diff options
Diffstat (limited to 'libavcodec/tta.c')
| -rw-r--r-- | libavcodec/tta.c | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/libavcodec/tta.c b/libavcodec/tta.c index 57f5818d7b..dccca46132 100644 --- a/libavcodec/tta.c +++ b/libavcodec/tta.c @@ -2,20 +2,20 @@ * TTA (The Lossless True Audio) decoder * Copyright (c) 2006 Alex Beregszaszi * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -205,6 +205,16 @@ static int tta_get_unary(GetBitContext *gb) return ret; } +static const int64_t tta_channel_layouts[7] = { + AV_CH_LAYOUT_STEREO, + AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY, + AV_CH_LAYOUT_QUAD, + 0, + AV_CH_LAYOUT_5POINT1_BACK, + AV_CH_LAYOUT_5POINT1_BACK|AV_CH_BACK_CENTER, + AV_CH_LAYOUT_7POINT1_WIDE +}; + static av_cold int tta_decode_init(AVCodecContext * avctx) { TTAContext *s = avctx->priv_data; @@ -234,6 +244,8 @@ static av_cold int tta_decode_init(AVCodecContext * avctx) } s->is_float = (s->flags == FORMAT_FLOAT); avctx->channels = s->channels = get_bits(&s->gb, 16); + if (s->channels > 1 && s->channels < 9) + avctx->channel_layout = tta_channel_layouts[s->channels-2]; avctx->bits_per_coded_sample = get_bits(&s->gb, 16); s->bps = (avctx->bits_per_coded_sample + 7) / 8; avctx->sample_rate = get_bits_long(&s->gb, 32); @@ -251,9 +263,9 @@ static av_cold int tta_decode_init(AVCodecContext * avctx) return -1; } else switch(s->bps) { -// case 1: avctx->sample_fmt = AV_SAMPLE_FMT_U8; break; + case 1: avctx->sample_fmt = AV_SAMPLE_FMT_U8; break; case 2: avctx->sample_fmt = AV_SAMPLE_FMT_S16; break; -// case 3: avctx->sample_fmt = AV_SAMPLE_FMT_S24; break; + case 3: avctx->bits_per_coded_sample = 24; case 4: avctx->sample_fmt = AV_SAMPLE_FMT_S32; break; default: av_log_ask_for_sample(s->avctx, @@ -286,6 +298,8 @@ static av_cold int tta_decode_init(AVCodecContext * avctx) } s->decode_buffer = av_mallocz(sizeof(int32_t)*s->frame_length*s->channels); + if (!s->decode_buffer) + return AVERROR(ENOMEM); s->ch_ctx = av_malloc(avctx->channels * sizeof(*s->ch_ctx)); if (!s->ch_ctx) return AVERROR(ENOMEM); @@ -311,7 +325,7 @@ static int tta_decode_frame(AVCodecContext *avctx, int cur_chan = 0, framelen = s->frame_length; int32_t *p; - if (*data_size < (framelen * s->channels * 2)) { + if (*data_size < (framelen * s->channels * av_get_bits_per_sample_fmt(avctx->sample_fmt) / 8)) { av_log(avctx, AV_LOG_ERROR, "Output buffer size is too small.\n"); return -1; } @@ -428,6 +442,13 @@ static int tta_decode_frame(AVCodecContext *avctx, // convert to output buffer switch(s->bps) { + case 1: { + uint8_t *samples = data; + for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) + *samples++ = *p + 0x80; + *data_size = samples - (uint8_t *)data; + break; + } case 2: { uint16_t *samples = data; for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) { @@ -438,6 +459,13 @@ static int tta_decode_frame(AVCodecContext *avctx, *data_size = (uint8_t *)samples - (uint8_t *)data; break; } + case 3: { + int32_t *samples = data; + for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) + *samples++ = AV_RN32(p) << 8; + *data_size = (uint8_t *)samples - (uint8_t *)data; + break; + } default: av_log(s->avctx, AV_LOG_ERROR, "Error, only 16bit samples supported!\n"); } |