On Fri, 2017-08-04 at 19:20 +0200, Tomas Härdin wrote: > TODO: > > * have -mode be an integer and use the CONST system Nicolas mentioned > * option for demuxing multiple frames at a time > * sort the extradata aliasing thing > * address API issues in libcodec2, possibly modify the format (there > should still be time)
Had some time today and went over and addressed all TODOs but the API issue in libcodec2. For that I need to figure out why reCAPTCHA is broken on sourceforge.net, to be able to fix my ML registration >:| I split the patchset into one for lavc and a second for lavf, plus a third for the small ffmpeg CLI fix. Should make review simpler. I also removed the 0xC0DEC2 magic from extradata, mostly as part of reworking codec2utils Finally I made codec2_probe only award AVPROBE_SCORE_MAX if the file extension is .c2 Feel free to comment /Tomas
From b693b6175289e6ad0c643462d8f69f6830086099 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <tjop...@acc.umu.se> Date: Thu, 3 Aug 2017 17:33:04 +0200 Subject: [PATCH 3/3] Don't complain about codec2's 700 bit/s modes in ffmpeg.c --- ffmpeg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ffmpeg.c b/ffmpeg.c index 888d19a647..09a5b541c0 100644 --- a/ffmpeg.c +++ b/ffmpeg.c @@ -3480,7 +3480,8 @@ static int init_output_stream(OutputStream *ost, char *error, int error_len) av_buffersink_set_frame_size(ost->filter->filter, ost->enc_ctx->frame_size); assert_avoptions(ost->encoder_opts); - if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000) + if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000 && + ost->enc_ctx->codec_id != AV_CODEC_ID_CODEC2 /* don't complain about 700 bit/s modes */) av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low." " It takes bits/s as argument, not kbits/s\n"); -- 2.13.3
From 057b941e82aeb8ccc835fb6a11baac4cb245a531 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <tjop...@acc.umu.se> Date: Tue, 8 Aug 2017 15:28:06 +0200 Subject: [PATCH 2/3] Add muxer/demuxer for raw codec2 and .c2 files --- Changelog | 1 + doc/general.texi | 2 + libavformat/Makefile | 4 + libavformat/allformats.c | 2 + libavformat/codec2.c | 313 +++++++++++++++++++++++++++++++++++++++++++++++ libavformat/rawenc.c | 13 ++ libavformat/utils.c | 1 + libavformat/version.h | 2 +- 8 files changed, 337 insertions(+), 1 deletion(-) create mode 100644 libavformat/codec2.c diff --git a/Changelog b/Changelog index a3a16f0073..c95ffa8d16 100644 --- a/Changelog +++ b/Changelog @@ -33,6 +33,7 @@ version <next>: - tlut2 video filter - floodfill video filter - codec2 en/decoding via libcodec2 +- muxer/demuxer for raw codec2 files and .c2 files version 3.3: - CrystalHD decoder moved to new decode API diff --git a/doc/general.texi b/doc/general.texi index fd8d657e4e..4bcc2b2d91 100644 --- a/doc/general.texi +++ b/doc/general.texi @@ -299,6 +299,8 @@ library: @item BRSTM @tab @tab X @tab Audio format used on the Nintendo Wii. @item BWF @tab X @tab X +@item codec2 (raw) @tab X @tab X +@item codec2 (.c2 files) @tab X @tab X @item CRI ADX @tab X @tab X @tab Audio-only format used in console video games. @item Discworld II BMV @tab @tab X diff --git a/libavformat/Makefile b/libavformat/Makefile index b0ef82cdd4..9aa3466161 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -128,6 +128,10 @@ OBJS-$(CONFIG_CAVSVIDEO_MUXER) += rawenc.o OBJS-$(CONFIG_CDG_DEMUXER) += cdg.o OBJS-$(CONFIG_CDXL_DEMUXER) += cdxl.o OBJS-$(CONFIG_CINE_DEMUXER) += cinedec.o +OBJS-$(CONFIG_CODEC2_DEMUXER) += ../libavcodec/codec2utils.o codec2.o rawdec.o pcm.o +OBJS-$(CONFIG_CODEC2_MUXER) += ../libavcodec/codec2utils.o codec2.o rawenc.o +OBJS-$(CONFIG_CODEC2RAW_DEMUXER) += ../libavcodec/codec2utils.o codec2.o rawdec.o pcm.o +OBJS-$(CONFIG_CODEC2RAW_MUXER) += rawenc.o OBJS-$(CONFIG_CONCAT_DEMUXER) += concatdec.o OBJS-$(CONFIG_CRC_MUXER) += crcenc.o OBJS-$(CONFIG_DATA_DEMUXER) += rawdec.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 1ebc14231c..26f0f1eccd 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -94,6 +94,8 @@ static void register_all(void) REGISTER_DEMUXER (CDG, cdg); REGISTER_DEMUXER (CDXL, cdxl); REGISTER_DEMUXER (CINE, cine); + REGISTER_MUXDEMUX(CODEC2, codec2); + REGISTER_MUXDEMUX(CODEC2RAW, codec2raw); REGISTER_DEMUXER (CONCAT, concat); REGISTER_MUXER (CRC, crc); REGISTER_MUXER (DASH, dash); diff --git a/libavformat/codec2.c b/libavformat/codec2.c new file mode 100644 index 0000000000..95b827f2b0 --- /dev/null +++ b/libavformat/codec2.c @@ -0,0 +1,313 @@ +/* + * codec2 muxer and demuxers + * Copyright (c) 2017 Tomas Härdin + * + * 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 + */ + +#include <memory.h> +#include "libavcodec/codec2utils.h" +#include "avio_internal.h" +#include "avformat.h" +#include "internal.h" +#include "rawdec.h" +#include "rawenc.h" +#include "pcm.h" + +#define AVPRIV_CODEC2_HEADER_SIZE 7 + +//the lowest version we should ever run across is 0.8 +//we may run across later versions as the format evolves +#define EXPECTED_CODEC2_MAJOR_VERSION 0 +#define EXPECTED_CODEC2_MINOR_VERSION 8 + +typedef struct { + const AVClass *class; + int mode; + int frames_per_packet; +} Codec2Context; + +static const uint8_t avpriv_codec2_magic[3] = {0xC0, 0xDE, 0xC2}; + +//check for 0xC0DEC2, return non-zero if it doesn't match +static int check_magic(uint8_t *ptr) { + return memcmp(ptr, avpriv_codec2_magic, 3); +} + +static int codec2_probe(AVProbeData *p) +{ + int score; + + //must be at least 7 bytes and start wih 0xC0DEC2 + if (p->buf_size < AVPRIV_CODEC2_HEADER_SIZE || check_magic(p->buf)) { + return 0; + } + + //no .c2 files prior to 0.8 + if (p->buf[3] == 0 && p->buf[4] < 8) { + return 0; + } + + //give a poor score if major version doesn't match + //this allows such files to be detected at least, even if we can't do much with them + if (p->buf[3] != EXPECTED_CODEC2_MAJOR_VERSION) { + return AVPROBE_SCORE_MAX/10; + } + + //if the minor version is known, no unknown mode is used and no flags are set then -> max score, + //else penalize 20% for each byte outside of expectations + //this way if only the first four bytes are OK then we're slightly less than AVPROBE_SCORE_MAX/2 + //cap score at max-1 unless file extension is .c2 + score = AVPROBE_SCORE_MAX; + if (!av_match_ext(p->filename, "c2")) score -= 1; + if (p->buf[4] > EXPECTED_CODEC2_MINOR_VERSION) score -= AVPROBE_SCORE_MAX/5; + if (p->buf[5] > AVPRIV_CODEC2_MAX_KNOWN_MODE) score -= AVPROBE_SCORE_MAX/5; + if (p->buf[6] != 0) score -= AVPROBE_SCORE_MAX/5; + return score; +} + +static int codec2_read_header_common(AVFormatContext *s, AVStream *st) +{ + int mode = avpriv_codec2_mode_from_extradata(st->codecpar->extradata); + + st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; + st->codecpar->codec_id = AV_CODEC_ID_CODEC2; + st->codecpar->sample_rate = 8000; + st->codecpar->channels = 1; + st->codecpar->format = AV_SAMPLE_FMT_S16; + st->codecpar->channel_layout = AV_CH_LAYOUT_MONO; + st->codecpar->bit_rate = avpriv_codec2_mode_bit_rate(s, mode); + st->codecpar->frame_size = avpriv_codec2_mode_frame_size(s, mode); + st->codecpar->block_align = avpriv_codec2_mode_block_align(s, mode); + + if (st->codecpar->bit_rate <= 0 || + st->codecpar->frame_size <= 0 || + st->codecpar->block_align <= 0) { + return AVERROR(EINVAL); + } + + avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); + + //replicating estimate_timings_from_bit_rate() in utils.c to avoid warnings + if (s->pb && st->codecpar->bit_rate > 0) { + int64_t filesize = avio_size(s->pb); + if (filesize > s->internal->data_offset) { + filesize -= s->internal->data_offset; + st->duration = av_rescale(8 * filesize, + st->time_base.den, + st->codecpar->bit_rate * (int64_t) st->time_base.num); + } + } + + return 0; +} + +static int codec2_read_header(AVFormatContext *s) +{ + AVStream *st = avformat_new_stream(s, NULL); + int ret, version; + uint8_t magic[3]; + + if (!st) { + return AVERROR(ENOMEM); + } + + avio_read(s->pb, magic, 3); + if (check_magic(magic)) { + av_log(s, AV_LOG_ERROR, "not a .c2 file\n"); + return AVERROR_INVALIDDATA; + } + + ret = ff_alloc_extradata(st->codecpar, AVPRIV_CODEC2_EXTRADATA_SIZE); + if (ret) { + return ret; + } + + avio_read(s->pb, st->codecpar->extradata, AVPRIV_CODEC2_EXTRADATA_SIZE); + + version = avpriv_codec2_version_from_extradata(st->codecpar->extradata); + if ((version >> 8) != EXPECTED_CODEC2_MAJOR_VERSION) { + avpriv_report_missing_feature(s, "Major version %i", version >> 8); + return AVERROR_PATCHWELCOME; + } + + s->internal->data_offset = AVPRIV_CODEC2_HEADER_SIZE; + + return codec2_read_header_common(s, st); +} + +static int codec2_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + Codec2Context *c2 = s->priv_data; + AVStream *st = s->streams[0]; + int ret, size, n, block_align, frame_size; + + block_align = st->codecpar->block_align; + frame_size = st->codecpar->frame_size; + + if (block_align <= 0 || frame_size <= 0 || c2->frames_per_packet <= 0) { + return AVERROR(EINVAL); + } + + //try to read desired number of frames, compute n from to actual number of bytes read + size = c2->frames_per_packet * block_align; + ret = av_get_packet(s->pb, pkt, size); + if (ret < 0) { + return ret; + } + + //only set duration - compute_pkt_fields() and ff_pcm_read_seek() takes care of everything else + //tested by spamming the seek functionality in ffplay + n = ret / block_align; + pkt->duration = n * frame_size; + + return ret; +} + +static int codec2_write_header(AVFormatContext *s) +{ + AVStream *st; + + if (s->nb_streams != 1 || s->streams[0]->codecpar->codec_id != AV_CODEC_ID_CODEC2) { + av_log(s, AV_LOG_ERROR, ".c2 files must have exactly one codec2 stream\n"); + return AVERROR(EINVAL); + } + + st = s->streams[0]; + + if (st->codecpar->extradata_size != AVPRIV_CODEC2_EXTRADATA_SIZE) { + av_log(s, AV_LOG_ERROR, ".c2 files require exactly %i bytes of extradata (got %i)\n", + AVPRIV_CODEC2_EXTRADATA_SIZE, st->codecpar->extradata_size); + return AVERROR(EINVAL); + } + + avio_write(s->pb, avpriv_codec2_magic, 3); + avio_write(s->pb, st->codecpar->extradata, AVPRIV_CODEC2_EXTRADATA_SIZE); + + return 0; +} + +static int codec2raw_read_header(AVFormatContext *s) +{ + Codec2Context *c2 = s->priv_data; + int ret; + + if (c2->mode < 0) { + //FIXME: using a default value of -1 for mandatory options is an incredibly ugly hack + av_log(s, AV_LOG_ERROR, "-mode must be set in order to make sense of raw codec2 files\n"); + return AVERROR(EINVAL); + } + + AVStream *st = avformat_new_stream(s, NULL); + if (!st) { + return AVERROR(ENOMEM); + } + + ret = ff_alloc_extradata(st->codecpar, AVPRIV_CODEC2_EXTRADATA_SIZE); + if (ret) { + return ret; + } + + s->internal->data_offset = 0; + avpriv_codec2_make_extradata(st->codecpar->extradata, c2->mode); + + return codec2_read_header_common(s, st); +} + +//transcoding report2074.c2 to wav went from 7.391s to 5.322s with -frames_per_packet 1000 compared to default, same sha1sum +#define FRAMES_PER_PACKET \ + { "frames_per_packet", "Number of frames to read at a time. Higher = faster decoding, lower granularity", \ + offsetof(Codec2Context, frames_per_packet), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM} + +static const AVOption codec2_options[] = { + FRAMES_PER_PACKET, + { NULL }, +}; + +static const AVOption codec2raw_options[] = { + AVPRIV_CODEC2_AVOPTIONS("codec2 mode [mandatory]", Codec2Context, -1, -1, AV_OPT_FLAG_DECODING_PARAM), + FRAMES_PER_PACKET, + { NULL }, +}; + +static const AVClass codec2_mux_class = { + .class_name = "codec2 muxer", + .item_name = av_default_item_name, + .version = LIBAVUTIL_VERSION_INT, + .category = AV_CLASS_CATEGORY_DEMUXER, +}; + +static const AVClass codec2_demux_class = { + .class_name = "codec2 demuxer", + .item_name = av_default_item_name, + .option = codec2_options, + .version = LIBAVUTIL_VERSION_INT, + .category = AV_CLASS_CATEGORY_DEMUXER, +}; + +static const AVClass codec2raw_demux_class = { + .class_name = "codec2raw demuxer", + .item_name = av_default_item_name, + .option = codec2raw_options, + .version = LIBAVUTIL_VERSION_INT, + .category = AV_CLASS_CATEGORY_DEMUXER, +}; + +#if CONFIG_CODEC2_DEMUXER +AVInputFormat ff_codec2_demuxer = { + .name = "codec2", + .long_name = NULL_IF_CONFIG_SMALL("codec2 .c2 demuxer"), + .priv_data_size = sizeof(Codec2Context), + .extensions = "c2", + .read_probe = codec2_probe, + .read_header = codec2_read_header, + .read_packet = codec2_read_packet, + .read_seek = ff_pcm_read_seek, + .flags = AVFMT_GENERIC_INDEX, + .raw_codec_id = AV_CODEC_ID_CODEC2, + .priv_class = &codec2_demux_class, +}; +#endif + +#if CONFIG_CODEC2_MUXER +AVOutputFormat ff_codec2_muxer = { + .name = "codec2", + .long_name = NULL_IF_CONFIG_SMALL("codec2 .c2 muxer"), + .priv_data_size = sizeof(Codec2Context), + .extensions = "c2", + .audio_codec = AV_CODEC_ID_CODEC2, + .video_codec = AV_CODEC_ID_NONE, + .write_header = codec2_write_header, + .write_packet = ff_raw_write_packet, + .flags = AVFMT_NOTIMESTAMPS, + .priv_class = &codec2_mux_class, +}; +#endif + +#if CONFIG_CODEC2RAW_DEMUXER +AVInputFormat ff_codec2raw_demuxer = { + .name = "codec2raw", + .long_name = NULL_IF_CONFIG_SMALL("raw codec2 demuxer"), + .priv_data_size = sizeof(Codec2Context), + .read_header = codec2raw_read_header, + .read_packet = codec2_read_packet, + .read_seek = ff_pcm_read_seek, + .flags = AVFMT_GENERIC_INDEX, + .raw_codec_id = AV_CODEC_ID_CODEC2, + .priv_class = &codec2raw_demux_class, +}; +#endif diff --git a/libavformat/rawenc.c b/libavformat/rawenc.c index 26baa850e1..6ef22f21e3 100644 --- a/libavformat/rawenc.c +++ b/libavformat/rawenc.c @@ -104,6 +104,19 @@ AVOutputFormat ff_cavsvideo_muxer = { }; #endif +#if CONFIG_CODEC2RAW_MUXER +AVOutputFormat ff_codec2raw_muxer = { + .name = "codec2raw", + .long_name = NULL_IF_CONFIG_SMALL("raw codec2 muxer"), + .audio_codec = AV_CODEC_ID_CODEC2, + .video_codec = AV_CODEC_ID_NONE, + .write_header = force_one_stream, + .write_packet = ff_raw_write_packet, + .flags = AVFMT_NOTIMESTAMPS, +}; +#endif + + #if CONFIG_DATA_MUXER AVOutputFormat ff_data_muxer = { .name = "data", diff --git a/libavformat/utils.c b/libavformat/utils.c index 58283616dc..bbd2f96462 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -898,6 +898,7 @@ static int determinable_frame_size(AVCodecContext *avctx) case AV_CODEC_ID_MP1: case AV_CODEC_ID_MP2: case AV_CODEC_ID_MP3: + case AV_CODEC_ID_CODEC2: return 1; } diff --git a/libavformat/version.h b/libavformat/version.h index 48b81f2e48..a8cf4c158e 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -32,7 +32,7 @@ // Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium) // Also please add any ticket numbers that you believe might be affected here #define LIBAVFORMAT_VERSION_MAJOR 57 -#define LIBAVFORMAT_VERSION_MINOR 76 +#define LIBAVFORMAT_VERSION_MINOR 77 #define LIBAVFORMAT_VERSION_MICRO 100 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ -- 2.13.3
From c9ba525447a461a9e6961e942f83d9bd8bdf342b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <tjop...@acc.umu.se> Date: Tue, 8 Aug 2017 15:27:27 +0200 Subject: [PATCH 1/3] Add libcodec2 en/decoder --- Changelog | 1 + configure | 5 ++ doc/general.texi | 11 +++ libavcodec/Makefile | 2 + libavcodec/allcodecs.c | 1 + libavcodec/avcodec.h | 1 + libavcodec/codec2utils.c | 80 +++++++++++++++++++ libavcodec/codec2utils.h | 92 ++++++++++++++++++++++ libavcodec/codec_desc.c | 7 ++ libavcodec/libcodec2.c | 196 +++++++++++++++++++++++++++++++++++++++++++++++ libavcodec/version.h | 2 +- 11 files changed, 397 insertions(+), 1 deletion(-) create mode 100644 libavcodec/codec2utils.c create mode 100644 libavcodec/codec2utils.h create mode 100644 libavcodec/libcodec2.c diff --git a/Changelog b/Changelog index c797d68a36..a3a16f0073 100644 --- a/Changelog +++ b/Changelog @@ -32,6 +32,7 @@ version <next>: - unpremultiply video filter - tlut2 video filter - floodfill video filter +- codec2 en/decoding via libcodec2 version 3.3: - CrystalHD decoder moved to new decode API diff --git a/configure b/configure index 66c7b948e4..50f455af71 100755 --- a/configure +++ b/configure @@ -220,6 +220,7 @@ External library support: --enable-libcaca enable textual display using libcaca [no] --enable-libcelt enable CELT decoding via libcelt [no] --enable-libcdio enable audio CD grabbing with libcdio [no] + --enable-libcodec2 enable codec2 en/decoding using libcodec2 [no] --enable-libdc1394 enable IIDC-1394 grabbing using libdc1394 and libraw1394 [no] --enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no] @@ -1540,6 +1541,7 @@ EXTERNAL_LIBRARY_LIST=" libbs2b libcaca libcelt + libcodec2 libdc1394 libflite libfontconfig @@ -2863,6 +2865,8 @@ pcm_mulaw_at_encoder_select="audio_frame_queue" chromaprint_muxer_deps="chromaprint" h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads" libcelt_decoder_deps="libcelt" +libcodec2_decoder_deps="libcodec2" +libcodec2_encoder_deps="libcodec2" libfdk_aac_decoder_deps="libfdk_aac" libfdk_aac_encoder_deps="libfdk_aac" libfdk_aac_encoder_select="audio_frame_queue" @@ -5837,6 +5841,7 @@ enabled libcelt && require libcelt celt/celt.h celt_decode -lcelt0 && { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 || die "ERROR: libcelt must be installed and version must be >= 0.11.0."; } enabled libcaca && require_pkg_config caca caca.h caca_create_canvas +enabled libcodec2 && require libcodec2 codec2/codec2.h codec2_create -lcodec2 enabled libdc1394 && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new enabled libfdk_aac && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen || { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac && diff --git a/doc/general.texi b/doc/general.texi index 036c8c25d4..fd8d657e4e 100644 --- a/doc/general.texi +++ b/doc/general.texi @@ -85,6 +85,15 @@ Go to @url{http://www.twolame.org/} and follow the instructions for installing the library. Then pass @code{--enable-libtwolame} to configure to enable it. +@section libcodec2 + +FFmpeg can make use of libcodec2 to codec2 encoding and decoding. +There is currently no native decoder, so libcodec2 must be used for decoding. + +Go to @url{http://freedv.org/}, download "Codec 2 source archive". +Build and install using CMake. Debian users can install the libcodec2-dev package instead. +Once libcodec2 is installed you can pass @code{--enable-libcodec2} to configure to enable it. + @section libvpx FFmpeg can make use of the libvpx library for VP8/VP9 encoding. @@ -994,6 +1003,8 @@ following image formats are supported: @tab Used in Bink and Smacker files in many games. @item CELT @tab @tab E @tab decoding supported through external library libcelt +@item codec2 @tab E @tab E + @tab en/decoding supported through external library libcodec2 @item Delphine Software International CIN audio @tab @tab X @tab Codec used in Delphine Software International games. @item Digital Speech Standard - Standard Play mode (DSS SP) @tab @tab X diff --git a/libavcodec/Makefile b/libavcodec/Makefile index b0c39ac040..4ba1f8e138 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -885,6 +885,8 @@ OBJS-$(CONFIG_ILBC_AT_ENCODER) += audiotoolboxenc.o OBJS-$(CONFIG_PCM_ALAW_AT_ENCODER) += audiotoolboxenc.o OBJS-$(CONFIG_PCM_MULAW_AT_ENCODER) += audiotoolboxenc.o OBJS-$(CONFIG_LIBCELT_DECODER) += libcelt_dec.o +OBJS-$(CONFIG_LIBCODEC2_DECODER) += libcodec2.o codec2utils.o +OBJS-$(CONFIG_LIBCODEC2_ENCODER) += libcodec2.o codec2utils.o OBJS-$(CONFIG_LIBFDK_AAC_DECODER) += libfdk-aacdec.o OBJS-$(CONFIG_LIBFDK_AAC_ENCODER) += libfdk-aacenc.o OBJS-$(CONFIG_LIBGSM_DECODER) += libgsmdec.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 4712592a5f..5296fac507 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -618,6 +618,7 @@ static void register_all(void) REGISTER_DECODER(QDMC_AT, qdmc_at); REGISTER_DECODER(QDM2_AT, qdm2_at); REGISTER_DECODER(LIBCELT, libcelt); + REGISTER_ENCDEC (LIBCODEC2, libcodec2); REGISTER_ENCDEC (LIBFDK_AAC, libfdk_aac); REGISTER_ENCDEC (LIBGSM, libgsm); REGISTER_ENCDEC (LIBGSM_MS, libgsm_ms); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index c594993766..488eb8b1f5 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -622,6 +622,7 @@ enum AVCodecID { AV_CODEC_ID_PAF_AUDIO, AV_CODEC_ID_ON2AVC, AV_CODEC_ID_DSS_SP, + AV_CODEC_ID_CODEC2, AV_CODEC_ID_FFWAVESYNTH = 0x15800, AV_CODEC_ID_SONIC, diff --git a/libavcodec/codec2utils.c b/libavcodec/codec2utils.c new file mode 100644 index 0000000000..fb8b4b48b3 --- /dev/null +++ b/libavcodec/codec2utils.c @@ -0,0 +1,80 @@ +/* + * codec2 utility functions + * Copyright (c) 2017 Tomas Härdin + * + * 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 + */ + +#include <string.h> +#include "internal.h" +#include "libavcodec/codec2utils.h" + +int avpriv_codec2_mode_bit_rate(void *logctx, int mode) +{ + int frame_size = avpriv_codec2_mode_frame_size(logctx, mode); + int block_align = avpriv_codec2_mode_block_align(logctx, mode); + + if (frame_size <= 0 || block_align <= 0) { + return 0; + } + + return 8 * 8000 * block_align / frame_size; +} + +int avpriv_codec2_mode_frame_size(void *logctx, int mode) +{ + int frame_size_table[AVPRIV_CODEC2_MAX_KNOWN_MODE+1] = { + 160, // 3200 + 160, // 2400 + 320, // 1600 + 320, // 1400 + 320, // 1300 + 320, // 1200 + 320, // 700 + 320, // 700B + 320, // 700C + }; + + if (mode < 0 || mode > AVPRIV_CODEC2_MAX_KNOWN_MODE) { + av_log(logctx, AV_LOG_ERROR, "unknown codec2 mode %i, can't find frame_size\n", mode); + return 0; + } else { + return frame_size_table[mode]; + } +} + +int avpriv_codec2_mode_block_align(void *logctx, int mode) +{ + int block_align_table[AVPRIV_CODEC2_MAX_KNOWN_MODE+1] = { + 8, // 3200 + 6, // 2400 + 8, // 1600 + 7, // 1400 + 7, // 1300 + 6, // 1200 + 4, // 700 + 4, // 700B + 4, // 700C + }; + + if (mode < 0 || mode > AVPRIV_CODEC2_MAX_KNOWN_MODE) { + av_log(logctx, AV_LOG_ERROR, "unknown codec2 mode %i, can't find block_align\n", mode); + return 0; + } else { + return block_align_table[mode]; + } +} diff --git a/libavcodec/codec2utils.h b/libavcodec/codec2utils.h new file mode 100644 index 0000000000..383e40e932 --- /dev/null +++ b/libavcodec/codec2utils.h @@ -0,0 +1,92 @@ +/* + * codec2 utility functions + * Copyright (c) 2017 Tomas Härdin + * + * Constants taken from codec2.h in libcodec2, which is also under the LGPL 2.1 + * Copyright (C) 2010 David Rowe + * + * 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 + */ + +#ifndef AVCODEC_CODEC2UTILS_H +#define AVCODEC_CODEC2UTILS_H + +#include <stdint.h> + +#ifndef __CODEC2__ +//from codec2.h, repeated here to avoid a dependency +#define CODEC2_MODE_3200 0 +#define CODEC2_MODE_2400 1 +#define CODEC2_MODE_1600 2 +#define CODEC2_MODE_1400 3 +#define CODEC2_MODE_1300 4 +#define CODEC2_MODE_1200 5 +#define CODEC2_MODE_700 6 +#define CODEC2_MODE_700B 7 +#define CODEC2_MODE_700C 8 +#endif + +#define AVPRIV_CODEC2_MAX_KNOWN_MODE CODEC2_MODE_700C + +//used by both codec2raw demuxer and libcodec2 encoder +#define AVPRIV_CODEC2_AVOPTIONS(desc, classname, min_val, default_val, option_flags) \ + { "mode", desc, offsetof(classname, mode), AV_OPT_TYPE_INT, {.i64 = default_val}, min_val, AVPRIV_CODEC2_MAX_KNOWN_MODE, .flags=option_flags, .unit="codec2_mode"},\ + { "3200", "3200", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_3200}, .flags=option_flags, .unit="codec2_mode"},\ + { "2400", "2400", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_2400}, .flags=option_flags, .unit="codec2_mode"},\ + { "1600", "1600", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_1600}, .flags=option_flags, .unit="codec2_mode"},\ + { "1400", "1400", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_1400}, .flags=option_flags, .unit="codec2_mode"},\ + { "1300", "1300", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_1300}, .flags=option_flags, .unit="codec2_mode"},\ + { "1200", "1200", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_1200}, .flags=option_flags, .unit="codec2_mode"},\ + { "700", "700", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_700}, .flags=option_flags, .unit="codec2_mode"},\ + { "700B", "700B", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_700B}, .flags=option_flags, .unit="codec2_mode"},\ + { "700C", "700C", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC2_MODE_700C}, .flags=option_flags, .unit="codec2_mode"} + +//The three following functions are here to avoid needing libavformat/codec2.c to depend on libcodec2 + +//Computes bitrate from mode, with frames rounded up to the nearest octet. +//So 700 bit/s (28 bits/frame) becomes 800 bits/s (32 bits/frame). +//logctx is used for av_log() +//Returns <0 if mode is invalid +int avpriv_codec2_mode_bit_rate(void *logctx, int mode); + +//duplicates codec2_samples_per_frame() +int avpriv_codec2_mode_frame_size(void *logctx, int mode); + +//duplicates (codec2_bits_per_frame()+7)/8 +int avpriv_codec2_mode_block_align(void *logctx, int mode); + +#define AVPRIV_CODEC2_EXTRADATA_SIZE 4 + +//Used in codec2raw demuxer and libcodec2 encoder +static inline void avpriv_codec2_make_extradata(uint8_t *ptr, int mode) { + //version 0.8 as of 2017-08-02 (r3345) + ptr[0] = 0; //major + ptr[1] = 8; //minor + ptr[2] = mode; //mode + ptr[3] = 0; //flags +} + +//Returns version as a 16-bit value. 0.8 -> 0x0008 +static inline uint16_t avpriv_codec2_version_from_extradata(uint8_t *ptr) { + return (ptr[0] << 8) + ptr[1]; +} + +static inline uint8_t avpriv_codec2_mode_from_extradata(uint8_t *ptr) { + return ptr[2]; +} + +#endif /* AVCODEC_CODEC2UTILS_H */ diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c index 6f43b68b83..b5f5c2d9d8 100644 --- a/libavcodec/codec_desc.c +++ b/libavcodec/codec_desc.c @@ -2657,6 +2657,13 @@ static const AVCodecDescriptor codec_descriptors[] = { .props = AV_CODEC_PROP_LOSSY, }, { + .id = AV_CODEC_ID_CODEC2, + .type = AVMEDIA_TYPE_AUDIO, + .name = "codec2", + .long_name = NULL_IF_CONFIG_SMALL("codec2 (very low bitrate speech codec)"), + .props = AV_CODEC_PROP_LOSSY, + }, + { .id = AV_CODEC_ID_G723_1, .type = AVMEDIA_TYPE_AUDIO, .name = "g723_1", diff --git a/libavcodec/libcodec2.c b/libavcodec/libcodec2.c new file mode 100644 index 0000000000..0373a425ed --- /dev/null +++ b/libavcodec/libcodec2.c @@ -0,0 +1,196 @@ +/* + * codec2 encoder/decoder using libcodec2 + * Copyright (c) 2017 Tomas Härdin + * + * 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 + */ + +#include <codec2/codec2.h> +#include "avcodec.h" +#include "libavutil/opt.h" +#include "internal.h" +#include "codec2utils.h" + +typedef struct { + const AVClass *class; + struct CODEC2 *codec; + int mode; +} LibCodec2Context; + +static const AVOption options[] = { + //not AV_OPT_FLAG_DECODING_PARAM since mode should come from the demuxer + //1300 (aka FreeDV 1600) is the most common mode on-the-air, default to it here as well + AVPRIV_CODEC2_AVOPTIONS("codec2 mode", LibCodec2Context, 0, CODEC2_MODE_1300, AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_ENCODING_PARAM), + { NULL }, +}; + +static const AVClass libcodec2_enc_class = { + .class_name = "libcodec2 encoder", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static const AVClass libcodec2_dec_class = { + .class_name = "libcodec2 decoder", + .item_name = av_default_item_name, + .version = LIBAVUTIL_VERSION_INT, +}; + +static av_cold int libcodec2_init_common(AVCodecContext *avctx, int mode) +{ + LibCodec2Context *c2 = avctx->priv_data; + + c2->codec = codec2_create(mode); + if (!c2->codec) { + //it's also possible that the mode is wrong, + //but we can't tell for sure with the current API + return AVERROR(ENOMEM); + } + + avctx->frame_size = codec2_samples_per_frame(c2->codec); + avctx->block_align = (codec2_bits_per_frame(c2->codec) + 7) / 8; + codec2_set_natural_or_gray(c2->codec, 1); + + return 0; +} + +static av_cold int libcodec2_init_decoder(AVCodecContext *avctx) +{ + avctx->sample_rate = 8000; + avctx->channels = 1; + avctx->sample_fmt = AV_SAMPLE_FMT_S16; + avctx->channel_layout = AV_CH_LAYOUT_MONO; + + if (avctx->extradata_size != AVPRIV_CODEC2_EXTRADATA_SIZE) { + av_log(avctx, AV_LOG_ERROR, "must have exactly %i bytes of extradata (got %i)\n", + AVPRIV_CODEC2_EXTRADATA_SIZE, avctx->extradata_size); + return AVERROR_INVALIDDATA; + } + + return libcodec2_init_common(avctx, avpriv_codec2_mode_from_extradata(avctx->extradata)); +} + +static av_cold int libcodec2_init_encoder(AVCodecContext *avctx) +{ + LibCodec2Context *c2 = avctx->priv_data; + + //will need to be smarter once we get wideband support + if (avctx->sample_rate != 8000 || + avctx->channels != 1 || + avctx->sample_fmt != AV_SAMPLE_FMT_S16) { + av_log(avctx, AV_LOG_ERROR, "only 8 kHz 16-bit mono allowed\n"); + return AVERROR(EINVAL); + } + + avctx->extradata = av_mallocz(AVPRIV_CODEC2_EXTRADATA_SIZE + AV_INPUT_BUFFER_PADDING_SIZE); + if (!avctx->extradata) { + return AVERROR(ENOMEM); + } + + avctx->extradata_size = AVPRIV_CODEC2_EXTRADATA_SIZE; + avpriv_codec2_make_extradata(avctx->extradata, c2->mode); + + return libcodec2_init_common(avctx, c2->mode); +} + +static av_cold int libcodec2_close(AVCodecContext *avctx) +{ + LibCodec2Context *c2 = avctx->priv_data; + + codec2_destroy(c2->codec); + return 0; +} + +static int libcodec2_decode(AVCodecContext *avctx, void *data, + int *got_frame_ptr, AVPacket *pkt) +{ + LibCodec2Context *c2 = avctx->priv_data; + AVFrame *frame = data; + int ret, nframes, i; + uint8_t *input; + int16_t *output; + + nframes = pkt->size / avctx->block_align; + frame->nb_samples = avctx->frame_size * nframes; + + ret = ff_get_buffer(avctx, frame, 0); + if (ret < 0) { + return ret; + } + + input = pkt->data; + output = (int16_t *)frame->data[0]; + + for (i = 0; i < nframes; i++) { + codec2_decode(c2->codec, output, input); + input += avctx->block_align; + output += avctx->frame_size; + } + + *got_frame_ptr = nframes > 0; + return nframes * avctx->block_align; +} + +static int libcodec2_encode(AVCodecContext *avctx, AVPacket *avpkt, + const AVFrame *frame, int *got_packet_ptr) +{ + LibCodec2Context *c2 = avctx->priv_data; + int16_t *samples = (int16_t *)frame->data[0]; + + int ret = ff_alloc_packet2(avctx, avpkt, avctx->block_align, 0); + if (ret < 0) { + return ret; + } + + codec2_encode(c2->codec, avpkt->data, samples); + *got_packet_ptr = 1; + + return 0; +} + +AVCodec ff_libcodec2_decoder = { + .name = "libcodec2", + .long_name = NULL_IF_CONFIG_SMALL("codec2 decoder using libcodec2"), + .type = AVMEDIA_TYPE_AUDIO, + .id = AV_CODEC_ID_CODEC2, + .priv_data_size = sizeof(LibCodec2Context), + .init = libcodec2_init_decoder, + .close = libcodec2_close, + .decode = libcodec2_decode, + .capabilities = 0, + .supported_samplerates = (const int[]){ 8000, 0 }, + .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }, + .channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_MONO, 0 }, + .priv_class = &libcodec2_dec_class, +}; + +AVCodec ff_libcodec2_encoder = { + .name = "libcodec2", + .long_name = NULL_IF_CONFIG_SMALL("codec2 encoder using libcodec2"), + .type = AVMEDIA_TYPE_AUDIO, + .id = AV_CODEC_ID_CODEC2, + .priv_data_size = sizeof(LibCodec2Context), + .init = libcodec2_init_encoder, + .close = libcodec2_close, + .encode2 = libcodec2_encode, + .capabilities = 0, + .supported_samplerates = (const int[]){ 8000, 0 }, + .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }, + .channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_MONO, 0 }, + .priv_class = &libcodec2_enc_class, +}; diff --git a/libavcodec/version.h b/libavcodec/version.h index 02c4f41800..7473000579 100644 --- a/libavcodec/version.h +++ b/libavcodec/version.h @@ -28,7 +28,7 @@ #include "libavutil/version.h" #define LIBAVCODEC_VERSION_MAJOR 57 -#define LIBAVCODEC_VERSION_MINOR 102 +#define LIBAVCODEC_VERSION_MINOR 103 #define LIBAVCODEC_VERSION_MICRO 100 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ -- 2.13.3
signature.asc
Description: This is a digitally signed message part
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel