@@ -144,6 +144,182 @@ static int guess_hevc_profile(const AVDOVIRpuDataHeader *hdr)
return 0; /* unknown */
}
+static struct {
+ uint64_t pps; // maximum pixels per second
+ int width; // maximum width
+ int main; // maximum bitrate in main tier
+ int high; // maximum bitrate in high tier
+} dv_levels[] = {
+ [1] = {1280*720*24, 1280, 20, 50},
+ [2] = {1280*720*30, 1280, 20, 50},
+ [3] = {1920*1080*24, 1920, 20, 70},
+ [4] = {1920*1080*30, 2560, 20, 70},
+ [5] = {1920*1080*60, 3840, 20, 70},
+ [6] = {3840*2160*24, 3840, 25, 130},
+ [7] = {3840*2160*30, 3840, 25, 130},
+ [8] = {3840*2160*48, 3840, 40, 130},
+ [9] = {3840*2160*60, 3840, 40, 130},
+ [10] = {3840*2160*120, 3840, 60, 240},
+ [11] = {3840*2160*120, 7680, 60, 240},
+ [12] = {7680*4320*60, 7680, 120, 450},
+ [13] = {7680*4320*120u, 7680, 240, 800},
+};
+
+int ff_dovi_configure(DOVIContext *s, AVCodecContext *avctx)
+{
+ AVDOVIDecoderConfigurationRecord *cfg;
+ const AVDOVIRpuDataHeader *hdr = NULL;
+ const AVFrameSideData *sd;
+ int dv_profile, dv_level, bl_compat_id;
+ size_t cfg_size;
+ uint64_t pps;
+
+ if (!avctx->dolbyvision)
+ goto skip;
+
+ sd = av_frame_side_data_get(avctx->decoded_side_data,
+ avctx->nb_decoded_side_data, AV_FRAME_DATA_DOVI_METADATA);
+
+ if (sd)
+ hdr = av_dovi_get_header((const AVDOVIMetadata *) sd->data);
+
+ if (avctx->dolbyvision == FF_DOLBYVISION_AUTO && !hdr)
+ goto skip;
+
+ switch (avctx->codec_id) {
+ case AV_CODEC_ID_AV1: dv_profile = 10; break;
+ case AV_CODEC_ID_H264: dv_profile = 9; break;
+ case AV_CODEC_ID_HEVC: dv_profile = hdr ? guess_hevc_profile(hdr) : 8; break;
+ default:
+ /* No other encoder should be calling this! */
+ av_assert0(0);
+ return AVERROR_BUG;
+ }
+
+ if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
+ if (dv_profile == 9) {
+ if (avctx->pix_fmt != AV_PIX_FMT_YUV420P)
+ dv_profile = 0;
+ } else {
+ if (avctx->pix_fmt != AV_PIX_FMT_YUV420P10)
+ dv_profile = 0;
+ }
+ }
+
+ switch (dv_profile) {
+ case 0: /* None */
+ bl_compat_id = -1;
+ break;
+ case 4: /* HEVC with enhancement layer */
+ case 7:
+ if (avctx->dolbyvision > 0) {
+ av_log(s->logctx, AV_LOG_ERROR, "Coding of Dolby Vision enhancement "
+ "layers is currently unsupported.");
+ return AVERROR_PATCHWELCOME;
+ } else {
+ goto skip;
+ }
+ case 5: /* HEVC with proprietary IPTPQc2 */
+ bl_compat_id = 0;
+ break;
+ case 10:
+ /* FIXME: check for proper H.273 tags once those are added */
+ if (hdr && hdr->bl_video_full_range_flag) {
+ /* AV1 with proprietary IPTPQc2 */
+ bl_compat_id = 0;
+ break;
+ }
+ /* fall through */
+ case 8: /* HEVC (or AV1) with BL compatibility */
+ if (avctx->colorspace == AVCOL_SPC_BT2020_NCL &&
+ avctx->color_primaries == AVCOL_PRI_BT2020 &&
+ avctx->color_trc == AVCOL_TRC_SMPTE2084) {
+ bl_compat_id = 1;
+ } else if (avctx->colorspace == AVCOL_SPC_BT2020_NCL &&
+ avctx->color_primaries == AVCOL_PRI_BT2020 &&
+ avctx->color_trc == AVCOL_TRC_ARIB_STD_B67) {
+ bl_compat_id = 4;
+ } else if (avctx->colorspace == AVCOL_SPC_BT709 &&
+ avctx->color_primaries == AVCOL_PRI_BT709 &&
+ avctx->color_trc == AVCOL_TRC_BT709) {
+ bl_compat_id = 2;
+ } else {
+ /* Not a valid colorspace combination */
+ bl_compat_id = -1;
+ }
+ }
+
+ if (!dv_profile || bl_compat_id < 0) {
+ if (avctx->dolbyvision > 0) {
+ av_log(s->logctx, AV_LOG_ERROR, "Dolby Vision enabled, but could "
+ "not determine profile and compaatibility mode. Double-check "
+ "colorspace and format settings for compatibility?\n");
+ return AVERROR(EINVAL);
+ }
+ goto skip;
+ }
+
+ pps = avctx->width * avctx->height;
+ if (avctx->framerate.num) {
+ pps = pps * avctx->framerate.num / avctx->framerate.den;
+ } else {
+ pps *= 25; /* sanity fallback */
+ }
+
+ dv_level = 0;
+ for (int i = 1; i < FF_ARRAY_ELEMS(dv_levels); i++) {
+ if (pps > dv_levels[i].pps)
+ continue;
+ if (avctx->width > dv_levels[i].width)
+ continue;
+ /* In theory, we should also test the bitrate when known, and
+ * distinguish between main and high tier. In practice, just ignore
+ * the bitrate constraints and hope they work out. This would ideally
+ * be handled by either the encoder or muxer directly. */
+ dv_level = i;
+ break;
+ }
+
+ if (!dv_level) {
+ if (avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
+ av_log(s->logctx, AV_LOG_ERROR, "Coded PPS (%"PRIu64") and width (%d) "
+ "exceed Dolby Vision limitations\n", pps, avctx->width);
+ return AVERROR(EINVAL);
+ } else {
+ av_log(s->logctx, AV_LOG_WARNING, "Coded PPS (%"PRIu64") and width (%d) "
+ "exceed Dolby Vision limitations. Ignoring, resulting file "
+ "may be non-conforming.\n", pps, avctx->width);
+ dv_level = FF_ARRAY_ELEMS(dv_levels) - 1;
+ }
+ }
+
+ cfg = av_dovi_alloc(&cfg_size);
+ if (!cfg)
+ return AVERROR(ENOMEM);
+
+ if (!av_packet_side_data_add(&avctx->coded_side_data, &avctx->nb_coded_side_data,
+ AV_PKT_DATA_DOVI_CONF, cfg, cfg_size, 0)) {
+ av_free(cfg);
+ return AVERROR(ENOMEM);
+ }
+
+ cfg->dv_version_major = 1;
+ cfg->dv_version_minor = 0;
+ cfg->dv_profile = dv_profile;
+ cfg->dv_level = dv_level;
+ cfg->rpu_present_flag = 1;
+ cfg->el_present_flag = 0;
+ cfg->bl_present_flag = 1;
+ cfg->dv_bl_signal_compatibility_id = bl_compat_id;
+
+ s->cfg = *cfg;
+ return 0;
+
+skip:
+ s->cfg = (AVDOVIDecoderConfigurationRecord) {0};
+ return 0;
+}
+
static inline uint64_t get_ue_coef(GetBitContext *gb, const AVDOVIRpuDataHeader *hdr)
{
uint64_t ipart;
@@ -26,6 +26,7 @@
#include "libavutil/dovi_meta.h"
#include "libavutil/frame.h"
+#include "avcodec.h"
#define DOVI_MAX_DM_ID 15
typedef struct DOVIContext {
@@ -33,7 +34,8 @@ typedef struct DOVIContext {
/**
* Currently active dolby vision configuration, or {0} for none.
- * Set by the user when decoding.
+ * Set by the user when decoding. Generated by ff_dovi_configure()
+ * when encoding.
*
* Note: sizeof(cfg) is not part of the libavutil ABI, so users should
* never pass &cfg to any other library calls. This is included merely as
@@ -96,4 +98,14 @@ int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size,
*/
int ff_dovi_attach_side_data(DOVIContext *s, AVFrame *frame);
+/**
+ * Configure the encoder for Dolby Vision encoding. Generates a configuration
+ * record in s->cfg, and attaches it to avctx->coded_side_data. Sets the correct
+ * profile and compatibility ID based on the tagged AVCodecContext colorspace
+ * metadata, and the correct level based on the resolution and tagged framerate.
+ *
+ * Returns 0 or a negative error code.
+ */
+int ff_dovi_configure(DOVIContext *s, AVCodecContext *avctx);
+
#endif /* AVCODEC_DOVI_RPU_H */
From: Niklas Haas <git@haasn.dev> We need to set up the configuration struct appropriately based on the codec type, colorspace metadata, and presence/absence of an EL (though, we currently don't support an EL). When present, we use the signalled RPU data header to help infer (and validate) the right values. --- libavcodec/dovi_rpu.c | 176 ++++++++++++++++++++++++++++++++++++++++++ libavcodec/dovi_rpu.h | 14 +++- 2 files changed, 189 insertions(+), 1 deletion(-)