmpte>>16 & 0x7f); // 7-bit seconds unsigned ff = bcd2uint(tcsmpte>>24 & 0x3f); // 6-bit frames unsigned drop = tcsmpte & 1<<30 && !0; // 1-bit drop if not arbitrary bit /* Calculate frame number of HEVC by SMPTE ST 12-1:2014 Sec 12.2 if rate > 30FPS */ if (av_cmp_q(rate, (AVRational) {30, 1}) == 1) { unsigned pc; ff *= 2; if (av_cmp_q(rate, (AVRational) {50, 1}) == 0) pc = !!(tcsmpte & 1 << 7); else pc = !!(tcsmpte & 1 << 23); ff = (ff + pc) & 0x7f; } put_bits(&pb, 1, 1); // clock_timestamp_flag put_bits(&pb, 1, 1); // units_field_based_flag put_bits(&pb, 5, 0); // counting_type put_bits(&pb, 1, 1); // full_timestamp_flag put_bits(&pb, 1, 0); // discontinuity_flag put_bits(&pb, 1, drop); put_bits(&pb, 9, ff); put_bits(&pb, 6, ss); put_bits(&pb, 6, mm); put_bits(&pb, 5, hh); put_bits(&pb, 5, 0); } flush_put_bits(&pb); return 0; } int64_t ff_guess_coded_bitrate(AVCodecContext *avctx) { AVRational framerate = avctx->framerate; int bits_per_coded_sample = avctx->bits_per_coded_sample; int64_t bitrate; if (!(framerate.num && framerate.den)) framerate = av_inv_q(avctx->time_base); if (!(framerate.num && framerate.den)) return 0; if (!bits_per_coded_sample) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); bits_per_coded_sample = av_get_bits_per_pixel(desc); } bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height * framerate.num / framerate.den; return bitrate; }