[FFmpeg-devel] [PATCH 184/279] adx: convert to new channel layout API

[James Almer]

From: Vittorio Giovara <vittorio.giovara at gmail.com>

Signed-off-by: Anton Khirnov <anton at khirnov.net>
Signed-off-by: James Almer <jamrial at gmail.com>
---
 libavcodec/adx.c    | 16 +++++++++++-----
 libavcodec/adxdec.c |  6 +++---
 libavcodec/adxenc.c | 11 ++++++-----
 3 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/libavcodec/adx.c b/libavcodec/adx.c
index cd88b16660..c60fabb40b 100644
--- a/libavcodec/adx.c
+++ b/libavcodec/adx.c
@@ -38,7 +38,7 @@ void ff_adx_calculate_coeffs(int cutoff, int sample_rate, int bits, int *coeff)
 int ff_adx_decode_header(AVCodecContext *avctx, const uint8_t *buf,
                          int bufsize, int *header_size, int *coeff)
 {
-    int offset, cutoff;
+    int offset, cutoff, channels;
 
     if (bufsize < 24)
         return AVERROR_INVALIDDATA;
@@ -58,18 +58,24 @@ int ff_adx_decode_header(AVCodecContext *avctx, const uint8_t *buf,
     }
 
     /* channels */
-    avctx->channels = buf[7];
-    if (avctx->channels <= 0 || avctx->channels > 2)
+    channels = buf[7];
+    if (channels <= 0 || channels > 2)
         return AVERROR_INVALIDDATA;
 
+    if (avctx->ch_layout.nb_channels != channels) {
+        av_channel_layout_uninit(&avctx->ch_layout);
+        avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
+        avctx->ch_layout.nb_channels = channels;
+    }
+
     /* sample rate */
     avctx->sample_rate = AV_RB32(buf + 8);
     if (avctx->sample_rate < 1 ||
-        avctx->sample_rate > INT_MAX / (avctx->channels * BLOCK_SIZE * 8))
+        avctx->sample_rate > INT_MAX / (channels * BLOCK_SIZE * 8))
         return AVERROR_INVALIDDATA;
 
     /* bit rate */
-    avctx->bit_rate = avctx->sample_rate * avctx->channels * BLOCK_SIZE * 8 / BLOCK_SAMPLES;
+    avctx->bit_rate = avctx->sample_rate * channels * BLOCK_SIZE * 8 / BLOCK_SAMPLES;
 
     /* LPC coefficients */
     if (coeff) {
diff --git a/libavcodec/adxdec.c b/libavcodec/adxdec.c
index 20256a092e..b3d946e81c 100644
--- a/libavcodec/adxdec.c
+++ b/libavcodec/adxdec.c
@@ -46,7 +46,7 @@ static av_cold int adx_decode_init(AVCodecContext *avctx)
             av_log(avctx, AV_LOG_ERROR, "error parsing ADX header\n");
             return AVERROR_INVALIDDATA;
         }
-        c->channels      = avctx->channels;
+        c->channels      = avctx->ch_layout.nb_channels;
         c->header_parsed = 1;
     }
 
@@ -132,7 +132,7 @@ static int adx_decode_frame(AVCodecContext *avctx, void *data,
             av_log(avctx, AV_LOG_ERROR, "error parsing ADX header\n");
             return AVERROR_INVALIDDATA;
         }
-        c->channels      = avctx->channels;
+        c->channels      = avctx->ch_layout.nb_channels;
         c->header_parsed = 1;
         if (buf_size < header_size)
             return AVERROR_INVALIDDATA;
@@ -147,7 +147,7 @@ static int adx_decode_frame(AVCodecContext *avctx, void *data,
 
     /* if the packet is not an even multiple of BLOCK_SIZE, check for an EOF
        packet */
-    if (!num_blocks || buf_size % (BLOCK_SIZE * avctx->channels)) {
+    if (!num_blocks || buf_size % (BLOCK_SIZE * c->channels)) {
         if (buf_size >= 4 && (AV_RB16(buf) & 0x8000)) {
             c->eof = 1;
             *got_frame_ptr = 0;
diff --git a/libavcodec/adxenc.c b/libavcodec/adxenc.c
index c5849a40a1..3736e746a9 100644
--- a/libavcodec/adxenc.c
+++ b/libavcodec/adxenc.c
@@ -107,7 +107,7 @@ static int adx_encode_header(AVCodecContext *avctx, uint8_t *buf, int bufsize)
     bytestream_put_byte(&buf, 3);                   /* encoding */
     bytestream_put_byte(&buf, BLOCK_SIZE);          /* block size */
     bytestream_put_byte(&buf, 4);                   /* sample size */
-    bytestream_put_byte(&buf, avctx->channels);     /* channels */
+    bytestream_put_byte(&buf, avctx->ch_layout.nb_channels); /* channels */
     bytestream_put_be32(&buf, avctx->sample_rate);  /* sample rate */
     bytestream_put_be32(&buf, 0);                   /* total sample count */
     bytestream_put_be16(&buf, c->cutoff);           /* cutoff frequency */
@@ -125,7 +125,7 @@ static av_cold int adx_encode_init(AVCodecContext *avctx)
 {
     ADXContext *c = avctx->priv_data;
 
-    if (avctx->channels > 2) {
+    if (avctx->ch_layout.nb_channels > 2) {
         av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
         return AVERROR(EINVAL);
     }
@@ -144,6 +144,7 @@ static int adx_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
     ADXContext *c          = avctx->priv_data;
     const int16_t *samples = frame ? (const int16_t *)frame->data[0] : NULL;
     uint8_t *dst;
+    int channels = avctx->ch_layout.nb_channels;
     int ch, out_size, ret;
 
     if (!samples) {
@@ -162,7 +163,7 @@ static int adx_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
         return 0;
     }
 
-    out_size = BLOCK_SIZE * avctx->channels + !c->header_parsed * HEADER_SIZE;
+    out_size = BLOCK_SIZE * channels + !c->header_parsed * HEADER_SIZE;
     if ((ret = ff_get_encode_buffer(avctx, avpkt, out_size, 0)) < 0)
         return ret;
     dst = avpkt->data;
@@ -177,8 +178,8 @@ static int adx_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
         c->header_parsed = 1;
     }
 
-    for (ch = 0; ch < avctx->channels; ch++) {
-        adx_encode(c, dst, samples + ch, &c->prev[ch], avctx->channels);
+    for (ch = 0; ch < channels; ch++) {
+        adx_encode(c, dst, samples + ch, &c->prev[ch], channels);
         dst += BLOCK_SIZE;
     }
 
-- 
2.34.1