diff options
Diffstat (limited to 'src/decoder/ffmpeg_decoder_plugin.c')
| -rw-r--r-- | src/decoder/ffmpeg_decoder_plugin.c | 634 |
1 files changed, 634 insertions, 0 deletions
diff --git a/src/decoder/ffmpeg_decoder_plugin.c b/src/decoder/ffmpeg_decoder_plugin.c new file mode 100644 index 000000000..f9d4eb8a9 --- /dev/null +++ b/src/decoder/ffmpeg_decoder_plugin.c @@ -0,0 +1,634 @@ +/* + * Copyright (C) 2003-2010 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "decoder_api.h" +#include "audio_check.h" + +#include <glib.h> + +#include <assert.h> +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +#ifdef OLD_FFMPEG_INCLUDES +#include <avcodec.h> +#include <avformat.h> +#include <avio.h> +#else +#include <libavcodec/avcodec.h> +#include <libavformat/avformat.h> +#include <libavformat/avio.h> +#include <libavutil/log.h> +#endif + +#undef G_LOG_DOMAIN +#define G_LOG_DOMAIN "ffmpeg" + +#ifndef OLD_FFMPEG_INCLUDES + +static GLogLevelFlags +level_ffmpeg_to_glib(int level) +{ + if (level <= AV_LOG_FATAL) + return G_LOG_LEVEL_CRITICAL; + + if (level <= AV_LOG_ERROR) + return G_LOG_LEVEL_WARNING; + + if (level <= AV_LOG_INFO) + return G_LOG_LEVEL_MESSAGE; + + return G_LOG_LEVEL_DEBUG; +} + +static void +mpd_ffmpeg_log_callback(G_GNUC_UNUSED void *ptr, int level, + const char *fmt, va_list vl) +{ + const AVClass * cls = NULL; + + if (ptr != NULL) + cls = *(const AVClass *const*)ptr; + + if (cls != NULL) { + char *domain = g_strconcat(G_LOG_DOMAIN, "/", cls->item_name(ptr), NULL); + g_logv(domain, level_ffmpeg_to_glib(level), fmt, vl); + g_free(domain); + } +} + +#endif /* !OLD_FFMPEG_INCLUDES */ + +struct mpd_ffmpeg_stream { + struct decoder *decoder; + struct input_stream *input; + + ByteIOContext *io; + unsigned char buffer[8192]; +}; + +static int +mpd_ffmpeg_stream_read(void *opaque, uint8_t *buf, int size) +{ + struct mpd_ffmpeg_stream *stream = opaque; + + return decoder_read(stream->decoder, stream->input, + (void *)buf, size); +} + +static int64_t +mpd_ffmpeg_stream_seek(void *opaque, int64_t pos, int whence) +{ + struct mpd_ffmpeg_stream *stream = opaque; + bool ret; + + if (whence == AVSEEK_SIZE) + return stream->input->size; + + ret = input_stream_seek(stream->input, pos, whence, NULL); + if (!ret) + return -1; + + return stream->input->offset; +} + +static struct mpd_ffmpeg_stream * +mpd_ffmpeg_stream_open(struct decoder *decoder, struct input_stream *input) +{ + struct mpd_ffmpeg_stream *stream = g_new(struct mpd_ffmpeg_stream, 1); + stream->decoder = decoder; + stream->input = input; + stream->io = av_alloc_put_byte(stream->buffer, sizeof(stream->buffer), + false, stream, + mpd_ffmpeg_stream_read, NULL, + input->seekable + ? mpd_ffmpeg_stream_seek : NULL); + if (stream->io == NULL) { + g_free(stream); + return NULL; + } + + return stream; +} + +static void +mpd_ffmpeg_stream_close(struct mpd_ffmpeg_stream *stream) +{ + av_free(stream->io); + g_free(stream); +} + +static bool +ffmpeg_init(G_GNUC_UNUSED const struct config_param *param) +{ +#ifndef OLD_FFMPEG_INCLUDES + av_log_set_callback(mpd_ffmpeg_log_callback); +#endif + + av_register_all(); + return true; +} + +static int +ffmpeg_find_audio_stream(const AVFormatContext *format_context) +{ + for (unsigned i = 0; i < format_context->nb_streams; ++i) + if (format_context->streams[i]->codec->codec_type == + CODEC_TYPE_AUDIO) + return i; + + return -1; +} + +/** + * On some platforms, libavcodec wants the output buffer aligned to 16 + * bytes (because it uses SSE/Altivec internally). This function + * returns the aligned version of the specified buffer, and corrects + * the buffer size. + */ +static void * +align16(void *p, size_t *length_p) +{ + unsigned add = 16 - (size_t)p % 16; + + *length_p -= add; + return (char *)p + add; +} + +static enum decoder_command +ffmpeg_send_packet(struct decoder *decoder, struct input_stream *is, + const AVPacket *packet, + AVCodecContext *codec_context, + const AVRational *time_base) +{ + enum decoder_command cmd = DECODE_COMMAND_NONE; + uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2 + 16]; + int16_t *aligned_buffer; + size_t buffer_size; + int len, audio_size; + uint8_t *packet_data; + int packet_size; + + if (packet->pts != (int64_t)AV_NOPTS_VALUE) + decoder_timestamp(decoder, + av_rescale_q(packet->pts, *time_base, + (AVRational){1, 1})); + + packet_data = packet->data; + packet_size = packet->size; + + buffer_size = sizeof(audio_buf); + aligned_buffer = align16(audio_buf, &buffer_size); + + while ((packet_size > 0) && (cmd == DECODE_COMMAND_NONE)) { + audio_size = buffer_size; + len = avcodec_decode_audio2(codec_context, + aligned_buffer, &audio_size, + packet_data, packet_size); + + if (len < 0) { + /* if error, we skip the frame */ + g_message("decoding failed\n"); + break; + } + + packet_data += len; + packet_size -= len; + + if (audio_size <= 0) + continue; + + cmd = decoder_data(decoder, is, + aligned_buffer, audio_size, + codec_context->bit_rate / 1000); + } + return cmd; +} + +static enum sample_format +ffmpeg_sample_format(G_GNUC_UNUSED const AVCodecContext *codec_context) +{ +#if LIBAVCODEC_VERSION_INT >= ((51<<16)+(41<<8)+0) + switch (codec_context->sample_fmt) { + case SAMPLE_FMT_S16: + return SAMPLE_FORMAT_S16; + + case SAMPLE_FMT_S32: + return SAMPLE_FORMAT_S32; + + default: + g_warning("Unsupported libavcodec SampleFormat value: %d", + codec_context->sample_fmt); + return SAMPLE_FORMAT_UNDEFINED; + } +#else + /* XXX fixme 16-bit for older ffmpeg (13 Aug 2007) */ + return SAMPLE_FORMAT_S16; +#endif +} + +static AVInputFormat * +ffmpeg_probe(struct decoder *decoder, struct input_stream *is) +{ + enum { + BUFFER_SIZE = 16384, + PADDING = 16, + }; + + unsigned char *buffer = g_malloc(BUFFER_SIZE); + size_t nbytes = decoder_read(decoder, is, buffer, BUFFER_SIZE); + if (nbytes <= PADDING || !input_stream_seek(is, 0, SEEK_SET, NULL)) { + g_free(buffer); + return NULL; + } + + /* some ffmpeg parsers (e.g. ac3_parser.c) read a few bytes + beyond the declared buffer limit, which makes valgrind + angry; this workaround removes some padding from the buffer + size */ + nbytes -= PADDING; + + AVProbeData avpd = { + .buf = buffer, + .buf_size = nbytes, + .filename = is->uri, + }; + + AVInputFormat *format = av_probe_input_format(&avpd, true); + g_free(buffer); + + return format; +} + +static void +ffmpeg_decode(struct decoder *decoder, struct input_stream *input) +{ + AVInputFormat *input_format = ffmpeg_probe(decoder, input); + if (input_format == NULL) + return; + + g_debug("detected input format '%s' (%s)", + input_format->name, input_format->long_name); + + struct mpd_ffmpeg_stream *stream = + mpd_ffmpeg_stream_open(decoder, input); + if (stream == NULL) { + g_warning("Failed to open stream"); + return; + } + + AVFormatContext *format_context; + AVCodecContext *codec_context; + AVCodec *codec; + int audio_stream; + + //ffmpeg works with ours "fileops" helper + if (av_open_input_stream(&format_context, stream->io, input->uri, + input_format, NULL) != 0) { + g_warning("Open failed\n"); + mpd_ffmpeg_stream_close(stream); + return; + } + + if (av_find_stream_info(format_context)<0) { + g_warning("Couldn't find stream info\n"); + av_close_input_stream(format_context); + mpd_ffmpeg_stream_close(stream); + return; + } + + audio_stream = ffmpeg_find_audio_stream(format_context); + if (audio_stream == -1) { + g_warning("No audio stream inside\n"); + av_close_input_stream(format_context); + mpd_ffmpeg_stream_close(stream); + return; + } + + codec_context = format_context->streams[audio_stream]->codec; + if (codec_context->codec_name[0] != 0) + g_debug("codec '%s'", codec_context->codec_name); + + codec = avcodec_find_decoder(codec_context->codec_id); + + if (!codec) { + g_warning("Unsupported audio codec\n"); + av_close_input_stream(format_context); + mpd_ffmpeg_stream_close(stream); + return; + } + + if (avcodec_open(codec_context, codec)<0) { + g_warning("Could not open codec\n"); + av_close_input_stream(format_context); + mpd_ffmpeg_stream_close(stream); + return; + } + + GError *error = NULL; + struct audio_format audio_format; + if (!audio_format_init_checked(&audio_format, + codec_context->sample_rate, + ffmpeg_sample_format(codec_context), + codec_context->channels, &error)) { + g_warning("%s", error->message); + g_error_free(error); + avcodec_close(codec_context); + av_close_input_stream(format_context); + mpd_ffmpeg_stream_close(stream); + return; + } + + int total_time = format_context->duration != (int64_t)AV_NOPTS_VALUE + ? format_context->duration / AV_TIME_BASE + : 0; + + decoder_initialized(decoder, &audio_format, + input->seekable, total_time); + + enum decoder_command cmd; + do { + AVPacket packet; + if (av_read_frame(format_context, &packet) < 0) + /* end of file */ + break; + + if (packet.stream_index == audio_stream) + cmd = ffmpeg_send_packet(decoder, input, + &packet, codec_context, + &format_context->streams[audio_stream]->time_base); + else + cmd = decoder_get_command(decoder); + + av_free_packet(&packet); + + if (cmd == DECODE_COMMAND_SEEK) { + int64_t where = + decoder_seek_where(decoder) * AV_TIME_BASE; + + if (av_seek_frame(format_context, -1, where, 0) < 0) + decoder_seek_error(decoder); + else + decoder_command_finished(decoder); + } + } while (cmd != DECODE_COMMAND_STOP); + + avcodec_close(codec_context); + av_close_input_stream(format_context); + mpd_ffmpeg_stream_close(stream); +} + +#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0) +typedef struct ffmpeg_tag_map { + enum tag_type type; + const char *name; +} ffmpeg_tag_map; + +static const ffmpeg_tag_map ffmpeg_tag_maps[] = { + { TAG_TITLE, "title" }, +#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(50<<8)) + { TAG_ARTIST, "artist" }, + { TAG_DATE, "date" }, +#else + { TAG_ARTIST, "author" }, + { TAG_DATE, "year" }, +#endif + { TAG_ALBUM, "album" }, + { TAG_COMMENT, "comment" }, + { TAG_GENRE, "genre" }, + { TAG_TRACK, "track" }, + { TAG_ARTIST_SORT, "author-sort" }, + { TAG_ALBUM_ARTIST, "album_artist" }, + { TAG_ALBUM_ARTIST_SORT, "album_artist-sort" }, + { TAG_COMPOSER, "composer" }, + { TAG_PERFORMER, "performer" }, + { TAG_DISC, "disc" }, +}; + +static bool +ffmpeg_copy_metadata(struct tag *tag, AVMetadata *m, + const ffmpeg_tag_map tag_map) +{ + AVMetadataTag *mt = NULL; + + while ((mt = av_metadata_get(m, tag_map.name, mt, 0)) != NULL) + tag_add_item(tag, tag_map.type, mt->value); + return mt != NULL; +} + +#endif + +//no tag reading in ffmpeg, check if playable +static struct tag * +ffmpeg_stream_tag(struct input_stream *is) +{ + AVInputFormat *input_format = ffmpeg_probe(NULL, is); + if (input_format == NULL) + return NULL; + + struct mpd_ffmpeg_stream *stream = mpd_ffmpeg_stream_open(NULL, is); + if (stream == NULL) + return NULL; + + AVFormatContext *f; + if (av_open_input_stream(&f, stream->io, is->uri, + input_format, NULL) != 0) { + mpd_ffmpeg_stream_close(stream); + return NULL; + } + + if (av_find_stream_info(f) < 0) { + av_close_input_stream(f); + mpd_ffmpeg_stream_close(stream); + return NULL; + } + + struct tag *tag = tag_new(); + + tag->time = f->duration != (int64_t)AV_NOPTS_VALUE + ? f->duration / AV_TIME_BASE + : 0; + +#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0) + av_metadata_conv(f, NULL, f->iformat->metadata_conv); + + for (unsigned i = 0; i < sizeof(ffmpeg_tag_maps)/sizeof(ffmpeg_tag_map); i++) { + int idx = ffmpeg_find_audio_stream(f); + ffmpeg_copy_metadata(tag, f->metadata, ffmpeg_tag_maps[i]); + if (idx >= 0) + ffmpeg_copy_metadata(tag, f->streams[idx]->metadata, ffmpeg_tag_maps[i]); + } +#else + if (f->author[0]) + tag_add_item(tag, TAG_ARTIST, f->author); + if (f->title[0]) + tag_add_item(tag, TAG_TITLE, f->title); + if (f->album[0]) + tag_add_item(tag, TAG_ALBUM, f->album); + + if (f->track > 0) { + char buffer[16]; + snprintf(buffer, sizeof(buffer), "%d", f->track); + tag_add_item(tag, TAG_TRACK, buffer); + } + + if (f->comment[0]) + tag_add_item(tag, TAG_COMMENT, f->comment); + if (f->genre[0]) + tag_add_item(tag, TAG_GENRE, f->genre); + if (f->year > 0) { + char buffer[16]; + snprintf(buffer, sizeof(buffer), "%d", f->year); + tag_add_item(tag, TAG_DATE, buffer); + } + +#endif + + av_close_input_stream(f); + mpd_ffmpeg_stream_close(stream); + + return tag; +} + +/** + * A list of extensions found for the formats supported by ffmpeg. + * This list is current as of 02-23-09; To find out if there are more + * supported formats, check the ffmpeg changelog since this date for + * more formats. + */ +static const char *const ffmpeg_suffixes[] = { + "16sv", "3g2", "3gp", "4xm", "8svx", "aa3", "aac", "ac3", "afc", "aif", + "aifc", "aiff", "al", "alaw", "amr", "anim", "apc", "ape", "asf", + "atrac", "au", "aud", "avi", "avm2", "avs", "bap", "bfi", "c93", "cak", + "cin", "cmv", "cpk", "daud", "dct", "divx", "dts", "dv", "dvd", "dxa", + "eac3", "film", "flac", "flc", "fli", "fll", "flx", "flv", "g726", + "gsm", "gxf", "iss", "m1v", "m2v", "m2t", "m2ts", + "m4a", "m4b", "m4v", + "mad", + "mj2", "mjpeg", "mjpg", "mka", "mkv", "mlp", "mm", "mmf", "mov", "mp+", + "mp1", "mp2", "mp3", "mp4", "mpc", "mpeg", "mpg", "mpga", "mpp", "mpu", + "mve", "mvi", "mxf", "nc", "nsv", "nut", "nuv", "oga", "ogm", "ogv", + "ogx", "oma", "ogg", "omg", "psp", "pva", "qcp", "qt", "r3d", "ra", + "ram", "rl2", "rm", "rmvb", "roq", "rpl", "rvc", "shn", "smk", "snd", + "sol", "son", "spx", "str", "swf", "tgi", "tgq", "tgv", "thp", "ts", + "tsp", "tta", "xa", "xvid", "uv", "uv2", "vb", "vid", "vob", "voc", + "vp6", "vmd", "wav", "wma", "wmv", "wsaud", "wsvga", "wv", "wve", + NULL +}; + +static const char *const ffmpeg_mime_types[] = { + "application/m4a", + "application/mp4", + "application/octet-stream", + "application/ogg", + "application/x-ms-wmz", + "application/x-ms-wmd", + "application/x-ogg", + "application/x-shockwave-flash", + "application/x-shorten", + "audio/8svx", + "audio/16sv", + "audio/aac", + "audio/ac3", + "audio/aiff" + "audio/amr", + "audio/basic", + "audio/flac", + "audio/m4a", + "audio/mp4", + "audio/mpeg", + "audio/musepack", + "audio/ogg", + "audio/qcelp", + "audio/vorbis", + "audio/vorbis+ogg", + "audio/x-8svx", + "audio/x-16sv", + "audio/x-aac", + "audio/x-ac3", + "audio/x-aiff" + "audio/x-alaw", + "audio/x-au", + "audio/x-dca", + "audio/x-eac3", + "audio/x-flac", + "audio/x-gsm", + "audio/x-mace", + "audio/x-matroska", + "audio/x-monkeys-audio", + "audio/x-mpeg", + "audio/x-ms-wma", + "audio/x-ms-wax", + "audio/x-musepack", + "audio/x-ogg", + "audio/x-vorbis", + "audio/x-vorbis+ogg", + "audio/x-pn-realaudio", + "audio/x-pn-multirate-realaudio", + "audio/x-speex", + "audio/x-tta" + "audio/x-voc", + "audio/x-wav", + "audio/x-wma", + "audio/x-wv", + "video/anim", + "video/quicktime", + "video/msvideo", + "video/ogg", + "video/theora", + "video/x-dv", + "video/x-flv", + "video/x-matroska", + "video/x-mjpeg", + "video/x-mpeg", + "video/x-ms-asf", + "video/x-msvideo", + "video/x-ms-wmv", + "video/x-ms-wvx", + "video/x-ms-wm", + "video/x-ms-wmx", + "video/x-nut", + "video/x-pva", + "video/x-theora", + "video/x-vid", + "video/x-wmv", + "video/x-xvid", + + /* special value for the "ffmpeg" input plugin: all streams by + the "ffmpeg" input plugin shall be decoded by this + plugin */ + "audio/x-mpd-ffmpeg", + + NULL +}; + +const struct decoder_plugin ffmpeg_decoder_plugin = { + .name = "ffmpeg", + .init = ffmpeg_init, + .stream_decode = ffmpeg_decode, + .stream_tag = ffmpeg_stream_tag, + .suffixes = ffmpeg_suffixes, + .mime_types = ffmpeg_mime_types +}; |