--- /dev/null
+/*
+ * True Audio (TTA) muxer
+ * Copyright (c) 2016 James Almer
+ *
+ * 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 "libavutil/crc.h"
+#include "libavutil/intreadwrite.h"
+
+#include "apetag.h"
+#include "avformat.h"
+#include "avio_internal.h"
+#include "internal.h"
+
+typedef struct TTAMuxContext {
+ AVIOContext *seek_table;
+ AVIOContext *data;
+ uint32_t nb_samples;
+ int frame_size;
+ int last_frame;
+} TTAMuxContext;
+
+static int tta_write_header(AVFormatContext *s)
+{
+ TTAMuxContext *tta = s->priv_data;
+ AVCodecParameters *par = s->streams[0]->codecpar;
+ int ret;
+
+ if (s->nb_streams != 1) {
+ av_log(s, AV_LOG_ERROR, "Only one stream is supported\n");
+ return AVERROR(EINVAL);
+ }
+ if (par->codec_id != AV_CODEC_ID_TTA) {
+ av_log(s, AV_LOG_ERROR, "Unsupported codec\n");
+ return AVERROR(EINVAL);
+ }
+ if (par->extradata && par->extradata_size < 22) {
+ av_log(s, AV_LOG_ERROR, "Invalid TTA extradata\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if ((ret = avio_open_dyn_buf(&tta->seek_table)) < 0)
+ return ret;
+ if ((ret = avio_open_dyn_buf(&tta->data)) < 0) {
+ ffio_free_dyn_buf(&tta->seek_table);
+ return ret;
+ }
+
+ /* Ignore most extradata information if present. It can be innacurate
+ if for example remuxing from Matroska */
+ ffio_init_checksum(s->pb, ff_crcEDB88320_update, UINT32_MAX);
+ ffio_init_checksum(tta->seek_table, ff_crcEDB88320_update, UINT32_MAX);
+ avio_write(s->pb, "TTA1", 4);
+ avio_wl16(s->pb, par->extradata ? AV_RL16(par->extradata + 4) : 1);
+ avio_wl16(s->pb, par->channels);
+ avio_wl16(s->pb, par->bits_per_raw_sample);
+ avio_wl32(s->pb, par->sample_rate);
+ /* Prevent overflow */
+ if (par->sample_rate > 0x7FFFFFu) {
+ av_log(s, AV_LOG_ERROR, "Sample rate too large\n");
+ return AVERROR(EINVAL);
+ }
+ tta->frame_size = par->sample_rate * 256 / 245;
+ avpriv_set_pts_info(s->streams[0], 64, 1, par->sample_rate);
+
+ return 0;
+}
+
+static int tta_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ TTAMuxContext *tta = s->priv_data;
+
+ avio_write(tta->data, pkt->data, pkt->size);
+ avio_wl32(tta->seek_table, pkt->size);
+ tta->nb_samples += pkt->duration;
+
+ if (tta->frame_size != pkt->duration) {
+ if (tta->last_frame) {
+ /* Two frames with a different duration than the default frame
+ size means the TTA stream comes from a faulty container, and
+ there's no way the last frame duration will be correct. */
+ av_log(s, AV_LOG_ERROR, "Invalid frame durations\n");
+
+ return AVERROR_INVALIDDATA;
+ }
+ /* First frame with a different duration than the default frame size.
+ Assume it's the last frame in the stream and continue. */
+ tta->last_frame++;
+ }
+
+ return 0;
+}
+
+static int tta_write_trailer(AVFormatContext *s)
+{
+ TTAMuxContext *tta = s->priv_data;
+ uint8_t *ptr;
+ unsigned int crc;
+ int size;
+
+ avio_wl32(s->pb, tta->nb_samples);
+ crc = ffio_get_checksum(s->pb) ^ UINT32_MAX;
+ avio_wl32(s->pb, crc);
+
+ /* Write Seek table */
+ crc = ffio_get_checksum(tta->seek_table) ^ UINT32_MAX;
+ avio_wl32(tta->seek_table, crc);
+ size = avio_close_dyn_buf(tta->seek_table, &ptr);
+ avio_write(s->pb, ptr, size);
+ av_free(ptr);
+
+ /* Write audio data */
+ size = avio_close_dyn_buf(tta->data, &ptr);
+ avio_write(s->pb, ptr, size);
+ av_free(ptr);
+
+ ff_ape_write_tag(s);
+ avio_flush(s->pb);
+
+ return 0;
+}
+
+AVOutputFormat ff_tta_muxer = {
+ .name = "tta",
+ .long_name = NULL_IF_CONFIG_SMALL("TTA (True Audio)"),
+ .mime_type = "audio/x-tta",
+ .extensions = "tta",
+ .priv_data_size = sizeof(TTAMuxContext),
+ .audio_codec = AV_CODEC_ID_TTA,
+ .video_codec = AV_CODEC_ID_NONE,
+ .write_header = tta_write_header,
+ .write_packet = tta_write_packet,
+ .write_trailer = tta_write_trailer,
+};
FATE_LAVF-$(call ENCDEC2, MPEG2VIDEO, PCM_S16LE, GXF) += gxf
FATE_LAVF-$(call ENCDEC, PCM_S16LE, IRCAM) += ircam
FATE_LAVF-$(call ENCDEC, MJPEG, IMAGE2) += jpg
+FATE_LAVF-$(call ENCMUX, TTA, MATROSKA_AUDIO) += mka
FATE_LAVF-$(call ENCDEC2, MPEG4, MP2, MATROSKA) += mkv
FATE_LAVF-$(call ENCDEC, ADPCM_YAMAHA, MMF) += mmf
FATE_LAVF-$(call ENCDEC2, MPEG4, PCM_ALAW, MOV) += mov ismv
FATE_LAVF-$(call ENCDEC, TARGA, IMAGE2) += tga
FATE_LAVF-$(call ENCDEC, TIFF, IMAGE2) += tiff
FATE_LAVF-$(call ENCDEC2, MPEG2VIDEO, MP2, MPEGTS) += ts
+FATE_LAVF-$(call ENCDEC, TTA, TTA) += tta
FATE_LAVF-$(call ENCDEC, PCM_U8, VOC) += voc
FATE_LAVF-$(call ENCDEC, PCM_S16LE, VOC) += voc_s16
FATE_LAVF-$(call ENCDEC, PCM_S16LE, WAV) += wav
projects / ffmpeg / commitdiff