libgsm: Split decoder and encoder

Signed-off-by: Diego Biurrun <diego@biurrun.de>

1 files changed, 0 insertions, 246 deletions

diff --git a/libavcodec/libgsm.c b/libavcodec/libgsm.c
deleted file mode 100644
index dfab005074..0000000000
--- a/libavcodec/libgsm.c
+++ /dev/null
@@ -1,246 +0,0 @@
-/*
- * Interface to libgsm for gsm encoding/decoding
- * Copyright (c) 2005 Alban Bedel <albeu@free.fr>
- * Copyright (c) 2006, 2007 Michel Bardiaux <mbardiaux@mediaxim.be>
- *
- * This file is part of Libav.
- *
- * Libav 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,
- * 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
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * Interface to libgsm for gsm encoding/decoding
- */
-
-// The idiosyncrasies of GSM-in-WAV are explained at http://kbs.cs.tu-berlin.de/~jutta/toast.html
-
-#include "config.h"
-#if HAVE_GSM_H
-#include <gsm.h>
-#else
-#include <gsm/gsm.h>
-#endif
-
-#include "libavutil/channel_layout.h"
-#include "libavutil/common.h"
-#include "avcodec.h"
-#include "internal.h"
-#include "gsm.h"
-
-static av_cold int libgsm_encode_init(AVCodecContext *avctx) {
-    if (avctx->channels > 1) {
-        av_log(avctx, AV_LOG_ERROR, "Mono required for GSM, got %d channels\n",
-               avctx->channels);
-        return -1;
-    }
-
-    if (avctx->sample_rate != 8000) {
-        av_log(avctx, AV_LOG_ERROR, "Sample rate 8000Hz required for GSM, got %dHz\n",
-               avctx->sample_rate);
-        if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)
-            return -1;
-    }
-    if (avctx->bit_rate != 13000 /* Official */ &&
-        avctx->bit_rate != 13200 /* Very common */ &&
-        avctx->bit_rate != 0 /* Unknown; a.o. mov does not set bitrate when decoding */ ) {
-        av_log(avctx, AV_LOG_ERROR, "Bitrate 13000bps required for GSM, got %dbps\n",
-               avctx->bit_rate);
-        if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)
-            return -1;
-    }
-
-    avctx->priv_data = gsm_create();
-
-    switch(avctx->codec_id) {
-    case AV_CODEC_ID_GSM:
-        avctx->frame_size = GSM_FRAME_SIZE;
-        avctx->block_align = GSM_BLOCK_SIZE;
-        break;
-    case AV_CODEC_ID_GSM_MS: {
-        int one = 1;
-        gsm_option(avctx->priv_data, GSM_OPT_WAV49, &one);
-        avctx->frame_size = 2*GSM_FRAME_SIZE;
-        avctx->block_align = GSM_MS_BLOCK_SIZE;
-        }
-    }
-
-    return 0;
-}
-
-static av_cold int libgsm_encode_close(AVCodecContext *avctx) {
-    gsm_destroy(avctx->priv_data);
-    avctx->priv_data = NULL;
-    return 0;
-}
-
-static int libgsm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
-                               const AVFrame *frame, int *got_packet_ptr)
-{
-    int ret;
-    gsm_signal *samples = (gsm_signal *)frame->data[0];
-    struct gsm_state *state = avctx->priv_data;
-
-    if ((ret = ff_alloc_packet(avpkt, avctx->block_align))) {
-        av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
-        return ret;
-    }
-
-    switch(avctx->codec_id) {
-    case AV_CODEC_ID_GSM:
-        gsm_encode(state, samples, avpkt->data);
-        break;
-    case AV_CODEC_ID_GSM_MS:
-        gsm_encode(state, samples,                  avpkt->data);
-        gsm_encode(state, samples + GSM_FRAME_SIZE, avpkt->data + 32);
-    }
-
-    *got_packet_ptr = 1;
-    return 0;
-}
-
-
-AVCodec ff_libgsm_encoder = {
-    .name           = "libgsm",
-    .long_name      = NULL_IF_CONFIG_SMALL("libgsm GSM"),
-    .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = AV_CODEC_ID_GSM,
-    .init           = libgsm_encode_init,
-    .encode2        = libgsm_encode_frame,
-    .close          = libgsm_encode_close,
-    .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
-                                                     AV_SAMPLE_FMT_NONE },
-};
-
-AVCodec ff_libgsm_ms_encoder = {
-    .name           = "libgsm_ms",
-    .long_name      = NULL_IF_CONFIG_SMALL("libgsm GSM Microsoft variant"),
-    .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = AV_CODEC_ID_GSM_MS,
-    .init           = libgsm_encode_init,
-    .encode2        = libgsm_encode_frame,
-    .close          = libgsm_encode_close,
-    .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
-                                                     AV_SAMPLE_FMT_NONE },
-};
-
-typedef struct LibGSMDecodeContext {
-    struct gsm_state *state;
-} LibGSMDecodeContext;
-
-static av_cold int libgsm_decode_init(AVCodecContext *avctx) {
-    LibGSMDecodeContext *s = avctx->priv_data;
-
-    avctx->channels       = 1;
-    avctx->channel_layout = AV_CH_LAYOUT_MONO;
-    avctx->sample_rate    = 8000;
-    avctx->sample_fmt     = AV_SAMPLE_FMT_S16;
-
-    s->state = gsm_create();
-
-    switch(avctx->codec_id) {
-    case AV_CODEC_ID_GSM:
-        avctx->frame_size  = GSM_FRAME_SIZE;
-        avctx->block_align = GSM_BLOCK_SIZE;
-        break;
-    case AV_CODEC_ID_GSM_MS: {
-        int one = 1;
-        gsm_option(s->state, GSM_OPT_WAV49, &one);
-        avctx->frame_size  = 2 * GSM_FRAME_SIZE;
-        avctx->block_align = GSM_MS_BLOCK_SIZE;
-        }
-    }
-
-    return 0;
-}
-
-static av_cold int libgsm_decode_close(AVCodecContext *avctx) {
-    LibGSMDecodeContext *s = avctx->priv_data;
-
-    gsm_destroy(s->state);
-    s->state = NULL;
-    return 0;
-}
-
-static int libgsm_decode_frame(AVCodecContext *avctx, void *data,
-                               int *got_frame_ptr, AVPacket *avpkt)
-{
-    int i, ret;
-    LibGSMDecodeContext *s = avctx->priv_data;
-    AVFrame *frame         = data;
-    uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    int16_t *samples;
-
-    if (buf_size < avctx->block_align) {
-        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    /* get output buffer */
-    frame->nb_samples = avctx->frame_size;
-    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
-        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return ret;
-    }
-    samples = (int16_t *)frame->data[0];
-
-    for (i = 0; i < avctx->frame_size / GSM_FRAME_SIZE; i++) {
-        if ((ret = gsm_decode(s->state, buf, samples)) < 0)
-            return -1;
-        buf     += GSM_BLOCK_SIZE;
-        samples += GSM_FRAME_SIZE;
-    }
-
-    *got_frame_ptr = 1;
-
-    return avctx->block_align;
-}
-
-static void libgsm_flush(AVCodecContext *avctx) {
-    LibGSMDecodeContext *s = avctx->priv_data;
-    int one = 1;
-
-    gsm_destroy(s->state);
-    s->state = gsm_create();
-    if (avctx->codec_id == AV_CODEC_ID_GSM_MS)
-        gsm_option(s->state, GSM_OPT_WAV49, &one);
-}
-
-AVCodec ff_libgsm_decoder = {
-    .name           = "libgsm",
-    .long_name      = NULL_IF_CONFIG_SMALL("libgsm GSM"),
-    .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = AV_CODEC_ID_GSM,
-    .priv_data_size = sizeof(LibGSMDecodeContext),
-    .init           = libgsm_decode_init,
-    .close          = libgsm_decode_close,
-    .decode         = libgsm_decode_frame,
-    .flush          = libgsm_flush,
-    .capabilities   = CODEC_CAP_DR1,
-};
-
-AVCodec ff_libgsm_ms_decoder = {
-    .name           = "libgsm_ms",
-    .long_name      = NULL_IF_CONFIG_SMALL("libgsm GSM Microsoft variant"),
-    .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = AV_CODEC_ID_GSM_MS,
-    .priv_data_size = sizeof(LibGSMDecodeContext),
-    .init           = libgsm_decode_init,
-    .close          = libgsm_decode_close,
-    .decode         = libgsm_decode_frame,
-    .flush          = libgsm_flush,
-    .capabilities   = CODEC_CAP_DR1,
-};