diff options
author | Stefano Sabatini <stefasab@gmail.com> | 2012-05-17 15:01:50 +0400 |
---|---|---|
committer | Stefano Sabatini <stefasab@gmail.com> | 2012-05-18 02:58:41 +0400 |
commit | e1a8df70a2de1e1f2c56d93329b8d793789c179e (patch) | |
tree | 2a2274a9d7175b8920cbe3eb504d67c8abf41f9e /libavfilter/asrc_aevalsrc.c | |
parent | cfde7395b1bf4b1b9c37b9fbee76a2e9b61fe55a (diff) |
lavfi/aevalsrc: add option channel_layout
Allow to explicitly specify the channel layout to select.
Diffstat (limited to 'libavfilter/asrc_aevalsrc.c')
-rw-r--r-- | libavfilter/asrc_aevalsrc.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/libavfilter/asrc_aevalsrc.c b/libavfilter/asrc_aevalsrc.c index 41ccda98c0..e342e91b33 100644 --- a/libavfilter/asrc_aevalsrc.c +++ b/libavfilter/asrc_aevalsrc.c @@ -52,6 +52,7 @@ typedef struct { char *sample_rate_str; int sample_rate; int64_t chlayout; + char *chlayout_str; int nb_channels; int64_t pts; AVExpr *expr[8]; @@ -72,6 +73,8 @@ static const AVOption eval_options[]= { { "s", "set the sample rate", OFFSET(sample_rate_str), AV_OPT_TYPE_STRING, {.str = "44100"}, CHAR_MIN, CHAR_MAX }, { "duration", "set audio duration", OFFSET(duration_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0 }, { "d", "set audio duration", OFFSET(duration_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0 }, + { "channel_layout", "set channel layout", OFFSET(chlayout_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0 }, + { "c", "set channel layout", OFFSET(chlayout_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0 }, {NULL}, }; @@ -111,9 +114,28 @@ static int init(AVFilterContext *ctx, const char *args, void *opaque) } buf = NULL; } + eval->nb_channels = i; + + if (bufptr && (ret = av_set_options_string(eval, bufptr, "=", ":")) < 0) + goto end; + + if (eval->chlayout_str) { + int n; + ret = ff_parse_channel_layout(&eval->chlayout, eval->chlayout_str, ctx); + if (ret < 0) + goto end; + n = av_get_channel_layout_nb_channels(eval->chlayout); + if (n != eval->nb_channels) { + av_log(ctx, AV_LOG_ERROR, + "Mismatch between the specified number of channels '%d' " + "and the number of channels '%d' in the specified channel layout '%s'\n", + eval->nb_channels, n, eval->chlayout_str); + ret = AVERROR(EINVAL); + goto end; + } + } else { /* guess channel layout from nb expressions/channels */ - eval->nb_channels = i; eval->chlayout = av_get_default_channel_layout(eval->nb_channels); if (!eval->chlayout) { av_log(ctx, AV_LOG_ERROR, "Invalid number of channels '%d' provided\n", @@ -121,9 +143,7 @@ static int init(AVFilterContext *ctx, const char *args, void *opaque) ret = AVERROR(EINVAL); goto end; } - - if (bufptr && (ret = av_set_options_string(eval, bufptr, "=", ":")) < 0) - goto end; + } if ((ret = ff_parse_sample_rate(&eval->sample_rate, eval->sample_rate_str, ctx))) goto end; @@ -153,6 +173,7 @@ static void uninit(AVFilterContext *ctx) av_expr_free(eval->expr[i]); eval->expr[i] = NULL; } + av_freep(&eval->chlayout_str); av_freep(&eval->duration_str); av_freep(&eval->sample_rate_str); } |