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video: support setting libswscale chroma position

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This commit is contained in:
wm4
2013-07-25 23:02:23 +02:00
parent 24e50ee74e
commit 9cc5630fd5
6 changed files with 41 additions and 1 deletions
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15
video/sws_utils.c
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@@ -19,6 +19,7 @@
#include <assert.h>
#include <libswscale/swscale.h>
#include <libavcodec/avcodec.h>
#include <libavutil/opt.h>
#include "sws_utils.h"
@@ -227,6 +228,20 @@ int mp_sws_reinit(struct mp_sws_context *ctx)
av_opt_set_double(ctx->sws, "param0", ctx->params[0], 0);
av_opt_set_double(ctx->sws, "param1", ctx->params[1], 0);
#if HAVE_AVCODEC_CHROMA_POS_API
int cr_src = mp_chroma_location_to_av(src->chroma_location);
int cr_dst = mp_chroma_location_to_av(dst->chroma_location);
int cr_xpos, cr_ypos;
if (avcodec_enum_to_chroma_pos(&cr_xpos, &cr_ypos, cr_src) >= 0) {
av_opt_set_int(ctx->sws, "src_h_chr_pos", cr_xpos, 0);
av_opt_set_int(ctx->sws, "src_v_chr_pos", cr_ypos, 0);
}
if (avcodec_enum_to_chroma_pos(&cr_xpos, &cr_ypos, cr_dst) >= 0) {
av_opt_set_int(ctx->sws, "dst_h_chr_pos", cr_xpos, 0);
av_opt_set_int(ctx->sws, "dst_v_chr_pos", cr_ypos, 0);
}
#endif
// This can fail even with normal operation, e.g. if a conversion path
// simply does not support these settings.
sws_setColorspaceDetails(ctx->sws, sws_getCoefficients(s_csp), s_range,